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Sony Tektronix WFM 1125 User Manual

Sony Tektronix WFM 1125 User Manual

Digital television waveform monitor option 0a/0b/0c/0d
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User Manual
WFM 1125
Digital Television Waveform Monitor
Option 0A/0B/0C/0D
071-0260-05

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  • Page 1 User Manual WFM 1125 Digital Television Waveform Monitor Option 0A/0B/0C/0D 071-0260-05...
  • Page 2 Specifications and price change privileges reserved. Printed in Japan. Sony/Tektronix Corporation, 5–9–31 Kitashinagawa, Shinagawa–ku, Tokyo 141–0001 Japan Tektronix, Inc., P.O. Box 500, Beaverton, OR 97077 TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
  • Page 3 WARRANTY Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and workmanship for a period of one (1) year from the date of shipment. If a product proves defective during this warranty period, Tektronix, at its option, either will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the defective product.
  • Page 5 Service Assurance If you have not already purchased Service Assurance for this product, you may do so at any time during the product’s warranty period. Service Assurance provides Repair Protection and Calibration Services to meet your needs. Repair Protection extends priority repair services beyond the product’s warranty period; you may purchase up to three years of Repair Protection.
  • Page 7 Table of Contents General Safety Summary ........Preface .
  • Page 8 Table of Contents Inspection and Cleaning ..........C–1 Repackaging for Shipment .

  • Page 9: Table Of Contents

    Table of Contents List of Figures Figure 1–1: Dimensions of the 1700F00 plain cabinet ... . . 1–4 Figure 1–2: 1700F02 portable cabinet ......1–5 Figure 1–3: Rear view of the waveform monitor in a 1700F02 cabinet 1–6...
  • Page 10 Table of Contents List of Tables Table 1–1: Standard accessories ......1–2 Table 1–2: Optional accessories .
  • Page 11 General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. To avoid potential hazards, use this product only as specified. Only qualified personnel should perform service procedures. While using this product, you may need to access other parts of the system.
  • Page 12 General Safety Summary Symbols and Terms Terms in this Manual. These terms may appear in this manual: WARNING. Warning statements identify conditions or practices that could result in injury or loss of life. CAUTION. Caution statements identify conditions or practices that could result in damage to this product or other property.
  • Page 13 Preface This manual describes the capabilities of the WFM 1125 Digital Television Waveform Monitor Option 0A/0B/0C/0D and its features and specifications. To install and configure the waveform monitor for use in your operating environment, refer to the first section, Getting Started. For detailed information about a feature, refer to the third section, Reference.
  • Page 14 Preface Contacting Tektronix Product For application-oriented questions about a Tektronix measure- Support ment product, call toll free in North America: 1-800-TEK-WIDE (1-800-835-9433 ext. 2400) 6:00 a.m. – 5:00 p.m. Pacific time Or contact us by e-mail: tm_app_supp@tek.com For product support outside of North America, contact your local Tektronix distributor or sales office.
  • Page 15 Getting Started...
  • Page 17 Getting Started This section presents information you need to set up your WFM 1125 Digital Television Waveform Monitor Option 0A/0B/0C/0D. This section contains the following information: H Product Description. Gives an overview of the product capabilities. H Options and Accessories. Lists the standard and optional accessories. H Installation.

  • Page 18: Table 1-1: Standard Accessories

    Getting Started H Save and Display feature that saves and recalls the currently displayed signal H CRC error detection H Gamut error detection H Infinite mode in persistence display that retains the image of transient signals H Overlay and Parade displays H Diamond, Lightning, and Bowtie displays H Four graticules for waveform display H Serial digital monitor output and CRC error monitor output...

  • Page 19: Table 1-2: Optional Accessories

    Getting Started Table 1-2: Optional accessories Accessory Part number Front Panel Cover 200 3897 01 Plain Cabinet 1700F00 Carrying Case 1700F02 Side by Side Rack Adaptor 1700F05 Blank Panel 1700F06 Utility Drawer 1700F07 Service Manual 071 0455 00 Front Panel Cover. The front panel cover protects the display face from damage and dust.

  • Page 20: Figure 1-1: Dimensions Of The 1700F00 Plain Cabinet

    Getting Started Installation This section provides instructions for installing the waveform monitor into a standard rack or one of the optional cases. At installation time, save the shipping carton and packing materials (including the anti-static bag) in case you need to ship the instrument.

  • Page 21: Figure 1-2: 1700F02 Portable Cabinet

    Getting Started WARNING. To meet EMI emission and safety specifications, the waveform monitor must be installed in a Tektronix 1700F00, 1700F02, or 1700F05 enclosure. The enclosure front edges must securely contact the conductive front bezel on all four sides. The optional 1700F00 cabinet is the basic element for all of the cabinets. The 1700F02 portable carrying case is an enhanced version of the 1700F00 cabinet, as is the 1700F05 side-by-side rack mount assembly.

  • Page 22: Figure 1-3: Rear View Of The Waveform Monitor In A 1700F02 Cabinet

    Getting Started Cabinet Installation. Secure the waveform monitor in a cabinet using two Torx T-15 screws. Figure 1–3 shows the location of these screws on the rear panel. CAUTION. Do not carry the waveform monitor in a cabinet without installing the rear panel mounting screws.

  • Page 23: Figure 1-4: The 1700F05 Rack Cabinet Holds Two Instruments

    Getting Started You can adjust the rack adapter so that the waveform monitor is aligned with other equipment in the rack. See Figure 1–4. 48.2 cm (19 in) 13.2 cm (5.3 in) Mounting holes 43.9 cm Mounting (17.3 in) holes Front panel alignment holes Figure 1-4: The 1700F05 rack cabinet holds two instruments...

  • Page 24: Figure 1-5: 1700F05 Cabinet Showing Utility Drawer And Blank Panel

    Getting Started If you are using only one side of the rack adapter, insert a blank panel (1700F06) or an accessory drawer (1700F07) in the unused section to improve airflow and appearance. Figure 1–5 shows the blank panel and drawer. 1700F05 side by side rack adapter...
  • Page 25 Getting Started Operating Environment The following environmental requirements ensure proper operation and long instrument life. Operating Temperature Operate the waveform monitor where the ambient air temperature is from 0_ C to +40_ C. Store the waveform monitor in ambient temperatures from –20_ C to +60_ C.
  • Page 26 Getting Started 1-10 WFM 1125 Option 0A/0B/0C/0D User Manual...
  • Page 27 Operating Basics...

  • Page 29: Figure 2-1: Wfm 1125 Digital Television Waveform Monitor

    Functional Overview This section provides an overview of front-panel features and rear-panel connectors. For more detailed information on functions, refer to section 3, Reference. Front Panel Overview Figure 2–1 shows the front panel of the waveform monitor. A brief discussion of each feature follows the illustration.

  • Page 30: Table 2-1: Front Panel Functions

    Functional Overview Table 2-1: Front panel functions Front panel items Item name Descriptions SELECT button and knob The function of the SELECT button and knob varies depending on the menu currently selected. For details, refer to Using the Menus on page 2-9. V POS knob Moves the displayed waveform vertically as you turn the knob.
  • Page 31 Functional Overview Table 2-1: Front panel functions (cont.) Front panel items Item name Descriptions SAVE&DISP ON button Stores the displayed waveform in the internal memory and re displays the stored waveform on the screen. When the waveform stored in the memory is displayed, the LED lights. For the purpose of comparison, the incoming video signal is also displayed.
  • Page 32 Functional Overview Table 2-1: Front panel functions (cont.) Front panel items Item name Descriptions GAIN ON button Selects the vertical magnification from the bezel menu. If the gain is enlarged, the LED lights. The bezel menu is dismissed when you press this button again. For the Waveform display, the scale value varies according to the magnification;...
  • Page 33 Functional Overview Table 2-1: Front panel functions (cont.) Front panel items Item name Descriptions CRC indicator Indicates data integrity errors. If you set the CRC LED menu to ON, the CRC LED indicator will light for 0.5 seconds when an error is detected.

  • Page 34: Figure 2-2: Rear Panel

    Functional Overview Rear Panel Overview Figure 2–2 shows the rear panel of the waveform monitor. A brief discussion of each connector follows the illustration. Power Connector The waveform monitor is designed to operate from a single-phase power source with the neutral conductor at or near earth ground. Only the line conductor is fused for over-current protection.

  • Page 35: Table 2-2: Rear Panel Functions

    Functional Overview Table 2-2: Rear panel functions Rear panel items Item name Descriptions POWER button Powers the waveform monitor on or off. ANALOG OUT(Pr, Pb, Y) Provides three 75 W component signal outputs to drive a connectors component picture monitor. The output format is YP SMPTE 240M/274M or SMPTE 296M.
  • Page 36 Functional Overview Table 2-2: Rear panel functions (Cont.) Rear panel items Item name Descriptions VGA OUTPUT connector Provides a VGA signal output identical to the signal displayed on the screen. Connect this output to a VGA monitor or projector to display screen information, or connect the output to a video printer to make a screen hardcopy.

  • Page 37: Figure 2-3: Elements Of The Wfm 1125 Menu Controls

    Functional Overview Using the Menus You can set most functions with either context sensitive bezel button menus or general configuration menus. The following subsections outline and describe how to make selections from these menus. Figure 2–3 shows the buttons and knob used for menu selection.

  • Page 38: Figure 2-4: Six Readout Areas On The Screen

    Functional Overview Screen Readouts In addition to the areas displaying waveforms and menus, the waveform monitor has six readout areas that display settings and error status information, as shown in Figure 2–4. A brief discussion of each feature follows the illustration. Figure 2-4: Six readout areas on the screen 1.
  • Page 39 Functional Overview 3. Field rate and Scanning format This section displays the field rate for the reference signal. For Option 0D, the scanning format (i, p, or p(sF)) is also displayed. If the field rate is no supported value, then “??.?? Hz” is displayed and “Missing Reference” appears at the bottom of the display.
  • Page 40 Functional Overview 2-12 WFM 1125 Option 0A/0B/0C/0D User Manual...
  • Page 41 Reference...

  • Page 43: Figure 3-1: Typical Bowtie Display On The Wfm 1125

    Reference This section presents detailed information on menus and functions of the waveform monitor. The topics are organized alphabetically. Most topics are named after the front panel labels and button names. Bowtie Display The Bowtie display evaluates the relative amplitude and timing among the three video channels.

  • Page 44: Figure 3-2: Bowtie Waveform Showing A Timing Error In Ch 3

    Reference Shifted null point Figure 3-2: Bowtie waveform showing a timing error in CH 3 Although you can use Waveform or Lightning displays to determine channel timing with most test signals, the Bowtie method provides better resolution of channel timing and is the easiest to use when the Bowtie test signal is available. Relative Gain Check The bowtie measurement also provides a method to determine whether the relative channel gain is correct.

  • Page 45: Figure 3-4: Configure Menu Display Of Option 0C

    Reference Configure Menu The Configure menu allow you to set or select a persistence mode or perform various other tasks. Press and hold the INTEN/MENU button on the front panel to bring up the Configure menu. For information on moving the highlight from column to column, refer to Using the Menus on page 2–9.

  • Page 46: Table 3-1: Menu Functions

    Reference Table 3-1: Menu functions Menu name Menu items Descriptions PERSISTENCE AUTO AUTO sets the optimum screen persistence. AUTO is the default setting. NONE NONE sets zero persistence. INFINITE INFINITE sets the persistence to infinite. When a waveform is displayed in INFINITE, press the INF RESET bezel button to reset the waveform display.
  • Page 47 Reference Table 3-1: Menu functions (Cont.) Menu name Menu items Descriptions COLOR Selects color matrix coefficient for converting Y/P signal to RGB and selects graticules for vector display. Affects transcoded RGB or GBR waveform, diamond display, and VECTOR color bar target values. This menu is available for Option 0A, 240M/274M format mode of Option 0C or Interlace mode of Option 0D.
  • Page 48 Reference Table 3-1: Menu functions (Cont.) Menu name Menu items Descriptions SCALE Provides the selection of graticule type in waveform display mode. -300 to 800 mV full scale with mV graticule. The default setting is mV. -300 to 800 mV full scale with % graticule as a percent of 700 mV FULL mV 0 to 700 mV full scale with mV graticule FULL %...
  • Page 49 Reference Table 3-1: Menu functions (Cont.) Menu name Menu items Descriptions RESET PRIORITY Specifies the menu for which the reset through the bezel button will operate. You should use this item if you have selected both INFINITE in the PERSISTENCE menu or RATE or COUNT in the CRC DISPLAY menu together.

  • Page 50: Figure 3-5: Construction Of The Diamond Display

    Reference Diamond Display The Diamond display is very effective at showing the relationship between the R, G, and B video signals. The waveform monitor converts the Y, P and P components recovered from the serial signal to R, G, and B to form the Diamond display.

  • Page 51: Figure 3-6: Out-Of-Gamut Signals On A Diamond Display

    Reference Checking RGB Gamut For a signal to be in gamut, all signal vectors must lie within the G-B and G-R diamonds. Conversely, if a vector extends outside the diamond, it is out of gamut. The direction of an excursion out of gamut indicates which signal is excessive. Errors in green amplitude affect both diamonds equally, while blue amplitude errors affect only the top diamond and red errors affect only the bottom diamond.
  • Page 52 Reference Digital Intensity The digital intensity feature displays waveforms in two-valued level (no grey-scale) when the intensity of the waveform is set to maximum. With this feature, you can avoid missing specific waveform phenomena due to lack of trace intensity. Use the following steps to display waveforms in two-valued level.

  • Page 53: Figure 3-7: Waveform Display Mode, Mv Graticule

    Reference Millivolts (mV) Graticule Figure 3–7 shows the Waveform display mode in mV graticule. H Vertical Scale. The vertical scale is marked in millivolts (mV) and extends from –300 mV to +800 mV in 100 mV increments. Each major division is divided into 5 minor divisions which equal 20 mV each.

  • Page 54: Table 3-2: Horizontal Scale

    Reference Table 3-2: Horizontal scale Sweep setting Major divisions Minor divisions Availability 1 line Option 0A 2.5 ms 0.5 ms Option 0C in 240M/274M format mode Option 0B 2.0 ms 0.4 ms Option 0C in 296M format mode 100 ns 20 ns magnified sweep 2 lines...

  • Page 55: Figure 3-8: Waveform Display Mode, % Graticule

    Reference Percent (%) Graticule Figure 3–8 shows the Waveform display mode in % graticule. H Vertical Scale. The scale is marked in percent (%) of 700 mV (100 %) and extends from –40 % to +120 % in 10 % increments. Each major division is divided into 2 minor divisions which equal 5 % each.

  • Page 56: Figure 3-9: Waveform Display Mode, Full Mv Graticule

    Reference Full Millivolts (mV) Figure 3–9 shows the Waveform display mode in Full mV graticule. Graticule H Vertical Scale. The vertical scale is marked in millivolts (mV) and extends from 0 mV to +700 mV in 100 mV increments. Each major division is divided into 5 minor divisions which equal 20 mV each.

  • Page 57: Figure 3-10: Waveform Display Mode, Full % Graticule

    Reference Full Percent (%) Graticule Figure 3–10 shows the Waveform display mode in full % graticule. H Vertical Scale. The scale is marked in percent (%) of 700 mV (100 %) and extends from 0 % to +100 % in 10 % increments. Each major division is divided into 5 minor divisions which equal 2 % each.

  • Page 58: Figure 3-11: Construction Of The Lightning Display

    Reference Lightning Display The Lightning display plots the color difference signals, P and P , against the luminance (Y) signal. In the top half of the Lightning display, P is plotted against Y, and on the bottom half, P is plotted against inverted Y. The vertical center is the 0 V or black-clamp point.

  • Page 59: Figure 3-12: Lightning Graticule Showing Interchannel Timing Errors

    Reference Figure 3–12 shows the Lightning graticule with a trace. The target boxes at the end of each vector indicate a tolerance of ±14 mV. The closely spaced small dots provide a guide for checking transitions. These dots are spaced respectively 2 ns, 5 ns, and 13.5 ns apart from the vertical center.
  • Page 60 Reference Interchannel Timing The scale (sequence of dots) between the green and magenta targets provides a Measurement way to check interchannel timing (CH-2 to CH-1 and CH-3 to CH-1) or signal delay. If the color difference signal is not coincident with luminance, the transitions between color dots will bend.
  • Page 61 Reference YPbPr Figure 3-13: Parade display of Y and P signals Persistence Display In this mode, the waveform is repeatedly over-written on the graticule so that you can detect waveform transients. Press the INTEN/MENU button on the front panel and then choose one of the persistence mode from the PERSISTENCE menu.

  • Page 62: Figure 3-14: Example Of Persistence Display

    Reference YPbPr Figure 3-14: Example of Persistence display Save and Display The waveform monitor provides the Save and Display feature that allows you to save an incoming signal to the internal memory and put it back to the screen soon to display together with incoming signal continuously updated.

  • Page 63: Figure 3-15: Waveform Display Example In Save And Display Mode

    Reference YPbPr SAVE : ACQU : Figure 3-15: Waveform display example in Save and Display mode Setting Sweep The sweep rate for the horizontal axis and magnification along the horizontal axis can be changed using the SWEEP button and MAG button, respectively. Sweep The sweep rate can be selected from the bezel menu, however the sweep rate readout on the bezel menu is available only when CH1, CH2, CH3, or PARADE...
  • Page 64 Reference H 2 FIELD: All the lines in 2 video fields are displayed. This mode is available for Option 0A, 240M/274M format mode of Option 0C, or Interlace mode of Option 0D. The following options are available when Parade is selected: H 3 LINE: Waveforms of 3 line is displayed successively.

  • Page 65: Figure 3-16: Status Display Example

    Reference Data display area Field rate Field Selected line Bezel menu CRC Error count Figure 3-16: Status display example Explanations of each type of information that appears in the Status display follow. Refer to labels in Figure 3–16 as you read on. Selected Line Displays the currently selected line.
  • Page 66 Reference GOTO EAV. Jumps to the sample address at which the EAV (End of Active Video) exists, and displays the data starting from that sample address. GOTO SAV. Jumps to the sample address at which the SAV (Start of Active Video) exists, and displays the data starting from that sample address.

  • Page 67: Figure 3-17: Vector Display Relationship Of The Pr And Pb Signals

    Reference Figure 3–18 shows the actual graticule with trace lines indicating how a trace would appear on the graticule. Unlike a composite vectorscope, P and P are displayed with equal gains. Signals do not have the same magnitude and angle as represented on a PAL/ NTSC composite encoded signal vectorscope.

  • Page 68: Figure 3-18: Vector Display Graticule

    Reference Vector Graticule The Vector graticule, shown in Figure 3–18, operates as a component vector- scope. Each chrominance vector terminates as a bright dot in a target. The dot brightness corresponds to the duration of the color bar. The distance from the center box to the target box corresponds to the magnitude of the color being measured.
  • Page 69 Appendices...

  • Page 71: Table A-1: Vertical Deflection System

    Appendix A: Specifications Tables A–1 through A–20 list the electrical specifications for the WFM 1125 Digital Television Waveform Monitor Option 0A/0B/0C/0D. Performance requirements are generally quantitative and can be tested by qualified service personnel. Reference information describes useful operating parameters and typical characteristics and performance.

  • Page 72: Table A-2: Horizontal Deflection System

    Appendix A: Specifications Table A-2: Horizontal deflection system Characteristic Performance requirements Reference information Sweep Rate When there is no signal input, the message No Signal" appears and no waveform is displayed. Option 0A or 240M/274M format mode of Option 0C 1 Line 2.5 ms/div, 0.1 ms/div (MAG ON) Refreshed 1/4 line rate of applied video sync.
  • Page 73 Appendix A: Specifications Table A-2: Horizontal deflection system (Cont.) Characteristic Performance requirements Reference information Option 0D (Interlace mode) 1 Line 3.0 ms/div, 0.1 ms/div (MAG ON) Refreshed 1/4 line rate of applied video sync. 2 Lines 6.0 ms/div, 0.4 ms/div (MAG ON) : 1035/60i, 1035/59.94i, 1080/60i, 1080/59.94i 6.0 ms/div, 1.0 ms/div (MAG ON) : 1125/50i Refreshed 1/8 line rate of applied video sync.
  • Page 74 Appendix A: Specifications Table A-2: Horizontal deflection system (Cont.) Characteristic Performance requirements Reference information Option 0D (Progressive mode) 1 Line 2.0 ms/div, 0.1 ms/div (MAG ON) : 720/60p, 720/59.94p 3.0 ms/div, 0.1 ms/div (MAG ON) : 1080/24p, 1080/23.98p Refreshed 1/17 line rate of applied video sync : 720/60p, 720/59.94p Refreshed 1/4 line rate of applied video sync : 1080/24p, 1080/23.98p...

  • Page 75: Table A-3: Serial Digital Video Interface

    Appendix A: Specifications Table A-3: Serial digital video interface Characteristic Performance requirements Reference information Format 1.4835 to 1.485 Gbps, complying with BTA S004A, SMAPTE 292M. Serial Input Impedance 75 W Unbalanced Monitor Output 800 mVp p ±10 %. 800 mVp p ±10 % Level Impedance 75 W Unbalanced...

  • Page 76: Table A-6: External Reference Input

    Appendix A: Specifications 1 (Cont.) Table A-5: Stripped AES/EBU digital audio output Characteristic Performance requirements Reference information Phase Lock Time t15 s Output Channel CH A:1/2, 3/4, 5/6, 7/8 CH B:1/2, 3/4, 5/6, 7/8 The same channel is not selected on CHA and CHB at the same time.

  • Page 77: Table A-8: Field Rate Display

    Appendix A: Specifications Table A-8: Field rate display Characteristic Performance requirements Reference information Target Signal Selected Reference Signal Display Contents Internal Detected Field Rate 60.00 Hz 59.97 Hz to 60.03 Hz 59.94 Hz 59.91 Hz to 59.97 Hz ??.?? Hz u60.03 Hz or t59.91 Hz (Display Missing Reference") Display Contents (Interlace mode of...

  • Page 78: Table A-9: Rbg Transcoder

    Appendix A: Specifications Table A-9: RBG transcoder Characteristic Performance requirements Reference information Matrix coefficient SMPTE240M Gi = Yi - 0.2266 P i - 0.4766 P Bi = Yi + 1.826 P Ri = Yi + 1.576 P SMPTE274M, SMPTE296M Gi = Yi - 0.1870 P i- 0.4678 P Bi = Yi + 1.8558 P Ri = Yi + 1.575 P...

  • Page 79: Table A-12: Bowtie Mode

    Appendix A: Specifications Table A-12: Bowtie mode Characteristic Performance requirements Reference information Common Mode Rejection Ratio u 44 dB to 15 MHz Amplitude Error t 0.25 % Internal Timing Match Zero error (co sited data) Table A-13: Status display mode Characteristic Performance requirements Reference information...

  • Page 80: Table A-16: Calculation Dynamic Range

    Appendix A: Specifications Table A-16: Calculation dynamic range Characteristic Performance requirements Reference information Resolution Mode With 10 bit calculation: Y, R, G, B: -50 to 760 mV, :-390 to +390 mV. Waveform may have some distortion when input data in analog level goes out of above ranges.

  • Page 81: Table A-20: Installation Requirements

    Appendix A: Specifications Table A-19: AC power source (Cont.) Characteristic Performance requirements Reference information Peak Inrush Current 10 A Supply Connection Detachable cord set Per EN 55103 1 Annex B Table A-20: Installation requirements Characteristic Performance requirements Reference information Heat Dissipation Maximum Power 90 W max, 1.0 A rms at 50 Hz Maximum Dissipation Voltage...

  • Page 82: Table A-21: Environmental Characteristics

    Appendix A: Specifications Environmental Characteristics Table A-21: Environmental characteristics Characteristic Standard and reference information Temperature Operating 0° to +40° C Non operating -20° to +60° C Altitude Operating 4,500 m Maximum operating temperature decreases 1° C each 300 m above 1,500 km. Non operating 15,000 m Relative humidity...

  • Page 83: Table A-22: Physical Characteristics

    Appendix A: Specifications Physical Characteristics Table A-22: Physical characteristics Characteristics Descriptions Dimensions Height 133 mm Width 216 mm Depth 432 mm Weight Approximately 6.0 kg Shipping Approximately 8.3 kg Safety and EMI Table A-23: Certifications and compliances Category Standards or description EC Declaration of Conformity - Meets intent of Directive 89/336/EEC for Electromagnetic Compatibility.
  • Page 84 Appendix A: Specifications Table A-23: Certifications and compliances (Cont.) Category Standards or description EC Declaration of Conformity - Compliance was demonstrated to the following specification as listed in the Official Journal of the Low Voltage European Union: Low Voltage Directive 73/23/EEC, amended by 93/69/EEC EN 61010 1:1993 Safety requirements for electrical equipment for measurement control and laboratory use.

  • Page 85: Figure B-1: Pin Assignments For The Rs-232C Connector

    Appendix B: Remote Operation The waveform monitor has two multi-pin connectors on the rear panel that provide different types of remote control. The RS-232C port provides for a status data output and factory servicing. The REMOTE connector provides a way to load or save presets.
  • Page 86 Appendix B: Remote Operation RS 232C Remote The following remote command can be sent through the RS-232C connector: Command DUMP When this command is received on STATUS mode, the waveform monitor outputs the selected one line data from EAV. If this command is received on any other mode, the waveform monitor returns an error message.

  • Page 87: Figure B-2: Pin Assignments For The Remote Connector

    Appendix B: Remote Operation Figure B-2: Pin assignments for the REMOTE connector Table B-1: Remote connector pin assignments and functions Pin number Function Information Line, Field Option 0A, 240M/274M format mode of Option 0C, or Interlace mode of Option 0D. Field is set to ON and line is set to OFF when TTL signal level goes from High to Low.
  • Page 88 Appendix B: Remote Operation Table B-1: Remote connector pin assignments and functions (cont.) Pin number Function Information Recall 1 Front panel settings are recalled from the memory location specified by the following combinations of levels for pins 5 and 7 when the TTL level goes from Low to High. Memory Location Pin 5...
  • Page 89 Appendix C: Cleaning & Service This appendix describes how to clean the exterior of the WFM 1125 Digital Television Waveform Monitor. Regularly scheduled cleaning is not necessary for the waveform monitor. However, when done regularly, cleaning may help prevent instrument malfunction and may enhance its reliability. Preventative maintenance consists of visually inspecting and cleaning the instrument and using general care when operating it.

  • Page 90: Table C-1: External Inspection Check List

    Appendix C: Cleaning & Service Inspection Inspect the outside of the waveform monitor for damage, wear, and missing parts, using Table C–1 as a guide. A waveform monitor that appears to have been dropped or otherwise abused should be checked thoroughly to verify correct operation and performance.
  • Page 91 Appendix C: Cleaning & Service Repackaging for Shipment To ship the waveform monitor to a Tektronix Service Center for service, follow these instructions: 1. Attach a tag showing the name of the owner, the complete address, the phone number, the instrument serial number and a description of the required service.
  • Page 92 Appendix C: Cleaning & Service WFM 1125 Option 0A/0B/0C/0D User Manual...
  • Page 93 Glossary...
  • Page 95 Glossary Accuracy The closeness of the indicated value to the true value. Bandwidth The range of frequencies over which signal amplitude remains constant (within some limit) as it is passed through a system. Black Burst Analog timing reference signal containing composite sync and color-burst with a black luminance level.
  • Page 96 Glossary Composite Video A single video signal containing all of the necessary information to repro- duce a color picture. Created by adding quadrature amplitude modulated R–Y and B–Y to the luminance signal for NTSC systems or U and V to the luminance signal for PAL systems.
  • Page 97 Glossary Least Significant Bit. The lowest weighted bit or signal line. Luminance The signal (Y) which represents brightness or the amount of light in the picture. Luminance is the only signal required for black and white pictures. For color systems, it is obtained as a weighted sum (Y = 0.3R + 0.59G + 0.11B) of the R, G, and B signals.
  • Page 98 Glossary In signal terms, saturation is determined by the ratio between luminance level and chrominance amplitude. It should be noted that a vectorscope does not display saturation; the length of the vectors represents chrominance amplitude. In order to verify that the saturation of the colors in a color bar signal is correct, you must check luminance amplitudes with a waveform monitor in addition to observing the vectors.
  • Page 99 Index...
  • Page 101 Index Numbers CRC indicator, 2–5 CRCE OUT connector, 2–7 1700F00 cabinet, 1–5 CRT blinking, 1–9 1700F02 portable cabinet, 1–5 CURSOR button, 2–4 Accessories, 1–2 Diamond display, 3–8 optional, 1–3 checking RGB gamut, 3–9 standard, 1–2 construction of the Diamond graticule, 3–8 Accuracy, Glossary–1 Digital intensity, 3–10 Display...
  • Page 102 Index Graticule, Glossary–2 PbPr gain with Lightning display, 3–18 for Vector display, 3–26 phase with Vector display, 3–26 Lightning display, 3–17 vector timing with Vector display, 3–26 Graticules, 3–10 Mechanical installation, 1–4 Waveform graticules, 3–10 Memory, Waveform, 3–20 full millivolts, 3–14 Menus, using the menus, 2–9 full percent, 3–15 MONITOR connector, 2–7...
  • Page 103 Index RS-232 connector, 2–8 RS-232C, connector pin assignments, B–1 U, Glossary–4 Using the menus, 2–9 Safety specifications, A–13 Saturation, Glossary–3 Save and Display, 3–20 V, Glossary–4 SAVE&DISP button, 2–3 V POS knob, 2–2 Screen Vector display, 3–24 blinking, 1–9 amplitude measurement, 3–26 readouts, 2–10 graticule, 3–26 SELECT, button and knob, 2–2...
  • Page 104 Index Index-4 WFM 1125 Option 0A/0B/0C/0D User Manual...

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