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Tektronix 1L10 Instruction Manual
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Tektronix 1L10 Instruction Manual

Tektronix 1L10 Instruction Manual

Spectrum analyzer
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I V I A I N I UAL
/ 3
/
3
Serial Number
f
type1L10
SPECTRUM
A N A L Y Z E R
Tektronix, Inc.
S.W. M illik a n W a y
•
P. O. Box 500
•
Beaverton, O re gon
•
Phone Ml 4-0161
•
Cables: T ektronix
0 7 0 -0 5 1 0 ,0 0
965

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Summary of Contents for Tektronix 1L10

  • Page 1 I V I A I N I UAL Serial Number type1L10 SPECTRUM A N A L Y Z E R Tektronix, Inc. S.W. M illik a n W a y • P. O. Box 500 • Beaverton, O re gon •...
  • Page 2 WARRANTY All Tektronix instruments are warranted against defective materials and workman­ ship for one year. Tektronix transformers, manufactured in our own plant, are war­ ranted for the life of the instrument. Any questions with respect to the w ar­ ranty mentioned above should be taken up with your Tektronix Field Engineer.
  • Page 3 CONTENTS Warranty Section 1 Characteristics Operating Information Section 2 Theory of Operation Section 3 Maintenance and Calibration Section 4 Parts List and Diagrams Section 5 A list of abbreviations and symbols used in this manual will be found on page 5-1. Change information, if any, is located at the rear of the manual.
  • Page 4 Type 1L10 Spectrum Analyzer Plug-In Unit Type 1 LI 0 ®...
  • Page 5 + 2 4 dbm with all R-F ATTEN switches The Type 1L10 Spectrum Analyzer plug-in unit is designed O N . fo r use with Tektronix Type 530-, 540-, 550-, and *580- Series Oscilloscopes. The Type 1L10 Spectrum Analyzer is Frequency Local Oscillator: tunable over the frequency range o f 1 me to 36 me.
  • Page 6 NOTES...
  • Page 7 SWEEP INPUT about a 26 db dynamic range with a six- connector of the Type 1L10, and connect a coaxial cable centimeter vertical display. The LIN X 1 0 between OSC OUT and OSC IN.
  • Page 8 Operating Information— Type 1L10 EXT OSC-INT OSC INT OSC DISPERSION-KC/CM COUPLED RESOLU­ TION SEARCH Sweep Rate (Oscillo­ .1 SEC/CM scope) Carefully adjust the R-F CENTER FREQ control to the point where the signal generator signal appears on the screen. Use the FINE R-F CENTER FREQ control to move the displayed spectra to the middle of the trace.
  • Page 9 The relative amplitudes of two signals can be measured with the DISPERSION-KC/CM switch set to 2, the frequency by using the R-F ATTEN switches on the Type 1L10. To width of the display is 20 kc, (+ 13% or —7%) or 2 kc/cm.
  • Page 10 NOTES...
  • Page 11 The display presented by the spectrum analyzer is the local oscillator. a plot of frequency versus signal energy. The Type 1L10 The Filter circuit is a narrowband circuit that is peaked Spectrum Analyzer is very similar to a superheterodyne at 60 me.
  • Page 12 ®...
  • Page 13 Theory of Operation— Type 1 LI 0 The sawtooth voltage from the voltage divider is applied In the SEARCH position of the COUPLED RESOLUTION to the base of emitter follower Q340. The emitter follower switch the Variable Resolution circuit (Q520 through Q560) is bypassed.
  • Page 14 Theory of Operation— Type 1 LI 0 If the parallel capacitance is cancelled, the impedance of the crystal exhibits an impedance versus frequency curve that is shown in Fig. 3-3. This cancelling of the shunt ca­ pacitance of the crystal is accomplished by C534. Since the voltage on the collector is 180°...
  • Page 15 Theory of Operation— Type 1 LI 0 vertical input of the oscilloscope. The G A IN potentiometer, In the VIDEO INPUT position of the VERTICAL DISPLAY R109B, sets the attenuation of the signal from the VIDEO switch the spectrum signal path is blocked and the input to the Output Am plifier is grounded.
  • Page 16 NOTES...
  • Page 17 Tektronix in one-pound rolls (order by part number For this reason, it is essential to determine the actual cause 251-0514-00).
  • Page 18 Sensitivity Check The Checkout and Calibration Procedures in this section are helpful in isolating trouble to a particular circuit. 1. Set the front-panel controls of the Type 1L10 as follows: Signal tracing is another important method of trouble­ RF CENTER FREQ shooting.
  • Page 19 4. Set the Type 180A Time-Mark Generator for an output frequency of 5 me. 5. Using the RF CENTER FREQ control of the Type 1L10, Fig. 4 -3 . Measurement of relative amplitude between an applied tune the 2nd harmonic (10 me) of the Type 180A signal to...
  • Page 20 Fig. 4 -4 . Equipment setup for dispersion check a t 2, 1, .5, .2, and .1 K C /C M settings of the DISPERSION-KC/CM switch. 9. W ith the FINE RF CENTER FREQ control o f the Type 1L10, position the center-frequency marker to the centerline of the graticule.
  • Page 21 50 cps modulation is clearly visible. Check sion settings of the Type 1L10. for 1 marker/cm, + 1 3 % , —7%. 22. Using Table 4-2, check the .2 and .1 settings of the TABLE 4-2 DISPERSION-KC/CM switch.
  • Page 22 Maintenance and Calibration— Type 1 LI 0 Fig. 4 -8 . Equipment setup for resolution check. Resolution Check 7. Set the DISPERSION-KC/CM and COUPLED RESOLU­ TIO N switches to .2 and center the display on the screen with the FINE RF CENTER FREQ control. 1.
  • Page 23 Maintenance and Calibration— Type 1 LI 0 Fig. 4 -1 0 . Equipment setup for checking oscillator tracking and accuracy. 10. Pull out on the COUPLED RESOLUTION control and 3. Set the output frequency of the Type 180A Time-Mark set it to 2. (Make sure the DISPERSION-KC/CM switch re­ Generator to 5 me.
  • Page 24 Checkout Procedure of this section. 2. Apply a —70dbm 60-mc signal from the Calibrated 2. Test Oscilloscope: Tektronix Type 530 or 540-Series Output r-f generator to the Type 1 LI 0 RF INPUT 5012 recommended with a Type H or K plug-in unit and a 10X connector.
  • Page 25 10.7 me signal appears and 5. V16” alien wrench. disappears. Set LI 54 to the middle of the range where the 6. Flexible plug-in extension, Tektronix part number 012- signal appears. 0038-00. g. Adjust Cl 14, Cl 24, T204, T214 and T224 (Fig. 4-12) 1.
  • Page 26 Maintenance and Calibration— Type 1 LI 0 Fig. 4 -1 2 . Location of adjustments on Wideband Amplifier and 60-mc Filter chassis. Fig. 4 -1 3 . Location of adjustments for steps k through r. 4 - 1 0...
  • Page 27 Maintenance and Calibration— Type 1 LI 0 NOTE Preset the front-panel controls of the Type 1 LI 0 as follows: To adjust L454 an offset adjustment tool may be RF CENTER FREQ 3 me needed, or the Front-End Oscillator chassis must FINE RF CENTER Midrange be removed from its mounting.
  • Page 28 W ith no signal applied to the input of the Type L557, L537, C554 and C534. 1L10, slowly turn the RF CENTER FREQ control from 1.5 me through 3 me and look for any signal indication on the screen of the oscilloscope. Except for the possibility of 1 cm wide at 3-dm down point any stray external signal radiation, there should be no sig­...
  • Page 29 8 kc. R-F ATTEN All OFF except 16db and 20 db f. Set the RF CENTER FREQ control of the Type 1L10 EXT OSC INT OSC INT OSC to bring the second harmonic of the 5 me signal onto the VERTICAL DISPLAY screen.
  • Page 30 Maintenance and Calibration— Type 1L10 Sm® © (p 5 ) t f § 5 ) o © © © © □ 1L10 © ) ) « p ) ) o Type 1 80A Time-Mark Generator © Q O © 0<P ®...
  • Page 31 Maintenance and Calibration— Type 1 LI 0 k. Turn the RF CENTER FREQ control to the 35 mm re­ gion to display the seventh harmonic of the 5 me signal. This can be verified by momentarily changing the output frequency of the signal generator to 10 me and insuring that it produces no harmonic at this point.
  • Page 32 Maintenance and Calibration— Type 1 LI 0 CENTER FREQ control with a 7 / 16" wrench. This Check for 6 cm of vertical deflection. If there is not 6 cm of deflection, set the LOG ADJ, R646 (Fig. 4-23). frees the oscillator from the front panel. (c) Carefully lift the oscillator free from the front panel.
  • Page 33 Maintenance and Calibration— Type 1 LI 0 Fig. 4 -2 4 . Equipment setup for gain compensation adjustment. c. On the Harmonic Modulator Unit, set the 60 me TRAP frequency is at the graticule centerline (see Fig. 4-25). switch to out. g.
  • Page 34 NOTES...
  • Page 35 If a part you have ordered has been replaced with a new or improved part, your local Tektronix Field O ffice w ill contact you concerning any chanae in part number. ABBREVIATIONS A N D SYMBOLS...
  • Page 36 Parts List— Type 1 LI 0 EXPLODED VIEW 5 -2...
  • Page 37 Parts List— Type 1 LI 0 EXPLODED VIEW SERIAL/MODEL NO. REF. DESCRIPTION EFF. DISC. 366-0255-00 KNOB, red—GAIN knob includes: 213-0020-00 SCREW, set, 6-32 x y8 inch, HHS 366-0249-00 KNOB, charcoal—VERTICAL DISPLAY knob includes: 213-0004-00 SCREW, set, 6-32 x 3 / 1 6 inch, HSS 262-0702-00 SWITCH, wired—...
  • Page 38 Parts List— Type 1 LI 0 EXPLODED VIEW ( C o n i ' d ) SERIAL/MODEL NO. REF. DESCRIPTION EFF. DISC. CABLE, assembly (oscillator out to oscillator chassis) 175-0325-00 175-0326-00 CABLE, assembly (oscillator in to converter filter) 333-0911-00 1030 1079 PANEL, front, Type L-10A PANEL, front.
  • Page 39 Parts List— Type 1 LI 0 EXPLODED VIEW (Coni'd) SERIAL/MODEL NO. REF. DESCRIPTION EFF. DISC. ASSEMBLY, OSCILLATOR CHASSIS (Cont'd) SOCKET, transistor, 4 pin 136-0182-00 mounting hardware: (not included w/socket alone) RING, mounting 354-0234-00 CHASSIS 441-0624-00 mounting hardware: (not included w/chassis) SCREW, 2-56 x 3 / 1 6 inch, PHS phillips 211-0079-00 COVER...
  • Page 40 Parts List— Type 1 LI 0 EXPLODED VIEW (Cont’d) SERIAL/MODEL NO. REF. DESCRIPTION EFF. DISC. CONNECTOR 131-0017-00 mounting hardware: (not included w/connector) 211-0008-00 SCREW, 4-40 x % inch, BHS LOCKWASHER, internal, # 4 210-0004-00 210-0406-00 NUT, hex, 4-40 x 3 / 1 6 inch 131-0183-00 CONNECTOR, feed thru mounting hardware for each: (not included w/connector)
  • Page 41 Parts List— Type 1 LI 0 EXPLODED VIEW (Cont'd) SERIAL/MODEL NO. REF. DESCRIPTION EFF. DISC. 136-0010-00 SOCKET, 7 pin, w/shield mounting hardware: (not included w/socket) 211-0033-00 SCREW, 4 -4 0 x 5 / 1 6 inch, PHS w/lockwasher 210-0201-00 LUG, solder, SE # 4 210-0406-00 NUT, hex, 4-40 x 3 / 1 6 inch 136-0153-00...
  • Page 42 Parts List— Type 1 LI 0 EXPLODED VIEW (C ont'd) SERIAL/MODEL NO. REF. DESCRIPTION DISC. EFF. 210-0201-00 LUG, solder, SE # 4 mounting hardware for each: (not included w/lug) SCREW, thread cutting, 5-32 inch, PHS phillips 213-0044-00 x 3 / 1 6 441-0605-00 CHASSIS mounting hardware: (not included w/chassis)
  • Page 43 Parts List— Type 1 LI 0 EXPLODED VIEW (Cont'd) SERIAL/MODEL NO. REF. DESCRIPTION DISC. EFF. 131-0373-00 CONNECTOR, standoff mounting hardware: (not included w/connector alone) NUT, hex, 2-56 x 3 / 1 (S inch 210-0405-00 LOCKWASHER, internal, # 2 210-0001-00 COIL mounting hardware for each: (not included w /co il alone) SCREW, 6-32 x V4 inch, BHS 211-0504-00...
  • Page 44 Parts List— Type 1 LI 0 EXPLODED VIEW ( C a nt’d) SERIAL/MODEL NO. REF. DESCRIPTION EFF. DISC. COIL, w/hardware 441-0614-00 CHASSIS 407-0075-00 BRACKET mounting hardware: (not included w/bracket) 211-0504-00 SCREW, 6-32 x % inch, BHS 213-0088-00 SCREW, thread forming, # 4 x ]/4 inch, PHS phillips 337-0701 -00 SHIELD mounting hardware: (not included w/shield)
  • Page 45 Parts List— Type 1L10 CABLE HARNESS & CERAMIC STRIPS SERIAL/MODEL NO. tEF. DESCRIPTION PART NO. DISC. EFF. STRIP, ceramic, 7 / 1 6 inch x 13 notches 124-0147-00 each strip includes: STUD, nylon 355-0046-00 mounting hardware for each: (not included w/strip)
  • Page 46 Parts List— Type 1L10 ACCESSORIES REF. SERIAL/MODEL NO. PART NO. DESCRIPTION EFF. DISC. 012-0097-00 CABLE, assembly (OSC OUT to OSC IN) 012-0096-00 CABLE, assembly, 24 inch, BNC to banana plug 134-0052-00 PLUG, red 070-0510-00 MANUAL, instruction (not shown) 5-12 < D...
  • Page 47 Parts List— Type 1 LI 0 ELECTRICAL PARTS Values are fixed unless marked Variable. T ektronix Ckt N o. Part No. Description S /N Range Capacitors Tolerance ± 2 0 % unless otherwise indicated. 283-0039-00 0.001 /if 500 v 283-0067-00 0.001 200 v 283-0059-00...
  • Page 48 Parts List— Type 1 LI 0 Capacitors ( C o n t ' d ) Tektronix Description Ckt N o. Part N o. S /N Range 283-0079-00 0.01 C213 250 v / i t C214 283-0067-00 0.001 /if 200 v...
  • Page 49 Parts List— Type 1 LI 0 Capacitors ( C o n t ' d . ) T ektronix Description S /N Range Part N o. Ckt N o. 250 v 283-0079-00 0.01 /if C557 281-0603-00 39 pf 500 v C558 35 v 290-0267-00 1 /if...
  • Page 50 Parts List— Type 1 LI 0 Connectors ( C o n t ' d ) T ektronix Description Ckt N o. Part N o. S /N Range 131-0372-00 Connector, Coax 131-0372-00 Connector, Coax 131-0372-00 Connector, Coax 131-0106-00 Chassis mtd., Coax, 1 contact, female J300 131-0372-00 Connector, Coax...
  • Page 51 Parts List— Type 1 LI 0 Transistors ( C o n t ' d ) T ektronix Ckt No. Part N o. Description S /N Range 151-0162-00 2N3324 Q370 2N3324 Q450 151-0162-00 1030-1259 151-0164-00 2N3702 Q450 1260-up Q500 151-0162-00 2N3324 151-0162-00 2N3324 Q510...
  • Page 52 Parts List— Type 1 LI 0 Resistors ( C o n t ' d ) Tektronix Ckt N o. Part No. Description S /N Range 316-0101-00 100O R 57 323-0410-00 182 k Prec 311-0243-00 50 k FINE FREQUENCY 315-0103-00 316-0331-00...
  • Page 53 Parts List— Type 1 LI 0 Resistors ( C o n f ' d ) T ektronix C kt N o. Part N o. Description S /N Range R327 321-0143-00 301 O Vs w Prec 321-0097-00 R328 100 O Prec 321-0097-00 R329 100 o...
  • Page 54 Parts List— Type 1 LI 0 Resistors (C o n t ' d T ektronix Ckt N o. Part No. Description S /N Range 306-0223-00 R543 22 k R544 316-0471-00 470 0 y 4 w R574 316-0103-00 y 4 w R548 306-0223-00 22 k...
  • Page 55 Parts List— Type 1 LI 0 Resistors ( C o n t ' d ) T ektronix Ckt N o. Part N o. Description S /N Range 316-0104-00 100 k R651 V4 w y4 w 316-0105-00 1 meg R652 R653 Use 308-0313-00 20 k y4 w...
  • Page 56 Parts List— Type 1 LI 0 Crystals T e ktro n ix Ckt N o. Part N o. Description S /N Range 158-0020-00 Y150 49.3 MC *120-0368-00 Discriminator 11.5 MC Y380 Y450 158-0021-00 900 KC 158-0022-00 100 KC Y530 Y550 158-0022-00 100 KC 5 -2 2...
  • Page 57 For these measurements, a 30" flexible plug-in extension cable (Tektronix Part No. 012-0038-00) was used to operate the Type 1L10 outside of the oscilloscope plug-in compartment. The oscilloscope time base was set for a free-running sweep at a 5 milli- second/centimeter rate.
  • Page 58 S W 9 S W I4 S W I9 S W 2 4 S W Z 9 S W S 4 |------ 1 1 db |------ 1 |2 d b | |-4db h -j |8 d b h -[ |lfedbl--j |- - |2 0 d b h -| RF ATTENUATOR + IOOV...
  • Page 59 R 3 8 ( o y J IO I <$> MC FILTER 5 6 5 VARIABLE OSCILLATOR $ MIXER...
  • Page 60 (oO M C 4 9 . 5 M C 1 0 .7 M C OSCI L LA TO R ^ M IX E R A M P L IF IE R .F. A M P L IF IE R - I I V <...
  • Page 61 D IF F E R E N C E A M P L IF IE R SAWTOOTH TO R4fe SOOKC J 4 0 I R E F E R E N C E D IA G R A M S <£>...
  • Page 62 VARIABLE RESOLUTION AM PLIFIER <^> T Y P E 1 LIO SPECTRUM ANALYZER...
  • Page 63 C5 "D g Z ] i- r - i D O N “ f "ZC OUTPUT A M P L IF IE R - AND DETECTOR <5 T Y P E 1 LI O SPECTRUM A N A L Y Z E R...
  • Page 64 MANUAL CHANGE INFORMATION A t Tektronix, we c o n tin u a lly strive to keep up w ith latest electronic developm ents by a d d ing circuit and com ponent improvements to our instruments as soon as they are developed and tested.
  • Page 65 TYPE 1L10 TENT lJOO PARTS LIST CORRECTION CHANGE TO: 152-0271-00 Vari-cap 2.2-26 pF D 5 ^ D 5 6 2 152-0271-00 Vari-cap 2.2-26 pF M10902/666...
  • Page 66 TYPE 1L10 TENT S/N 1260 PARTS LIST CORRECTION CHANGE TO: R603 305-0223-00 22 k w i l l now connect t o +225 V in s te a d o f +100 s u p p ly . MIOU 7 8 /1 6 6...
  • Page 67 TYPE IL lO /^ IilO PARTS LIST CORRECTION CHANGE TO: 283-0077-00 330 pF 500 V M10320/I265...
  • Page 68 Type Type Parts List Cor r e c t i o n Part Added: 0507-00 Ferrite B e a d 1 xA d d to secondary ba s e lead of T M 10,313 /11 6 5...
  • Page 69 1L10 Type 3L10 Type P a rts L i s t C o rre c tio n Change T o : R335 033^-00 M 1 0 ,^ 6 l/l2 6 s...
  • Page 70 1250 s / N Page Type Tent Pa r t s List C orrection R e m o v e : 0^53 2 8 3 - 0 0 79- 00 C e r . 0^55 2 8 3-0 079 -00 250 V C e r .
  • Page 71 Type Page Schematic C orrection PARTIAL VAR. RESOLUTION AMR ,081/1165 m i o...
  • Page 72 Type: s/N 1208 Tent Type: Tent s/j$ 165 Schematic C orrection P A R T IA L W ID E -B A N D A M P . 399/1265...