YOKOGAWA AQ6376 User Manual
  1. Manuals
  2. Brands
  3. YOKOGAWA Manuals
  4. Measuring Instruments
  5. AQ6376
  6. User manual
YOKOGAWA AQ6376 User Manual

YOKOGAWA AQ6376 User Manual

Optical spectrum analyzer
Hide thumbs Also See for AQ6376:
1
2
3
4
5
6
Table Of Contents
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
Table of Contents

Advertisement

Quick Links

Download this manual
User's
Manual
AQ6376
Optical Spectrum Analyzer
IM AQ6376-01EN
2nd Edition

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the AQ6376 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for YOKOGAWA AQ6376

Summary of Contents for YOKOGAWA AQ6376

  • Page 1 User’s AQ6376 Manual Optical Spectrum Analyzer IM AQ6376-01EN 2nd Edition...
  • Page 2 For correct operation, please read this manual thoroughly before use. After reading this manual, keep it in a convenient location for quick reference in the event a question arises during operation. There are four manuals for the AQ6376 including this one. Read them along with this manual.
  • Page 3 Revisions • 1st Edition: April 2016 • 2nd Edition: October 2017 IM AQ6376-01EN...

  • Page 4: Symbols And Notation Used In This Manual

    Note Calls attention to informn that is important for proper operation of the instrument. on that is important for proper operation of the instrument. IM AQ6376-01EN...
  • Page 5 Bold characters used in the procedural explanations indicate characters that are marked on the panel keys or the characters of the soft keys displayed on the screen menu. Unit k: Denotes “1000.” Example: 100kS/s K: Denotes “1024.” Example: 459KB (file data size) IM AQ6376-01EN...

  • Page 6: Flow Of Operation

    Section 5.5 Marker Display Section 5.9 Searching Section 5.13 to 5.14 Waveform Analysis Waveform Analysis Section 6.1 to 6.9 GO/NO-GO Judgment Section 6.12 Saving Display Data and Printing Out Storage Media Section 7.1 Saving Data Section 7.2 to 7.8 IM AQ6376-01EN...

  • Page 7: Table Of Contents

    Measurement Start (Sweep) ..................4-35 4.14 Specifying a Sweep Range .................... 4-37 4.15 Pulse Light Measurement ....................4-38 4.16 External Trigger Measurement ..................4-43 4.17 Trigger Output ........................ 4-47 4.18 Smoothing ........................4-48 4.19 Analog Out ........................4-49 IM AQ6376-01EN...
  • Page 8 Saving/Loading Setting Data ..................7-28 Saving/Loading Analysis Results Data ................7-33 Saving/Loading Program Data ..................7-41 Saving Screen Image Data .................... 7-47 Saving/Loading Template Data..................7-51 7.10 Saving and Loading Logging Data ................. 7-57 7.11 Creating Files ......................... 7-63 IM AQ6376-01EN...
  • Page 9 Detailed Explanations of WDM Analysis Function ........... App-19 Appendix 5 Details of Optical Amplifier Analysis Function ..........App-30 Appendix 6 Details of Optical Filter Analysis Function ............App-33 Appendix 7 Soft Key Tree Diagram ..................App-50 Appendix 8 END USER LICENSE AGREEMENT ............... App-69 Index viii IM AQ6376-01EN...

  • Page 10: Chapter 1 Functions

    MEMORY FILE SPASE PROGRAM ADVANCE SYSTEM ENTER OREMOTE UNDO/ LOCAL HELP COPY PRESET ENTER OPTICAL INPUT CALIBRATION (600 1700nm) OUTPUT GP-IB interface POWER RS-232 interface Ethernet interface Control target USB storage USB mouse USB 101 keyboard medium Index IM AQ6376-01EN...

  • Page 11: Measurement

    PURGE GAS IN port on the rear panel of the AQ6376 to the monochromator in order to eliminate moisture contained in the internal air (the PURGE GAS OUT is open).
  • Page 12 Switching among Wavelength, Frequency and Wavenumber <<See section 4.2 for the operating procedure>> This function switches the horizontal axis display to wavelength / frequency / wavenumber. You can display either the wavelengths or frequencies of marker values and analysis results. IM AQ6376-01EN...
  • Page 13 The power per 1 nm is called the power spectral density. The level axis of the AQ6376 indicates the absolute power per wavelength resolution. For example, if the resolution is set to 0.1 nm, the power per 0.1 nm will be displayed.
  • Page 14 Thus, the time after a sweep trigger signal is input until the sweep starts will fluctuate in the range of 5 ms. Trigger Output <<See section 4.17 for the operating procedure>> This function outputs trigger signals from the trigger output terminal on the rear panel of the instrument (only during sweeping). Index IM AQ6376-01EN...
  • Page 15 -30 < = REF -17 dBm or more * At wavelength 1450 to 1620 nm ANALOG OUT Output Specifications Output saturation voltage +6 V or more Offset voltage (including noise) ±5 mVp-p Bandwidth 10 kHz or more Load 1 kΩ or more IM AQ6376-01EN...
  • Page 16 Therefore, the waveform on the screen is not overwritten. If you want to fix the waveform data of a trace, set the trace to FIX mode. The trace display at the side of the data area changes to “FIX.” Index IM AQ6376-01EN...
  • Page 17 Calculations are applied to mode peaks at or above the threshold value. The threshold value is set in the range of 0 to 99 dB (steps of 1). The trace display at the side of the data area changes to “PKCVFIT @”. IM AQ6376-01EN...
  • Page 18 Power density markers move along the waveform and show marker values (power values per normalization bandwidth) in the data area. Index • Integrated power markers Integrated power markers move along the waveform and show marker values (integrated power value over the specified wavelength range) in the data area. IM AQ6376-01EN...

  • Page 19: Waveform Display

    When both wavelength line markers 1 and 2 are displayed, or both level line markers 3 and 4 are displayed, the wavelength difference (L2-L1) or level difference (L4-L3) is shown below the marker values. Note For details, see the explanation in section 5.9, “Displaying Markers.” 1-10 IM AQ6376-01EN...
  • Page 20 You can also detect the next level peak or bottom. There is also an auto search function that automatically performs peak/bottom searches during each sweep. This is useful when you want to observe the changes to the peak and bottom levels during repeat sweeping. Index 1-11 IM AQ6376-01EN...

  • Page 21: Analysis

    Measurement can be performed of the optical amp gain and noise figure from measured waveform of the signal light going into the optical amp, as well as the measured waveform of the output light leaving the optical amp. 1-12 IM AQ6376-01EN...
  • Page 22 The recorded data can be shown on the screen in tables or graphs. In addition, the contents in tables can be saved to a file in CSV format. The following types of data are recorded for WDM analysis and peaks. • WDM analysis: Wavelength, level, SNR (signal-to-noise ratio) • Peak: Wavelength, level 1-13 IM AQ6376-01EN...

  • Page 23: Other

    Locking Keys <<See section 8.5 for the operating procedure>> This function locks key input temporarily to prevent users from operating the AQ6376 through the keys. Even when the keys are locked, soft keys registered as USER keys can be used for operation.

  • Page 24: Chapter 2 Preparing For Measurement

    Turn the power to the instrument ON. Turn ON the MAIN POWER switch and press the POWER switch. For instructions on turning the power ON and OFF, see chapter 7 of the Getting Started Guide, IM AQ6376-02EN. Use a 9.5/125 µm SM optical fiber to connect the instrument’s optical input connector with the optical output connector.
  • Page 25 2.1 Alignment Adjustment Press the EXECUTE soft key. Alignment adjustment is automatically executed. Adjustment finishes a few minutes thereafter, and you are returned to the original screen. Press the CANCEL soft key to cancel alignment adjustment partway through the process. Note • After alignment has been executed, wavelength calibration is also performed automatically inside the instrument. • The alignment adjustment has no effect if the process is stopped. The instrument remains in the state prior to execution of the alignment adjustment. IM AQ6376-01EN...
  • Page 26 In such cases, improving the coupling between the light source and the optical fiber will lessen the level inaccuracy. IM AQ6376-01EN...

  • Page 27: Wavelength Calibration

    Turn ON the MAIN POWER switch and press the POWER switch. For instructions on turning the power ON and OFF, see chapter 7 of the Getting Started Guide, IM AQ6376-02EN. Use a 9.5/125 µm SM optical fiber to connect the instrument’s optical input connector with the optical output connector.
  • Page 28 Press the MAIN POWER switch and press the POWER switch. For instructions on turning the power ON and OFF, see chapter 7 of the Getting Started Guide, IM AQ6376-02EN. Use a 9.5/125 µm SM optical fiber to connect the external light source’s optical output connector with the optical input connector.
  • Page 29 Press nm/ENTER. The wavelength value is set. Press the EXECUTE soft key. Wavelength calibration is executed. The previous screen is displayed again after the calibration process ends. Press the CANCEL soft key during wavelength calibration to cancel the wavelength calibration process. IM AQ6376-01EN...
  • Page 30 Press the CANCEL soft key during wavelength calibration to cancel the wavelength calibration process. Note It is not necessary to perform calibration on multiple wavelengths. If calibration is performed on multiple wavelengths, only the results from the final calibration are applied. Index IM AQ6376-01EN...

  • Page 31: Purge

    Water vapor present in the monochromator absorb light in the 1800–1950, 2450–2950 nm area, resulting in ripples in the measurement waveform. The AQ6376 can be purged with high purity nitrogen or purge gas in order to reduce water vapor and carbon dioxide absorption lines in the measurement results. Nitrogen gas is recommended for AQ6376 which has hygroscopic optical components and ambient water vapor may interfere with measurements.
  • Page 32 Pressure and flow rate of purge gas must be lower than the following maximum rating. Pressure: 1.5 psig (0.01 MPaG) Flow rate: 25 SCFH (12 L/min) Purge Gas Temperature Specifications Gas temperature: 23±5°C Note • A pressure regulator and precision flowmeter must be used. • Aprecision flowmeter with an adjustable needle valve is recommended. Index IM AQ6376-01EN...
  • Page 33 The pressure regulator and the precision flowmeter must be inserted in the system between the purge gas manifold outlet in your facility and the AQ6376. Moreover, gas out port of the AQ6376 must not be blocked and be sure there is adequate ventilation in the room.
  • Page 34 2.3 Purge Note When the AQ6376 is shipped from the factory, a resin tube is attached to the PURGE GAS IN and PURGE GAS OUT terminals to prevent dust from entering the inside. When installing required equipment and components, remove this resin tube.

  • Page 35: Important Points During Measurement

    A variety of adapters are available for this purpose. Summary of usable optical fiber types and usage limitations Optical Fiber Type Obtained Wavelength Absolute Level Resolution (in nm) Accuracy Type Core Diameter 0.10 0.10 0.10 62.5 0.10 0.10 0.20 0.50 1.00 2.00 2.00 2-12 IM AQ6376-01EN...
  • Page 36 In such cases, improving the coupling between the light source and the optical fiber will lessen the level inaccuracy. 2-13 IM AQ6376-01EN...
  • Page 37 High dynamic measurement Measurement can be taken Measurement time is long. using internal modulation. with stray light removed. Long-duration, high Valid sensitivity measurements Stray light suppression ratio: possible since offset does 60 dB or more not change. 2-14 IM AQ6376-01EN...
  • Page 38 2950 nm area, resulting in ripples in the measurement waveform. Either set a coarser resolution, use the monochromator in a lower-humidity environment, or execute the purge described on section 2.3 to reduce the amount of ripples. Index 2-15 IM AQ6376-01EN...
  • Page 39 For example, if a 1060 nm light, which is shorter than the measurement wavelength range of the AQ6376, is applied, draw a horizontal line from 1060 nm on the vertical axis, and the intersections with the lines on the graph correspond to the displayed wavelengths.

  • Page 40: Chapter 3 Common Operations

    Press to display the previous soft key menu. This is a selection soft key. Select one of the soft keys connected with the black band. When selected, the soft key is displayed in reverse video. Several soft keys can be connected. Index IM AQ6376-01EN...
  • Page 41 (for display only, no keys are available). to a function that closes the window. For example, when the MORE 1/2 soft key is pressed, the menu changes to the LEVEL 2/2 soft key menu, and the key display changes to MORE 2/2. IM AQ6376-01EN...

  • Page 42: Using The Mouse And External Keyboard

    The USB mouse is connected to the USB interface on the front panel of the instrument. For instructions on connecting the mouse, see chapter 7 of the Getting Started Guide, IM AQ6376-02EN. Operations the Same as the Panel Keys Displaying the Top Menu Right-click the mouse in the screen.
  • Page 43 None Confirms entry nm/ENTER ENTER Confirms entry DATA ENTRY [→],[←] Rotary knob Changes numeric values/items [↑],[↓] Arrow keys ([UP] Numeric value one-step change, item [DOWN]) change, table scrolling COARSE [ALT]+[N] Switches between fine and coarse encoder IM AQ6376-01EN...

  • Page 44: Entering Numerical Values And Strings

    Press the COARSE key again to restore the previous digit/step. When COARSE is selected, the COARSE key lights. DATA ENTRY Rotary knob Arrow keys COARSE Index BACK SPASE Numeric keypad ENTER ENTER IM AQ6376-01EN...
  • Page 45 When the character string is entered, press the DONE soft key. The input character string is entered. Note • In addition to when pressing DISPLAY, the character input screen appears whenever a string must be entered on the instrument, such as when entering a file name for saving a file. • Numerical input can be performed directly from the numeric key pad. IM AQ6376-01EN...

  • Page 46: Screen Display

    COLOR2 Sets the screen display color to “COLOR 2”. COLOR3 Sets the screen display color to “COLOR 3”. COLOR4 Sets the screen display color to “COLOR 4”. COLOR5 Sets the screen display color to “COLOR 5”. B&W Sets the screen display color to black-and-white. IM AQ6376-01EN...

  • Page 47: Setting The Date And Time

    Setting the Date and Time The AQ6376 displays the date and time in the upper right corner of the screen. This information is used for a time stamp when recording data. Displaying the Date and Time Dialog Box Press SYSTEM. The soft key menu is displayed.

  • Page 48: Chapter 4 Measurement

    • Resolution (RESOLUTION) After performing one auto sweep and setting optimal measurement conditions, a repeat sweep is made for measurement. During the automatic setting, only the following keys are enabled: REPEAT, SINGLE, STOP, and UNDO/LOCAL (when under remote control). IM AQ6376-01EN...

  • Page 49: Horizontal/Vertical Axis Settings

    Press the MEAS WL AIR VACUUM soft key. The measured wavelength is changed to either a vacuum wavelength or an air wavelength. Note • This function only applies to measurements taken after the setting is selected. Previously measured waveforms are not affected. • If vacuum wavelength is set, is displayed at the very bottom of the screen in inverse video. • This function need not be set for Frequency mode and Wavenumber mode. The setting is only for vacuums. IM AQ6376-01EN...
  • Page 50 Press the LIN BASE LEVEL soft key. A screen for setting the lower-end value of the level scale is displayed. Enter a value using the rotary knob, arrow keys, or numeric key pad. Press ENTER. Index IM AQ6376-01EN...
  • Page 51 The setting range is 0 to 12. The setting resolution is steps of 1, or steps of 1-2-5 when COARSE is pressed. Press ENTER. Note • This is only available when the main scale is a log scale. • If the REF position value is larger than the number of divisions, it is forcibly reduced to the number of divisions. • When using linear scale, the REF position is at the top (fixed to 10 divisions). IM AQ6376-01EN...
  • Page 52 If the value is set to a scale larger than 5 dB/DIV in range fixing mode (SENS:NORMAL/ HOLD) or pulse light measurement mode, the waveform will not be correctly measured in the vertical direction so a warning is displayed. Index IM AQ6376-01EN...
  • Page 53 For information on the use of dBm and dBm/nm, see “Power spectral density Display” in section 1.2, “Measurement.” This soft key is disabled if the unit of the horizontal axis is wavenumber. LEVEL UNIT mW mW/nm When the level axis uses a linear scale, the display switches between nW, μW, mW, or pW (absolute power), and nW/nm, μW/nm, mW/nm or pW/nm (power spectral density). IM AQ6376-01EN...

  • Page 54: Sub Scale

    If the left scale (main scale) is changed to LOG (8 DIV) or linear (10 DIV), the sub scale is displayed to correspond to the DIV count on the main scale. IM AQ6376-01EN...
  • Page 55 Press the MORE 1/2 soft key. Press the OFFSET LEVEL soft key. The offset value (sub scale REF value) setting screen is displayed. Enter a value using the rotary knob, arrow keys, or numeric key pad. Press ENTER. IM AQ6376-01EN...
  • Page 56 Press the MORE 1/2 soft key. Press the SCALE MIN soft key. The sub scale lower end value setting screen is displayed. Enter a value using the rotary knob, arrow keys, or numeric key pad. Press ENTER. Index IM AQ6376-01EN...
  • Page 57 SUB REF LVL POSITION **DIV (Sets the sub scale REF position.) The REF position is set at DIV number **, counting from the bottom of the screen. The setting range is 0 to 12. Settings can be adjusted in steps of 1. The value changes in steps of 1-2-5 if you press the COARSE key. 4-10 IM AQ6376-01EN...

  • Page 58: Setting The Reference Level

    Press the REF LEVEL soft key. The reference level setting screen is displayed. Enter a reference value using the rotary knob, arrow keys, or numeric key pad. Press ENTER. Note The vertical axis setting is applied in real time on the waveform display. Index 4-11 IM AQ6376-01EN...
  • Page 59 When a value is input a soft key menu for selecting the instrument appears. Press the soft key corresponding to the desired units. The reference level is set. Note When entered with the rotary knob or arrow keys, the reference level is set using the current units. 4-12 IM AQ6376-01EN...
  • Page 60 With the moving marker displayed, press the MARKER-> REF LEVEL soft key. The specified reference level is displayed, and the displayed waveform is redrawn according to the changed reference level. For details on displaying moving markers, see the explanation in section 5.9. Index 4-13 IM AQ6376-01EN...
  • Page 61 -90.0–+30.0 dBm for LOG scale, or 1.00 pW–1000 mW for linear scale. If the moving marker value exceeds the allowed range, it is set to the nearest value in the range and a warning is displayed. In the following states, the MARKER → REF LEVEL key is disabled. • When the moving marker is OFF • When both split screens are on HOLD 4-14 IM AQ6376-01EN...

  • Page 62: Center Wavelength (Center Frequency / Center Wavenumber) Setting

    Enter a center wavelength (frequency / wavenumber) using the rotary knob, arrow keys, or numeric key pad. Press nm/ENTER. Note • It is not necessary to press nm/ENTER when using the rotary knob or arrow keys. • The set value is applied to the measurement conditions area. • When a setting is changed, appears in the measurement conditions area. • If a value outside the setting range is entered, the nearest permitted value is set. For instructions on switching the wavelength, frequency and wavenumber displays, see section 4.2. Index 4-15 IM AQ6376-01EN...
  • Page 63 Enter a stop wavelength or stop frequency using the rotary knob, arrow keys, or numeric key pad. Press nm/ENTER. Note • It is not necessary to press nm/ENTER when using the rotary knob or arrow keys. • The set value is applied to the measurement conditions area. • When a setting is changed, appears in the measurement conditions area. • If a value outside the setting range is entered, the nearest permitted value is set. For instructions on switching the wavelength , frequency and wavenumber displays, see section 4.2. 4-16 IM AQ6376-01EN...
  • Page 64 (frequency / wavenumber). Press CENTER. press the AUTO CENTER OFF/ON soft key to select ON. Setting peak to center Setting THRESH 3dB center to center Automatic setting Using zoom scale Index 4-17 IM AQ6376-01EN...
  • Page 65 With the moving marker displayed, press the MARKER-> CENTER soft key. The specified center wavelength (frequency / wavenumber) is displayed, and the displayed waveform is redrawn according to the changed center wavelength (frequency / wavenumber). For details on displaying moving markers, see the explanation in section 5.9. 4-18 IM AQ6376-01EN...
  • Page 66 When this key is set to ON, the peak is searched in the active trace waveform and set as the center wavelength automatically for each sweep. The active trace must be set to WRITE. When ON is selected, at the bottom of the screen is displayed in reverse Index video. 4-19 IM AQ6376-01EN...
  • Page 67 This key is used to set the currently set ZOOM scale (ZOOM CENTER, ZOOM SPAN, ZOOM START, ZOOM STOP) as the measurement scale (CENTER, START, STOP, SPAN). When you press this key, the current waveform display scale is set as the measurement scale for the next sweep. 4-20 IM AQ6376-01EN...

  • Page 68: Sweep Width Settings

    Enter a sweep width using the rotary knob, arrow keys, or numeric key pad. Press nm/ENTER. Note • It is not necessary to press nm/ENTER when using the rotary knob or arrow keys. • The set value is applied to the measurement conditions area. • When a setting is changed, appears in the measurement conditions area. • If a value outside the setting range is entered, the nearest permitted value is set. For instructions on switching the wavelength, frequency and wavenumber displays, see section 4.2. Index 4-21 IM AQ6376-01EN...
  • Page 69 Enter a stop wavelength (frequency / wavenumber) using the rotary knob, arrow keys, or numeric key pad. Press nm/ENTER. Note • It is not necessary to press nm/ENTER when using the rotary knob or arrow keys. • The set value is applied to the measurement conditions area. • When a setting is changed, appears in the measurement conditions area. • If a value outside the setting range is entered, the nearest permitted value is set. For instructions on switching the wavelength, frequency and wavenumber displays, see section 4.2. 4-22 IM AQ6376-01EN...
  • Page 70 • If only one of the line markers is displayed, for L1, the wavelength on the right edge of the Index screen is set to the measurement stop wavelength. For L2, the wavelength on the left edge of the screen is set to the measurement start wavelength. • The MKR L1-L2 ->SPAN soft key cannot be used under the following conditions. • When both L1 and L2 are OFF. • When both SPLIT screens are on HOLD. • When the span of the active trace is 0 nm. 4-23 IM AQ6376-01EN...
  • Page 71 Sets the sweep width as six times the spectrum width (threshold 20 dB ) of the active trace measurement waveform with the RMS method. MKR L1-L2 →SPAN Sets spacing between line markers 1 and 2 for sweep width. The setting range is 0.5 to 1900 nm (in 0.1 nm steps). 4-24 IM AQ6376-01EN...

  • Page 72: Wavelength (Frequency / Wavenumber) Resolution Settings

    Corrective Action When “UNCAL” Is Displayed Perform the following steps. • Decrease the span. • Increase the number of samples. • Lower the resolution (increase the value). • Select AUTO with the SAMPLING POINT soft key under SETUP. The “UNCAL” display disappears if the span, number of samples, and the resolution settings are appropriate. Index 4-25 IM AQ6376-01EN...
  • Page 73 Water (OH-) ions present in the monochromator absorb light in the 1800–1950, 2450– 2950 nm area, resulting in ripples in the measurement waveform. Either set a coarser resolution, use the monochromator in a lower-humidity environment, or execute the purge described on section 2.3 to reduce the amount of ripples. 4-26 IM AQ6376-01EN...

  • Page 74: Sampling Point/Interval Settings

    Sets sampling points Sets sampling interval Note • The instrument displays if the settings for span, the number of sampling points, and the resolution are inappropriate. When is displayed, normal measurement is not possible. • See section 4.7 for the corrective actions when is displayed. Index 4-27 IM AQ6376-01EN...
  • Page 75 If settings are entered such that the sampling interval determined by the settings for the span and number of samples is extremely long relative to the wavelength (frequency / wavenumber) resolution, data may be lost. Enter settings that are appropriate for the resolution. 4-28 IM AQ6376-01EN...

  • Page 76: Sensitivity Settings

    Press the soft key corresponding to the desired choice. The screen returns to the previous stage, and the value specified by the SENS/MODE soft key is displayed. Note If you set the sensitivity to HIGH1–HIGH3, it is forced to set to CHOP MODE. Index 4-29 IM AQ6376-01EN...
  • Page 77 400 nm from the peak wavelength. If this stray light is likely to have a severe impact on measurements, the sensitivity can be set to HIGH 1/CHOP– HIGH 3/CHOP in order to reduce the effects of the stray light. Waveform with CHOP MODE invalid Waveform with CHOP MODE Valid 4-30 IM AQ6376-01EN...

  • Page 78: Sweep Speed Settings

    1x. First check the measurement spectrum, and then select this value if appropriate. • The noise level is approximately 2 dB higher than that when you select 1x. Note When you set the sweep speed to 2x, is displayed in the measurement conditions area. Index 4-31 IM AQ6376-01EN...

  • Page 79: Averaging Times Setting

    If you press the COARSE key you can use the rotary knob or arrow keys to change the numerical value in 1-2-5 steps. The value changes in 1 step if you do not press the COARSE key. 4-32 IM AQ6376-01EN...

  • Page 80: Trace Settings

    Press the VIEW B soft key and select DISP. Press the WRITE B soft key. Trace B is placed in write mode. Note Waveforms of traces for which VIEW A–VIEW G are set to BLANK cannot be displayed on screen. Index 4-33 IM AQ6376-01EN...
  • Page 81 The trace display changes to "FIX". When the FIX soft key is pressed during sweeping, the waveform displayed at that time is fixed. The "at" (@) symbol indicates the currently selected trace. One is included from A–G. 4-34 IM AQ6376-01EN...

  • Page 82: Measurement Start (Sweep)

    Setting the Unit of Segments Continuing on from step 1, press the SEGMENT POINT soft key. The segment unit setting screen is displayed. Index Enter a numerical value using the rotary knob, arrow keys, or numeric keypad, then press ENTER. 4-35 IM AQ6376-01EN...
  • Page 83 The setting range is MINIMUM or 1 to 99,999 seconds, and is set in the DATA ENTRY section. If “0” is entered through the numeric keypad, then MINIMUM is set. If a setting other than MINIMUM is entered, is displayed at the very bottom of the screen in inverse video. 4-36 IM AQ6376-01EN...

  • Page 84: Specifying A Sweep Range

    Press the REPEAT or SINGLE soft key. Sweeping between line markers begins. To cancel, press the SWEEP MKR L1-L2 OFF/ON soft key, and select OFF. Sweeping is performed over the entire screen. Sweep range Note • If both L1 and L2 are set, sweeping is executed between line markers 1 and 2. • If just L1 is set, the sweep occurs over the span from line marker 1 to the right edge of the screen. • If just L2 is set, the sweep occurs over the span from the left edge of the screen to line marker 2. • If neither L1 nor L2 is set, analysis is performed from the set start wavelength to the stop wavelength. Index 4-37 IM AQ6376-01EN...

  • Page 85: Pulse Light Measurement

    Press the SINGLE or REPEAT soft key. Sweeping begins, and a waveform is displayed. To stop the sweep, press the STOP soft key. Note • An appropriate sensitivity is determined from the pulse width of the measured pulse light. For details, see the table, “Sensitivity Name and Corresponding Pulse Width.” • Enter a value longer than the period of the pulse light being measured for the peak hold value. 4-38 IM AQ6376-01EN...
  • Page 86 The GATE MODE soft key will be unavailable if the following settings are used. To enable the soft key, change the settings. • Unavailable when SWEEP MODE is set to 2x. Available when it is set to 1x. See section 4.10. • Unavailable when CHOP MODE of SENS/MODE is not set to OFF. Available when it is set to OFF. See section 4.9. • Unavailable when AVERAGE TIMES is not set to 1. Available when it is set to 1. See section 4.11. • Unavailable when TRIG INPUT MODE of TRIGGER SETTING is set to SMPL ENABLE. Available when it is set to SMPL TRIG. See section 4.16. Index 4-39 IM AQ6376-01EN...
  • Page 87 For information on external trigger measurement, see section 4.15. GATE MODE In GATE MODE, the AQ6376 samples data when the external signal (gate signal) is active and measures the pulse light. To use this mode, you need to set the sampling interval and signal logic.
  • Page 88 The broken line shows the MAX HOLD waveform of the first sweep. Because the AQ6376 does not show data that is sampled when the gate signal is inactive, the wavelength data during this period may be missed, but because the sampling time and gate signal (pulse light) are asynchronous, performing repeat sweep using the MAX HOLD function eventually results in all the waveform data in the span range to be shown.
  • Page 89 POSI: Sampling is performed when the gate signal is at high level. NEGA: Sampling is performed when the gate signal is at low level. There is an external trigger input terminal on the rear panel of the AQ6376. The input signal is TTL level.

  • Page 90: External Trigger Measurement

    SWEEP TRIG soft key, respectively. If you set SWEEP TRIG, that concludes the settings. If you press the EXEC soft key, the instrument returns to the original screen. Note • In sample trigger mode, set SWEEP SPEED to 1x. • In sweep trigger mode, set SWEEP SPEED to 1x. Also, TRIGGER SETTING and EXT TRIGGER MODE cannot be set. Index 4-43 IM AQ6376-01EN...
  • Page 91 Press the DELAY soft key. Enter a delay time and press ENTER. Note When AVERAGE TIMES is set, sweeping stops when a number of external signals equaling the specified sampling points times the "average times" is input. 4-44 IM AQ6376-01EN...
  • Page 92 PEAK: 100µs NORM/HOLD NORM/HOLD P-NORM/HLD E-NORM/HLD EXT: 50µs NORM/AUTO NORM/AUTO P-NORM/AUT E-NORM/AUT 300µs Invalid NORMAL NORMAL P-NORMAL E-NORMAL P-MID E-MID HIGH1/CHOP HI1/CHOP P-HI1/CHOP E-HI1/CHOP 50ms HIGH2/CHOP Valid HI2/CHOP P-HI2/CHOP E-HI2/CHOP 200ms HIGH3/CHOP HI3/CHOP P-HI3/CHOP E-HI3/CHOP 2000ms Index 4-45 IM AQ6376-01EN...
  • Page 93 Sensitivity Name and Minimum Pulse Width Sensitivity Setting Minimum Pulse Width NORM/HOLD 50 ms NORM/AUTO 50 ms NORMAL 50 ms 50 ms HIGH1/CHOP 100 ms HIGH2/CHOP 250 ms HIGH3/CHOP 2050 ms 4-46 IM AQ6376-01EN...

  • Page 94: Trigger Output

    OFF PLS LIGHT MEASURE. Explanation You can synchronize sweeping from the trigger output terminal on the rear panel of the instrument and output a positive logic signal. Signals are only output when sweeping. Output signals are of TTL levels. Index 4-47 IM AQ6376-01EN...

  • Page 95: Smoothing

    Also, if a relatively small number of samples is set relative to the measurement span (or example, when UNCAL is displayed), the appropriate Smoothing function may not be performed. Waveform with SMOOTHING OFF SMOOTHING set to ON 4-48 IM AQ6376-01EN...

  • Page 96: Analog Out

    Press the SINGLE or REPEAT soft key. An analog voltage is output corresponding to the input light. Note • The analog out function is enabled only when the sensitivity is set to NORM/HOLD. • If the level of the input light is high, the output voltage level is saturated. Index 4-49 IM AQ6376-01EN...
  • Page 97 -30 < = REF -17 dBm or more * At wavelength 1450 to 1620 nm ANALOG OUT Output Specifications Output saturation voltage +6 V or more Offset voltage (including noise) ±5 mVp-p Bandwidth 10 kHz or more Load 1 kΩ or more 4-50 IM AQ6376-01EN...

  • Page 98: Chapter5 Waveform Display

    Waveform display example Setting the peak wavelength to the center wavelength of zoom display Index Display scale initialization The zoom area is displayed as a dotted line in the overview window After changing the display scale (zooming), is displayed IM AQ6376-01EN...
  • Page 99 Enter a zoom stop wavelength (frequency / wavenumber) using the rotary knob, arrow keys, or numeric key pad. Press nm/ENTER. Waveform display example The zoom area is displayed as a dotted line in the overview window After changing the display scale (zooming), is displayed Note • It is not necessary to press nm/ENTER when using the rotary knob or arrow keys. • If a value outside the setting range is entered, the nearest permitted value is set. IM AQ6376-01EN...
  • Page 100 After changing the display scale (zooming), is displayed Note • If you change the display scale to a value different from the measurement scale, ZOOMING appears on screen. Also, an overview window that shows the measurement scale is displayed in the corner of the measurement screen. Index • The display scale and measurement scale are mutually independent. • Changing the zoom function settings does not change the measurement conditions. IM AQ6376-01EN...
  • Page 101 Hide, Display Left, and Display Right. Setting the Window Size Press ZOOM. Press the OVERVIEW SIZE LARGE/SMALL soft key. The window switches between large and small. Waveform display example OVERVIEW DISPLAY OFF/L/R set to L and OVERVIEW SIZE LARGE/SMALL set to SMALL. IM AQ6376-01EN...
  • Page 102 Drag outside of the zoom area. A new zoom area is created. When doing so, the mouse pointer changes to a plus (+) sign. Note For information on power measurement inside the zoom area, see section 6.4, “Power Measurement.” Index IM AQ6376-01EN...
  • Page 103 You can change the values using the rotary or arrow keys. The value changes in 1 nm (0.1 THz/1 cm ) steps if you press the COARSE key. The value changes in 0.1 nm (0.01 THz/0.1 cm ) steps if you do not press the COARSE key. IM AQ6376-01EN...
  • Page 104 The zoom center wavelength does not change. • When the zoom start or stop wavelength is set, one wavelength becomes fixed, and this changes the value of the wavelength display sweep width. In addition, the zoom center wavelength value is also changed at the same time. • The above is the same for Frequency and Wavenumber mode. Index IM AQ6376-01EN...

  • Page 105: Wavelength Updating/Fixing

    Press the FIX soft key. The trace area display switches to FIX. The waveform data is fixed. Even if measurement is performed, the waveform data is not updated. Note • Only 1 trace can be set as the active waveform. If you wish to update multiple traces, update them one at a time. • If all traces are set to FIX, a warning appears, and measurement cannot be performed. For information on the trace function, see section 1.3 IM AQ6376-01EN...
  • Page 106 The trace display changes to "FIX". When the FIX soft key is pressed during sweeping, the waveform displayed at that time is fixed. The "at" (@) symbol indicates the currently selected trace. One is included from A–G. Index IM AQ6376-01EN...

  • Page 107: Max/Min Hold Display

    If you selected MIN HOLD and the measured value is smaller than the previous value, waveform data is updated. Note MAX/MIN HOLD is only enabled when the sweep mode is REPEAT. It does not function even if you perform repeated SINGLE sweeps. 5-10 IM AQ6376-01EN...

  • Page 108: Sweep Average

    Enter a number of averaging times using the rotary knob, step keys, or numeric key pad. Perform measurement. The sweep average value is updated each time measurement is performed. note The allowed setting for averaging times is 2-100. Index 5-11 IM AQ6376-01EN...
  • Page 109 Wj (i): Newly displayed waveform Wj-1(i): Previously displayed waveform W (i): Newly obtained waveform Number of sampling points Number of averagings Note • The setting values of the NOISE MASK function are not affected by sweep averaging. The noise mask is executed when the results of the sweep average are displayed. • When CHOP MODE in the measurement sensitivity settings is set to SWITCH, two sweepings is one count. 5-12 IM AQ6376-01EN...

  • Page 110: Displaying Calculated Waveforms

    C, F, or G, the CALCULATE key is disabled. • If a trace targeted for calculation is remeasured and the center wavelength and measurement span of the trace being measured is changed, it is recalculated and Index redisplayed. • If the measurement condition (resolution) of the trace targeted for calculation does not match, a warning is displayed after calculation. 5-13 IM AQ6376-01EN...
  • Page 111 C=1-k(B/A) Given Trace A and Trace B, calculates 1-k(B/A). Calculates 1-k x (Trace B/Trace A) (linear value), and writes the results to trace C. The trace display on the side of the data area changes to “1-k(B/A)”. 5-14 IM AQ6376-01EN...
  • Page 112 (Each level is a linear value.) Estimating the reflected light spectrum from the transmission light spectrum k t = (Pin–Pre)/Pout Estimating the transmission light spectrum from the reflected light spectrum k r = (Pin–Pout)/Pre Index 5-15 IM AQ6376-01EN...
  • Page 113 F=D+E(LIN) Adds trace D and trace E in linear form. F=D-E(LIN) Subtracts trace E from trace D in linear form. F=E-D(LIN) Subtracts trace D from trace E in linear form. POWER/NBW For more information, see section 5.8, “Power Spectral Density Trace.” 5-16 IM AQ6376-01EN...
  • Page 114 G=NORM B Normalizes trace B and writes the normalized data to trace G. G=NORM C Normalizes trace C and writes the normalized data to trace G. CURVE FIT For more information, see section 5.7, “Curve Fit.” Index PEAK CURVE FIT For more information, see section 5.7, “Curve Fit.” 5-17 IM AQ6376-01EN...

  • Page 115: Normalized Display

    To normalize Trace A press the G=NORM A soft key, to normalize Trace B press G=NORM B, and to normalize Trace G, press G=NORM C. Example of waveform before normalization Example of waveform after normalization Note • Normalization is not possible if the waveform level is too low. • See section 5.5 for information about NORMALIZE. 5-18 IM AQ6376-01EN...

  • Page 116: Curve Fitting

    Press the CURVE FIT soft key. The menu for selecting the trace to curve fit is displayed. To curve fit Trace A press the G=CRV FIT A soft key, to curve fit Trace B press G=CRV FIT B, and to curve fit Trace G, press G=CRV FIT C. Index 5-19 IM AQ6376-01EN...
  • Page 117 Selecting the Curve Fitting Algorithm Press the FITTING ALGO soft key. The algorithm setting menu is displayed. Press the soft key corresponding to the algorithm you wish to use. Note For information about the curve fitting algorithm, see the explanation. 5-20 IM AQ6376-01EN...
  • Page 118 Trace B press G=PKCVFIT B, and to peak curve fit Trace G, press G=PKCVFIT C. Step 8 and thereafter are the same as for curve fitting. Example of the screen for running peak curve fitting when the curve fitting function is set to GAUSS. Index 5-21 IM AQ6376-01EN...
  • Page 119 Curve-fits trace C. G=MKR FIT Make the curve-fit data form markers which are set currently. MKR FIT is independent on the trace. Example of a curve-fitted waveform (data range: OUTSIDE L1-L2) Example of a marker-fitted waveform (data range: ALL) 5-22 IM AQ6376-01EN...
  • Page 120 The trace display at the side of the data area changes to “PKCVFIT @". Peak Curve Fit Target Trace Soft Key Display G= PKCVFIT A Peak-curve-fits trace A. G= PKCVFIT B Peak-curve-fits trace B. G= PKCVFIT C Peak-curve-fits trace C. Index 5-23 IM AQ6376-01EN...
  • Page 121 If G=MKR FIT is selected, fitting cannot be performed if only a small number of markers are placed. A warning displays in these cases: WARNING 111: <G=MKR FIT>failed GAUSS, LORENZ: Fewer than 3 markers 3RD POLY: Fewer than 4 markers 4TH POLY: Fewer than 5 markers 5TH POLY: Fewer than 6 markers 5-24 IM AQ6376-01EN...

  • Page 122: Power Density Trace

    If trace F is set to POWER/NBW, the unit is automatically changed to dBm or If trace F is set to POWER/NBW and you change the level axis to dBm/nm or mW/nm, trace F enters FIX mode, and the waveform is no longer updated. 5-25 IM AQ6376-01EN...

  • Page 123: Marker Display

    Press the SET soft key. The fixed marker is placed in the position of the current moving marker. Fixed markers are automatically assigned numbers in order starting from 001. Fixed markers of any number can be positioned. The value is entered in the DATA ENTRY section. Moving marker Fixed markers 5-26 IM AQ6376-01EN...
  • Page 124 Press the CLEAR soft key. Clearing All Markers Press the ALL MARKER CLEAR soft key. All markers (moving markers and fixed markers) displayed on the screen are cleared. In addition, the MARKER ACTIVE soft key turns OFF. Index 5-27 IM AQ6376-01EN...
  • Page 125 4.5, “Reference Level Setting.” You can also rewrite the currently displayed waveform according to the modified reference level. The reference level setting can be set by continuing in the DATA ENTRY section. 5-28 IM AQ6376-01EN...
  • Page 126 The fixed marker’s level value is updated to track the waveform each time the displayed waveform is updated. Press MARKER. Press the MORE soft key twice. The MORE 3/3 key menu is displayed. Press the MARKER AUTO UPDATE OFF ON soft key to select ON. Index 5-29 IM AQ6376-01EN...
  • Page 127 ) soft key. Note The display unit for the marker value (wavelength or frequency) can be set independently of the waveform display’s horizontal axis units (wavelength or frequency) that were specified using the HORIZON SCALE nm/THz soft key. 5-30 IM AQ6376-01EN...
  • Page 128 Clearing Wavelength Line Markers Press the MARKER. The soft key menu for marker settings appears. Press the MORE 1/3 soft key. Press the LINE MARKER 1 OFF/ON or LINE MARKER 2 OFF/ON soft key to Index turn the function OFF. 5-31 IM AQ6376-01EN...
  • Page 129 For L2, the wavelength on the left edge of the screen is set to the measurement start wavelength. • The MKR L1-L2 ->ZOOM SPAN soft key cannot be used under the following conditions. • When both L1 and L2 are OFF. • When both SPLIT screens are on HOLD. • When the span of the active trace is 0 nm. Note For information on analysis inside the line markers, see section 6.13, “Specifying an Analysis Range.” 5-32 IM AQ6376-01EN...
  • Page 130 OFF. Line marker values are displayed in the upper left of the waveform area. Clearing All Cursors Index Press the LINE MARKER ALL CLEAR soft key. All markers (wavelength line markers and level line markers) displayed on the screen are cleared. 5-33 IM AQ6376-01EN...
  • Page 131 (MARKER ACTIVE OFF/ON) described on page 5-26 will automatically turn off. Likewise, if you turn on the moving markers (MARKER ACTIVE OFF/ON) described on page 5-26, the ADV MARKER ACTIVE OFF/ON soft key changes to OFF. • If the horizontal scale unit is set to wavenumber, you cannot use the advanced markers. 5-34 IM AQ6376-01EN...
  • Page 132 Enter the normalization bandwidth value using the rotary knob, arrow keys, or numeric keypad. Press ENTER. Power spectral density marker Note A power spectral density marker cannot be assigned to a differential waveform (based on LOG Index values) or normalized waveform. 5-35 IM AQ6376-01EN...
  • Page 133 Or, move the moving marker by referring to the information below. Movement direction Movement method Move to the right Turn the rotary knob to the right. Press the UP arrow key. Move to the left Turn the rotary knob to the left. Press the DOWN arrow key. 5-36 IM AQ6376-01EN...
  • Page 134 When the advanced marker is displayed at the peak or bottom of the waveform, press the NEXT SEARCH LEFT soft key. The advanced marker is set to the next peak (local maximum value) or bottom (local minimum value) on the left. 5-37 IM AQ6376-01EN...
  • Page 135 Press MARKER. A soft key menu for marker settings appears. Press the ADVANCE MARKER soft key. A soft key menu for advanced marker settings appears. Press the ALL CLEAR soft key. All displayed advanced markers (moving markers, power density markers, and integrated power markers) are cleared. 5-38 IM AQ6376-01EN...
  • Page 136 Wavelength and level values at moving marker Trace with moving marker Moving marker value - fixed marker value (Active trace) Trace with fixed marker 1 Wavelength and level values of fixed marker 1 Moving marker / CHOP Index Number displayed on fixed marker 5-39 IM AQ6376-01EN...
  • Page 137 Sets the difference value display as the difference between each marker and the moving marker (OFFSET). Data area when MARKER DISPLAY is set to OFFSET SPACING Sets the difference value display as the difference between each marker and the next marker. Data area when MARKER DISPLAY is set to SPACING 5-40 IM AQ6376-01EN...
  • Page 138 When line markers are displayed, they are also displayed on the OVERVIEW window. When a line marker is moved on the OVERVIEW window, it also moves in the waveform area. When moving a line marker, the mouse pointer changes to a hand tool. Index Drag Line markers linked 5-41 IM AQ6376-01EN...
  • Page 139 COARSE key, you can set the value in 0.1 nm steps. The way to move the markers and the data display between markers are the same as with the above-mentioned moving markers. Advanced marker type: /BW (power density marker) Normalization bandwidth Power density marker power values 5-42 IM AQ6376-01EN...
  • Page 140 The way to move the markers and the data display between markers are the same as with the above-mentioned moving markers. Advanced marker type: INTG (integrated power Integrated power marker power values Note When advanced markers are in use, the marker levels at the end of measurements are automatically updated. Index 5-43 IM AQ6376-01EN...

  • Page 141: Displaying A Split Screen

    ON soft key again. The display scale and waveform are updated. Returning to Normal Display Press DISPLAY. The soft key menu for setting the screen display appears. Press the NORMAL DISPLAY soft key. The screen returns to normal display (1 screen). 5-44 IM AQ6376-01EN...
  • Page 142 FIX state. (FIX @) • When a screen setting is changed from the HOLD state to NORMAL DISPLAY, the last set display scale is set as the display scale. • When a trace in the HOLD state (FIX state) is set to a state other than FIX, the HOLD is cleared automatically. When this happens, a warning message is displayed. Index 5-45 IM AQ6376-01EN...

  • Page 143: Noise Mask

    Enter a noise mask value using the rotary knob, arrow keys, or numeric key pad. Press ENTER. Press the MASK LINE VERT/HRZN soft key and select VERT or HRZN. Trace clearing Note The allowed setting range for the noise mask value is OFF (-999), and -100–0. Settings can be adjusted in steps of 1. The value changes in steps of 10 if you press the COARSE key. 5-46 IM AQ6376-01EN...
  • Page 144 VERT Displays the waveform with level values at or below the mask value as the display lower limit value (–210 dBm). Mask line Note The noise mask function is disabled when the vertical axis is linear. Index 5-47 IM AQ6376-01EN...

  • Page 145: Copying And Clearing Traces

    Press the DESTINATION TRACE soft key and select the copy destination trace (A to G). The screen returns to the previous state after a selection is made. Press the COPY EXECUTE soft key. The copy executes. Note • After the copy is executed, the copy destination trace status changes to FIX and DISP. • If the copy source and destination trace are the same, the COPY EXECUTE soft key is disabled. 5-48 IM AQ6376-01EN...
  • Page 146 Press the soft key (A through G) corresponding to the trace of the data you wish to clear. To clear the data from all traces, press the ALL TRACE soft key. Trace List Press TRACE. The soft key menu for trace settings appears. Press the TRACE LIST soft key. Index 5-49 IM AQ6376-01EN...

  • Page 147: Single Search

    With the moving marker displayed at a waveform peak or bottom, press the NEXT SEARCH RIGHT soft key. The moving marker is placed on the peak (maximum level value) or bottom (minimum level value) to the right of its current position. 5-50 IM AQ6376-01EN...
  • Page 148 Press nm/ENTER. Auto Search Press PEAK SEARCH. The menu for searching for the peak value is displayed. Press the MORE 1/2 soft key. The 2/2 soft key screen is displayed. Press the AUTO SEARCH soft key. Index 5-51 IM AQ6376-01EN...
  • Page 149 CLEAR MARKER CLEAR Clears the specified fixed marker number. The marker value in the data area is also cleared. The fixed marker number to be cleared (default value) is the last set fixed marker number. 5-52 IM AQ6376-01EN...
  • Page 150 When set to ON, a peak/bottom search is performed automatically and a moving marker is set automatically after sweeping ends. (Initial value: OFF.) Index When this key is set to ON, is displayed at the very bottom of the screen in reverse video. 5-53 IM AQ6376-01EN...

  • Page 151: Multi Search

    The procedure is the same as the procedure shown for the single search in the previous section. Finding the Level Peak/Bottom to the Right of the Moving Marker The procedure is the same as the procedure shown for the single search in the previous section. 5-54 IM AQ6376-01EN...
  • Page 152 For peak searches, the peak detection range is defined as being the levels from the measured waveform's maximum peak to the threshold value. For bottom searches, the bottom detection range is defined as being the levels from the measured waveform's minimum bottom to the threshold value. 5-55 IM AQ6376-01EN...
  • Page 153 NEXT LEVEL SEARCH NEXT SEARCH RIGHT NEXT SEARCH LEFT SET MARKER CLEAR MARKER CLEAR ALL MARKER CLEAR MODE DIFF SEARCH/ANA L1-L2 SEARCH/ANA ZOOM AREA AUTO SEARCH Note The MODE DIFF (mode judgment reference)—the peak/bottom difference—setting is shared between the multi search and single search. 5-56 IM AQ6376-01EN...

  • Page 154: Spectrum Width Measurement

    Press the ANALYSIS EXECUTE soft key. Analysis is performed according to the changed parameters, and the results are displayed in the data area. Analysis parameter setting screen Index IM AQ6376-01EN...
  • Page 155 Saving Analysis Results Continuing on from step 1, press the MORE 1/2 soft key. Press the RESULT SAVE soft key. The file list is displayed. For the subsequent steps, see section 7.6, “Saving/Loading Analysis Results Data.” IM AQ6376-01EN...
  • Page 156 DATA ENTRY section. This setting is held independently by each analysis algorithm. If the SPEC WIDTH soft key is OFF, this soft key is disabled. The value set by this soft key is shared by the analysis parameter setting screen under the PARAMETER SETTING soft key. Index IM AQ6376-01EN...

  • Page 157: Notch Width Measurement

    Notch width measured waveform (BOTTOM) Data area Analyzes the waveform with the minimum level value as a referemce. Notch width measured waveform (PEAK) Data area Analyzes the waveform with the maximum level value as a referemce. IM AQ6376-01EN...
  • Page 158 Press the ANALYSIS EXECUTE soft key. Analysis is performed according to the changed parameters, and the results are displayed in the data area. Analysis parameter setting screen Note For details about the notch width analysis algorithms and parameters, see appendix 2, “Data Calculation Algorithms for Spectrum Widths.” Index IM AQ6376-01EN...

  • Page 159: Smsr Measurement

    Press the ANALYSIS EXECUTE soft key. Analysis is performed according to the changed parameters, and the results are displayed in the data area. Analysis parameter setting screen IM AQ6376-01EN...
  • Page 160 Analysis results Analysis parameter setting value PK: Mode peak wavelength, level value MODE 1: Set the 2nd peak excluding the 2nd PK: Side mode wavelength, level value MASK AREA as the side mode. SMSR MASK: Mask setting range Index IM AQ6376-01EN...

  • Page 161: Power Measurement

    Press the ANALYSIS EXECUTE soft key. Analysis is performed according to the changed parameters, and the results are displayed in the data area. Analysis parameter setting screen Note For details on POWER analysis algorithms, see appendix 3, “Details of Analysis Functions.” IM AQ6376-01EN...

  • Page 162: Dfb-Ld, Fp-Ld, And Led Measurement

    Press the ANALYSIS EXECUTE soft key. Analysis is performed according to the changed parameters, and the results are displayed in the data area. Index Note For details on the analysis algorithms for the DFB-LD, FP-LD, and LED light sources, see appendix 3, “Details of Analysis Functions.” IM AQ6376-01EN...

  • Page 163: Pmd Measurement

    • The mode-determination threshold level during PMD analysis execution is set using the MODE DIFF soft key in the PEAK SEARCH menu. The level difference which exceeds the value set with the MODE DIFF soft key is recognized as a mode. • See section 5.13 for how to set the mode judgment threshold value. • For an explanation on the PMD analysis algorithms, see appendix 3, “Details of Analysis Functions.” 6-10 IM AQ6376-01EN...
  • Page 164 Press SWEEP. Next, press the REPEAT soft key. Repeat sweeping begins. While watching the waveform during repeat sweeping, adjust the polarization controller so as to maximize the waveform’s peak/bottom difference (the level difference between the maximum and minimum values). After the polarization controller has been adjusted, press the SINGLE soft key to perform a single sweep. Acquisition of measured waveforms is complete. Index 6-11 IM AQ6376-01EN...

  • Page 165: Wdm Transmission Signal Analysis (Except Wavenumber Mode)

    The analysis results display screen is switched with the SWITCH DISPLAY soft key. Data area Note When zooming a waveform, if you click in the list of analysis results, the waveform of the selected channel is displayed in the center of the waveform screen. 6-12 IM AQ6376-01EN...
  • Page 166 Press the ANALYSIS EXECUTE soft key. Analysis is performed according to the changed parameters, and the results are displayed in a list. Analysis parameter setting screen Note See appendix 4, “WDM Analysis Function” for a description of the WDM analysis algorithms Index and parameters. 6-13 IM AQ6376-01EN...
  • Page 167 Parameter settings may be changed as desired according to the details of the particular analysis. • Parameters related to channel detection (CHANNEL DETECTION SETTING) • Parameters related to noise level measurement (INTERPOLATION SETTING) • Parameters related to analysis results display method (DISPLAY SETTING) These are explained below. See appendix 4, “WDM Analysis Function” for a description of the parameters. 6-14 IM AQ6376-01EN...
  • Page 168 • AUTO-FIX Automatic settings (FIX type) • MANUAL-FIX Manual settings (FIX type) • AUTO-CTR Automatic settings (CENTER type) • MANUAL-CTR Manual settings (CENTER type) Index • PIT Automatic settings (PIT type) Note • If AUTO-FIX, AUTO-CTR, or PIT is selected, the NOISE AREA and MASK AREA parameters are set automatically according to the measured waveform. FITTING ALGO is set to LINEAR. • See appendix 4, “WDM Analysis Function” for a description of the WDM analysis algorithms and parameters. 6-15 IM AQ6376-01EN...
  • Page 169 This parameter is used to set the noise bandwidth. DUAL TRACE This parameter is used to turn the dual trace function ON/OFF. When the dual trace function is used, the signal level and noise level during SNR measurement can each be determined from different traces. 6-16 IM AQ6376-01EN...
  • Page 170 • To change the measurement conditions and set the initially measured waveform as the reference There are no parameter setting items since the data that was measured first becomes the reference. (See appendix 1, “WDM Wavelength GRID Table” for information on changing the grid wavelength.) Index 6-17 IM AQ6376-01EN...
  • Page 171 This parameter is used to display the range of data used in interpolation for determining the noise level. Noise measurement point Fitting curve (red) Data used for fitting (blue) MASK AREA NOISE AREA (between X - X) 6-18 IM AQ6376-01EN...

  • Page 172: Optical Amp Gain And Nf Measurement (Except Wavenumber Mode)

    The analysis results display screen is switched with the SWITCH DISPLAY soft key. Note When zooming a waveform, if you click in the list of analysis results, the waveform of the selected channel is displayed in the center of the waveform screen. Index 6-19 IM AQ6376-01EN...
  • Page 173 Press the ANALYSIS EXECUTE soft key. Analysis is performed according to the changed parameters, and the results are displayed in a list. Analysis parameter setting screen Note See appendix 5, “Optical Amp Analysis Function” for a description of the optical amp analysis algorithms and parameters. 6-20 IM AQ6376-01EN...
  • Page 174 If all traces from trace A to trace G have been set to fix mode (FIX) as a result of this action, a warning is displayed. However, this does not pose a problem because trace B is set to write mode in the next step. 6-21 IM AQ6376-01EN...
  • Page 175 Press the WRITE B soft key. Trace B enters write mode. Measure the waveform of the output light with the same measurement conditions used for measuring the signal light waveform. Examples of signal and output light waveforms 6-22 IM AQ6376-01EN...
  • Page 176 MODE DIFF This parameter sets the minimum value for the peak/bottom difference during channel peak detection. If the waveform peak/bottom difference equals or exceeds this value, it is detected as a mode peak. THRESH LEVEL MODE DIFF Index 6-23 IM AQ6376-01EN...
  • Page 177 LINEAR and does not need to be set manually. FITTING AREA This parameter is used to set the range of waveform data to be used in determining the ASE level through interpolation. This parameter is only set when “ASE ALGO” is set to MANUAL-FIX. 6-24 IM AQ6376-01EN...
  • Page 178 TRACE B waveform and set to RBi. • CAL DATA: Set the actual resolution value stored in the instrument to RBi. SHOT NOISE Sets whether the Shot Noise component is included in computation of the NF value. The default is ON. Index • ON: Shot Noise component included in computation of the NF value. • OFF: Shot Noise component not included in computation of the NF value. 6-25 IM AQ6376-01EN...

  • Page 179: Optical Filter Characteristics Measurement (Except Wavenumber Mode)

    Press the CLOSE WINDOW soft key. The FILTER-PK analysis parameter setting screen closes, and the soft key menu returns to the previous stage. Press the ANALYSIS EXECUTE soft key. Analysis is performed according to the changed parameters, and the results are displayed in a list. 6-26 IM AQ6376-01EN...
  • Page 180 Press the ANALYSIS EXECUTE soft key. Analysis is performed according to the changed parameters, and the results are displayed in a list. Note See appendix 6, “Optical Filter Analysis Function” for a description of the optical filter analysis algorithms and parameters. Index 6-27 IM AQ6376-01EN...
  • Page 181 Press the CLOSE WINDOW soft key. The WDM FIL-PK analysis parameter setting screen closes, and the soft key menu returns to the previous stage. Press the ANALYSIS EXECUTE soft key. Analysis is performed according to the changed parameters, and the results are displayed in a list. 6-28 IM AQ6376-01EN...
  • Page 182 Press the ANALYSIS EXECUTE soft key. Analysis is performed according to the Index changed parameters, and the results are displayed in a list. Note See appendix 6, “Optical Filter Analysis Function” for a description of the optical filter analysis algorithms and parameters. 6-29 IM AQ6376-01EN...
  • Page 183 The following configuration and general procedure is used to measure WDM optical filter characteristics. A pass band type WDM optical filter is used as an example. Reference spectrum AQ6376 Wideband light source ex. TRACE A Spectrum measurement after passing through the filter AQ6376 Wideband light source ex. TRACE B 6-30 IM AQ6376-01EN...
  • Page 184 Press the LOG MATH soft key. The math function selection menu is displayed. Press the C = A-B (LOG) soft key. The waveform which is obtained by subtracting the trace B waveform from the trace A waveform is displayed on trace C. Index 6-31 IM AQ6376-01EN...
  • Page 185 The channel detection and reference wavelength analysis results for each channel vary depending on the algorithm selected. • When PEAK is selected Each mode peak is detected as a channel. The peak wavelength of each channel is the reference wavelength. Peak level 6-32 IM AQ6376-01EN...
  • Page 186 MEAN WL • When GRID FIT is selected The mode peak detected within GRID WL [PLUSMINUS SYMBOL] (TEST BAND/2) is set as the channel. The GRID wavelength nearest to each channel is the reference wavelength. GRID WL Index 6-33 IM AQ6376-01EN...
  • Page 187 These parameters are set for each WDM optical filter analysis item. The analysis parameter setting screen is displayed. Note See appendix 6, “Optical Filter Analysis Function” for a description of the optical filter analysis algorithms and parameters. 6-34 IM AQ6376-01EN...
  • Page 188 GHz, 50 GHz, 25 GHz, or 12.5 GHz can be used. Setting the Reference Wavelength Press the REFERENCE WAVELENGTH soft key. A screen for specifying the standard wavelength is displayed. Enter the standard wavelength using the rotary knob or arrow keys, then press nm/ENTER. Index 6-35 IM AQ6376-01EN...
  • Page 189 Press the REFERENCE WAVELENGTH soft key. A screen for specifying the standard wavelength is displayed. Enter the standard wavelength using the rotary knob or arrow keys, then press nm/ENTER. Note • If this Grid Table is edited and then the CANCEL key is pressed without pressing the EXEECUTE key, the edits made to the custom Grid table are canceled. • Press the EXECUTE key to apply the edits in the custom Grid table to the analysis function. 6-36 IM AQ6376-01EN...
  • Page 190 Press the MORE soft key twice. The MORE 3/3 key menu is displayed. Press the MARKER UNIT soft key. The marker unit selection menu is displayed. Press the THz soft key. Note Index For a diagram of soft key operation, see section 5.9, "Displaying Markers." 6-37 IM AQ6376-01EN...
  • Page 191 Sets the grid table reference wavelength. This can be set in the range of 1500.0000 to 3400.0000 nm. VALUE EDIT You can edit channel points. Note For details on the Grid table, see appendix 1, "WDM Wavelength Grid Table." 6-38 IM AQ6376-01EN...

  • Page 192: Measurement Of Level Fluctuations In Single-Wavelength Light (0 Nm Sweeping)

    Press the 0 nm SWEEP TIME soft key. A screen for specifying the sweep time is displayed. Enter a numerical value using the rotary knob or numeric key pad, then press nm/ENTER. Press SWEEP, followed by the REPEAT soft key. Sweeping begins. Index 6-39 IM AQ6376-01EN...
  • Page 193 Sweep time setting Note • When the sweep range is set to 0 nm, the horizontal axis is set as the time axis as a result. • The sweeping time varies depending on the measurement sensitivity (SENS/MODE soft key under SETUP). If the setting for this key is less than the sweeping time for each sensitivity, the setting for the key is invalid and the MINIMUM setting is used. 6-40 IM AQ6376-01EN...
  • Page 194 (SENS/MODE soft key under SETUP). If the setting for this key is less than the sweeping time for each sensitivity, the setting for the key is invalid and the MINIMUM setting is used. The sampling points are automatically set to 1001. Index 6-41 IM AQ6376-01EN...

  • Page 195: Go/No-Go Judgment (Template)

    DELETE soft key. To delete all template data points, press the ALL DELETE soft key. Note • For information about extrapolation methods, see the explanation. • The same wavelength/level data prior to insertion are inserted as data in the points that were inserted using the INSERT soft key. • When the target line is turned OFF with the TEMPLATE DISPLAY soft key, if you edit the template data at the target line, the target line TEMPLATE DISPLAY turns ON. 6-42 IM AQ6376-01EN...
  • Page 196 Move the cursor to the template data file to load from the file list, then press the EXECUTE soft key. Template Data Types The following types of template data are available. • CSV (comma delimited) files created on an external PC • Waveform files of the instrument (.CSV or .BIN files) Index Note • After loading data, WL SHIFT and LVL SHIFT in the template are set to zero. • For information about data formats when creating template data on an external PC, see the Explanation subsection. 6-43 IM AQ6376-01EN...
  • Page 197 RELATIVE switching function. The template data themselves can be shifted by changing the ZOOM CENTER WL or REF LEVEL. The following settings are an example. • ZOOM CENTER WL: 1547.000 nm • REF LEVEL: 0.00 dBm Creating a Template in ABSOLUTE Mode 6-44 IM AQ6376-01EN...
  • Page 198 Enter 1544.000 using the rotary knob or arrow keys, then press nm/ENTER. Press LEVEL, followed by the REF LEVEL soft key. Enter 10.00 using the rotary knob or arrow keys, then press nm/ENTER. Index The template relative value does not change after editing. 6-45 IM AQ6376-01EN...
  • Page 199 Press the TEMPLATE EDIT soft key. The edit menu is displayed. Press the MODE ABS/REL soft key, then select ABS. The instrument enters Absolute mode. The results and template are shifted 3 nm to the left on screen. 6-46 IM AQ6376-01EN...
  • Page 200 Note If the GO/NO GO soft key is set to ON, a Go/No Go test is performed according to the test type, even if the TEMPLATE DISPLAY soft key indicator is set to OFF. Index 6-47 IM AQ6376-01EN...
  • Page 201 1552.5 Wavelength (nm) Lower Limit Line Judgment FAIL Judgment conditions (measured data) <= (upper limit line) -> Go (PASS) (upper limit line) < (measured data) -> No Go (FAIL) Lower Limit Line 1547.5 1550 1552.5 Wavelength (nm) 6-48 IM AQ6376-01EN...
  • Page 202 This function can be used for displaying and adjusting the target spectrum serving as a reference for adjustments such as adjusting the optical axis of an optical device. Target Line Display FAIL Judgment conditions Go/No Go cannot be determined for target line only. Upper Limit Line Target Line Lower Limit Line 1547.5 1550 1552.5 Wavelength (nm) Index 6-49 IM AQ6376-01EN...
  • Page 203 NG point is outside the displayed range, the judgment result is PASS. PASS Upper Limit Line Lower Limit Line 1549 1550 1551 Wavelength (nm) Note When performing Go/No Go judgment, display the wavelength range on the screen. The Go/No Go testing process is not performed on wavelength ranges that are not displayed. 6-50 IM AQ6376-01EN...
  • Page 204 (not linked to the waveform). 1547.5 1550 1552.5 1546 1548.5 1551 Wavelength (nm) Wavelength (nm) When ZOOM CENTER WL = 1550 nm When ZOOM CENTER WL is changed to 1548.5 nm (template not moved) Index 6-51 IM AQ6376-01EN...
  • Page 205 Wavelength (nm) : Template data point For Extrapolation Type of None NG area Upper limit line Lower limit line :Template data point Wavelength (nm) Note • Data created through extrapolation is limited by the LOG LIMIT setting. • For templates set to None, the Go/No Go judgment range from the template can be narrower than the waveform display screen. Pay attention to the judgment execution ranges for the upper limit and lower limit lines. 6-52 IM AQ6376-01EN...
  • Page 206 50,001 template data points can be defined. Save the template data created on an external PC to a USB storage device for loading in the instrument. <- Header for the AQ6376 AQ6376 <- Header indicating template data <- Header indicating the template type (ABSOLUTE or RELATIVE) <- Extrapolation type (A or B or None)

  • Page 207: Specifying An Analysis Range

    To cancel, press the SEARCH/ANA L1-L2 soft key, and select OFF. Analysis is performed over the entire screen. Totalized power measuring range Note • If both L1 and L2 are set, measurement is executed between line markers 1 and 2. • If just L1 is set, the measurement occurs over the span from line marker 1 to the right edge of the screen. • If just L2 is set, the measurement occurs over the span from the left edge of the screen to line marker 2. • If neither L1 nor L2 is set, measurement is performed from the set start wavelength to the stop wavelength. 6-54 IM AQ6376-01EN...
  • Page 208 Press the POWER soft key. Analysis is performed between display scales, and the results are displayed in the data area. Data area Index Note • When the zoom area search function is enabled, is displayed in inverse video. • If the SEARCH/ANA ZOOM AREA key is OFF, analysis is performed over the entire range of the measurement scale. • For details on the POWER analysis function, see appendix 3, “Details of Analysis Functions.” 6-55 IM AQ6376-01EN...
  • Page 209 ANA L1-L2 and SEARCH/ANA ZOOM AREA soft keys are ON. As both of these soft keys are ON, at the bottom of the screen are displayed in inverse video. The area between line markers overlaps the zoom area 6-56 IM AQ6376-01EN...

  • Page 210: Correcting Displayed Values

    Enter a level shift amount using the rotary knob, arrow keys, or numeric key pad. Press ENTER. Index Note After entering the wavelength or level shift amount, the setting is applied to the displayed values upon the next measurement. 6-57 IM AQ6376-01EN...
  • Page 211 NA is not in the range shown above. Input optical fiber numerical aperture and level error (typical characteristics) 0.50 0.40 0.30 0.20 0.10 0.00 -0.10 -0.20 -0.30 -0.40 -0.50 0.101 0.102 0.103 0.104 0.105 0.106 0.107 0.108 0.109 0.110 Numerical Aperture 6-58 IM AQ6376-01EN...
  • Page 212 The setting range is -60.00 to 60.00 dB. Settings can be adjusted in steps of 0.01 dB. The value changes in steps of 0.1 dB if you press the COARSE key. When setting the wavelength shift amount, is displayed at the bottom of the screen in inverse video. Index 6-59 IM AQ6376-01EN...

  • Page 213: Analysis Data Logging

    SNR. Time scale Cursor information (C1, C2, C2-C1) Cursors (C1, C2) Thumbnail area. Displays the waveform data at the current cursor position. Overview display. The current graph area is indicated with a dotted frame. Logging data list 6-60 IM AQ6376-01EN...

  • Page 214: App

    Press the CLOSE WINDOW soft key. The logging parameter setting screen closes, and the soft key menu returns to the previous level. Note The LOGGING PARAMETER soft key cannot be used while logging measurement is in progress. Index 6-61 IM AQ6376-01EN...
  • Page 215 For the operating procedure, see steps 4 to 6 in “When changing the analysis parameters” of section 6.7. For parameter descriptions, see section 6.7. If you change a parameter, the value specified in section 6.7 will also change (because the parameter is shared). 6-62 IM AQ6376-01EN...
  • Page 216 • Setting the Minimum Peak/Bottom Difference of the Mode Judgment Reference Press the ANALYSIS PARAMETER soft key. The menu for detecting peak values is displayed. Press the MODE DIFF soft key. The screen for setting the mode judgment reference is displayed. Enter the mode judgment reference using the rotary knob, arrow keys, or numeric keypad. Press nm/ENTER. Note • For a description of the mode judgment reference, see “MODE DIFF” in section 5.13. • If you change a setting, the value specified in section 5.13 will also change (because the parameter is shared). Index 6-63 IM AQ6376-01EN...
  • Page 217 For the operating procedure, see steps 4 to 6 in section 6.5. For parameter descriptions, see appendix 3. If you change a parameter, the value specified in section 6.5 will also change (because the parameter is shared). 6-64 IM AQ6376-01EN...
  • Page 218 If you do not want to delete the existing logging data, press the CANCEL soft key. The previous soft key menu will return. Note • When TRACE LOGGING is ON, the AQ6376 checks the amount of free space in the temporary trace data storage space before starting to log. If there is insufficient free memory space, a warning will appear.
  • Page 219 (normal spectrum waveform display). Note You cannot use the SPECTRUM DISPLAY soft key when data logging is stopped. • Returning to the Previous Screen Press the RETURN soft key. The AQ6376 returns to the previous screen. 6-66 IM AQ6376-01EN...
  • Page 220 LEVEL soft key. To display the SNR graph, press the SNR soft key. When the Logging Item Is PEAK/MULTI-PEAK To display the wavelength graph, press the PEAK WL soft key. To display the level graph, press the PEAK LEVEL soft key. Index 6-67 IM AQ6376-01EN...
  • Page 221 • To display the center wavelength graph: CENTER WL • To display the spectral width graph of the center wavelength based on the -XdB WIDTH (Center WL/SPWD) parameter: SPEC WD • To display the total power graph: MORE1/2 and then POWER • To display the mode offset graph: MORE1/2 and then OFFSET • To display the spectral width (σ) graph of the center wavelength based on the RMS parameter: MORE1/2 and then SIGMA • To display the spectral width (Kσ) graph of the center wavelength based on the RMS parameter: MORE1/2 and then K SIGMA 6-68 IM AQ6376-01EN...
  • Page 222 CURR (displays current values) or SUMM (summary display: MAX, MIN, MAX/ MIN). If you select summary display in step 4, press the SUMMARY TYPE MAXMIN/ AVG soft key. The items shown in the summary display switches to maximum/ minimum values or average/standard deviation values. Index 6-69 IM AQ6376-01EN...
  • Page 223 The reference value is set to the measured value at the cursor time position (e.g., 46 s). Note You cannot use the REF DATA SET soft key if data logging has not been executed and no data exists. 6-70 IM AQ6376-01EN...
  • Page 224 The difference between the two cursor values (C2 – C1) is displayed below the cursor values. The horizontal axis shows the logging time. The vertical axis shows the value of the graph data (GRAPH ITEM). You cannot move the cursors to an area where there is no logging data. Index 6-71 IM AQ6376-01EN...
  • Page 225 Press the CURSOR/SCALE soft key. The cursor/scale soft key menu appears. Zooming in on the Horizontal Scale Press the X ZOOM IN soft key. The horizontal scale is expanded in 1-2-5 steps at the current cursor (cursor C1 or C2) position. Center Expand 6-72 IM AQ6376-01EN...
  • Page 226 (cursor C1 or C2) position. Center Reduce Zooming in on the Vertical Scale Press the Y ZOOM IN soft key. The vertical scale is expanded in 1-2-5 steps at the current cursor (cursor C1 or C2) position. Expand Center value Index 6-73 IM AQ6376-01EN...
  • Page 227 Center value Initializing the Graph Display Zoom Press the ZOOM INITIALIZE soft key. Note Zooming of the vertical and horizontal scales will be initialized if you perform any of the following operations. • If you clear the logging data • If you start a new data logging session • If you initialize the data (section 8.2) 6-74 IM AQ6376-01EN...
  • Page 228 If you press the RETURN soft key a few times to return to the ADVANCE level, the waveform data of the specified trace will be displayed. Waveform data is loaded. Index Note You cannot use the TRACE DATA RECALL soft key in the following situations. • If data logging has not been executed and no data exists • If the TRACE LOGGING parameter is set off and no waveform data exists. 6-75 IM AQ6376-01EN...
  • Page 229 Press ADVANCE and then the DATA LOGGING soft key. The soft key menu for data logging appears. Press the LOGGING DATA SAVE soft key. The soft key menu for saving the data and TRACELIST appear. For the operating procedure, see step 4 and subsequent steps in section 7.10. 6-76 IM AQ6376-01EN...
  • Page 230 If you do not want to delete the logging data, press the CANCEL soft key. The previous soft key menu will return. Index Note This function is the same as the deletion performed for the data deletion confirmation message that appears when data logging is executed. 6-77 IM AQ6376-01EN...
  • Page 231 REF data time display • Summary Display Displays the current analysis data and the analysis data of MAX, MIN, MAX-MIN values from the start of data logging to the current. The summary display can display just one of the analysis items that you choose. ABS (absolute value) display REL (relative value) display 6-78 IM AQ6376-01EN...
  • Page 232 If you want to log many channels, use MODE1. If you want to log many values, use MODE2. The AQ6376 automatically detects the number of channels. MODE1: Up to 1024 channels can be logged. The maximum number log entries is 2001.
  • Page 233 If the analysis data during measurement is within the effective range, it will be logged as the same peak. If it is not, the AQ6376 assumes that the previous peak has disappeared and a new peak has appeared and adds a new peak.
  • Page 234 Zooming is performed in 1-2-5 steps. Example: The horizontal scale settings change like this: 5 s/div, 2 s/div, 1 s/div The vertical scale settings change like this: 500 nm/div, 200 nm/div, 100 nm/ Index 6-81 IM AQ6376-01EN...
  • Page 235 Supported USB Storage Media The instrument supports USB 1.0 or USB 2.0 compliant USB memory devices or hard disks. For details, contact your nearest Yokogawa representative. Removing USB Storage Media Always follow the procedure below when removing USB storage media.

  • Page 236: Temporarily Saving And Redisplaying Traces To And From Internal Memory

    Select a destination memory number using the rotary knob, arrow keys, or numeric key pad. Press the soft key corresponding to the trace to be saved. The trace data is saved to the selected memory number. Change display contents IM AQ6376-01EN...
  • Page 237 Select the memory number of the data to be cleared using the rotary knob, arrow keys, or the UP/DOWN arrow soft keys. Press the EXECUTE soft key. The data of the selected memory number is cleared. Change display Index contents IM AQ6376-01EN...
  • Page 238 (data measurement condition). The displayed items of the memory list change to labels or measurement conditions. You can also change the display contents of the memory list by using the SAVE, RECALL, and CLEAR menus. LBL (Label) CONDIN (Measurement conditions) IM AQ6376-01EN...
  • Page 239 C-F, F-C, C+F, E+F, F-E, E+F, F-E, E+F Linear calculation display waveforms A+B LIN, A-B LIN, B-A LIN, 1-k(A/B), 1-k(B/A), C+D LIN, C-D LIN, D-C LIN, D+E LIN, D-E LIN, E-D LIN, C+F LIN, C-F LIN, F-C LIN, E+F LIN, E-F LIN, F-ELIN Index IM AQ6376-01EN...

  • Page 240: Saving/Loading Displayed Data

    Press the ITEM SELECT soft key. The menu for selecting the type of files to be saved is displayed. Press the TRACE soft key. TRACE is selected, and the screen returns to the previous stage. Press the WRITE soft key. The TRACE LIST is displayed on screen. IM AQ6376-01EN...
  • Page 241 Press the MEMORY soft key and specify a save destination of INT (internal memory) or EXT (USB storage medium). Press the FILE TYPE soft key and specify a data format of BIN (binary) or CSV (ASCII format). Index IM AQ6376-01EN...
  • Page 242 Press the FILE NAME soft key. The text entry window and corresponding soft key menu are displayed. Follow the instructions in section 3.3 to enter a file name. Press the DONE soft key. The file name is confirmed, and the screen returns to the previous stage. IM AQ6376-01EN...
  • Page 243 Press the FILE SORT soft key. The file sort menu is displayed. Press the soft key corresponding to the item by which to sort. The files are sorted in ascending order by the selected item. Index IM AQ6376-01EN...
  • Page 244 Select a file to load from the file list using the rotary knob or the arrow keys. If the VIEW soft key is pressed, the display toggles between list and thumbnail display. To sort the files, see page 8-9. Thumbnail display File sort 7-10 IM AQ6376-01EN...
  • Page 245 Executing the Load Press the EXECUTE soft key. The file is loaded and displayed as the specified trace number. When the RETURN soft key is pressed, the file is not loaded. The screen returns to the previous stage. Index 7-11 IM AQ6376-01EN...
  • Page 246 Press the MEMORY soft key and specify a save destination of INT (internal memory) or EXT (USB storage medium). Press the FILE TYPE soft key and specify a data format of BIN (binary) or CSV (ASCII format). 7-12 IM AQ6376-01EN...
  • Page 247 Follow the instructions in section 3.3 to enter a file name. Press the DONE soft key. The file name is confirmed, and the screen returns to the previous stage. Sets the file name Moves the cursor Index Creates a directory Sorts the file list 7-13 IM AQ6376-01EN...
  • Page 248 When the RETURN soft key is pressed, the data is saved. The screen returns to the previous stage. When overwriting during a save, a confirmation message appears. Press the YES soft key. To cancel the save press NO soft key. 7-14 IM AQ6376-01EN...
  • Page 249 Select a file to load from the file list using the rotary knob or the arrow keys. You can also press the FILE SORT soft key to sort the files. For more information, see page 7-9. File sort Index 7-15 IM AQ6376-01EN...
  • Page 250 Executing the Load Press the EXECUTE soft key. The file is loaded and registered into the specified memory number. When the RETURN soft key is pressed, the file is not loaded. The screen returns to the previous stage. 7-16 IM AQ6376-01EN...
  • Page 251 The file size differs depending on the data saved. Be sure to check whether sufficient space is available before saving. File Sort Index You can sort the file list in ascending order by file name, file type, file date, or label. 7-17 IM AQ6376-01EN...
  • Page 252 7.3 Saving/Loading Displayed Data CSV Data Format CSV data is saved in the following format. 75CSV // AQ6376 OPTICAL SPECTRUM ANALYZER // Header "CTRWL",1550.500000 "SPAN", 5.000000 "START WL",1548.000000 "STOP WL",1553.000000 "WLFREQ", 0 "REFL", +5.5 "LSCL",10.0 "RESLN",0.050 "AVG", 1 "SMPLAUTO", "SMPL", "SMPLINTVL",0.0100...
  • Page 253 7.3 Saving/Loading Displayed Data Header 75CSV File header Label (57 characters) // AQ6376 OPTICAL SPECTRUM ANALYZER // No. of measurement condition parameters Measurement Condition Parameters "CTRWL",1550.500000 Center wavelength Span "SPAN", 5.000000 "START WL",1548.000000 Measurement start wavelength Measurement stop wavelength "STOP WL",1553.000000 Horizontal axis scale mode "WLFREQ", 0...
  • Page 254 "E-F" E-F(LOG) "CVFT C",** CRV FIT C "C-D" C-D(LOG) "F-E" F-E(LOG) "CVFTPK A",** PK CRV FIT A "D-C" D-C(LOG) "C+F" C+F(LOG) "CVFTPK B",** PK CRV FIT B "D-E" D-E(LOG) "E+F" E+F(LOG) "CVFTPK C",** PK CRV FIT C 7-20 IM AQ6376-01EN...
  • Page 255 Header indicating the start of the trace data ****.****,*.***E±***(CR)(LF) Wavelength value and level value (LINEAR) of first point ****.****,*.***E±***(CR)(LF) Wavelength value and level value (LINEAR) of second point ****.****,*.***E±***(CR)(LF) Wavelength value and level value (LINEAR) of final point Index 7-21 IM AQ6376-01EN...

  • Page 256: Saving/Loading Displayed Data(All Trace)

    Press the ITEM SELECT soft key. A menu for selecting files to save appears. Press the ALL TRACE soft key. ALL TRACE becomes selected, and the screen returns to the previous menu. Press the WRITE soft key. TRACE LIST is displayed on screen. Trace List File List 7-22 IM AQ6376-01EN...

  • Page 257: Index

    Press the FILE NAME soft key. The text input window and corresponding soft key menu appear. Enter a file name according to the instructions in section 4.3. Press the DONE soft key. The file name is entered, and you are returned to the previous screen. Index 7-23 IM AQ6376-01EN...
  • Page 258 Press the ITEM SELECT soft key. A menu for selecting files to save appears. Press the TRACE ALL soft key. TRACE becomes selected, and the screen returns to the previous menu. Press the READ soft key. The file list is displayed on screen. File list Trace list 7-24 IM AQ6376-01EN...
  • Page 259 Executing the load Press the EXECUTE soft key. The file is loaded, and the specified trace number is displayed. If you press the RETURN soft key, loading is cancelled. The screen returns to the previous menu. Index 7-25 IM AQ6376-01EN...
  • Page 260 The maximum file size differs depending on the data being saved. Make sure the save destination has sufficient space before saving. Sorting files The file list can be sorted in ascending order by FILE NAME, FILE DAT, or FILE LABEL. 7-26 IM AQ6376-01EN...
  • Page 261 (TRACE A) (TRACE B) (TRACE G) Header 75CSVG File header // AQ6376 OPTICAL SPECTRUM ANALYZER // label (57 characters) Measurement condition parameters Measurement conditions of each trace, measurement conditions when files were saved, and trace settings are saved. [MEAS SETTING] section:...

  • Page 262: Saving/Loading Setting Data

    Press the ITEM SELECT soft key. The soft key menu switches. Press the SETTING soft key. SETTING is selected, and the screen returns to the previous stage. Press the WRITE soft key. The file list is displayed. 7-28 IM AQ6376-01EN...
  • Page 263 Follow the instructions in section 3.3 to enter a file name. Press the DONE soft key. The file name is confirmed, and the screen returns to the previous stage. Sets the file name Creates a directory Sorts the file list Index 7-29 IM AQ6376-01EN...
  • Page 264 Press the ITEM SELECT soft key. The soft key menu switches. Press the SETTING soft key. SETTING is selected, and the screen returns to the previous stage. Press the READ soft key. The file list is displayed. 7-30 IM AQ6376-01EN...
  • Page 265 Press the EXECUTE soft key. The file is loaded and the settings on the instrument are changed. When the RETURN soft key is pressed, the file is not loaded. The screen returns to the previous stage. Index 7-31 IM AQ6376-01EN...
  • Page 266 !#$%&’()- 0123456789@ ABCDEFGHIJKLMNOPQRSTUVWXYZ^ abcdefghijklmnopqrstuvwxyz{}¯ File Size The file size is approximately 74 KB. File Sort You can sort the file list in ascending order by file name, file type, file date, or label. 7-32 IM AQ6376-01EN...
  • Page 267 Press the ITEM SELECT soft key. The soft key menu switches. Press the DATA soft key. DATA is selected, and the screen returns to the previous stage. Press the WRITE soft key. The file list is displayed. Index 7-33 IM AQ6376-01EN...
  • Page 268 Selecting Data Items to Save Press the OUTPUT ITEM SETTING soft key. The menu for selecting data items to be saved is displayed. Press the Data Item soft key and specify ON (save) or OFF (do not save). 7-34 IM AQ6376-01EN...

  • Page 269: Saving/Loading Analysis Results Data

    When the RETURN soft key is pressed, the data is saved. The screen returns to the previous menu. When overwriting during a save, a confirmation message appears. Press the YES soft key. To cancel the save press NO soft key. Index 7-35 IM AQ6376-01EN...
  • Page 270 Select a file to load from the file list using the rotary knob or the arrow keys. You can also press the FILE SORT soft key to sort the files. For more information, see page 7-9. Sorts files 7-36 IM AQ6376-01EN...
  • Page 271 7.6 Saving/Loading Analysis Results Data Executing the Load Press the EXECUTE soft key. The file is loaded. When the RETURN soft key is pressed, the file is not loaded. The screen returns to the previous stage. Index 7-37 IM AQ6376-01EN...
  • Page 272 If files of the same name reside in the save destination, you can select whether to overwrite them or add the data. OVER: Overwrites the file. ADD: Adds the data to be saved to the existing file data. 7-38 IM AQ6376-01EN...
  • Page 273 "CTRWL 1551.670000" "SPAN 20.000000" "REFL -10.0 dBm" "LSCL 10.0" Measurement condition parameter "RESLN 0.100" "AVG", 1 "SMPL 2001" "HIGH 2" "NMSK OFF" 1541.6700, -23.200 Sampling point portion of the waveform data (wavelength and level value) ... Index 7-39 IM AQ6376-01EN...
  • Page 274 FIT ALGO,LINEAR NO.,WAVELENGTH[nm],INPUT LVL[dBm],OUTPUT LVL[dBm], ASE LVL[dBm],RESOLN[nm],GAIN[dB],NF[dB] 1,1544.4983,-29.320,-2.260,-22.281,0.102,27.017,8.533 2,1545.3041,-29.530,-2.420,-22.184,0.101,27.064,8.619 CTRWL,1551.670000 SPAN,20.000000 REFL[dBm],-10.0 Measurement condition parameter LSCL,10.0 RESLN,0.100 AVG,1 SMPL,2001 HIGH 2 NMSK,OFF 1541.6700, -23.200 Sampling point portion of the waveform data (wavelength and level value) 7-40 IM AQ6376-01EN...

  • Page 275: Saving/Loading Program Data

    Press the ITEM SELECT soft key. The soft key menu switches. Press the PROGRAM soft key. PROGRAM is selected, and the screen returns to the previous stage. Press the WRITE soft key to display the program list and file list. Program list Index File list 7-41 IM AQ6376-01EN...
  • Page 276 Press the CURSOR soft key, then set the cursor selection to UP (on the program list side). Select the program number of the data to save using the rotary knob, arrow keys, or numeric key pad. Selected program number 7-42 IM AQ6376-01EN...
  • Page 277 When the RETURN soft key is pressed, the data is saved. The screen returns to the previous menu. When overwriting during a save, a confirmation message appears. Press the YES soft key. To cancel the save press NO soft key. Index 7-43 IM AQ6376-01EN...
  • Page 278 Select a file to load from the file list using the rotary knob or the arrow keys. You can also press the FILE SORT soft key to sort the files. For more information, see page 7-9. Sorts files 7-44 IM AQ6376-01EN...
  • Page 279 Executing the Load Press the EXECUTE soft key. The file is loaded and registered to the specified program number. When the RETURN soft key is pressed, the file is not loaded. The screen returns to the previous stage. Index 7-45 IM AQ6376-01EN...
  • Page 280 56 characters (including the extension). The following characters can be used in file names. !#$%&’()- 0123456789@ ABCDEFGHIJKLMNOPQRSTUVWXYZ^ abcdefghijklmnopqrstuvwxyz{}¯ File Size The file size is approximately 13 KB. Data Format Saves the file in binary format. 7-46 IM AQ6376-01EN...

  • Page 281: Saving Screen Image Data

    Press the ITEM SELECT soft key. The soft key menu switches. Press the GRAPHIC soft key. GRAPHIC is selected, and the screen returns to the previous stage. Press the WRITE soft key to display the file list. Index 7-47 IM AQ6376-01EN...
  • Page 282 Press the MODE soft key and specify B&W (black & white), COLOR, or PRESET COL (only waveform markers in color). Selecting the Color and File Format Press the FILE TYPE soft key to select BMP or TIFF. 7-48 IM AQ6376-01EN...
  • Page 283 When the RETURN soft key is pressed, the data is saved. The screen returns to the previous stage. When overwriting during a save, a confirmation message appears. Press the YES soft key. To cancel the save press NO soft key. Index 7-49 IM AQ6376-01EN...
  • Page 284 The file size differs depending on the data format and color specified. BMP (color): Differs depending on the display color. BMP (B&W): Approximately 52 KB TIFF (color): Approximately 412 KB TIFF (black & white): Approximately 52 KB 7-50 IM AQ6376-01EN...

  • Page 285: Saving/Loading Template Data

    Press the ITEM SELECT soft key. The soft key menu switches. Press the TEMPLATE soft key. TEMPLATE is selected, and the screen returns to the previous stage. Press the WRITE soft key to display the template list and file list. Template list Index File list 7-51 IM AQ6376-01EN...
  • Page 286 EXT (USB storage medium). Selecting a Template to Save Press the @@@@->FILE soft key (where @@@@ is UPPER, LOWER, or TARGET). The template selection screen appears. Press the soft key corresponding to the template to be saved. Selected template 7-52 IM AQ6376-01EN...
  • Page 287 When the RETURN soft key is pressed, the data is saved. The screen returns to the previous stage. When overwriting during a save, a confirmation message appears. Press the YES soft key. To cancel the save press NO soft key. Index 7-53 IM AQ6376-01EN...
  • Page 288 Select a file to load from the file list using the rotary knob or the arrow keys. You can also press the FILE SORT soft key to sort the files. For more information, see page 7-9. Sorts files 7-54 IM AQ6376-01EN...
  • Page 289 Press the soft key corresponding to the template to be loaded to. Executing the Load Press the EXECUTE soft key. The file is loaded as the specified template. When the RETURN soft key is pressed, the file is not loaded. The screen returns to the previous stage. Index 7-55 IM AQ6376-01EN...
  • Page 290 File Size The file size differs depending on the data. Data Format You can save the file in CSV format. Data Format Header indicating the AQ6376, AQ6376 Header indicating template data TEMPLATE, TYPE,ABSOLUTE Template type (ABSOLUTE or RELATIVE) EXTRAPOL,A Extrapolation type (A, B, or NONE) 1540.000,-20.00...

  • Page 291: Saving And Loading Logging Data

    Press the ITEM SELECT soft key. The soft key menu changes. Press the MORE 1/2 soft key. Press the LOGGING soft key. LOGGING is selected, and the menu returns to the FILE level. Press the WRITE soft key. A file list appears. Index 7-57 IM AQ6376-01EN...
  • Page 292 Press the FILE NAME soft key. The text entry window and corresponding soft key menu appear. Follow the instructions in section 3.3 to enter a file name. Press the DONE soft key. The file name is confirmed, and the screen returns to the previous level. NEW FILE 7-58 IM AQ6376-01EN...
  • Page 293 If you press the RETURN soft key, the data will not be saved. The menu returns to the previous level. When overwriting a file, a confirmation message appears. Press the YES soft key. To cancel, press the NO soft key. Select an existing file. Index 7-59 IM AQ6376-01EN...
  • Page 294 Using the rotary knob or arrow keys, select the file you want to load from the file list. You can sort the files by pressing the FILE SORT soft key. For the operating procedure, see page 7-9. 7-60 IM AQ6376-01EN...
  • Page 295 LG7 (binary format): .LG7 CSV (ASCII format): .CSV Logging data saved to CSV format cannot be loaded into the AQ6376. If waveform data is also saved (TRACE LOGGING is set to ON), waveform data will be included in the LG9 file, and thus the file size will be large.
  • Page 296 + logging data (approx. 100 MB max.) CSV Data Format CSV data is saved in the following format. Header 75 LOG1 File header // AQ6376 OPTICAL SPECTRUM ANALYZER // Label (57 characters) ********* Instrument number Software Version Rxx.xx Firmware version Waveform Condition Parameters The waveform condition format is the same as that of the waveform file.

  • Page 297: Creating Files

    Press the FILE OPERATION soft key. The file operation menu is displayed. Press the MEMORY soft key and specify INT (internal memory) or EXT (USB storage medium). A file list of the selected medium is displayed. Index 7-63 IM AQ6376-01EN...
  • Page 298 Press the DELETE soft key. A deletion confirmation message appears. Press the YES soft key. The selected file or directory is deleted. Press the NO soft key to cancel deletion of the file or directory. The screen returns to the previous state. 7-64 IM AQ6376-01EN...
  • Page 299 Note When pasting in the same directory as the copy source, change the name before pasting. Name of file/directory to be pasted Name of copied file/directory Paste under a separate name Execute the paste Index 7-65 IM AQ6376-01EN...
  • Page 300 Press the DONE soft key. The directory name is confirmed, and the screen returns to the previous stage. Press the EXECUTE soft key. A new directory is created. Press the CANCEL soft key to cancel creation of the directory. 7-66 IM AQ6376-01EN...
  • Page 301 The maximum file name length is 56 characters (including the extension). The following characters can be used in file names. !#$%&’()- 0123456789@ ABCDEFGHIJKLMNOPQRSTUVWXYZ^ abcdefghijklmnopqrstuvwxyz{}¯ File Sort You can sort the file list in ascending order by file name, file type, file date, or label. Index 7-67 IM AQ6376-01EN...

  • Page 302: Registering Soft Keys

    • Like the soft keys of other function keys, registered soft keys execute actions based on the registered contents. Explanation Any soft key can be registered as one of up to 24 user keys. Frequently used functions can be registered to a user soft key for easy access in the Index USER menu. IM AQ6376-01EN...

  • Page 303: Data Initialization

    Use this to return the settings of the instrument to the already-known states. • PARAM&DATA CLEAR Parameter setting values as well as data including MEMORY and PROGRAM are initialized. • CAL DATA CLEAR Alignment adjustment values and wavelength calibration values are initialized. • ALL CLEAR Current parameter setting values and data as well as alignment adjustment values and wavelength calibration values are initialized. IM AQ6376-01EN...
  • Page 304 START WL****.***nm 1500.000 3400.000 550.000 START FREQ***.****THz 88.0000 200.0000 32.0000 START WNUM ****.***cm 2941.000 6667.000 1078.000 STOP WL****.***nm 3400.000 4350.000 1500.000 STOP FREQ***.****THz 200.0000 256.0000 88.0000 STOP WNUM ****.***cm 6667.000 8530.000 2941.000 0nm SWEEP TIME**s MINIMUM MINIMUM Index IM AQ6376-01EN...
  • Page 305 SAMPLING INTERVAL *.****nm SPAN/100 0.001 calculated value, OFF MEAS WL AIR/VACUUM SWEEP SPEED 1x/2x PLS LIGHT MEASURE EDGE RISE/FALL RISE DELAY ****.*µs 1000.0 TRIGGER SETTING TRIG INPUT MODE****** SMPL TRG TRIG OUTPUT MODE****** HORZN SCALE nm/THz SMOOTHING OFF/ON IM AQ6376-01EN...
  • Page 306 ZOOM STOP FREQ ***.****THz of the trace that was 315.0000 88.0050 measured or read last Measurement stop ZOOM STOP WNUM ****.***cm wavenumber of the trace that 10433.000 2941.050 was measured or read last OVERVIEW DISPLAY OFF/L/R OVERVIEW SIZE LARGE/SMALL LARGE Index IM AQ6376-01EN...
  • Page 307 TRACE E UP/LOW SPLIT TRACE F UP/LOW DISPLAY TRACE G UP/LOW UPPER HOLD OFF/ON HOLD LOWER HOLD OFF/ON // AQ6376 OPTICAL LABEL SPCTRUM ANALYZER // NOISE MASK ***dB OFF(-999) MASK LINE VERT / HRZN HRZN TRACE Function Initial Value Maximum Value...
  • Page 308 0.01 1.00 10.00 1.00 THRESH LEVEL *.**dB 20.00 50.00 0.01 Index 2.00 10.00 1.00 THRESH LEVEL *.**dB 20.00 50.00 0.01 PEAK RMS 2.00 10.00 1.00 THRESH LEVEL *.**dB 3.00 50.00 0.01 NOTCH 1.00 10.00 1.00 TYPE PAEK/BOTTOM BOTTOM IM AQ6376-01EN...
  • Page 309 MODE FIT OFF/ON MODE DIFF *.**dB 3.00 50.00 0.01 OFFSET LEVEL *.**dB 0.00 10.00 -10.00 ALGO PK-RMS ENVELOPE/THRESH/RMS/PK-RMS THRESH **.**dB 20.00 50.00 0.01 THRESH2 **.**dB 20.00 50.00 0.01 2.00 10.00 1.00 MODE FIT OFF/ON MODE DIFF *.**dB 3.00 50.00 0.01 IM AQ6376-01EN...
  • Page 310 FITTING ALGO LINEAR/GAUSS/LORENZ/ LINEAR 3RD POLY/4TH POLY/5TH POLY NOISE BW *.**nm 0.10 1.00 0.01 DUAL TRACE OFF/ON DISPLAY TYPE ABSOLUTE/RELATIVE/ ABSOLUTE DRIFT(MEAS)/DRIFT(GRID) CH RELATION OFFSET OFFSET/SPACING REF CH HIGHEST 1024 HIGHEST/****CH OUTPUT SLOPE OFF/ON Index POINT DISPLAY OFF/ON IM AQ6376-01EN...
  • Page 311 0.001 SW OFF/ON ALGO THRESH THRESH/PK LEVEL/GRID THRESH LEVEL *.**dB 3.00 50.00 0.01 1.00 10.00 1.00 MODE FIT OFF/ON MODE DIFF *.**dB 3.00 50.00 0.01 CH SPACE ±*.**nm 0.40 50.00 0.00 SEARCH AREA ±*.**nm 0.01 10.00 0.01 8-10 IM AQ6376-01EN...
  • Page 312 -10.000 30.000 -90.000 SW OFF/ON THRESH LEVEL *.*dB 50.0 TEST BAND *.**nm 0.20 99.99 0.01 SW OFF/ON TEST BAND *.**nm 0.20 99.99 0.01 SW OFF/ON Index SPACING *.**nm 0.80 99.99 0.01 TEST BAND *.**nm 0.20 99.99 0.01 8-11 IM AQ6376-01EN...
  • Page 313 99.99 0.01 TEST BAND *.**nm 0.20 99.99 0.01 SPEC WIDTH THRESH *.**dB 3.00 50.00 0.01 TRACE&TABLE/TABLE/TRACE/GRAPH&TABLE/GRAPH TRACE&TABLE LINE MRKER Y1 OFF/ON GRAPH&TABLE/ GRAPH LINE MRKER Y2 OFF/ON AUTO ANALYSIS OFF/ON SEARCH/ANA L1-L2 OFF/ON SEARCH/ANA ZOOM AREA OFF/ON 8-12 IM AQ6376-01EN...
  • Page 314 TRACE DATA SAVE OFF/ON FILE SORT @@@@ FILE NAME DRIVE INT/EXT FILE → TRACE @ TRACE MEMORY CURSOR UP/DOWN DOWN FILE SORT @@@@@@@@@@ FILE NAME Index ITEM SELECT @@@@@ TRACE DRIVE INT/EXT COPY DRIVE INT/EXT FILE SORT @@@@@@@@@@ FILE NAME 8-13 IM AQ6376-01EN...
  • Page 315 14 (Program number) EXECUTE15 ** 15 (Program number) EXECUTE16 ** 16 (Program number) EXECUTE17 ** 17 (Program number) EXECUTE18 ** 18 (Program number) EXECUTE19 ** 19 (Program number) EXECUTE20 ** 20 (Program number) EXECUTE21 ** 21 (Program number) 8-14 IM AQ6376-01EN...
  • Page 316 1 INTERVAL parameter value (the same as that for 1sec when SWEEP TIME is used) 2 99.23:59:59 (when the INTERVAL parameter is set to SWEEP TIME) Maximum measurement count × minimum interval (when the INTERVAL parameter is not set to SWEEP TIME) Index 8-15 IM AQ6376-01EN...
  • Page 317 TRIG INPUT MODE SMPL TRIG TRIG OUTPUT MODE AUTO OFFSET OFF/ON AUTO OFFSET SETTING INITERVAL *** min UNCAL WARNING DISPLAY OFF/ON CLICK OFF/ON WARNING OFF/ON LEVEL DISP DIGIT * WINDOW TRANSPARENT OFF/ON YR-MO-DY MO-DY-YR DY-MO-YR SELECT COLOR @@@@ COLOR1 8-16 IM AQ6376-01EN...

  • Page 318: Help

    Select the soft key of the help text to display, then press the SELECT soft key. The help information is displayed. To quit, press the QUIT HELP soft key. Menu after pressing HELP Selection of soft keys for displaying help Displays the selected help text Index 8-17 IM AQ6376-01EN...

  • Page 319: Registering And Loading Character Strings

    Select the registration number of the string to delete using the UP and DOWN arrow keys. Press the CLEAR soft key. The character string is registered to the specified number. Character string selection List of registered character strings 8-18 IM AQ6376-01EN...

  • Page 320: Locking Keys

    • While the keys are locked, only the following panel keys can be used. USER, LOCAL (release remote mode), HELP, COPY, POWER switch • If you forget the password, initialize the data (ALL CLEAR). For the procedure, see section 8.2, “Data Initialization.” • The power switch is enabled even while the keys are locked. If you turn off the AQ6376 in the lock mode, the AQ6376 will start in lock mode when the power is turned back on. Index 8-19 IM AQ6376-01EN...
  • Page 321 Even when the keys are locked, you can still use the AQ6376 remote commands and program commands as usual. However, if the AQ6376 is in remote mode as a result of receiving REN (Remote Enable) or a listen address with ATN set to True from the controller, the key lock cannot be released.

  • Page 322: Other Settings

    Press the MORE 1/4 soft key three times to display the MORE 4/4 screen. Press the TEST MODE soft key. The password entry screen is displayed. To cancel this screen press another soft key or panel key. Index 8-21 IM AQ6376-01EN...
  • Page 323 ON and OFF. When this is set to ON, the remote monitor is enabled. Sharing Directories The user area directory of the AQ6376 internal memory can be shared on a PC. Press SYSTEM. Press the MORE soft key repeatedly until the MORE 2/4 menu is displayed.
  • Page 324 When this is set to ON, the firewall is enabled. Clearing Measured Data, Analysis Conditions, Parameters, Etc. The PRESET key clears all internal settings of the AQ6376 except for the remote interface (ETHERNET, GP-IB, and RS232) settings. Press PRESET. A confirmation message for clearing the message and YES and NO soft keys appear.
  • Page 325 This soft key can only be used when the instrument is connected to a PC. Sharing Directories The user area directory of the AQ6376 internal memory can be shared on a PC. When the user area directory is shared, the files in the directory can be copied to the PC over the network.
  • Page 326 Clearing Measured Data, Analysis Conditions, Parameters, Etc. This function clears all measurement parameters, display parameters, analysis parameters, and the waveform display. It is the same operation as when the AQ6376 receives an *RST remote command. The following data is not cleared.

  • Page 327: Displaying System Information

    SPECIAL CODE (not always displayed) Special Code SERIAL NO. Serial No. MAC ADDRESS MAC address of the Ethernet port DHCP ENABLED IP ADDRESS TCP/IP settings SUBNET MASK DEFAULT GATEWAY CPU FAN SPEED CPU fan rotation speed (RPM) 8-26 IM AQ6376-01EN...
  • Page 328 Press the CLEAR soft key , followed by the YES soft key The system log is cleared. Index Copying the system log to USB memory After connecting the USB memory, press the SAVE TO USB MEMORY soft key. The USB system log is copied to USB memory. 8-27 IM AQ6376-01EN...

  • Page 329: Updating The Firmware

    Create a directory named “UPDATE” in the USB memory device, and save the update firmware (.upd extension) in that directory. Check that the AQ6376 is not connected to a network. If it is, you will not be able to update.
  • Page 330 Press the YES(REBOOT) soft key. The AQ6376 automatically restarts and starts updating. A update-in-progress screen appears while the firmware is being updated. When updating is complete, the AQ6376 automatically shuts down. This completes the update procedure. Turn the power on, and the AQ6376 will start normally.
  • Page 331 Press the UPDATE(NETWORK) soft key. The “Insert Update Files (NETWORK)” message appears. Connect the PC containing the update firmware to the AQ6376 over a network. Use a file management software on the PC to copy the update software (.upd extension) to the UPDATE directory of the AQ6376 internal memory.

  • Page 332: Mechanical Inspection

    MAIN POWER sur OFF sur le panneau arrière, puis débrancher le cordon d'alimentation. ATTENTION • Si des corps étrangers se retrouvent emprisonnés dans les différents connecteurs, un dysfonctionnement ou un endommagement risque de se produire. • Si l'ajustement de l'un des différents types de connecteurs n'est pas parfait, l'instrument risque de ne pas fonctionner normalement. • En cas d'anomalie, contacter le représentant Yokogawa le plus proche. Check the following: • That the instrument’s exterior is not damaged or deformed. • That all switches, connectors, and other assembled parts are not loose. • That switches can be operated smoothly. IM AQ6376-01EN...

  • Page 333: Operational Inspection

    Operational Inspection Checking the Operations of Each Switch With the power to the instrument turned ON, operate each switch once briefly to check that the unit functions properly. Index IM AQ6376-01EN...

  • Page 334: Inspection Of Wavelength Accuracy

    For the calibration procedure, see section 2.2, “Wavelength Calibration.” For performing wavelength calibration, check wavelength accuracy again according to procedure. Note If the wavelength error of the instrument is outside of [+/-] 20 nm, you cannot perform wavelength calibration with the internal reference light source. In this case, readjustment is necessary. Please contact your nearest Yokogawa representative. IM AQ6376-01EN...

  • Page 335: Inspection Of Level Accuracy

    Check that peak level values obtained in step 7 agree with the ones obtained by the optical power meter (within the specified level accuracy). For information on level accuracy, see chapter 10 of the Getting Started Guide, IM AQ6376-02EN. Note • Connect the light source with the unit via the 9.5/125 mm SM optical fiber. Then, turn on the...

  • Page 336: Replacing Fuses

    Replacing Fuses There is a fuse inside the instrument. However, you should not replace the fuse yourself. It could indicate additional internal damage. If you believe the fuse is blown, please contact your nearest YOKOGAWA dealer. IM AQ6376-01EN...

  • Page 337: Daily Maintenance

    Grasp it as close to the cleaner support (base) as possible. Insert the cleaner straight into the optical connector connection section and rotate it. Index Optical output Connector adapter Optical connector Cleaner (stick type) Support (base) Instrument panel IM AQ6376-01EN...
  • Page 338 Remove the connector adapter from the unit. For removal, see chapter 6 of the Getting Started Guide, IM AQ6376-02EN. Use a swab dipped into a small quantity of undiluted alcohol to clean the ferrule end of the optical output section.

  • Page 339: Care During Storage

    For extended storage, it is recommended that the instrument be stored within the range of the following environmental conditions while, at the same time, the above conditions are met. • Temperature 5–30[DEGC] • Humidity 40-70% • Daily fluctuations of temperature/humidity are small. Index 9-11 IM AQ6376-01EN...

  • Page 340: Recommended Replacement Parts

    Recommended Replacement Parts The following parts are wearable. It is recommended to replace them after the time period indicated below. For replacement of parts, please contact your nearest Yokogawa representative. Part Name Replacement Period Cooling fan 3 years Backup battery (lithium)

  • Page 341: Warning Display Function

    Although the AUTO sweep started, the sweep stopped because optimum conditions were not found. No data between line markers An attempt was made to execute the analysis function in a state where there was no data in the line markers of an active trace. 9-13 IM AQ6376-01EN...
  • Page 342 It was not possible to execute printing because the head-up lever of the internal printer was raised. Printer Head Temperature error The temperature of the built-in printer’s printer head is abnormal when printing. Illegal character An illegal character was entered for a network name. 9-14 IM AQ6376-01EN...
  • Page 343 Entered emulation mode because an abnormality with the operation of the monochromator occurred. Index Monochromator error! Entered emulation mode because an abnormality with the operation of the monochromator occurred. Monochromator error! Entered emulation mode because an abnormality with the operation of the monochromator occurred. 9-15 IM AQ6376-01EN...
  • Page 344 A file cannot be saved due to an incorrect file name. Undefined program An attempt was made to run a program that is not defined. Syntax error Command incorrect (a program has been rewritten for some reason). 9-16 IM AQ6376-01EN...

  • Page 345: Appendix

    Appendix 1 GRID Table for WDM Wevelength Some analytical functions refer to the GRID table for analysis(See the following table.) The AQ6376 contains the nominal center frequencies specified by the ITU-T (International Telecommunication Union-Telecommunication sector) G692 as the GRID table. It also contains two tables: the standard GRID table created according to the pre-defined wavelength (frequency) range and the custom GRID table that users can edit freely.

  • Page 346: Appendix 2 Data Calculation Algorithms For Spectrum Widths

    Appendix 2 Data Calculation Algorithms for Spectrum Widths The AQ6376 can calculate spectrum widths of waveforms being displayed. This section provides four types of spectrum width calculation methods as well as algorithms for the NOTCH width calculation. THRESH Method This method is used to obtain the spectrum widths of two points, which are lower than the peak level by a threshold value (THRESH [dB]) specified by a parameter, as well as their center wavelengths.
  • Page 347 C = ( )/2 (when “MODE FIT” is ON) λ λ λ C = ( )/2 (when “MODE FIT” is OFF) λ MODE displayed in the data area shall be the number of mode peaks between λ Index App-3 IM AQ6376-01EN...
  • Page 348 , to obtain new λ λ λ 'C = ( - λ'C) + λ'C λ λ = K × ( - λ'C) + λ'C λ λ = K × ( • Obtain the spectrum width from the following equation. Δλ λ λ • Obtain the center wavelength λC from the following equation. λ λ λ C = ( App-4 IM AQ6376-01EN...
  • Page 349 = K × ( 'C) + λ λ λ λ = K × ( 'C) + • Obtain the spectrum width from the following equation. Δ λ λ λ • Obtain the center wavelength λ C from the following equation λ λ λ C = ( Index App-5 IM AQ6376-01EN...
  • Page 350 λ = K × ( 'C) + λ λ λ λ = K × ( 'C) + • Obtain the spectrum width from the following equation. Δ λ λ λ • Obtain the center wavelength λ C from the following equation. λ λ λ C = ( App-6 IM AQ6376-01EN...
  • Page 351 ∑ Pi x λ λc = ∑ • By using the mean wavelength λ Δλ c, find the spectrum width by the following expression. ∑ Pi x (λ λ Δλ = ∑ Index App-7 IM AQ6376-01EN...
  • Page 352 ∑ Pi x λ λc = ∑ • By using the mean wavelength λ c obtained in above discription, find the spectrum Δλ width by the following expression. ∑ Pi x (λ λ Δλ = ∑ App-8 IM AQ6376-01EN...
  • Page 353 A = K × ( 'C) + λ λ λ λ B = K × ( 'C) + • Obtain the NOTCH width from the following equation. Δλ λ λ • Obtain the center wavelength λ C from the following equation. λ λ λ C = ( B)/2 Index App-9 IM AQ6376-01EN...
  • Page 354 A = K × ( 'C) + λ λ λ λ B = K × ( 'C) + • Obtain the NOTCH width from the following equatio. Δλ λ λ • Obtain the center wavelength λ C from the following equation. λ λ λ C = ( B)/2 App-10 IM AQ6376-01EN...

  • Page 355: Appendix 3 Details Of Each Analytical Functions

    Index wavelength value to B. Also, set the levels (linear values) for each point of A and to LA and LB. • Obtain SMSR and Δλ from the following equations. SMSR = LA / LB Δ λ λ λ App-11 IM AQ6376-01EN...
  • Page 356 2. The main mode point is set to PA. The wavelength of this point is set to λA. 3. The wavelength of the side mode that has a wavelength shorter than PA is set to λB. The wavelength of the side mode that has a wavelength longer than PA is set to λC. If relevant points do not exist, for the levels outside the mask area, the wavelength at the highest level whose wavelength is shorter than PA is set to λB and the wavelength at the highest level whose wavelength is longer than PA is set to λC. 4. The levels (linear values) of λA, λB, and λC are set to LA, LB, and LC, respectively. 5. The SMSR and Δλ are obtained from the following equations. SMSR(L) = LA / LB SMSR(R) = LA / LC Δλ(L) = λB − λA Δλ(R) = λC − λA App-12 IM AQ6376-01EN...
  • Page 357 The analysis algorithm for the SMSR4 mode is as follows: 1. A mode search is performed to obtain the mode peaks. 2. The main mode point is set to PA. The wavelength of this point is set to λA. 3. The wavelength of the side mode that has a wavelength shorter than PA is set to λB. The wavelength of the side mode that has a wavelength longer than PA is set to λC. If there is no mode peak whose wavelength is shorter than PA, λB is set to λA. If there is no mode peak whose wavelength is longer than PA, λC is set to λA. 4. The levels (linear values) of λA, λB, and λC are set to LA, LB, and LC, respectively. 5. The SMSR and Δλ are obtained from the following equations. SMSR(L) = LA / LB SMSR(R) = LA / LC Δλ(L) = λB − λA Δλ(R) = λC − λA Index App-13 IM AQ6376-01EN...
  • Page 358 Ri = ( i x Rfi)/C λ Wavelength (nm) at each point Rfi : Actual resolution(THz) Speed of light in the vacuum(2.99792458 x 10 [m/s]) • Set the actual resolution for the ith point to Ri, while setting the level to Li. • Obtain the total power in the equation below. SPAN ∑ x POWEROFFSET POWER = SAMPLE - 1 App-14 IM AQ6376-01EN...
  • Page 359 Threshold Value • Perform a mode search to obtain mode peaks. • Of these mode peaks, set the ones whose level (LOG) is equal to or greater than the line that is below the peak level by the lower limit (THRESH), to the valid mode peaks. • Set the frequency of the leftmost valid mode peak to F1(THz). • Set the frequency of the rightmost valid mode peak to F2(THz). • Set the number of mode peaks between F1 and F2 to N. • Obtain the PMD value from the following equation. PMD = (N-1) / (F2-F1) Index App-15 IM AQ6376-01EN...
  • Page 360 ALGO POLY/4TH POLY/5TH POLY NOISE BW 0.10 0.01 to 1.00 SIGNAL PEAK PEAK/INTEGRAL POWER INTEGRAL 10 to 999 RANGE Concerning the algorithms for DFB-LD analysis, refer to data calculation algorithms for spectrum widths and SMSR analysis algorithms. App-16 IM AQ6376-01EN...
  • Page 361 1.00 to 10.00 MODE FIT ON / OFF Valid only when ALGO is THRESH. MODE DIFF 3.00 0.01 to 50.00 Concerning the algorithms for FP-LD analysis, refer to data calculation algorithms for spectrum widths and power analysis algorithms. Index App-17 IM AQ6376-01EN...
  • Page 362 ON / OFF Valid only when ALGO is THRESH. MODE DIFF 0.01 to 50.00 TOTAL OFFSET -10.00 to 10.00 POWER LEVEL Concerning the algorithms for LED analysis, refer to data calculation algorithms for spectrum widths and power analysis algorithms. App-18 IM AQ6376-01EN...
  • Page 363 Threshold value for channel detection. Minimum value for peak/bottom MODE DIFF 0.0 to 50.0 difference during channel detection. OFF, Levels equal to or below this level are not DISPLAY MASK -100.0 to 0.0 detected as WDM channels. Index App-19 IM AQ6376-01EN...

  • Page 364: Appendix 4 Detailed Explanations Of Wdm Analysis Function

    0.10nm 0.01 to 1.00nm nm Setting of noise bandwidth. OFF: Active trace is handled as the target for analysis. DUAL TRACE ON/OFF Wavelengths and levels are calculated from TRACE A. Noise levels are calculated from TRACE B. App-20 IM AQ6376-01EN...
  • Page 365 ON/OFF of the function to obtain the least square ON/OFF SLOPE approximation line of the channel peak. POINT ON/OFF of the function to display the data range used ON/OFF DISPLAY for fitting into the waveform window. Index App-21 IM AQ6376-01EN...
  • Page 366 Lni. 8. Using the signal level LSi and noise level LNi obtained in 4 and 7, determine the level Li of each channel using the following equation. Li = LSi(linear) ? LNi(linear) App-22 IM AQ6376-01EN...
  • Page 367 Internally obtain the measurement resolution of SNi calculation trace and the value of the noise measurement point NOISE AREA in accordance with the resolution, and then obtain the values from the following equations. λ NA_Ri = i + NOISE AREA λ NA_Li = i - NOISE AREA App-23 IM AQ6376-01EN...
  • Page 368 λ NA_Li = i - ( Ni - λ NA_Ri = i=2,3,…,n-1 λ NA_Li = N(i - 1) λ NA_Ri = λ NA_Li = N(i - 1) λ λ λ NA_Ri = i + ( N(i -1)) App-24 IM AQ6376-01EN...
  • Page 369 The parameter “OUTPUT SLOPE” provides a function to obtain the least square approximation curve of channel peaks. This function makes it possible to measure gain tilts. If “OUTPUT SLOPE” is set to ON, results will be displayed in the waveform display section and in the analysis table. Index App-25 IM AQ6376-01EN...
  • Page 370 REF CHANNEL*** shall be the reference. The wavelength difference and level difference (LOG) against it shall be OFFSET WL and OFFSET LVL of each WDM mode peak. (If the ***th mode peak does not exist, the WDM mode peak on the longest wavelength shall be the reference.) App-26 IM AQ6376-01EN...
  • Page 371 MEAS WL: Center wavelength of the channel REL WL: Relative wavelength to the GRID wavelengths of the channel MEAS LVL: Level of the channel (peak level – noise level) NOISE: Noise level of the channel SNR: SNR value of the channel Index App-27 IM AQ6376-01EN...
  • Page 372 DIFF MIN (level): Minimum value of the relative level to the reference level of the channel Reference wavelength/level can be changed under the following conditions. • Active trace waveform data when MAX/MIN RESET is set by the parameter. • The first waveform data measured when wavelength axes (SPAN WL/START WL/ STOP WL) were changed according to the measurement conditions. App-28 IM AQ6376-01EN...
  • Page 373 Minimum value of the relative level to the reference level of the channel • Absolute values and reference values to the GRID table are displayed. The GRID table can be freely configured. • Reference wavelengths/levels can be changed under the following conditions: • When MAX/MIN RESET is set by the parameter, reset is performed by the active trace waveform data. • Reset is performed by the first waveform data that was measured when wavelength axes (SPAN WL/START WL/STOP WL) were changed by measurement conditions. Index App-29 IM AQ6376-01EN...
  • Page 374 Shot Noise component is included in computation of the NF value. SHOT NOISE ON / OFF ON: Shot Noise component included in computation of the NF value. OFF: Shot Noise component not included in computation of the NF value. App-30 IM AQ6376-01EN...

  • Page 375: Appendix 5 Details Of Optical Amplifier Analysis Function

    (SHOT NOISE parameter:OFF) NFi = h x c λ i): Refraction index of the air C: Speed of light in the vacuum 2.99792458×10 [m/s] h: Planck’s constant 6.6260755×10 - [J•s] Perform LOG conversion for Nfi, Gi, and LASEi. App-31 IM AQ6376-01EN...
  • Page 376 Appendix 5 Details of Optical Amplifier Analysis Function Automatic Parameter Setting Function The AQ6376 provides a fit area/mask area automatic setting function. AUTO-FIX ASE algorithm The fitting algorithm is LINEAR. Since the algorithm is LINEAR, the mask area setting will not be required.

  • Page 377: Appendix 6 Details Of Optical Filter Analysis Function

    AQ6317 series. Items for analysis PEAK LVL: Peak level PEAK WL: Peak wavelength CENTER WL: Center wavelength SPECTRUM WIDTH: Wavelength width at threshold value TH RIPPLE WIDTH: Ripple width CROSS TALK: Cross talk Index App-33 IM AQ6376-01EN...
  • Page 378 0.0 to 50.0 Valid only when ALGO is THRESH. GRID : - CH SPACE 0.00 to 50.00 Setting of channel spacing Setting of the analysis range. SEARCH 0.01 0.01 to 10.00 AREA Valid only when ALGO is GRID. App-34 IM AQ6376-01EN...
  • Page 379 Perform a spectrum width search. Set the value of the peak level – bottom level within the obtained spectrum width to the ripple width. Note • Unless the parameter “MODE DIFF” is set to a value smaller than uneven portions of a waveform regarded as a ripple, RIPPLE = 0 will result. • RIPPLE = 0 if the parameter setting is “THRESH” < “MODE DIFF” Index App-35 IM AQ6376-01EN...
  • Page 380 MODE DIFF 00 to 50.0 Valid only when ALGO is THRESH. CH SPACE 0.0 to 50.00 Setting of channel spacing. Setting of the range of analysis. SEARCH 0.01 0.01 to 10.00 AREA Valid only when ALGO is GRID. App-36 IM AQ6376-01EN...
  • Page 381 Set the difference between the peak level within the range λ of the reference wavelength ± SEARCH AREA[nm] and the bottom level within λ the range of the position ± CH SPACE[nm] away from the reference wavelength λ ± SEARCH AREA[nm] to the cross talk. Index App-37 IM AQ6376-01EN...
  • Page 382 XdB pass-band THRESH 0.1 to 50.0 TEST BAND 0.20 0.01 to 99.99 ON / OFF Ripple TEST BAND 0.20 0.01 to 99.99 ON / OFF Cross Talk SPACING 0.80 0.01 to 99.99 TEST BAND 0.20 0.01 to 99.99 App-38 IM AQ6376-01EN...
  • Page 383 • Reference wavelength: GRID wavelength of each channel. • Peak wavelength/level: Peak wavelength and peak level within the range of GRID wavelength ± (TEST BAND/2) of each channel. Index App-39 IM AQ6376-01EN...
  • Page 384 Obtain the width (xdB_Width), which is below the peak level LPi of each channel by the parameter THRESH_LEVEL both on the left and on the right, and its center wavelength. The algorithm for analysis is the same as the algorithm THRESH of the spectrum width. App-40 IM AQ6376-01EN...
  • Page 385 Port B xdB Passband λi Wavelength nominal wavelength Parameter THRESH TEST BAND Procedure • Perform the bottom search within the range of parameter Test_Band/2 by centering on λ reference wavelength i of each channel and obtain the bottom level (LBi). Index • Obtain the width (xdB_pass-band) that is below the bottom level LBi obtained in the above procedure by the parameter THRESH _LEVEL. App-41 IM AQ6376-01EN...
  • Page 386 TEST BAND Procedure • Perform the peak search and bottom search within the range of parameter Test_ λ Band/2 by centering on the reference wavelength i of each channel, and obtain the peak level (LP’i) and the bottom level (LB’i). • Use the peak level (LP’i) and bottom level (LB’i) obtained in the above procedure to obtain the ripple from the following equation: Ripple = LP’i − LB’i App-42 IM AQ6376-01EN...
  • Page 387 SP) that is obtained by adding the parameter SPACING to the reference λ wavelength i of each channel. Then, obtain the peak level (LPRi). • Use the values obtained in the above procedure to obtain the left and right cross talks (XTLi, XTRi) of each channel from the following equations: XTLi = Lbi − LPLi XTRi = Lbi − LPRi Index App-43 IM AQ6376-01EN...
  • Page 388 XdB Elimination ban THRESH 0.1 to 50.0 TEST BAND 0.20 0.01 to 99.99 ON / OFF Ripple TEST BAND 0.20 0.01 to 99.99 ON / OFF Cross Talk SPACING 0.80 0.01 to 99.99 TEST BAND 0.20 0.01 to 99.99 App-44 IM AQ6376-01EN...
  • Page 389 Index wavelengths within the range of analysis shall be the channels. Reference wavelength: GRID wavelength of each channel. Peak wavelength/level: Bottom wavelength and bottom level within the range of GRID wavelength ± (TEST BAND/2) of each channel. App-45 IM AQ6376-01EN...
  • Page 390 Obtain the width (xdB_Notch_Width) between the two points, which are below the higher point of either the left peak level or the right peak level of each channel by the parameter THRESH_LEVEL, and its center wavelength/frequency (Center_Wavelength). App-46 IM AQ6376-01EN...
  • Page 391 • Perform the peak search within the range of the parameter Test_Band/2 by centering λ on the nominal wavelength i of a channel and obtain the peak level (LPi). • Obtain the width (xdB_Elimination_Wavelength) that is above the peak level LPi Index obtained in the above procedure by the parameter THRESH_LEVEL both on the left and on the right. App-47 IM AQ6376-01EN...
  • Page 392 TEST BAND Procedure • Perform the peak search and bottom search within the range of parameter Test_ λ Band/2 by centering on reference wavelength i of each channel, and obtain the peak level (LP’i) and the bottom level (LB’i). • Use the peak level (LP’i)and bottom level (LB’i) obtained in the above procedure to obtain the ripple (Ripple) from the following equation: Ripple = LP’i − LB’i App-48 IM AQ6376-01EN...
  • Page 393 SP) that is obtained by subtracting the parameter SPACING from the λ reference wavelength i of each channel. Then, obtain the bottom level (LPRi). • Use the values obtained in the above procedures to obtain the left and right cross talks (XTLi, XTRi) of each channel from the following equations: XTLi = LP’’i − LPLi XTRi = LP’’i − LPRi Index App-49 IM AQ6376-01EN...
  • Page 394 Setting the sweep width as six times the RMS 20 dB width of the active trace measurement waveform (1.2,4.6) 0 nm sweep screen range measurement time setting (6.11) Setting the current waveform display scale as the measurement scale for the next sweep (1.2, 4.5) App-50 IM AQ6376-01EN...
  • Page 395 Setting subscale to dB/km (4.3) Setting subscale to % (4.3) Linear subscale bottom setting or offset level settting for LOG (4.3) Optical fiber length setting (4.3) Automatic scaling of subscale (4.3) Position settings in the reference level subscale (4.3) Index App-51 IM AQ6376-01EN...
  • Page 396 External trigger mode setting (4.15) Trigger condition settings (4.15) 10-1 Edge setting (4.15) 10-2 Delay setting (1.2, 4.15) 10-3 Trigger input mode setting (4.16) 10-4 Trigger output mode setting (4.17) Horizontal axis units setting (4.2) Smoothing (4.18) App-52 IM AQ6376-01EN...
  • Page 397 Display scale initialization (5.1) DISPLAY Normal display (5.10) Split display (5.10) Display position setting Display position fixing Label setting (3.3) Noise mask setting (1.3, 5.11) Mask method setting (5.11) Trace clearing (5.12) Turning the display OFF (8.6) Index App-53 IM AQ6376-01EN...

  • Page 398: Appendix 7 Soft Key Tree Diagram

    Power spectral density display (trace F only) (5.5, 5.8) Trace normalization (trace G only) (5.5, 5.6) Trace curve fitting (trace G only) (5.5, 5.7) Trace peak curve fitting (trace G only) (5.5, 5.7) Trace conditions list display (5.12) App-54 IM AQ6376-01EN...
  • Page 399 Appendix 7 Soft Key Tree Diagram TRACE(MORE 2/2) Copy trace (5.12) Copy source trace setting (5.12) Copy target trace setting (5.12) Execute copy (5.12) Trace clearing (5.12) Index App-55 IM AQ6376-01EN...
  • Page 400 L1 and L2 (5.13, 6.13) (For both the PEAK SEARCH and ANALYSIS menus) Setting the peak search, bottom search, and analysis function ranges to within the zoom range (5.13, 6.13) (For both the PEAK SEARCH and ANALYSIS menus) App-56 IM AQ6376-01EN...
  • Page 401 Setting the peak search, bottom search, and analysis function ranges to within the zoom range (5.13, 6.12) (For both the MARKER and ANALYSIS menus) Switching between the single and multi peak/bottom searches (5.13, 5.14) Setting the threshold and sort order of the multi search (5.14) Index App-57 IM AQ6376-01EN...
  • Page 402 L1 and L2 (5.13, 6.13) (For both the MARKER and PEAK SEARCH menus) Setting the peak search, bottom search, and analysis function ranges to within the zoom range (5.13, 6.13) (For both the MARKER and PEAK SEARCH menus) App-58 IM AQ6376-01EN...
  • Page 403 Appendix 7 Soft Key Tree Diagram MEMORY Temporarily saving a trace (7.2) Loading temporarily saved trace (7.2) Clearing temporarily saved traces (7.2) Displaying temporarily saved traces in a list (7.2) Changing list display contents (7.2) Index App-59 IM AQ6376-01EN...
  • Page 404 Setting the target storage device (7.11) Deleting a file (7.11) Copying a file (7.11) 6-3-1 Setting the paste destination (7.11) 6-3-2 File name when saving to separate name (7.11) Renaming (7.11) Creating a directory (7.11) Sorting a file (7.11) File selection (7.11) App-60 IM AQ6376-01EN...
  • Page 405 Switching the cursor target window (7.3) (setting the source/destination memory number) Setting the data format (7.3) Switching the MEMORY list display contents (7.3) Setting the MEMORY data loading source (7.3) Switching the cursor target window (7.3) (setting the source/destination load file) Index App-61 IM AQ6376-01EN...
  • Page 406 Setting the save destination for program data (7.7) Entering a file name (7.7) Switching the cursor target window (7.7) (setting the source/destination program number) Setting the loading source for program data (7.7) Switching the cursor target window (7.7) (setting the source/destination load file) App-62 IM AQ6376-01EN...
  • Page 407 Setting the loading destination for template data (6.12, 7.9) LOGGING Sets the logging data save destination (7.10) Sets the file name (7.10) Sets the logging data to save (7.10) Sets the logging data load source (7.10) Index App-63 IM AQ6376-01EN...
  • Page 408 Pasting (inserting) 2-2-6-2 Pasting (overwriting) 2-2-7 Printing program lists Copying programs 2-3-1 Overwriting 2-3-2 Copying and adding contents (merge) Deleting programs OUTPUT WINDOW display OUTPUT WINDOW print out Closing the OUTPUT WINDOW Executing programs registered to soft keys App-64 IM AQ6376-01EN...
  • Page 409 Index 2-4-8 Sets the reference value for displaying relative values of the table data (6.15) Deletes logging data (6.15) Displays waveform data while data logging is in progress (6.15) Saves logging data (6.15) Loads logging data (6.15) App-65 IM AQ6376-01EN...
  • Page 410 Setting the frequency Spacing (6.10) 5-2-4 Setting channel point wavelength (6.10) 5-2-5 Inserting channel points (6.10) 5-2-6 Deleting channel points (6.10) 5-2-7 Finalizing input values (6.10) Setting the grid table reference wavelength (6.10) Registering user keys (8.1) App-66 IM AQ6376-01EN...

  • Page 411: Gp-Ib Interface

    Appendix 7 Soft Key Tree Diagram SYSTEM(MORE 2/4) Communication interface settings (see IM AQ6376-17EN) GP-IB interface settings (see IM AQ6376-17EN) Setting the GP-IB port address Command format setting RS-232 interface settings (see IM AQ6376-17EN) Ethernet interface settings (see IM AQ6376-17EN) Setting the trigger input mode (4.16)
  • Page 412 Displaying, clearing, and saving the system log to USB memory (8.7) Initializing settings (8.2) Displaying the software version and upgrading (9.1) 10-1 Displaying the patch list (9.1) 10-2 Upgrading the software (9.1) Service menu (8.6) System shutdown (See IMAQ6376-02EN) App-68 IM AQ6376-01EN...

  • Page 413: Appendix 8 End User License Agreement

    Appendix 8 END USER LICENSE AGREEMENT • You have acquired a device (“DEVICE”) that includes software licensed by YOKOGAWA TEST & MEASUREMENT CORPORATION from Microsoft Licensing Inc. or its affiliates (“MS”). Those installed software products of MS origin, as well as associated media, printed materials, and “online” or electronic documentation (“SOFTWARE”) are protected by international intellectual property laws and treaties.
  • Page 414 Restricted Functionality. You are licensed to use the SOFTWARE to provide only the limited functionality (specific tasks or processes) for which the DEVICE has been designed and marketed by YOKOGAWA TEST & MEASUREMENT CORPORATION. This license specifically prohibits any other use of the software programs or functions, or inclusion of additional software programs or functions, on the DEVICE.
  • Page 415 Index Index Symbol Page Page 0nm SWEEP TIME ............. 6-41 Data Initialization ..............1-14 Date ..................3-8 DELAY ................4-45 Page DFB-LD ................1-12 Absolute Level Accuracy ........... 2-13, 6-59 DFB-LD Analysis Function..........App-16 ABSOLUTE Templates ............6-51 DISPLAY ................. App-53 Active Trace ................
  • Page 416 Index Page Page Laser..................2-6 Peak Curve Fit ..............1-8 LED..................1-12 Peak Curve Fit Target Range ..........5-23 LED Analysis Function............ App-18 Peak Curve Fit Target Trace ..........5-23 LEVEL ................App-51 PEAK HOLD ............... 4-40 Level Accuracy ............2-3, 2-13 PEAK RMS Method ............
  • Page 417 Index Sub Scale REF Position ............4-7 Page SUMMARY TYPE ............... 6-69 ZOOM ..............1-7, App-53 SWEEP ................App-50 Zoom Center Wavelength ............. 5-6 Sweep Average ..............5-11 Zooming In/Out .............. 5-1, 5-3 Sweeping between Line Markers ........4-37 Zoom Start Wavelength ............5-6 SWEEP INTERVAL ............

Table of Contents