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Service Manual WFM 1125 Digital Television Waveform Monitor

1. Low Pass Filter lt 10 dB at 15 MHz The response at 15 kHz does not vary more than 0 5 between FLAT and LPF Gain Frequency response and gain accuracy are maintained in X5 and X10 Offset Range 350 mV for CH 2 and 3 to CH 1 Cursor Error lt 0 25 of full scale Scale mV Resolution of 40 pixel 100 mV div Standard Resolution of 60 pixel 100 mV div Full Resolution of 28 pixel 10 div Standard Resolution of 42 pixel 10 div Full WFM 1125 Option Service Manual 1 3 Specifications Table 1 2 Horizontal deflection system Characteristic Sweep Rate Option OA or 240M 274M format mode of Option 0C 1 Line 2 Lines 3 Lines Overlay 1 Field 2 Field 3 Field Performance requirements Reference information When there is no signal input the message No Signal appears and no waveform is displayed 2 5 us div 0 1 us div MAG ON Refreshed 1 4 line rate of applied video sync 5 0 us div 0 2 us div MAG ON Refreshed 1 8 line rate of applied video sync 7 5 us div Refreshed 1 13 line rate of applied video sync 2 5 us div 0 1 us div MAG ON Refreshed 1 13 line rate of applied video sync Equal to the field rate of applied video sync Equal to the frame rate of applied video sync Equal to the field rate of applied video sync Option OB or 296M format mode of Option 0C 1 Line 2 Lines 3 Lines O
2. Front panel alignment holes Figure 2 4 The 1700F05 rack cabinet holds two instruments WFM 1125 Option 0A 0B 0C OD Service Manual 2 7 Preparation for Use 2 8 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 2 5 shows the blank panel and drawer 1700F05 side by side rack adapter 1700F07 utility drawer 1700 06 blank panel Figure 2 5 1700F05 cabinet showing utility drawer and blank panel WFM 1125 Option 0A 0B OC OD Service Manual Preparation for Use Supplying Operating Power A A Power Cord Information NOTE Read all information and heed all warnings in this subsection before connecting the waveform monitor to a power source WARNING AC POWER SOURCE AND CONNECTION The waveform monitor operates from a single phase power source It has a three wire power cord and two pole three terminal grounding type plug The voltage to ground earth from either pole of the power source must not exceed the maximum rated operating voltage 240 volts Before making connection to the power source be sure the waveform monitor has a suitable two pole three terminal grounding type plug GROUNDING This instrument is safety Class 1 equipment IEC designation All accessible conductive parts are directly connected through the grounding conductor of the power cord to
3. RS 232C cable with 9 pin D type connectors A60 DC DC board view from top A20 Main board view from top J100 and J110 connector pin configurations Interconnections Block diagram A20 Main board block diagram Figure 10 1 WFM 1125 Digital Television Waveform Monitor exploded view WFM 1125 Option 0A 0B 0C OD Service Manual 2 4 2 5 2 6 2 7 2 8 2 13 2 15 2 17 2 19 4 6 4 13 4 16 4 18 4 20 4 24 5 2 Table of Contents List of Tables Table 1 1 Table 1 2 Table 1 3 Table 1 4 Table 1 5 Table 1 6 Table 1 7 Table 1 8 Table 1 9 Table 1 10 Table 1 11 Table 1 12 Table 1 13 Table 1 14 Table 1 15 Table 1 16 Table 1 17 Table 1 18 Table 1 19 Table 1 20 Table 1 21 Table 1 22 Vertical deflection system 1 3 Horizontal deflection system 1 4 Serial digital video interface 1 7 Analog Output 1 7 Stripped AES EBU digital audio output 1 1 7 External reference input 1 8 Format display 1 8 Field rate display 1 9 RBG transcoder 1 10 Component vector mode 1 10 Li
4. SMA to BNC adapter 50 Q BNC cable 50 Q BNC cable 75 10 50 Q 75 Q BNC cable minimum loss pad Parallel signal cable PSC1125 TSG1001 generator rear panel converter rear panel WFM1125 waveform monitor rear panel Parallel signal cable 75 to 50 Q minimum loss pad Figure 4 7 Monitor output test initial hookup Initial Setups m TSG1001 FORMAT SMPTE 274M 60Hz for Option 0A SMPTE 296M for Option 0B m The Waveform Monitor m Oscilloscope Vertical san CHI Vertical scale 100 mV div Vertical coupling AC Vertical offset OV Vertical position Center 4 24 WFM 1125 Option 0A 0B OC OD Service Manual Performance Verification Horizontal sweep 200 ps div Trigger mode Auto Trigger coupling AC Trigger level OV Trigger slope Positive Display mode Color Grading or Infinite Procedure 1 Confirm the output voltage from MONITOR connector is 800 mV 10 VGA output This test confirms that the VGA signal is output correctly The following equipment is required Equipment Required VGA monitor VGA video cable 1 Connect the VGA monitor to the VGA OUTPUT on the waveform monitor rear panel using the VGA video cable 2 Confirm the same view as waveform moni
5. 1 Remove the power supply module a Remove the three screws securing the power supply module to the instrument chassis b Slide the power supply module off of the chassis Connect the power cord to the waveform monitor and turn on the power switch on the rear panel Attach the P6139A probe to the oscilloscope CH1 input Locate the test points TP101 and TP110 on the A40 CPU board See Figure 5 5 Locate the variable resistor VR501 on the Power Supply module See Figure 5 6 Adjust the voltage a Connect the grand lead of the probe to the TP101 GND and the probe tip to the TP110 VCC b Turn the VR501 clockwise or counterclockwise to align the trace with the center graticule on the oscilloscope If necessary change the vertical scale setting up to 20 mV div Install the power supply module a Position the power supply module on the chassis b Install the three screws securing the power supply module to the instrument chassis WFM 1125 Option 0A 0B 0C OD Service Manual 5 13 Adjustment Procedures 5 14 WFM 1125 Option 0A 0B OC OD Service Manual Maintenance Maintenance This section contains the information needed to do corrective maintenance on the WFM 1125 Digital Television Waveform Monitor Option 0A 0B 0C 0D The following subsections are included Preparation Introduction plus general information on preventing damage to internal modules when doing maintenance Inspection and Cleaning
6. Connect AUDIO CHA connector from the waveform monitor rear panel to the oscilloscope CH1 input using the 75 2 BNC cable and the BNC T connector Terminate the other side of BNC T connector with the 75 Q terminator Initial Setups Oscilloscope Waveform CHI Vertical scale 200 mV div Vertical Offset OV Vertical Position Center Horizontal Scale 100 ns div Trigger mode EDGE Trigger Source CHI Trigger Level 140 mV Procedure 1 Align the 0 mV level of the displayed signal with the center graticule on the oscilloscope 2 Using the oscilloscope measurement function perform the amplitude measurement 3 Verify and adjust the A10 R166 so that the amplitude is 1 00 V 4 Change the BNC cable from the AUDIO CHA connector to the AUDIO CHB connector 5 Align the 0 mV level of the displayed signal with the center graticule on the oscilloscope 6 Using the oscilloscope measurement function perform the amplitude measurement 7 Verify and adjust the A10 R172 so that the amplitude is 1 00 V WFM 1125 Option OA OB OC OD Service Manual Adjustment Procedures Voltage Adjustment Preparations To perform the output adjustments you must first remove the enclosure cabinet For removing the enclosure refer to Preparation on page 5 2 After you have remove the enclosure cabinet find the test points on the A40 CPU board
7. Information and procedures for inspecting the waveform monitor and cleaning its external and internal modules Removal and Installation Procedures are not provided in this manual Firmware Updates The firmware of this instrument can be downloaded from a PC This section describes the contents of the firmware floppy disk and procedures for downloading Troubleshooting Information for isolating and troubleshooting failed modules Included is diagnostics and troubleshooting trees Use troubleshoot ing trees if the faulty module could not be isolated in the diagnostic procedures Related Maintenance Procedures The following sections contain information and procedures related to mainte nance Section 2 Operating Information covers instructions useful when operating the waveform monitor in order to troubleshoot it Section 3 Theory of Operation contains a circuit description at the module or block level Section 4 Performance Verification contains procedures that may be useful in isolating problems to modules by testing instrument performance Section 5 Adjustment Procedures addresses after repair adjustment It contains a procedure for adjusting the display circuit module of the wave form monitor Section 9 Diagrams contains a block diagram using individual modules as blocks and an interconnection diagram showing connections between the modules Section 10 Mechanical Parts List lists all field replace
8. Table 7 1 Standard accessories Accessory Part number User Manual 071 0260 XX U S Power Cord 161 0216 XX WFM 1125 Option 0A 0B 0C 0D Service Manual 7 1 Options Optional Accessories 7 2 The following optional accessories listed in Table 7 2 can be ordered with the monitor or purchased through a Tektronix field office or distributor When ordering include both the name and part number if available of the option Table 7 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 Front Panel Cover The front panel cover protects the display face from damage and dust 1700F00 Plain Cabinet This cabinet is made of durable metal and painted silver gray Ventilating holes in the top bottom and sides of the cabinet help dissipate heat 1700F02 Carrying Case This portable cabinet is similar to the 1700F00 but it has rubber feet a carrying handle a flipstand and a front cover 1700F05 Side by Side Rack Adapter The 1700F05 allows you to mount two half rack width instruments in a standard 19 inch rack 1700F06 Blank Panel When you use only one side of a 1700F05 enclosure insert 1700F06 Blank Panel in the unused side to improve appearance and air flow 1700F07 Utility Drawer When you use only one side of a 1700F05 install the 1700F07 utility drawer
9. load0D Return Case 1 Option 0C Type 1 Return WFM 1125 Option OA OB OC OD Service Manual Firmware Updates Case 2 Option OA Type cd 1125 lt Return gt load0A lt Return gt Case 3 Option OB Type cd 750 lt Return gt load0B Return Following menu appears on the screen Select Download item 0 ALL 1 Firmware 2 TTF Files 3 GF Files 4 XY files 5 Graticule Data Q quit Item Number Type 0 lt Return gt The download is completed in about 20 min for Option OA and Option 0B or 30 min for Option OC and Option OD After the download has been finished the download program exit automatically Resetting the waveform Monitor Press and hold the INTEN MENU button on the front panel to the Configure menu Turn the SELECT knob to select the FACTORY EXECUTE and press OK bezel button to reset factory settings NOTE Be sure to reset the waveform monitor to factory settings after the download process is completed If you skip this procedure the waveform monitor may not perform correctly WFM 1125 Option Service Manual 6 17 Firmware Updates Performance Verification After you download the firmware perform the performance verification procedures described in Section 4 Performance Verification 6 18 WFM 1125 Option 0A 0B 0C OD Service Manual Troubleshooting This subsection contains diagnostic procedures and troubleshooting tr
10. A B button to select the CH B connector on the rear panel for input signal and confirm m The INPUT B LED lights m The message NO SIGNAL is displayed at the lower part of the screen and the waveform disappears WFM 1125 Option Service Manual 4 9 Performance Verification 4 10 24 25 26 27 28 29 30 31 32 33 34 35 For the instrument with serial number J340101 and above m TheINPUT B LED light m Waveform changes a line Switch the PSC1125 cable connection from the CH A to the CH B on the waveform monitor and confirm m The waveform appears on the screen again On the TSG1001 front panel press the SIGNAL SET button twice On the TSG1001 front panel press the COLOR BARS button and use the knob to lower the CIRCLE FREQ Press the SAVE amp DISP ON button and confirm m The SAVE amp DISP ON LED lights m The stationary and moving waveforms overlap Press the SAVE amp DISP ON button and confirm m The stationary waveform disappears m The SAVE amp DISP ON LED goes off On the TSG1001 front panel press the SIGNAL SET button twice Press and hold the INTEN MENU button and confirm m The MENU can be selected by turning the SELECT knob Press the INTEN MENU button again Then confirm m The menu disappears m The trace moves left and right by turning H POS knob Press the HORIZONTAL MAG button to set it to on and confirm m The trace move
11. Do not perform internal service or adjustments of this product unless another person capable of rendering first aid and resuscitation is present Disconnect Power To avoid electric shock disconnect the mains power by means of the power cord or 1f provided the power switch Use Caution When Servicing the CRT To avoid electric shock or injury use extreme caution when handling the CRT Only qualified personnel familiar with CRT servicing procedures and precautions should remove or install the CRT CRTs retain hazardous voltages for long periods of time after power is turned off Before attempting any servicing discharge the CRT by shorting the anode to chassis ground When discharging the CRT connect the discharge path to ground and then the anode Rough handling may cause the CRT to implode Do not nick or scratch the glass or subject it to undue pressure when removing or installing it When handling the CRT wear safety goggles and heavy gloves for protection Use Care When Servicing With Power On Dangerous voltages or currents may exist in this product Disconnect power remove battery if applicable and disconnect test leads before removing protective panels soldering or replacing components To avoid electric shock do not touch exposed connections X Radiation To avoid x radiation exposure do not modify or otherwise alter the high voltage circuitry or the CRT enclosure X ray emissions generated within this product have bee
12. Open SW11 Close SW11 m The display changes to PARADE Close SW12 Open SW11 Close pin 11 m The display changes to CHI Close SW 10 m The SAVE amp DISP LED lights Open SW10 m The SAVE amp DISP LED goes out Close SW1 m The display changes to 1FIELD Close SW3 m The display changes to 2FIELD Open SW3 Open SW1 m The display changes to 1LINE resulting in the Y signal being displayed Close SW2 WFM 1125 Option Service Manual 4 21 Performance Verification 4 22 22 23 24 25 26 27 28 29 30 31 32 33 m The display changes to the green display Press and hold the INTEN MENU button and then select SAVE PRESET 1 5 OK Press the CH2 button and select SAVE PRESET 2 OK Press the CH3 button and select SAVE PRESET 3 OK Press the OVERLAY PARADE button and select SAVE PRESET 4 gt OK Close SWS m The CH2 LED lights Close SW7 m The CH1 LED lights Open pin 5 of D type m The CH3 LED lights Open SW7 m The CHI CH2 CH3 and PARADE LED light Close SW6 Open SW6 Close SW7 m The CH3LED lights Open SW7 m The CH1 LED lights The following procedures are only needed for checking the format mode of Option 0D 34 35 Close SWA m The display changes to Progressive format mode Close SW8 WFM 1125 Option 0A 0B OC OD Service Manual Performance Verification m The display changes to SegmentFf
13. Pb Pr 1920 03ff 03ff 1921 0000 0000 1922 0000 0000 SAVE This command stores the current instrument settings in the memory location specified RECALL This command recalls the instrument settings from the memory location specified The rear panel REMOTE connector is a 15 pin D type female connector that allows low level remote control All the active control lines go to low level by grounding or TTL low level input Low means the function that can be effective when that pin is grounded or becomes TTL low level 0 to 0 8 V and High means the function can be effective when that pin is opened or becomes TTL high level 2 to 5 V Pin assignments for the REMOTE connector are shown in Figure 2 9 and described in Table 2 3 You enable functions by ground closures TTL lows on specified pins Functions with overbars indicate an active low state WFM 1125 Option 0A 0B OC OD Service Manual Remote Operation Gr On OO 15 9 8 1 00000000 Figure 2 9 Pin assignments for the REMOTE connector Table 2 3 Remote connector pin assignments and functions Pin number Function Information 1 Line Field Option 0A 240M 274M format mode of Option OC or Interlace mode of Option OD Field is set to ON and line is set to OFF when TTL signal level goes from High to Low Field is set to OFF and line is set to ON when TTL signal level goes from Low to High Option 0B 296M format mode
14. The other is a register that holds the line number to be displayed When the line numbers match LINE SELECT permits the FIFO to write approximately 1 or 2 line data LINE SELECT may be used in Line Select or Lines mode the latter of which cannot display all the liens thus neglecting some of them For this reason the circuit contains a sequencer that automatically updates the line number to be displayed FIFO is a 16 bit wide 2K word FIFO circuit The Y_EVEN lt 9 0 gt Y_ODD lt 9 0 gt Pb lt 9 0 gt Pr lt 9 0 gt LINE_NUM lt 11 0 gt and LAST LINE signals are written into FIFO LAST_LINE indicates the last line of the current frame DOUBLER is the data output from FIFO The rate of Pb Pr is one half of that of Y This circuit doubles the quantity of Pb Pr data by interpolation TRANSCODER calculates G B and R using Y and the doubly interpolated Pb Pr data It can also output Y Pb and or Pr as they are This circuit consists of three GF9101 s manufactured by GENUM U260 processes G or Y U270 processes B or Pb U270 processes R or Pr Each of the ICs shape a 24 tap FIR filter and can vary up to 54 coefficients in real time For this device any data rate up to 18 6 MHz 37 25 MHz 2 is considered to be the real time WFM 1125 Option OA OB OC OD Service Manual Theory of Operation With the above features this device performs interpolation by a factor of 53 that by a factor of 23 and sampling by a factor of
15. Throughout this manual any replaceable component assembly or part of these waveform monitor is referred to generically as a module In general a module is an assembly like a circuit board rather than a component like a resistor or an integrated circuit Sometimes a single component is a module for example each chassis part of the waveform monitor is a module Symbols and terms related to safety appear in the Safety Summary found at the beginning of this document Besides the symbols related to safety this document uses the following symbols STOP The stop labels information which must be read in order to correctly do service and to avoid incorrectly using or applying service procedures The WFM 1125 Digital Television Waveform Monitor Option 0A 0B 0C OD come with the following manual WFM 1125 Option 0A 0B 0C User Manual Tektronix part number 071 0260 XX contains information for operation the WFM 1125 Digital Television Waveform Monitor Option 0A 0B OC OD WFM 1125 Option OA OB OC OD Service Manual Introduction Service Strategy Service Offerings Warranty Repair Service Repair or Calibration Service STOP Throughout this document any field replaceable component assembly or part of this waveform monitor is referred to generically as a module This document contains all the information needed for periodic maintenance of the WFM 1125 Digital Television Waveform Monitor Option OA 0B 0C 0D Examples o
16. 52 53 OFFSET OFFSET operates the UP DOWN counter through the pulse that is output from the rotary encode V POS knob on front panel The increase or decrease in the UP DOWN counter is read by the CPU The vertical position is changed by increasing or decreasing the selected GF9101 s digital offset ADDRESS GENERATOR The vertical data is obtained by selecting the data to be output out of the output data from the GF9101 Each time effective data is output from the GF9101 the horizontal data is obtained by incrementing the internal counter Digital sweep is implemented as follows each time one line display ends it is loaded to the value preset for the counter X RAM and Y RAM X RAM and Y RAM linearly convert the 15 bit wide data from ADDRESS GENERATOR into 9 bit data Each of them is a 9 bit wide 32K word RAM X RAM is for horizontal conversion and Y RAM for vertical conversion HISTOGRAM HISTOGRAM uses the X RAM and Y RAM outputs as the addresses It reads the data that indicated when the control signal indicating the effective data is enabled After adding 1 to that data HISTOGRAM writes the sum into the same address U450 and U460 constitute one pair and U480 and U490 the other Each of these RAMs can address a data rate against up to once for 4 clocks 37 125 MHz While one pair is in Addition mode the other is in Read mode The results are sent to the VARIABLE PERSISTENCE circuit Mode switching takes place when the last
17. 80009 2110941 W WASHER 6 211 0960 XX 3 SCREW MACHINE M4X10MM L FLH STLZNPL CROSS REC 80009 2110960 7 211 0829 XX 2 SCREW MACHINE M3X10MM L PNH STL MFZN C CROSS 80009 2110829 REC 8 213 1108 XX 4 SCREW MACHINE M4X35MM L PNH STL NIPL CROSS REC 80009 2131108XX 9 211 0871 XX 2 SCREW MACHINE M3X6MM PNH STL MFZN C CROSS 80009 2110871 REC W FLAT amp LOCK WASHER 10 211 0871 XX 41 SCREW MACHINE M3X6MM L PNH STL MFZN C CROSS 80009 2110871 REC W FLAT amp LOCK WASHER 11 211 0941 XX 2 SCREW MACHINE M3X6MM L FLH STL MFZN C CROSS REC 80009 2110941 W WASHER 12 220 0208 XX 2 NUT PLAIN HEX M3 X 7MM HEX SST 3 SHU 80009 2200208 13 220 0209 XX 4 NUT PLAIN HEX M4 ASSEM WA 80009 2200209 14 334 3379 XX 1 MARKER IDENT MARKED GROUND SYMBOLSAFETY 22670 ORDER BY DESC CONTROLLED 17 342 A139 XX 1 INSULATOR PLATE POLYCARBONATE 80009 342A139XX 18 333 4293 XX 1 PANEL REAR WFM1125 AL 80009 3334293 19 386 7107 XX 1 SUBPANEL FRONT AL 80009 3867107 20 441 2164 XX 1 CHASSIS ASSY WFM1125 AL 80009 4412164 21 407 4537 XX 1 BRACKET FRAME STL 80009 4074537 22 407 4538 XX 2 BRACKET CRT STL 80009 4074538 23 407 4539 XX 1 BRACKET PANEL STL 80009 4074539 24 426 2569 XX 1 FRAME FRONT WFM1125 POLYURETHANE 80009 4262569 25 343 1569 XX 2 CLAMP 80009 3431569 26 214 4796 XX 2 PIN LOCATING CKT BD BRASS 80009 2144796 27 342 1036 XX 1 INSULATOR PLATE CRT BD PC 80009 3421036 28 380 1119 XX 1 HOUSING F
18. 94p Refreshed 1 13 line rate of applied video sync 1080 24p 1080 23 98p 2 0 us div 0 1 us div MAG ON 720 60p 720 59 94p 3 0 us div 0 1 us div MAG ON 1080 24p 1080 23 98p Refreshed 1 17 line rate of applied video sync 720 60p 720 59 94p Refreshed 1 13 line rate of applied video sync 1080 24p 1080 23 98p Equal to the field rate of applied video sync Equal to the field rate of applied video sync Any positions of the synchronized video signal in all sweep modes except for Save and Display mode and Parade display mode Displays selected line in 1 LINE Display selected line first in 2 LINE lt 0 25 of full scale 45 pixel div Option 0A 48 566 pixel div Option OB Option 00 For Option 0 either of these resolutions is appllied depending on the mode selected in the FORMAT menu 1 6 WFM 1125 Option 0A 0B OC OD Service Manual Specifications Table 1 3 Serial digital video interface Characteristic Performance requirements Format Serial Input Impedance Monitor Output Level 800 mVp p 10 Impedance Reference information 1 4835 to 1 485 Gbps complying with BTA S004A SMAPTE 292M 75 Q Unbalanced 800 mVp p 10 75 Q Unbalanced Return Loss 15 dB at 5 MHz to 742 5 MHz 10 dB at 742 5 MHz to 1 5 GHz Table 1 4 Analog Output Characteristic Performance requirements Format DAC Resolution Impedance Sync Table 1 5 Stripped AES EBU digital a
19. BLACK R454 BRIGHT is turned clockwise to brighten the whole area of the CRT confirm that there are no chips or unevenness on the phosphor 4 Press the INTEN MENU button while holding down the lowest bezel button to enter into the DIAG CAL menu Yoke Alignment 5 Select EXECUTE DISPLAY WHITE from the menu a Adjust R15 H PHASE R452 H PHASE to center the bright video area in the background area b Loosen the screw retaining the deflecting yoke to place the CRT display horizontally This adjustment is not available for instruments with serial number J310171 and above Size And Linearity 6 Press the MENU button and then select GRID from the menu The grid pattern crosshatch pattern appears on the screen W Check the distortion of the external frame and the declination from the CRT face and the inclination about the grid pattern No specifications are required Align the horizontal and vertical positions in place using the centering ring behind the deflecting yoke With R43 V SIZE R352 V HEIGHT set the vertical size to 71 mm With R48 R353 adjust the linearity on the top and bottom area on the CRT face If necessary use R43 and the centering rings for readjustment With L4 WIDTH L403 WIDTH set the horizontal size to 95 mm If necessary use R43 R353 and the centering ring for readjustment NOTE The centering rings may cause some distortion to the displ
20. INPUT DAC 389 A845 XX WIRED CIRCUIT BD ASSY A20 MAIN 389 A900 XX WIRED CIRCUIT BD ASSY A30 FRONT PANEL 389 A857 XX WIRED CIRCUIT BD ASSY A40 CPU 389 A848 XX OPTION 0A CIRCUIT BD ASSY A40 CPU 389 A848 XX OPTION 0B CIRCUIT BD ASSY A40 CPU 389 A848 XX OPTION 0C CIRCUIT BD ASSY A40 CPU 389 A848 XX OPTION 0D CIRCUIT BD ASSY A60 DC DC 389 A697 XX WIRED CIRCUIT BD ASSY A15 RELAY amp SYNC 389 A847 XX WIRED CONVERTER HYBRID HD SDI RX MODULE I O LV CMOS BATTERY DRY LITHIUM 3V 650MAH POWER SUPPLY INPUT 85 264VAC OUTPUT 5VDC 20A FILTER RFI 3A 250VAC 50 60HZSAFETY CONTROLLED FAN TUBE AXIAL 12VDC 0 16A 1 92W 4610RPM 200MM L SWITCH ROCKER DPST 250VAC 3A W I O MKD CONN RF JACK BNC 500HM FEMALE STR SNAP IN PNL MTG 12 5MM MLG CRCE GASKET SHIELD 42CM L GASKET SHIELD CONN PLUG ELEC MALE W LOCKING ADAPTER MTG GASKET SHIELD WFM 1125 Option OA OB OC OD Service Manual Mfr Code 5403 80009 80009 TKOAU TK1499 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 54583 80009 80009 80009 80009 80009 80009 80009 Mfr Part Num ber CL211 0172 6 1291051XX 3460289XX ORDER BY DESC HW 047 2004397XX 3660792XX 348A134XX 2200209XX 6714602XX 6714605XX 6714603XX 6714604XX 6714754XX 6714755XX 6715008XX 6714292XX 6714601XX 1195744XX 1460093XX 1195745XX ZUB2203 00 1194361XX 2602700XX 1316383XX 3481302XX 3481626XX 1314131XX 3
21. VEE lt gt FD lt 7 1 gt 5 pi a 51 52 L 34 N2V U100 FD lt 23 1 gt 2 lt 3 HK1025TRB 26 rt SONY_WRTN HA FR SONY_RD BL Bee STOP_CLK lt ALOREGN Ba ee i 69 0 e SLOW_CLK 71 72 3 73 74 lt o cu Ge PES eru J CLK 37M ge le STOP DJ BESETA20 GND 7 6 29 Troubleshooting Analog outputs are correct Audio outputs are correct EXT REF is correct 6 30 No gt Y No gt No gt Replace A10 board Replace A10 or A15 board WFM 1125 Option 0A 0B OC OD Service Manual Options Options and Accessories Option 0A Description Option 0B Description Option 0C Description Option 0D Description Accessories Standard Accessories This section describes the options as well as the standard and optional accessories that are available for the waveform monitor This option supports the following system formats 1035 601 1035 59 941 1080 60i and 1080 59 941 This option supports the following system formats 720 60p and 720 59 94p This option supports the following system formats 1035 601 1035 59 94i 1080 60i 1080 59 94i 720 60p and 720 59 94p This option supports the following system formats 1035 601 1035 59 941 1080 60i 1080 59 94i 1080 50i 720 60 720 59 94p 1080 30sF 1080 29 97sF 1080 25sF 1080 24sF 1080 23 98sF 1080 24p and 1080 23 98p The waveform monitor comes standard with the accessories listed in Table 7 1
22. and the variable resistor on the Power Supply module See Figures 5 5 and 5 6 TP101 GND 40 CPU Board O U130 J100 0140 Front Y J120 J130 Y lt O i J140 O TP110 VCC Figure 5 5 A40 CPU board view and test points WFM 1125 Option Service Manual 5 11 Adjustment Procedures LOOOD ee OO SOCIOS oo ID OOOGO Oo m 000 OO OOO OO ID a OOO OO d OOO D Front LES OO OOODO O D OO ore 20000 OF O amp VR501 Figure 5 6 Power supply module view and VR501 Adjustment A WARNING To avoid serious injury do not touch exposed connections or components when operating the instrument with the protective enclosure removed Dangerous potentials exist at several points within the waveform monitor Initial Setups Oscilloscope Waveform CHI Vertical scale 200 mV div Vertical Offset 5V Vertical Position Center Horizontal Scale 1 us div Bandwidth 20 MHz WFM 1125 Option 0A 0B OC OD Service Manual Adjustment Procedures Procedure
23. format mode to interlace Press the SWEEP button to select 2LINE display On the TSG1001 front panel press the FORMAT button repeatedly to set the FORMAT to 274M 50Hz and confirm m The field rate display at the upper right of the screen changes to 501 Set the format mode to p progressive Press the SWEEP button to select 2LINE display On the TSG1001 front panel press the FORMAT button repeatedly to set the FORMAT to 296M 60Hz and confirm m The field rate display at the upper right of the screen changes to 60p WFM 1125 Option Service Manual 4 11 Performance Verification Analog output 4 12 8 On the TSG1001 front panel press the FORMAT button repeatedly to set the FORMAT to 274M 24p and confirm m The field rate display at the upper right of the screen changes to 24 9 Set the format mode to p sF segment frame 10 On the TSG1001 front panel press the FORMAT button repeatedly to set the FORMAT to 274M 24sF and confirm m The field rate display at the upper right of the screen changes to 24sF 11 Re download the multi dnl signal set file for the following tests This test confirms the amplitude and interchannel delay of the ANALOG OUT output The following equipment is required Equipment Required HDTV Signal Generator TSG1001 and PSC 1125 Oscilloscope Two parallel signal cables Three 75 BNC cables Two BNC T connectors Two 75 Q terminator
24. in the unused side to provide storage and improve appearance and air flow The drawer opens and closes freely unless latched for transport WFM 1125 Option 0A 0B OC OD Service Manual Electrical Parts List AAA E Electrical Parts List The modules that make up this instrument are often a combination of mechanical and electrical subparts Therefore all replaceable modules are listed in Section 10 Mechanical Parts List Refer to that section for part numbers when using this manual WFM 1125 Option 0A 0B 0C OD Service Manual 8 1 Electrical Parts List 8 2 WFM 1125 Option 0A 0B OC OD Service Manual Diagrams AAA Um Diagrams This contains the block diagram and the interconnection diagram for the WFM 1125 Digital Television Waveform Monitor Option 0A 0B 0C OD Symbols Graphic symbols and class designation letters are based on ANSI Standard Y32 2 1975 Abbreviations are based on ANSI Y1 1 1972 WFM 1125 Option 0A 0B 0C OD Service Manual 9 1 Diagrams Or W240 W270 W280 m 320 W260 W250 EXT REF Es pd e m oo Ot OR OT 16 Ot O t J190 3180 J400 J402 J442 J170 W100 20 So W230 99 ix 177 Heu N OE wie 77 A10 Input Board HK 202 OUT IC Relay 8 Sync Board W220 id 99 CHB A15 J230 So 177 W100 W110 40
25. the files to the Waveform Monitor m Resetting the Waveform Monitor m Performance Verification WFM 1125 Option 0A 0B 0C OD Service Manual 6 15 Firmware Updates Uncompressing the download files Downloading the files to the Waveform Monitor Do the following steps to uncompress the download files 1 2 3 Power up the PC If you use a Windows machine enter into the MS DOS prompt mode Select a destination directory If you want to install the files at a new directory create it Insert WFM1125 op 0C or op 0D Disk1 into the floppy disk drive on the PC Type A INST and then press Return key Doing so displays various messages and the uncompressing condition When the messages Please insert WFM1125 op 0C or op 0D Disk2 and Press any key to continue are displayed according to the messages insert the disk and press any key When the uncompressing process completes MS DOS prompt is displayed Remove WFM1125 op 0C or op 0D Disk 2 from the floppy disk drive on the PC Do the following steps to download the uncompressed files to the waveform monitor 1 Connect the RS 232C connector on the waveform monitor and the RS 232C connector on the PC using the RS 232C cable In the Waveform Monitor 2 Turn on power switch on the rear panel while holding down the STANDBY button on the front panel In the PC 3 Change directory where files were uncompressed if necessary Case 0 Option OD Type
26. this product may have different installation overvoltage category designations The installation categories are CAT Ill Distribution level mains usually permanently connected Equipment at this level is typically in a fixed industrial location CAT Il Local level mains wall sockets Equipment at this level includes appliances portable tools and similar products Equipment is usually cord connected CAT Secondary signal level or battery operated circuits of electronic equipment A measure of the contaminates that could occur in the environment around and within a product Typically the internal environment inside a product is considered to be the same as the external Products should be used only in the environment for which they are rated Pollution Degree 2 Normally only dry nonconductive pollution occurs Occasionally a temporary conductivity that is caused by condensation must be expected This location is a typical office home environment Temporary condensation occurs only when the product is out of service Test and measuring Class 1 as defined in IEC 1010 1 Annex H grounded product Overvoltage Category II as defined in IEC 1010 1 Annex J Pollution Degree 2 as defined in IEC 1010 1 Note Rated for indoor use only 3 For EMC compliance and safety use only high quality shielded cables and operate the instrument in one of the following Tektronix instrument enclosures 1700F00 Tektronix part number 437 01
27. us div Trigger mode EDGE Trigger source CHI Trigger level 140 mV Procedure 1 Align the 0 mV level of the signal with the center graticule on the oscillo scope Change the oscilloscope vertical offset to 700mV Verify and adjust the A10 R502 to align the 700 mV level with the center graticule on the oscilloscope Change the oscilloscope vertical offset to 0 V If the O mV level is within 0 5 divisions from the center graticule go to the next step If not so go back step 1 Change the oscilloscope waveform to CH1 off waveform to CH2 and vertical offset to 350 mV Align the 350 mV level of the signal with the center graticule on the oscilloscope Change the oscilloscope CH2 vertical offset to 350 mV Verify and adjust the A10 R522 to align the 350 mV level with the center graticule on the oscilloscope 10 Change the oscilloscope vertical offset 350 mV WFM 1125 Option Service Manual 5 7 Adjustment Procedures 5 8 11 12 13 14 15 16 17 18 19 20 If the 350 mV level is within 0 5 division from the center graticule go to the next step If not so go back step 7 Press the TIMING SIGNALS button on the TSG1001 front panel to set the TIMING SIGNALS to BOWTIE Change the oscilloscope settings to Waveform CH1 and CH2 Vertical scale 100 mV div for CH1 100 mV d
28. 00 04 1700F02 Tektronix part number 437 0018 07 1700F05 Tektronix part number 437 0095 04 1 16 WFM 1125 Option 0A 0B OC OD Service Manual Operating Information gg iii Operating Information This section is divided into the following three subsections m Preparation for Use Describes the installation environmental requirements information of how to power on or off etc m Using the Menu Describes the general menu operating information and DIAG CAL menu structure m Remote Control Describes the remote interfaces for servicing WFM 1125 Option OA OB OC OD Service Manual 2 1 Preparation for Use 2 2 WFM 1125 Option 0A 0B OC OD Service Manual Preparation for Use This subsection presents information you need to set up your WFM 1125 Digital Television Waveform Monitor Option 0A 0B OC OD This subsection contains the following information m Installation m Operating Environment m Applying and Interrupting Power m Repacking 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 Included Accessories The waveform monitor is shipped with several accessory items which may be required for normal use For more information on accessories refer to page 7 1 Hardware Installation Because
29. 1 0 us div MAG ON 1080 25sF 6 0 us div 1 2 us div MAG ON 1080 24sF 1080 23 98sF Refreshed 1 8 line rate of applied video sync 3 Lines 9 0 us div Refreshed 1 13 line rate of applied video sync Overlay 3 0 us div 0 1 us div MAG ON Refreshed 1 13 line rate of applied video sync 1 Field Equal to the field rate of applied video sync 2 Field Equal to the field rate of applied video sync 3 Field Equal to the field rate of applied video sync WFM 1125 Option 0A 0B 0C OD Service Manual 1 5 Specifications Table 1 2 Horizontal deflection system Cont Characteristic Performance requirements Option 0D Progressive mode 1 Line 2 Lines 3 Lines Overlay 1 Field 3 Field Horizontal Position Line Selection Cursor Error Scale Resolution Reference information 2 0 us div 0 1 us div MAG ON 720 60p 720 59 94p 3 0 us div 0 1 us 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 4 0 us div 0 5 us div MAG ON 720 60p 720 59 94p 6 0 us div 1 2 us div MAG ON 1080 24p 1080 23 98p Refreshed 1 11 line rate of applied video sync 720 60p 720 59 94p Refreshed 1 8 line rate of applied video sync 1080 24p 1080 23 98p 6 0 us div 720 60p 720 59 94p 9 0 us div 1080 24p 1080 23 98p Refreshed 1 17 line rate of applied video sync 720 60p 720 59
30. 10 Figure 6 3 A20 Main board view from top WFM 1125 Option 0A 0B 0C 0D Service Manual 6 27 Troubleshooting Y_EVEN Y_ODD PB and PR of A20J110 or J100 stacked in certain location See Figure 6 3 and 6 4 Ramp waveform Yes stepped Intense flicker Replace A20 board Replace A10 board Does frequency response differ from that of normal WFM in STATUS mode Frequency response abnormal For 90 or more replace A10 board For Replace A20 board 10 replace A20 d 6 28 WFM 1125 Option 0A 0B 0C OD Service Manual Troubleshooting Y EVEN 9 0 VCC J110 E gt 3 l 2 3 A 5 6 Y 8 Y ODD 9 0 g gt 2 l 2 3 4 5 6 7 PB 9 0 8 E 1 2 3 4 5 6 7 8 9 RELAY RE cD P3 3V f gt P1 2V xs Figure 6 4 J100 and J110 connector pin configurations CONFIG_ 10K 30 P3 3V P1 2V WFM 1125 Option 0A 0B 0C OD Service Manual PR 9 1 AI 2 1 2 HH 1 3 ES 5 2 7 a s 10 L 11 12 5 13 14 e gt 1S 16 L D_VD 17 18 3 FIFO WE u 1 CLK SEL 28 HA INE NUMN 1 NEWLINEN ze gt DERAME 37 38 GND LD SONY_RSTN 6 aT 20 5 43 44 45 46
31. 1125 the TSG1001 and PSC1125 50 750 attenuator 2 Minimumloss Tektronixpartmo Ot1 0057 01 Signal interconnection 750 terminator 2 Tekronxparno 011 0102 00 Signal interconnection BNC to BNC adaptor Signal interconnection BNC to BNC adaptor Signal interconnection BNC to SMA adaptor Signal interconnection BNC T connector 2 Tektronixparno 103 0030 00 Signal interconnection BNC cable lmpdaxe75Q Signal interconnection BNC cable 1 VGA monitor 1 VGA video cable 1 1 connector 4 2 Impedance 50 O Signal interconnection VGA OUTPUT signal test Connection between a VGA monitor and the VGA OUTPUT Custom see Figure 4 1 Remote function tests WFM 1125 Option 0A 0B OC OD Service Manual Performance Verification Table 4 1 Required equipment Cont Item Required precision Recommended equipment Purpose PC IBM PC compatible For downloading the signal set data to the TSG1001 Parallel interface cable Tektronix part no 174 2344 00 Connection between a PC and Supplied with the TSG1001 the TSG1001 Signal set floppy disk TSG1001 Signal Library Tektronix part no 063 2986 xx Signal set data to be down provided with the PSC 1125 loaded to the TSG1001 for tests The multi dnl signal set file is included TSG1001 Signal Library Tektronix part no 063 3286 xx Signal set data to be down provided with the PSC1125 MF1 loaded to the TSG1001 for the The multall dnl signal Set gr 040 1649 00 upg
32. 125 lines 1 line select display 750 lines 1 line display line select and H mag 2LH 24 2 line display and H mag 24 Hz field rate 2LH 50 2LH 60 2LH 750 2 line display and H mag 50 Hz field rate 2 line display and H mag 60 Hz field rate 2 line display and H mag 750 lines 2LSH 24 2LSH 50 2LSH 60 2LSH 750 2 line display line select and H mag 24 Hz field rate 2 line display line select and H mag 50 Hz field rate 2 line display line select and H mag 60 Hz field rate 2 line display line select and H mag 750 lines 3F 1125 WFM 1125 Option 0A 0B 0C OD Service Manual 3 field display 1125 lines 6 13 Firmware Updates Table 6 5 Floppy disk s file list Cont GF9101 coefficient files Type File name Descriptions 3F_750 3 fields disply 750 lines 3L 1125 3 lines display 1125 lines 3L 750 3 lines display 750 lines 3LS 1125 3 lines select display 1125 lines 3LS 750 3 lines display line select 750 lines VEC100X1 Vector display 10096 Color bar VEC100X5 Vector display 100 Color bar with 5x Gain VEC100XA Vector display 100 Color bar with 10x Gain VEC75X1 Vector display 75 Color bar VEC75X5 Vector display 75 Color bar with 5x Gain VEC75XA Vector display 75 Color bar with 10x Gain Loaded to A20U410 NORM1 Normal scale NORM5 Normal scale with 5x Gain NORM10 Normal scale with 10x Gain WIDE1 Wide scale WIDE5 Wide scale with 5x Gain WIDE10
33. 25 rear panel to the CH A connector on the waveform monitor rear panel WFM 1125 Option OA OB OC OD Service Manual 4 5 Performance Verification ier WFM1125 waveform monitor rear panel Parallel signal cable PSC1125 TSG1001 generator rear panel converter rear panel Parallel signal cable Figure 4 2 Performance test initial hookup 4 6 Initial Setups m TSG1001 FORMAT SMPTE 274M 60Hz for Option OA SMPTE 296M for Option OB SWEEP a5 ere heed 100 For Option OC and Option OD perform the following procedure using the format setting for Option OA and Option OB respectively m The Waveform Monitor Procedure 1 Press and hold the INTEN MENU button and select FACTORY EXECUTE OK 2 Press the DISPLAY CH 1 button and GAIN ON button and then x 10 bezel button align the sweep waveform with the graticule 3 Confirm that the amplitude of the sweep waveform is in the range from 696 5 to 703 5 mV and that the accuracy falls within the 0 5 4 Press X 1 bezel button 5 Press the DISPLAY CH 2 button and X 10 bezel button align the marker of the sweep waveform with the graticule 6 Confirm that the amplitude of the sweep waveform is in the range from 695 1 to 704 9 mV and that the accuracy falls within the 0 7 7 Press X 1 bezel button WFM 1125 Option OA
34. 48A134XX 10 5 Mechanical Parts List Replaceable Parts List Cont Fig amp Index Num Tektronix Serial No Serial No Mfr Mfr Part Num ber Part Number Effective Discontd Qty amp Description Code ber 59 119 5994 XX CRT Unit 80009 1195994 1 CIRCUIT BD ASSY A5 DISPLAY 1 CRT 1 DEFLECTION YOKE 60 276 A017 XX 1 CORE EM FERRITE 80009 276 017 61 348 A116 XX 68 GASKET SHIELD 80009 348A116XX CM 10 6 WFM 1125 Option 0A 0B 0C OD Service Manual A15 RELAY SYNC 49 on A40 CPU board E RM H K 2 02 lt gt A10 INPUT OF DC DC A20 MAIN One FRONT PANEL Figure 10 1 WFM 1125 Digital Television Waveform Monitor Option 0A 0B 0C 0D exploded view WFM 1125 Option 0A 0B 0C OD Service Manual 10 7 Please cut away this area below the lines 10 8 WFM 1125 Option 0A 0B 0C OD Service Manual Please cut away this area below the lines Mechanical Parts List Component Tektronix Serial No Effective Name amp Description Number Part No Dscont CABLE ASSEMBLIES W000 174 4026 XX CABLE ASSY RF 75 OHM COAX RG179 10CM L W210 174 4025 XX CABLE ASSY RF 75 OHM COAX RG179 10CM L BNC W220 174 4029 XX CABLE ASSY RF 75 OHM COAX RG179 10CM L BNC W230 174 4029 XX CABLE ASSY RF 75 OHM COAX RG179 10CM L BNC W240 174 4029 XX CABLE ASSY RF 75 OHM COAX RG179 10CM L BNC W250 174 4029 XX CABLE ASSY RF 75 OHM COAX RG179 10CM L BNC
35. 5 rear panel Parallel signal cable 75 Q terminator 75 Q BNC cable Figure 4 5 External reference test initial hookup 4 18 WFM 1125 Option 0A 0B OC OD Service Manual Performance Verification Initial Setups m TSG1001 FORMAT SMPTE 274M 60Hz for Option OA SMPTE 296M for Option OB SWEEP u 100 1 Press the REF EXT button on the waveform monitor front panel to set the reference mode to external 2 Confirm that the field rate readout at the right upper corner on the screen indicates 60 00 Hz 3 Disconnect the BNC cable from the ANALOG OUT Y output on the waveform monitor rear panel and then connect it to the BLACK output on the NTSC TV generator rear panel 4 Press and hold the INTEN MENU button on the waveform monitor front panel to display the Configure menu and then select EXT REFERENCE NTSC from the menu 5 Confirm that the field rate readout at the right upper corner on the screen indicates 59 94 Hz and the waveform is not locked Remote functions This test confirms that the remote operation is functioning correctly The following equipment is required Equipment Required HDTV signal generator TSG1001 and PSC 1125 Two parallel signal cables 75 Q BNC cable Ground closer with 15 pin D type connector Connections Refer to Figure 4 6 for connections Using the cables supplied with the PSC1125 co
36. 5 2 BNC cable connect the OUTI connector on the PSC1125 rear panel to the CH A connector on the waveform monitor rear panel Connect AUDIO CHA connector on the waveform monitor rear panel to the oscilloscope CHI input using the 75 Q BNC cable and the BNC T connector WFM 1125 Option Service Manual 4 15 Performance Verification Terminate the other side of BNC T connector with the 75 Q terminator TDS540B BNC T connector and 75 Q terminator O 0 c 0 EE 0 5 0 OP oo CH1 75 Q BNC cable Parallel signal cable PSC1125 TSG1001 generator rear panel converter rear panel 75 Q BNC cable Hi WFM1125 waveform monitor rear panel Parallel signal cable Figure 4 4 Audio output test initial hookup Initial Setups m TSGI001 FORMAT SMPTE 274M 60Hz for Option OA SMPTE 296M for Option 0B m The Waveform Monitor m Oscilloscope Waveform CHI Vertical scale 200 mV div Vertical offset OV Vertical position Center Horizontal scale 100 ns div Trigger mode EDGE 4 16 WFM 1125 Option 0A 0B OC OD Service Manual Performance Verification Trigger source CHI Trigger level 140 m
37. 5k0 lt 5ns Reference information RS 170A PAL 2 LEVEL mode of Option 0D SMPTE 240M SMPTE 274M SMPTE 296M 3 LEVEL mode of Option 0D SMPTE 240M SMPTE 274M Option 0A or 240M 274M format mode of Option 0C SMPTE 296M Option 0B or 296M format mode of Option 0C Unterminated gt 30 dB to 30 MHz 2 clock 27 ns Characteristic Performance requirements Reference information Display Contents 240M When 240M in the COLOR menu is selected 274M When 274M in the COLOR menu is selected or 1080 24p format signal is inputted 296M When 720 60p or 720 59 94p fomat signal is inputted 1 8 WFM 1125 Option 0A 0B 0C OD Service Manual Specifications Table 1 8 Field rate display Characteristic Performance requirements Target Signal Display Contents 60 00 Hz 59 94 Hz 22 27 Hz Display Contents Interlace mode of Reference information Selected Reference Signal Internal Detected Field Rate 59 97 Hz to 60 03 Hz 59 91 Hz to 59 97 Hz gt 60 03 Hz or lt 59 91 Hz Display Missing Reference Internal Detected Field Rate Option 0D 60i 59 97 Hz to 60 03 Hz 59 94i 59 91 Hz to 59 97 Hz 50i 48 024 Hz to 59 91 Hz 22 22 Unknown field late Display Missing Reference Display Contents Segment Frame mode of Option 0D 30sF 29 97sF 25sF 24sF 23 98sF 22 29 Display Contents Progressive mode of Option 0D 60p 59 94p 24p 23 98p 22 22 Internal Detected Field Ra
38. AIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES 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 Calibration Services provide annual calibration of your product standards compliance and required audit documentation recall assurance and reminder notification of scheduled calibration Coverage begins upon registration you may purchase up to five years of Calibration Services Service Assurance Advantages W Priced well below the cost of a single repair or calibration W Avoid delays for service by eliminating the need for separate purchase authorizations from your company m Eliminates unexpected service expenses For Information and Ordering For more information or to order Service Assurance contact your Tektronix representative and provide the information below Service Assurance may not be available in locations outside the Unite
39. AN AL 80009 3801119 29 260 2701 XX 3 SWITCH ROTARY ENCODER 5VDC INCREMENTAL W CONN 80009 2602701 30 200 4396 XX 1 COVER CHASSIS AIR FLOW PC 80009 2004396 31 333 4294 XX 1 PANEL FRONT WFM1125 PC 80009 3334294 32 378 0447 XX 1 FILTER CRT ACRYLIC 80009 3780447 10 4 WFM 1125 Option 0A 0B OC OD Service Manual Mechanical Parts List Replaceable Parts List Cont Fig amp Index Num Tektronix ber Part Number 33 129 1250 XX 34 129 1051 XX 35 346 0289 XX 36 348 1048 XX 37 343 0549 XX 38 200 4397 XX 39 366 0792 XX 40 348 A134 XX 41 220 0209 XX 42 671 4602 XX 671 B100 XX 43 671 4605 XX 44 671 4603 XX 45 671 4604 XX 671 4754 XX 671 4755 XX 671 5008 XX 46 671 4292 XX 47 671 4601 XX 48 119 5744 XX 119 B073 XX 49 146 0093 XX 50 119 5745 XX 51 119 1536 XX 52 119 4361 XX 53 260 2700 XX 54 131 6383 XX 55 348 1302 XX 56 348 1626 XX 57 131 4131 XX 58 348 A134 XX Serial No Effective J340101 J340101 Serial No Discont d J330XXX J330XXX J330XXX Qty 4 2 o m 43 5 CM 1 1 1 1 1 43 5 CM Name amp Description SPACER POST 12 5MM L M2 6 STL 4 8MM HEX SPACER POST 4 8MM L 4 40INT 4 40EXT STL 4 8MM HEX W WASHER STRAP TIEDOWN 4 8 MM X 292 MM L 66 NYLON PAD CUSHIONING 150MM X 12MM X 13MM SYNTH RBR STRAP TIEDOWN 1 6 19MM DIA 66NYLON CAP GRAY 15MM CAP KNOB GRAY 15MM 6MM GASKET SHIELD NUT PLAIN HEX M4 ASSEM WA CIRCUIT BD ASSY A10
40. C OD Service Manual Specifications Table 1 12 Bowtie mode Characteristic Performance requirements Reference information Common Mode Rejection Ratio Amplitude Error Internal Timing Match Table 1 13 Status display mode Reference information 4000 words HEX and DEC Characteristic Performance requirements Display Capability Format Table 1 14 Save and display mode Characteristic Performance requirements Reference information Delay Time from time of button pushed lt 3 frames Length of Reference Memories 1 frame Table 1 15 Warning display Characteristic Performance requirements Reference information CRC Error LED LED lights for 0 5 seconds at error detected CRC Error Count CRC error count elapsed time in this mode and the time of latest error detected are displayed Resolution 10 ms GAMUT Error LED lights for 10 milliseconds at error detected Error check timing is made at the same time as the waveform is displayed Warning is derived from input data Error Detection Level Positive Negative 735 mV 7 mV 105 of legal RGB Nom 35 mV 7 mV WFM 1125 Option 0A 0B 0C OD Service Manual Specifications Table 1 16 Calculation dynamic range Characteristic Performance requirements Resolution Mode D Range Mode Reference information With 10 bit calculation Y G B 50 to 760 mV 390to 390 mV Waveform may have some d
41. C OD Service Manual 6 23 Troubleshooting Positive terminal of C100 Negative terminal of C120 Positive terminal of C130 Figure 6 2 A60 DC DC board view from top 6 24 WFM 1125 Option 0A 0B OC OD Service Manual Troubleshooting Can Version No be read Replace A40 CPU board Output with CONFIG Retry download ERR Connect to external Replace A20 board monitor Graticules displayed OK Replace A5 board Replace A20 board Replace A40 CPU board Retry download Give up WFM 1125 Option 0A 0B 0C OD Service Manual 6 25 Troubleshooting A20 U110 2 at 37 125 MHz See Figure 6 3 No SIGNAL is displayed Remove W000 and Connect CHA to input of HK 102 HK 202 directly Replace A20 board A20 U110 2 at 37 125 MHz See Figure 6 3 Replace A10 board 6 26 Yes Replace A15 board WFM 1125 Option 0A 0B OC OD Service Manual Troubleshooting gm NM 2 nmm E uw ha man a tind visa C feat Cm T IN AR LN 1 ee B Tas U110 2 U110 2nd pin J100 J1
42. Es 140 J130 J100 110 W810 J840 A20 Main Board J700 J820 J390 W700 eo CRT A30 Front Panel Board A5 DISPLAY Board J2 e CRT Anode Noise Filter 8 W014 W840 A60 DC DC Board W030 Figure 9 1 Interconnections 9 2 WFM 1125 Option 0A 0B OC OD Service Manual Diagrams EXT REF A15 Relay amp Sync Board D A D A D A SYNC SEPARATOR DEMUX ais CHANNEL SELECTOR CHA INPUT CHB INPUT A10 Input Board MONITOR OUTPUT A40 CPU Board CPU ROM FLASH ROM RS 232 C U100 U140 U170 U180 U190 U200 RAM DECODER A20 U150 U160 U130 BUFFER REMOTE EXTERNAL VGA OUTPUT amp Main Board See Figure 9 3 for more detail AC Yoke Power Suppl Front Panel Board A5 DISPLAY Board ppy Power Switch Front Panel ot CRT u Switches Front Panel A LEDS Noise Filter A60 DC DC Board Figure 9 2 Block diagram WFM 1125 Option 0A 0B 0C OD Service Manual 9 3 Diagrams LINE SELECT U100 OFFSET U250 FIFO TRANSCODER INTERPOLATE U150 U170 DOUBLER 0200 U260 U270 U280 U186 U189 U155 U175 J100 and J110 CONTROLLER U350 Y RAM ADDRESS PERSIS
43. Figure 5 1 Rear view of the waveform monitor in an enclosure 5 2 WFM 1125 Option 0A 0B OC OD Service Manual Adjustment Procedures un gt o u e c 2 Box CE O lg E 3 M 8 25 OC m oM zo 3 I Oo T o Boer dr a m gt gt gt gt e E E E e Gi Q ux wo st WE gt 04 amp je E a elle le ollo ol Figure 5 2 5 display board view from top of the waveform monitor zy Mn gt 8 E lt x e x E lt 2 8 o d E x m o gt gt T c S sg 8 N a c D I 69 e E E Y El ES Figure 5 3 A5 display board view from top of the waveform monitor J310171 and above Adjustment WARNING To avoid serious injury do not touch exposed connections or components when operating the instrument with the protective enclosure removed Dangerous potentials exist at several points within the waveform monitor WFM 1125 Option 0A 0B 0C 0D Service Manual 5 3 Adjustment Procedures 5 4 NOTE Use the variable resistors described in the parenthesis for the instrument with serial number J310171 and above 3 Connect the power cord and turn on the power switch on the rear panel m When R64
44. Horizontal scale 10 us div Trigger mode EDGE Trigger source CHI WFM 1125 Option OA OB OC OD Service Manual 4 13 Performance Verification Trigger level 140 mV Procedure 1 Align the 0 mV level of the signal with the center graticule on the oscillo scope 2 Change the oscilloscope vertical offset to 700mV 3 Confirm the signal level is 700 mV 7 mV 4 Change the oscilloscope waveform to CH1 off waveform to CH2 and vertical offset to 350 mV 5 Align the 350 mV level of the signal with the center graticule on the oscilloscope 6 Change the oscilloscope vertical offset to 350 mV 7 Confirm the signal level is 350 mV 7 mV 8 Press the TIMING SIGNALS button on the TSG1001 front panel to set the TIMING SIGNALS to BOWTIE 9 Change the oscilloscope settings to Waveform CHI and CH2 Vertical scale 100 mV div for CH1 100 mV div for CH2 Vertical offset 0 V for CH1 and CH2 Horizontal scale 1 us div Record length 5000 points 10 Press the MATH REF button on the oscilloscope front panel and then press the main and side menu buttons in the following order to create a Math waveform Change Math waveform definition Dual Wfm Math Set 1st Source to Ch1 Set operator to Set 2nd Source to Ch2 11 Change the oscilloscope settings to Waveform CH1
45. LDs X RAM and Y RAM 8 9 Select LED again and confirm that all the LEDs go off Press the DIAG bezel button Select MEMORY from the menu to run the following memory tests m ROM checksum m RAM R W test m FLASH MEMORY R W test this takes about 6 minutes NOTE Do not power off the waveform monitor until this test is complete Doing so would lost the files in the memory and you have to reload them again 10 11 12 13 14 m register R W test Confirm that the PASS is displayed in all the memory tests If error is detected the FAIL is displayed together with error information on the screen Press INTEN MENU button on the front panel Select PLD from the menu to run the following PLD tests m 10K30 configuration test m 10K10 configuration test m SK configuration test Confirm that the PASS is displayed in all the PLD tests If error is detected the FAIL is displayed together with error information on the screen Press INTEN MENU button on the front panel Select X Y RAM from the menu to run the following tests m Overlay RAM R W test m X Y RAM data bus test m X Y RAM memory cell test m X Y RAM address bus test Confirm that the PASS is displayed in all the tests If error is detected the FAIL is displayed together with error information on the screen Press INTEN MENU button on the front panel WFM 1125 Option 0A 0B OC OD Service Manual Troubleshooting HK 102 HK 202 and FIF
46. O execute the following test you must input any signal that includes and SAV into those module through the CH A or CH B connector on the rear panel 15 Connect a signal to the CH A or CH B connector on the rear panel 16 Select HK102 HK202 FIFO from the menu to run the following test m HK 102 HK 202 and FIFO functional test Confirm that the PASS is displayed in this test If error is detected the FAIL is displayed together with error information on the screen 17 Press INTEN MENU button on the front panel 18 Press STANDBY button twice to exit from the DIAG CAL menu WFM 1125 Option OA OB OC OD Service Manual 6 21 Troubleshooting Turn on the power CRT non luminous LEDs non luminous Replace Power Supply Replace Fan CRT full white display To A page 6 23 Y Graticules No e displayed 5 6 25 No waveform No To C page 6 26 displayed Low quality of Yes waveform displayed To D page 6 28 To E page 6 30 6 22 WFM 1125 Option 0A 0B OC OD Service Manual Troubleshooting Positive terminal of A60 C100 at 12 5 0 5 V See Figure 6 2 Negative terminal of A60 C120 at 15 1 V See Figure 6 2 Positive terminal of A60 C130 at 5 0 5 V See Figure 6 2 No gt Replace A60 board Replace A5 board WFM 1125 Option 0A 0B 0
47. OB OC OD Service Manual Performance Verification 10 11 Press the DISPLAY CH 3 button and X 10 bezel button align the marker of the sweep waveform with the graticule Press X 1 bezel button Confirm that the amplitude of the sweep waveform is in the range from 695 1 to 704 9 mV and that the accuracy falls within the 0 7 Press X 1 bezel button Low pass filter This test confirms that the low pass filter operation is functioning correctly Use the test hookup and equipment controls from the previous test 1 2 3 Press and hold the INTEN MENU button and select FILTER LPF Press the INTEN MENU button again to clear the menu from the screen Press the DISPLAY CH1 and confirm the 4 th marker amplitude is equal to or less than 221 mV Press the DISPLAY CH2 and confirm the 7 th marker amplitude is equal to or less than 221 mV Press the DISPLAY CH3 and confirm the 7 th marker amplitude is equal to or less than 221 mV Press and hold the INTEN MENU button on the front panel and select FILTER FLAT and then press the INTEN MENU button again Front panel controls This test confirms that the front panel controls are functioning correctly Use the test hookup and equipment controls from the previous test 1 On the TSG1001 front panel press the COLOR BARS button to set the COLOR BARS to 75 Press the DISPLAY CH1 and confirm m The 1 LED lights m Y signal is currently displayed Press th
48. OR 80009 0633250XX PTION 0D 10 10 WFM 1125 Option 0A 0B OC OD Service Manual
49. OT DIVISION 1200 COLUMBIA AVE 3151 JAY ST 6701 CLINTON RD 111 INDUSTRIAL RD 11013 A NE 39TH 14150 SW KARL BRAUN DR PO BOX 500 747 W REDONDO BEACH PO BOX 10 456 SEASTROM STREET 72 VERONICA AVE UNIT 4 4300 S RACINE AVE 3000 LEWIS amp CLARK HWY SUITE2 2682 W COYLE AVENUE 14181 SW MILLIKAN WAY 6160 SW ARTIC DRIVE WFM 1125 Option OA OB OC OD Service Manual City State Zip Code CHATSWORTH CA 91311 SPRINGFIELD NJ 07081 VANCOUVER WA 98666 6008 PORTLAND OR 97214 HILLSBORO OR 97124 6474 BURBANK CA 91505 1015 BELLEFONTE PA 16823 RIVERSIDE CA 92507 2114 SANTA CLARA CA 95054 ROCKFORD IL 61111 3863 COLD SPRING KY 41076 9749 VANCOUVER WA 98662 BEAVERTON OR 97077 0001 GARDENA CA 90247 4203 TWIN FALLS ID 83301 SUMMERSET NJ 08873 CHICAGO IL 60609 3320 VANCOUVER WA 98661 ELK GROVE VILLAGE IL 60007 BEAVERTON OR 97077 BEAVERTON OR 97005 10 3 Mechanical Parts List Replaceable Parts List Fig amp Index Num Tektronix Serial No Serial No Mfr Mfr Part Num ber Part Number Effective Discontd Qty Name amp Description Code ber 10 1 1 200 4018 XX 1 GUARD FAN STL NI PL 80009 2004018 2 366 1591 XX 23 PUSH BUTTON DOVE GRAY ABS 80009 3661591 3 211 0720 XX 2 SCREW MACHINE 6 32 X 0 50 PNH STL TORX T 15 WITH OKBO1 2110720XX SLOT 4 129 1490 XX 2 SPACER POST 12 0MM L M3 THRU STL ZN C PL 5 5MM HEX 80009 1291490XX 5 211 0941 XX 4 SCREW MACHINE M3X6MM L FLH STL MFZN C CROSS REC
50. R ERE RS 232 Connector sn an re E eS false Remote Connector yau eR MUN pa eR Ene EN Theory of Operation 15 Relay amp Sync board 11 0 eee eee ATO Input board RENDER RES NLIS A20 Maim board cue howd aes Rear ett aes TR et een AAO CPUsDOard scenic hice et reo ONE ied ae yaaa iyuq E A30 Eront Panel boardi serite A a en es UN A60 DC3DC board u ana a Si eet ale eet u RECS Power Supply u sss seus gu as sas ee NER DELE UE ot gue AS DISPLAY board CUERO ai te Rr ORE E S rt dette n awan uama Nf WFM 1125 Option 0A 0B 0C OD Service Manual 1 14 1 15 1 15 2 1 2 3 2 3 2 9 2 10 2 11 2 12 2 12 2 13 2 13 2 13 2 14 2 17 2 17 2 18 T E PP PP Un Un Un Un Table of Contents Performance Verification Adjustment Procedure Maintenance Options Electrical Parts List Diagrams Mechanical Parts List Performance Verification 4 1 Before Running the Performance Tests 4 2 Required Equipments 0 0 ccc cee eet ne 4 2 Performance Tests ys yapuspa 4 4 Adjustment 5 1 Requirements for Performance 5 1 Equipment Required suis eee eee eh 5 1 Display Adjustment RII 5 2 O
51. Service Manual SONY Tektronix WFM 1125 Digital Television Waveform Monitor Option 0A 0B 0C 0D 071 0455 04 Warning The servicing instructions are for use by qualified personnel only To avoid personal injury do not perform any servicing unless you are qualified to do so Refer to all safety summaries prior to performing service www tektronix com Copyright O Sony Tektronix Corporation All rights reserved Copyright O Tektronix Inc All rights reserved Tektronix products are covered by U S and foreign patents issued and pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved Printed in Japan Sony Tektronix Corporation P O Box 5209 Tokyo Int l Tokyo 100 31 Japan Tektronix Inc P O Box 1000 Wilsonville OR 97070 1000 TEKTRONIX and TEK are registered trademarks of Tektronix Inc 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 In order to obtain service under this warranty Customer must notify Tektronix of the defect before the expiration of the warranty per
52. TENCE GENERATOR U500 U510 U520 U430 X RAM U425 65 05 ADDER INTERNAL VGA U530 U565 U570 U575 U650 m U585 U555 U550 U600 EXTERNAL VGA 0700 J450 Figure 9 3 A20 Main board block diagram 9 4 WFM 1125 Option 0A 0B 0C 0D Service Manual Mechanical Parts List Mechanical Parts List This section contains a list of the replaceable modules for the WFM 1125 Digital Television Waveform Monitor Option 0A 0B OC OD Use this list to identify and order replacement parts Parts Ordering Information Replacement parts are available through your local Tektronix field office or representative Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest circuit improvements Therefore when ordering parts it is important to include the following information in your order m Part number m Instrument type or model number m Instrument serial number m Instrument modification number if applicable If you order a part that has been replaced with a different or improved part your local Tektronix field office or representative will contact you concerning any change in part number Module Servicing Modules can be serviced by selecting one of the following three options Contact your local Tektronix service center or representative for repair assistance Module Exchange In some cases you may exchange your module for a reman ufacture
53. V Procedure 1 10 11 12 13 Align the 0 mV level of the displayed signal with the center graticule on the oscilloscope Using the oscilloscope measurement function perform the amplitude measurement and confirm that the amplitude is 1000 mV 100 mV Using the oscilloscope measurement function perform the rise and fall time measurements confirm that the rise and fall times are within the range from 30 ns to 44 ns Change the BNC cable from the AUDIO CHA connector to the AUDIO CHB connector Repeat steps from 1 to 3 Disconnect BNC cable the BNC T connector and the 75 Q terminator from the AUDIO CHB connector on the waveform monitor connector on the oscilloscope Change the connections to as follows a Connect the AUDIO CHA and AUDIO CHB outputs from the waveform monitor rear panel to the digital audio monitor CH1 2 AUDIO and CH3 4 AUDIO BNC inputs respectively using the 75 9 BNC cables b Terminate the other side of the loop through to the CH1 2 AUDIO and CH3 4 AUDIO input with the 75 Q terminators On the digital audio monitor front panel press MENU button to display the menu Select Inputs items from the menu and select CH1 2 input BNC unbal anced and CH3 4 input BNC unbalanced items from the submenu On the digital audio monitor front panel press the CLEAR MENU button to clear the menu On the digital audio monitor front panel press the VIEW AUDIO butt
54. W260 174 3852 XX CA ASSY RF 50 OHM COAX 300MM L GRAY W270 174 4027 XX CABLE ASSY RF 75 OHM COAX 20CM L BLACK W280 174 4027 XX CABLE ASSY RF 75 OHM COAX 20CM L BLACK W300 174 4028 XX CABLE ASSY RF 75 OHM COAX 20CM L BLACK W310 174 4028 XX CABLE ASSY RF 75 OHM COAX 20CM L BLACK W320 174 4028 XX CABLE ASSY RF 75 OHM COAX 20CM L BLACK W820 174 3858 XX CA ASSY SP ELEC 26 28AWG 10CM L F LAT kk For cable interconnections see Figure 9 1 WFM 1125 Option 0A 0B 0C OD Service Manual Mfr Code Mfr Part No 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 80009 1744026XX 1744025XX 1744029XX 1744029XX 1744029XX 1744029XX 1743852XX 1744027XX 1744027XX 1744028XX 1744028XX 1744028XX 1743858XX 10 9 Mechanical Parts List Fig amp Tektronix Serial No Effective Qty 12345 Name amp Description Mfr Mfr Part No Index No Part No Dscont Code STANDARD ACCESSORIES 071 0260 XX 1 MANUAL TECH USER 80009 0710260XX 161 0216 XX 1 CABLE ASSY PWR 3 18 AWG 2 5M L BLACK 80126 C7120 25M BL STANDARD ONLY OPTIONAL ACCESSORIES 200 3897 XX 1 FRONT PANEL COVER 80009 2003897XX 1 PLAIN CASE 1700F00 1 PTD CASE ASSY 1700F02 1 RACK ADAPTER SIDE BY SIDE 1700F05 1 FILLER PANEL 1700F06 1 DRAWER UTILITY 1700F07 FOR JUST SERVICING 071 0455 XX 1 MANUAL TECH SERVICE 80009 0710455XX 063 3174 XX A 3 5 DISK WFM1125 LOAD MODULE ARCHIVES FOR 80009 0633174XX OPTION 0A 0B 0C 063 3250 XX A An LOAD MODULE ARCHIVES F
55. Wide scale with 10x Gain VEC100Y1 Vector display 100 Color bar VEC100Y5 Vector display 100 Color bar with 5x Gain VEC100YA Vector display 100 Color bar with 10x Gain VEC75Y1 Vector display 75 Color bar VEC75Y5 Vector display 75 Color bar with 5x Gain VEC75YA Vector display 75 Color bar with 10x Gain A20U260 A20U270 and A20U280 digital filter coefficients For every mode there are two types of files available files for Y and those for Pb Pr Examples FLY_Y_RE TXT FL_C_RE TXT Note that if MENU gt WFM VECT gt as RGB or GBR has been selected files for Y are used for the three GF9101 s MENU gt Interpo gt ON MENU gt Filter gt Flat WFM 1125 Option 0A 0B OC OD Service Manual Firmware Updates Table 6 5 Floppy disk s file list Cont Type File name Descriptions FL LLTXT Non field mode in Line Select mode FL HM TXT When HMag is displayed in response to the pressing of the Horizontal Mag button except in the Line Select mode FL RE TXT Other than above MENU gt Interpo gt ON MENU gt Filter gt LPF LP LI TXT Non field mode in Line Select mode LP HM TXT When HMag is displayed in response to the pressing of the Horizontal Mag button except in the Line Select mode LP RETXT Other than above ULP Y RE TXT For Diamond display Update Procedure Update procedures compose of four main processes m Uncompressing the download files m Downloading
56. a status data output and factory servicing The REMOTE connector provides a way to load or save presets RS 232C Connector The RS 232C connector is a 9 pin D type connector that provides a status data output and a remote verification interface Figure 2 8 shows the pin assignments and the communication parameters for the RS 232C interface Communication parameters Baud 9600 pbs Power cycle always reset to 9600 pbs From 300 to 115200 bps can be set while communicating Data bits 8 unselectable Stop bits 1 unselectable Parity None unselectable Flow control Hard flagging unselectable Pin Number Data Connection Required 1 DCD Received line signal detector 2 RXD Received data Y 3 TXD Transmitted data vr 4 DTR DTE ready 5 Signal ground Y 6 DCR DCE ready 7 RTS Request to send Y 8 CTS Clear to send Y 9 Not connected Figure 2 8 Pin assignments for the RS 232C connector WFM 1125 Option 0A 0B 0C OD Service Manual 2 17 Remote Operation RS 232C Remote Command Remote Connector The following remote command can be sent through the RS 232C connector 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 The data output format is CSV The following is an output example Line_number 0041 SMPL Y
57. able modules by part number WFM 1125 Option OA OB OC OD Service Manual 6 1 Maintenance Preparation A A Preventing ESD Susceptibility to ESD Before servicing this product read the Safety Summary and Introduction at the front of the manual and the ESD information below WARNING To avoid electrical shock disconnect the instrument from the AC power supply before removing the cabinet or replacing any components CAUTION Static discharge can damage any semiconductor component in this instrument When performing any service which requires internal access to the waveform monitor adhere to the following precautions to avoid damaging internal modules and their components due to electrostatic discharge ESD 1 Minimize handling of static sensitive modules 2 Transport and store static sensitive modules in their static protected containers or on a metal rail Label any package that contains static sensitive modules 3 Discharge the static voltage from your body by wearing a grounded antistatic wrist strap while handling these modules Do service of static sensitive modules only at a static free work station 4 Nothing capable of generating or holding a static charge should be allowed on the work station surface 5 Handle circuit boards by the edges when possible 6 Do not slide the modules over any surface 7 Avoid handling modules in areas that have a floor or work surface covering capable of gene
58. aking cases Corroded solder on leads or terminals Loosely inserted in sockets Distorted pins Remove damaged module and replace with a fresh module from the factory Firmly seat loose semiconduc tors Remove devices that have distorted pins Carefully straight en pins as required to fit the socket using long nose pliers and reinsert firmly Ensure that Straightening action does not crack pins causing them to break off WFM 1125 Option 0A 0B 0C OD Service Manual Maintenance Table 6 3 Internal Inspection check list Cont Item Inspect for Repair action Wiring and cables Loose plugs or connectors Firmly seat connectors Repair or Burned broken or frayed wiring replace modules with defective wires or cables Chassis Dents deformations and dam Straighten repair or replace aged hardware defective hardware Cleaning Procedure Interior To clean the waveform monitor interior do the following steps 1 2 Blow off dust with dry low pressure deionized air approximately 9 psi Remove any remaining dust with a lint free cloth dampened in isopropyl alcohol 75 solution and rinse with warm deionized water A cotton tipped applicator is useful for cleaning in narrow spaces and on circuit boards STOP If after doing steps 1 and 2 a module is clean upon inspection skip the remaining steps If steps 1 and 2 do not remove all the dust or dirt the instrument may be s
59. and CH2 to Off ZOOM raus On Vertical scale 100 mV div 5 0 X Vert for Mathl Horizontal scale 5 us div 0 2X Horz 4 14 WFM 1125 Option OA OB OC OD Service Manual Performance Verification 12 Observe the Bowtie display on the oscilloscope and confirm the skew is within 3 ns the marker on the display indicates 1 ns 13 Change the oscilloscope zoom setting to off 14 On the TSG1001 front panel press the COLOR BARS button to set the COLOR BAR to 100 15 Change the BNC cable from ANALOG OUT Py connector to ANALOG OUT P connector 16 Change the oscilloscope settings to Waveform MATHI to off and CH2 to on Vertical scale 10 mV div Vertical offset 350 mV 17 Repeat steps from 5 to 12 Audio output This test confirms the amplitude rise time and fall time of the AUDIO output This test can be skipped in case of Option 0B or 296M format mode of Option 0 The following equipment is required Equipment Required HDTV Signal Generator TSG1001 and PSC1125 Oscilloscope Digital Audio Monitor Two parallel signal cables Three 75 BNC cables BNC T connector Two 75 Q terminators Connections Refer to Figure 4 4 for connections Using the parallel signal cables supplied with the PSC1125 connect between the G Y on the TSG1001 and Y on the PSC1125 and between the B Pb on the TSG1001 and on the PSC1125 Using the 7
60. attery of the CPU module has a shelf life of about five years Partial or total loss of stored settings upon power on may indicate that the battery needs to be replaced Operating Environment Operating Temperature Ventilation Requirements The following environmental requirements ensure proper operation and long instrument life 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 After storage at temperatures outside the operating limits allow the chassis to stabilize at a safe operating temperature before applying power The waveform monitor is cooled by air drawn in and exhausted through its cabinet side panels by an internal fan To ensure proper cooling allow at least two inches 5 cm clearance on both sides one inch 2 5 cm on the bottom and top and six inches 15 cm on the rear The feet on the bottom provide the required clearance when set on a flat surface WFM 1125 Option 0A 0B OC OD Service Manual Preparation for Use Applying and Interrupting Power Consider the following information when you power on or power off the instrument or when power is interrupted due to an external power failure Power On At power on the waveform monitor does not run the self check The waveform monitor has the internal diagnostic routines to allow you to isolate faulty modules If needed run the internal diagnostic
61. ay Adjust the centering rings for the least amount of distortion and the best centering WFM 1125 Option OA OB OC OD Service Manual Adjustment Procedures Black And White Levels 7 Adjust R64 BLACK R454 BRIGHT to make the background disappear 8 Press the INTEN MENU button and then select GRADATION from the menu a Regulate R4 WHITE R251 CONTRAST so that the leftmost column is visible faintly and the two leftmost columns are discriminated Focus 9 Press the INTEN MENU button and then select GRID from the menu a With R36 CORNER FOCUS R453 FOCUS adjust the peripheral focus b With L5 CENTER FOCUS adjust the center focus c Check the whole If necessary repeat the above adjustments 10 Press the INTEN MENU button and then STANDBY button twice to exit from the DIAG CAL menu Output Adjustment Preparations To perform the output adjustments you must first remove the enclosure cabinet For removing the enclosure refer to Preparation on page 5 2 To perform the output adjustments you also must download the signal set data supplied with the floppy disk to the TSG1001 and make connections between the HDTV signal generator and the waveform monitor in advance For downloading the signal set data and making connections refer to Downloading to the 5 1001 on page 44 and Connections on page 4 5 After you have made connections find the variable resister on the A10 input board See figur
62. cord set Reference information 90 W max 1 0 Arms at 50 Hz Maximum Dissipation Voltage 90 V with 5 clipping Surge Current 40 A peak for equal to or less than 5 line cycles after the instrument has been turned off for at least 30 seconds Clearance Top and Bottom 2 5 cm Side 5 cm Rear 15 WFM 1125 Option 0A 0B 0C OD Service Manual Specifications Environmental Characteristics Table 1 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 Operating Non operating Vibration Operating Non operating Mechanical shock Non operating Equipment Type Equipment Class Installation Category Pollution Degree 20 to 80 No condensation 5 to 90 No condensation 10 minutes at 5 500 Hz with 0 32 g rms 10 minutes at 5 500 Hz with 2 46 g rms 294 m s 30 g 1 2 sine 11 ms duration 3 shocks per surface 18 total Test and Measuring Class Grounded product as defined in IEC 1010 1 Annex H Category II as defined in IEC 1010 1 Annex J Note Rated for indoor use only Category Examples of Products in this Category CAT III Distribution level mains fixed installation Local level mains appliances portable
63. d States of America Name VISA or Master Card number and expiration Company date or purchase order number Address Repair Protection 1 2 or 3 years City State Postal code Calibration Services 1 2 3 4 or 5 years Country Instrument model and serial number Phone Instrument purchase date Table of Contents Specifications Operating Information Theory of Operation General Safety Summary Service Safety Summary EN Introduction siss sus cren ea na Product Description Specifications as a aaa ies Electrical Specifications llle Environmental Characteristics Physical Characteristics uqu a ccc eh Safety and EMT ai ar ar RE eee is es Operating Information Preparation for Use Installation ui ri en gehe Bean sahen Supplying Operating Power 0 0 0 eee ee ee eee Operating Environment 0 0 eee eh Applying and Interrupting Power Repackaging Instructions 0 0 cece e Installed Options 2 0 0 eee IIR Using the Menus ehh Re en Bezel shoe ICE Ba ERU CERNI IRAN IAE IEEE Configure Men vic ORO DIAG CAL x a ete tat Nig dt EHE T E RARE Remote Operation ii asas UN ERE RE C
64. d module These modules cost significantly less than new modules and meet the same factory specifications For more information about the module exchange program call 1 800 TEK WIDE extension 6630 Module Repair and Return You may ship your module to us for repair after which we will return it to you New Modules You may purchase replacement modules in the same way as other replacement parts WFM 1125 Option OA OB OC OD Service Manual 10 1 Mechanical Parts List Using the Replaceable Parts List This section contains a list of the mechanical and or electrical components that are replaceable for the waveform monitor Use this list to identify and order replacement parts The following table describes each column in the parts list Parts List Column Descriptions Column Column Name Description 1 Items in this section are referenced by component number 2 Use this part number when ordering replacement parts from Tektronix 3and4 Serial Number Column three indicates the serial number at which the part was first effective Column four indicates the serial number at which the part was discontinued No entries indicates the part is good for all serial numbers 5 This indicates the quantity of parts used 6 Name amp Description An item name is separated from the description by a colon Because of space limitations an item name may sometimes appear as incomplete Use the U S Federal Catalog handbook H6 1 for further
65. damage to this product have it inspected by qualified service personnel Do Not Operate in Wet Damp Conditions Do Not Operate in an Explosive Atmosphere Provide Proper Ventilation Refer to the manual s installation instructions for details on installing the product so it has proper ventilation WFM 1125 Option 0A 0B 0C OD Service Manual General Safety Summary vi Symbols and Terms A A 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 Terms on the Product These terms may appear on the product DANGER indicates an injury hazard immediately accessible as you read the marking WARNING indicates an injury hazard not immediately accessible as you read the marking CAUTION indicates a hazard to property including the product Symbols on the Product The following symbols may appear on the product A AN m WARNING Protective Ground CAUTION Double High Voltage Earth Terminal Refer to Manual Insulated WFM 1125 Option 0A 0B 0C 0D Service Manual Service Safety Summary Only qualified personnel should perform service procedures Read this Service Safety Summary and the General Safety Summary before performing any service procedures Do Not Service Alone
66. de The waveform monitor that appears to have been dropped or otherwise abused should be checked thoroughly to verify correct operation and performance Immediately repair defects that could cause personal injury or lead to further damage to the instrument Table 6 2 External inspection check list Item Cabinet front panel and cover Inspect for Cracks scratches deformations damaged hardware or gaskets Repair action Repair or replace defective module Front panel knobs Connectors Carrying handle bail cabinet feet Accessories Missing damaged or loose knobs Broken shells cracked insulation and deformed contacts Dirt in connectors Correct operation Missing items or parts of items bent pins broken or frayed cables and damaged connectors Repair or replace missing or defective knobs Repair or replace defective modules Clear or wash out dirt Repair or replace defective module Repair or replace damaged or missing items frayed cables and defective modules Cleaning Procedure Exterior To clean the instrument exterior do the following steps 1 Remove loose dust on the outside of the waveform monitor with a lint free cloth 2 Remove remaining dirt with a lint free cloth dampened in a general purpose detergent and water solution Do not use abrasive cleaners WFM 1125 Option 0A 0B OC OD Service Manual Maintenance 3 Clean the light filter protec
67. e 5 4 WFM 1125 Option Service Manual 5 5 Adjustment Procedures R166 R172 DL200 DL210 R502 R522 R542 Pee Bet S O ole CJ d O erm OOO O Oe a E i O o O _ O a O E E O O ld O O O O Figure 5 4 A10 input board view Analog Output Adjustment 5 6 A WARNING To avoid serious injury do not touch exposed connections or components when operating the instrument with the protective enclosure removed Dangerous potentials exist at several points within the waveform monitor Connections Connect ANALOG OUT Y connector on the waveform monitor rear panel to the oscilloscope CHI input using the 75 2 BNC cable and the BNC T connector Connect ANALOG OUT P connector on the waveform monitor rear panel to the oscilloscope CH2 input using the other 75 2 BNC cable and the other BNC T connector Terminate the other end of the BNC T connectors with the 75 Q terminators WFM 1125 Option OA OB OC OD Service Manual Adjustment Procedures Initial Setups TSG1001 COLOR BARS 100 COLOR BARS Oscilloscope Waveform CHI Vertical scale 10 mV div Vertical offset OV Vertical position Center Horizontal scale 10
68. e DISPLAY CH2 and confirm m The CH2 LED lights m Py signal is currently displayed Press the DISPLAY CH3 and confirm m The CH3 LED lights WFM 1125 Option Service Manual 4 7 Performance Verification 4 8 10 11 12 13 m signal is currently displayed Press the DISPLAY OVERLAY PARADE button and confirm m The LEDs of the PARADE CHI CH2 and CH3 light m Y Pp and P signals are being displayed in that order Press the DISPLAY OVERLAY PARADE button and confirm m The LEDs of the OVERLAY CHI CH2 and CH3 light m Y Pp and P signals are being overlapped on the screen Press the DISPLAY BOWTIE VECTOR button and confirm m The LEDs of the VECTOR lights W Vector display is being made a Press the LIGHTNING bezel button and confirm m Lightning display is being made b Press the DIAMOND bezel button and confirm m Diamond display is being made On the TSG1001 front panel press the TIMING SIGNALS button to set the TIMING SIGNAL to BOWTIE Press the DISPLAY BOWTIE VECTOR button and confirm m The LEDs BOWTIE lights m Bowtie waveform is displayed on the screen Press the DISPLAY STATUS button and confirm m The STATUS LED lights m Status display is in progress Press the DISPLAY OVERLAY PARADE button and then the VER TICAL OFFSET button and confirm m The OFFSET menu appears at the far right part of the screen m Each of CHI CH2 CH3 and ALL can be selected by press
69. e LEDs on the front panel A60 DC DC board The A60 DC DC board generates the 2 5 1 2 3 3 and 12 5 V power supply voltages from the 5 V power supplied from Power Supply and sends them to the other boards Power Supply The Power Supply generates the 5 V power supply voltage from the AC line and sends it to the A60 DC DC board and A20 Main board The principal Power switch located on the rear panel controls all power to the waveform monitor including the Power Supply A5 DISPLAY board The A5 DISPLAY board is a VGA driver that drives the VGA monitor The VGA signal is supplied through the A20 MAIN board s J390 connector Fan The fan provides forced air cooling for the waveform monitor It connects to 12 5 V from the A60 DC DC board WFM 1125 Option Service Manual 3 5 Theory of Operation 3 6 WFM 1125 Option 0A 0B 0C OD Service Manual Performance Verification AAA Sy Performance Verification This section describes the operation tests for the WFM 1125 Digital Television Waveform Monitor Option 0A 0B OC OD and the procedures for those tests The operation tests can be divided into two categories m Diagnostics The waveform monitor incorporates a diagnostic routines that performs comprehensive instrument testing This routine confirms that the waveform monitor is operating correctly Refer to Diagnostics on page 6 19 for the diagnostic procedures m Performance tests These t
70. ees designed to help you isolate faulty modules in the waveform monitor Diagnostics The WFM 1125 Digital Television Waveform Monitor Option 0A 0B 0C OD has internal diagnostics that focus on verifying adjusting and if need be isolating faulty modules Preparation Display DIAG CAL menu on the screen Refer to DIAG CAL Menu on page 2 14 for the DIAG CAL menu structure and those operation information 1 Turn on the power switch on the rear panel 2 Press the INTEN MENU button while holding down the lowest bezel button to enter into the DIAG CAL menu 3 Press DIAG CAL bezel button Front panel buttons Check the front panel buttons knobs and LEDs knobs and LEDs Buttons and knobs 4 Select KEY KNOB from the menu a When you press a button on the front panel except for the third bezel button the name associated with the button is displayed on lower part of the CRT Press all the front panel buttons except for the third bezel button and confirm that all the buttons operate properly b Turn the knob clockwise and anticlockwise to confirm that the name of the corresponding knob followed by INC or DEC is displayed on the lower part of the screen Do this procedures for all the knobs on the front panel 5 Select KEY KNOB from the menu LEDs 6 Select LED from the menu and confirm that all the LEDs on the front panel light WFM 1125 Option 0A 0B 0C OD Service Manual 6 19 Troubleshooting 6 20 Memories P
71. ence input with passive loop through bi level or tri level sync WFM 1125 Option OA OB OC OD Service Manual 1 1 Product Description m AES EBU digital audio output except for 720 60p 720 59 94 1080 24p and 1080 23 98p m Y Pp P picture monitor analog output from selected serial digital signal input 1 2 WFM 1125 Option 0A 0B OC OD Service Manual Specifications Tables 1 1 through 1 20 list the electrical specifications for the WFM 1125 Digital Television Waveform Monitor Option Option OA OB OC OD Performance requirements are generally quantitative and can be tested by qualified service personnel Reference information describes useful operating parameters and typical characteristics and performance The performance requirements listed in the electrical specification portion of these specifications apply over an ambient temperature range of 0 C to 40 C The rated accuracies are valid when the instrument is calibrated at an ambient temperature range of 20 C to 30 C after a warm up time of 20 minutes Electrical Specifications Table 1 1 Vertical deflection system Characteristic Frequency Response Luminance Channel Y Performance requirements Reference information 50 kHz to 30 MHz lt 0 5 of the frequency 37 125 MHz lt 12 dB response at 50 kHz Chrominance Channel Pp 50 kHz to 15 MHz lt 0 7 of the frequency 18 5625 MHz lt 12 dB response at 50 kHz
72. equipment CAT Signal levels in special equipment or parts of equipment telecommunications electronics Pollution Degree 2 Do not operate in environments where conductive pollutants may be present WFM 1125 Option 0A 0B OC OD Service Manual Specifications Physical Characteristics Table 1 22 Physical characteristics Characteristics Descriptions Dimensions Height 133 mm Width 216 mm Depth 432 mm Weight Net Approximately 6 0 kg Shipping Approximately 8 3 kg Safety and EMI Table 1 23 Certifications and compliances Category Standards or description EC Declaration of Conformity EMC Meets intent of Directive 89 336 EEC for Electromagnetic Compatibility Compliance was demonstrated to the following specifications as listed in the Official Journal of the European Union EN 55103 1 1996 Emissions EN 55022 Class B Radiated and Conducted Emissions EN 61000 3 2 AC Power Line Harmonic Current Emissions EN 61000 3 3 Line Voltage Alteration and Flicker EN 55103 1 AnnexA Magnetic Field Emissions EN 55103 1 AnnexB Power Line Inrush Current EN 55103 2 1996 Immunity IEC 61000 4 2 Electrostatic Discharge Immunity IEC 61000 4 3 RF Electromagnetic Field Amplitude Immunity IEC 61000 4 4 Electrical Fast Transient Burst Immunity IEC 61000 4 5 AC Mains Surge Immunity IEC 61000 4 6 Conducted RF Immunity IEC 61000 4 8 Power Frequency Electromagnetic Field Immunity IEC 61000 4 11 Mains Voltage Dip amp Interruption Immun
73. ests confirm the operation of the items that are marked with an asterisk in the guaranteed items in the operating specifications listed in Section 1 Specifications The equipment listed in Table 4 1 is required to perform these performance tests WFM 1125 Option 0A 0B 0C OD Service Manual 4 1 Performance Verification Before Running the Performance Tests Perform the following before running the Operation Tests Warm up A 20 minute warm up period is required for the all instruments except for PC prior to running the operation tests Required Equipments Table 4 1 lists the equipment required for the performance tests Table 4 1 Required equipment Item HDTV signal generator Sampling oscilloscope Oscilloscope Digital Audio Monitor Required precision Recommended equipment Purpose 1 Latest modification must Tektronix TSG1001 and Signal source be installed PSC1125 Upgraded by 040 1649 00 upgrade kit UE Tektronix 11801C or equivalent To observe and measure the sampling head SD 24 or SD 26 voltage from the MONITOR OUT 1 Tektronix TDS540B or equivalent To observe and measure many output signals 1 Tektronix 764 or equivalent To observe audio signal from the AUDIO output Ground closer loopback cable with 15 pin D type NTSC TV Generator EU PA To provide NTSC test signal Source RS 232C cable with ee Te Signal interconnections between 25 pin D type connectors provided with the PSC
74. et 1700F02 is shown in Figure 2 2 The 1700F02 has a handle four feet and a flip up stand The mounting hole sizes and spacing are different from those of the 1700F00 2 4 WFM 1125 Option 0A 0B OC OD Service Manual Preparation for Use 21 cm 8 25 in Figure 2 2 1700F02 portable cabinet Cabinet Installation Secure the waveform monitor in a cabinet using two Trox 1 15 screws Figure 2 3 shows the location of these screws on the rear panel rear panel mounting screws Without the mounting screws there is nothing to CAUTION Do not carry the waveform monitor in a cabinet without installing the keep the waveform monitor in its cabinet WFM 1125 Option OA OB OC OD Service Manual 2 5 Preparation for Use Cabinet securing screws A ze oe o Figure 2 3 Rear view of the waveform monitor in a 1700F02 cabinet Rack Adapter Installation The optional 1700F05 side by side rack adapter shown in Figure 2 4 consists of two attached cabinets Use it to mount the waveform monitor and another half rack width instrument such as an analog component monitor in a standard 19 inch rack 2 6 WFM 1125 Option 0A 0B OC OD Service Manual Preparation for Use You can adjust the rack adapter so that the waveform monitor is aligned with other equipment in the rack See Figure 2 4 A Mounting holes Mounting holes 17 3 in
75. f such information are procedures for checking performance and for readjustment Further it contains all information for corrective maintenance down to the module level This means that the procedures diagrams and other troubleshooting aids help isolate failures to a specific module rather than to components of that module Once a failure is isolated replace the module with a fresh unit obtained from the factory All modules are listed in Mechanical Parts List To isolate a failure to a module use the fault isolation procedures found in Section 6 Maintenance Tektronix provides service to cover repair under warranty as well as other services that may provide a cost effective answer to your service needs Whether providing warranty repair service or any of the other services listed below Tektronix service technicians trained on Tektronix products are best equipped to service your WFM 1125 Digital Television Waveform Monitor Option 0A 0B OC OD Tektronix technicians are appraised of the latest informa tion on improvements to the product as well as the latest new options to the product Tektronix warrants this product for one year from date of purchase Tektronix technicians provide warranty service at most Tektronix service locations worldwide Your Tektronix product catalog lists all service locations worldwide The following services may be purchased to tailor repair and or calibration of your WFM 1125 Digital Television Waveform Moni
76. f the environment in which the waveform monitor is used A proper time to perform preventive maintenance is just before adjustment General Care cabinet helps keep dust out of the waveform monitor and should normally be in place when operating the instrument The optional front panel cover protects the front panel and display from dust and damage It is recommended to install the optional front panel cover when storing or transporting the waveform monitor WFM 1125 Option 0A 0B 0C OD Service Manual 6 3 Maintenance Inspection and Cleaning Procedures A Inspect and clean the waveform monitor as often as operating conditions require The collection of dirt on components inside can cause them to overheat and breakdown Dirt acts as an insulating blanket preventing efficient heat dissipation Dirt also provides an electrical conduction path that could cause an waveform monitor failure especially under high humidity conditions CAUTION Avoid the use of chemical cleaning agents which might damage the plastics used in this waveform monitor Use only deionized water when cleaning the menu buttons or front panel buttons Use a 75 isopropyl alcohol solution as a cleaner and rinse with deionized water Before using any other type of cleaner consult your Tektronix Service Center or representative Inspection Exterior Inspect the outside of the waveform monitor for damage wear and missing parts using Table 6 2 as a gui
77. formation the owner s address name and phone number of a contact person type and serial number of the instrument reason for returning and a complete description of the service required Seal the shipping carton with an industrial stapler or strapping tape Mark the address of the Tektronix Service Center and also your own return address on the shipping carton in two prominent locations All options and optional accessories are listed and described in Section 7 Options For further information and prices of instrument options contact your Tektronix Field Office WFM 1125 Option 0A 0B OC OD Service Manual 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 6 shows the buttons and knob used for menu selection INTEN MENU button SELECT button and knob Display menus with their optional selections Bezel buttons NI STANDBY button Figure 2 6 Elements of the WFM 1125 menu controls Bezel Menu This menu directly relates to display mode settings When you change the display mode by pressing any of the front panel function buttons the menu item associated with it appears at the right side of the display To select a bezel menu item press the bezel button a
78. ghtning and diamond mode 1 10 Bowtie mode ses senese an en 1 11 Status display mode 1 11 Save and display mode 1 11 Warning display 1 11 Calculation dynamic range 1 12 Setup memory 1 12 CRT display cue eee e ee 1 12 AC power source 1 12 Installation requirements 1 13 Environmental characteristics 1 14 Physical characteristics 1 15 Table 1 23 Certifications and compliances2 1 15 Table 2 1 Power cord conductor identification 2 9 Table 2 2 Effects of corrupted data 2 11 Table 2 3 Remote connector pin assignments and functions 2 19 Table 4 1 Required equipment 4 2 Table 5 1 Required equipment 5 1 Table 6 1 Relative susceptibility to static discharge damage 6 3 Table 6 2 External inspection check list 6 4 Table 6 3 Internal Inspection check list 6 5 Table 6 4 Required equipment 6 9 Table 6 5 Floppy disk sfilelist 6 10 Table 7 1 Standard accessories 7 1 Table 7 2 Optional acces
79. gure A20U100 A20U250 A20U350 A20U430 A20U470 A20U500 and 200580 i e to program FPGA LINES1 TTF For LINES 1LINE or FIELD display LINES2 TTF For LINES 2LINE display LINES3 TTF For LINES parade or overlay display 3FIELD TTF For parade display Field LINESEL1 TTF For LINE SELECT 1LINE display LINESEL2 TTF For LINE SELECT 2LINE display LINESEL3 TTF For SELECT parade or overlay display STATUS TTF When STATUS is displayed BOWTIE TTF For Bowtie display WFM 1125 Option 0A 0B OC OD Service Manual Firmware Updates Table 6 5 Floppy disk s file list Cont Type File name Descriptions DIAMOND TTF For Diamond display LIGHTEN TTF For Lightning display X table Loaded to A20U425 1LINES Lines display 3LINES Parade display 3LINES1 Parade display Line Select 3FIELDS Parade display Field FIELD Field display HMAG Horizontally enlarged display by a factor of 25 LINES lines display Line Select LINESH lines display Line Select and Hmag VEC100X1 Vector display 100 Color bar VEC100X5 Vector display 100 Color bar with 5x Gain VEC100XA Vector display 100 Color bar with 10x Gain VEC75X1 Vector display 75 Color bar VEC75X5 Vector display 75 Color bar with 5x Gain VEC75XA Vector display 75 Color bar with 10x Gain Y table Loaded to A20U410 NORM1 Normal scale NORM5 Normal scale with 5x Gain NORM10 Normal scale with 10x Gain WIDE1 Wide scale WIDE5 Wide scale with 5x Gain WIDE10 Wide scale with 10
80. ing the corresponding bezel button and turning the V POS knob causes only the trace s for the selected channel s to move vertically Select RESET from the menu Press the INTEN MENU button WFM 1125 Option 0A 0B OC OD Service Manual Performance Verification 14 15 16 17 18 19 20 21 22 23 Press the GAIN ON button and press the X5 bezel button and then confirm m The GAIN ON LED lights Press the X1 bezel button to set the vertical gain to off Press the LINE SEL ON button and confirm m The VBLANK part disappears from the trace m The LINE SEL ON LED lights m A line number is displayed at the upper left part of the screen Press the DISPLAY CH1 button and then press the SWEEP button and confirm m The SWEEP menu appears at the far right part of the screen m Pressing each of the bezel buttons causes to change the display Select 1 LINE from the menu and press the INTEN MENU button Press the HORIZONTAL MAG button to set it to on and confirm m The waveform is enlarged laterally m The HORIZONTAL MAG LED lights Press the HORIZONTAL MAG button to set it to off Press the CURSOR ON button on the front panel and confirm m The CURSOR menu appears at the far right part of the screen m When a cursor is selected the CURSOR ON LED goes on and the LED goes off when the OFF is selected Select OFF from the menu and then press the INTEN MENU button Press INPUT
81. iod and make suitable arrangements for the performance of service Customer shall be responsible for packaging and shipping the defective product to the service center designated by Tektronix with shipping charges prepaid Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located Customer shall be responsible for paying all shipping charges duties taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this warranty a to repair damage resulting from attempts by personnel other than Tektronix representatives to install repair or service the product b to repair damage resulting from improper use or connection to incompatible equipment c to repair any damage or malfunction caused by the use of non Tektronix supplies or d to service a product that has been modified or integrated with other products when the effect of such modification or integration increases the time or difficulty of servicing the product THIS WARRANTY IS GIVEN BY TEKTRONIX IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE TEKTRONIX RESPONSIBILITY TO REP
82. ipment of the waveform monitor are found in this section m Theory of Operation contains circuit descriptions that support general service and fault isolation down to the module level m Performance Verification contains a collection of procedures for confirming that these waveform monitor function properly and meet warranted limits m Adjustment Procedures contains a collection of procedures for adjusting these waveform monitor to meet warranted limits m Maintenance contains information and procedures for doing preventive and corrective maintenance of these waveform monitor Instructions for cleaning for firmware updates and for fault isolation to a module are found here W Options contains information on servicing any of the factory installed options that may be present in your waveform monitor WFM 1125 Option Service Manual ix Preface m Electrical Parts List contains a statement referring you to Mechanical Replaceable Parts where both electrical and mechanical modules are listed m Diagrams contains a block diagram and an interconnection diagram useful for isolating failed modules m Mechanical Parts List includes a table of all replaceable modules their descriptions and their Tektronix part numbers as well as the exploded view Document Conventions Modules Safety Symbols Related Manual This document uses certain conventions which you should become familiar with before doing service
83. istortion when input data in analog level goes out of above ranges With 9 bit calculation Y R G B 450 to 41170 mV 790to 790 mV Waveform may have some distortion when input data in analog level goes out of the above ranges Table 1 17 Setup memory Characteristic Performance requirements Number of memory setups Save and Recall Table 1 18 CRT display Characteristic Performance requirements CRT Viewing Area Resolution Table 1 19 AC power source Characteristic Performance requirements Range Reference information 4 setups Option 100 setups Option OD This function is performed from front panel menu and remote connector ground closure for the memory location number 1 to 4 For the other memory location number it is controlled through the RS 232C connector Reference information 71 V X 95 H mm Horizontal 640 pixels Vertical 480 pixels Reference information 90 240 VAC 48 to 63 Hz Power Consumption 90 W 100 VA Maximum Current 1 0A WFM 1125 Option 0A 0B OC OD Service Manual Specifications Table 1 19 AC power source Cont Characteristic Performance requirements Peak Inrush Current Supply Connection 2 Per EN 55103 1 Annex B Table 1 20 Installation requirements Characteristic Performance requirements Heat Dissipation Maximum Power Reference information 10A2 Detachable
84. item name identification 7 Mfr Code This indicates the code of the actual manufacturer of the part Code to name and address cross reference is located after this page 8 Mfr Part Number This indicates the actual manufacturer s or vendor s part number Abbreviations Abbreviations conform to American National Standard ANSI Y1 1 1972 Mfr Code to Manufacturer The following table cross indexes codes names and addresses of manufacturers Cross Index vendors of components listed in the parts list 10 2 WFM 1125 Option OA OB OC OD Service Manual Mechanical Parts List Manufacturers Cross Index Mfr Code Manufacturer 0D1M6 TECHNOLOGIES INC 0GV52 SCHAFFNER EMC INC 0JR05 TRIQUEST PRECISION PLASTICS 0KB01 STAUFFER SUPPLY 0KB05 NORTH STAR NAMEPLATE 05791 LYN TRON INC 50783 WINTRON INC FORMERLY PENN TRAN CORP 32997 BOURNS INC 54186 MICRO POWER SYSTEMS INC 54972 CLINTON ELECTRONICS CORP 73743 FISCHER SPECIAL MFG CO 7X318 KASO PLASTICS INC 80009 TEKTRONIX INC 80126 PACIFIC ELECTRICORD CO 86928 SEASTROM MFG CO INC S3109 FELLER U S CORPORATION TK0435 LEWIS SCREW CO TK2469 UNITREK CORPORATION TK2541 AMERICOR ELECTRONICS LTD TK2548 XEROX BUSINESS SERVICES DIV OF XEROX CORPORATION TK2640 STERLING ELECTRONICS Address 9730 INDEPENDENCE AVE 9 B FADEM ROAD 3000 LEWIS amp CLARK HWY PO BOX 66008 810 SE SHERMAN 5750 NE MOORE COURT 3150 DAMON WAY 250 RUNVILLE ROAD TRIMP
85. ity EN 55103 2 Annex A Magnetic Field Immunity Environmental Class E2 Australia New Zealand Declaration of Conformity EMC Complies with EMC provision of Radiocommunications Act per the following standard s AS NZS 2064 1 2Industrial Scientific and Medical Equipment 1992 Emissions comply with FCC Code of Federal Regulations 47 Part 15 Subpart B Class A Limits FCC Compliance WFM 1125 Option 0A 0B 0C OD Service Manual 1 15 Specifications Table 1 23 Certifications and compliances Cont Category EC Declaration of Conformity Low Voltage Standards or description Compliance was demonstrated to the following specification as listed in the Official Journal of the 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 U S Nationally Recognized Testing Laboratory Listing UL3111 1 Standard for electrical measuring and test equipment Canadian Certification CAN CSA C22 2 No 1010 1 Safety requirements for electrical equipment for measurement control and laboratory use Additional Compliance 1EC61010 1 Safety requirements for electrical equipment for measurement control and laboratory use Installation Overvoltage Category Pollution Degree Safety Certification Compliance Equipment Type Safety Class Overvoltage Category Pollution Degree Terminals on
86. iv for CH2 Vertical offset 0 V for CH1 and CH2 Horizontal scale 1 us div Record length 5000 points Press the MATH REF button on the oscilloscope front panel and then press the main and side menu buttons in the following order to create a Math waveform Change Math waveform definition Dual Math Set Ist Source to Ch1 Set operator to Set 2nd Source to Ch2 Change the oscilloscope settings to Waveform CH1 and CH2 to Off ZOOM en een st RE On Vertical scale 100 mV div 5 0 X Vert for Mathl Horizontal scale 5 us div 0 2X Horz Observe the Bowtie display on the oscilloscope and verify and adjust the A10 DL200 so that the skew is within 1 ns the marker on the display indicates 1 ns Change the oscilloscope zoom setting to off On the TSG1001 front panel press the COLOR BARS button to set the COLOR BAR to 100 Change the BNC cable from ANALOG OUT P connector to ANALOG OUT P connector Change the oscilloscope settings to Waveform MATHI to off and CH2 to on Vertical scale 10 mV div WFM 1125 Option 0A 0B OC OD Service Manual Adjustment Procedures 21 22 23 24 25 26 27 28 29 30 Vertical offset 350 mV Align the 350 mV level of the signal with the center graticule on the oscilloscope Change the oscilloscope CH2 vertica
87. l offset to 350 mV Verify and adjust the A10 R542 to align the 350 mV level with the center graticule on the oscilloscope Change the oscilloscope CHI vertical offset to 350 mV If the 350 mV level is within 0 5 division from the center graticule go to next step If not go back to step 21 Press the TIMING SIGNALS button on the TSG1001 front panel to set the TIMING SIGNALS to BOWTIE Change the oscilloscope settings to Waveform CHI and CH2 Vertical scale 100 mV div for CH1 100 mV div for CH2 Vertical offset 0 V for CH1 and CH2 Horizontal scale 1 us div Record length 5000 points Press the MATH REF button on the oscilloscope front panel and then press the main and side menu buttons in the following order to create a Math waveform Change Math waveform definition Dual Math Set 1st Source to Ch1 Set operator to Set 2nd Source to Ch2 Change the oscilloscope settings to Waveform and CH2 to Off ZOOM een s OE On Vertical scale 100 mV div 5 0 X Vert for Mathl Horizontal Scale 5 us div 0 2X Horz Observe the Bowtie display on the oscilloscope and verify and adjust the A10 DL210 so that the skew is within 1 ns the marker on the display indicates 1 ns WFM 1125 Option Service Manual 5 9 Adjustment Procedures Audio Output Adjustment Connections
88. n sufficiently shielded WFM 1125 Option 0A 0B 0C OD Service Manual vii Service Safety Summary viii WFM 1125 Option 0A 0B OC OD Service Manual Preface This document supports serial number J310000 and above This preface contains information needed to properly use this document to service the WFM 1125 Digital Television Waveform Monitor Option as well as general information critical to safe and effective servicing of this waveform monitor This manual applies to any instrument with serial number J310101 and above Document Structure This document is divided into sections such as Specification and Theory of Operation Further it is divided into subsections such as Product Description and Removal and Installation Procedures Sections containing procedures also contain introductions to those procedures Be sure to read these introductions because they provide information needed to do the service correctly and efficiently The following is a brief description of each document section W Specification contains a product description of the WFM 1125 Digital Television Waveform Monitor Option 0A 0B 0C OD and tables of the characteristics and descriptions that apply to it m Operating Information includes general information and operating instruc tions at the level needed to safely power on and service this waveform monitor A statement of the service strategy that this document supports and instructions for sh
89. nnect between the G Y on the TSG1001 and Y on the PSC1125 and between the B Pb on the TSG1001 and Pp Pr on the PSC1125 Using the 75 2 BNC cable connect the OUTI connector on the PSC1125 rear panel to the CH A connector on the waveform monitor rear panel WFM 1125 Option Service Manual 4 19 Performance Verification Connect the 15 pin D type ground closure to the REMOTE connector on the rear panel See Figure 4 1 for the switch ID symbols SWxx on the ground closure 75 Q BNC cable WFM1125 waveform monitor rear panel Parallel signal cable PSC1125 TSG1001 generator rear panel converter rear panel am Can i E AI D type ground closure Parallel signal cable Figure 4 6 External reference test initial hookup Initial Setups m TSGIOOI FORMAT SMPTE 274M 60Hz for Option 0A SMPTE 296M for Option OB 1 Open all dip switches on the ground closure 2 Close SW15 and confirm m The INPUT B LED lights 3 Open SW15 m The INPUT A LED lights 4 Close SW15 m The INPUT B LED lights 5 Close SW11 m The display changes to STATUS 4 20 WFM 1125 Option 0A 0B OC OD Service Manual Performance Verification 10 11 12 13 14 15 16 17 18 19 20 21 Close SW14 Open SW11 Close SW11 m The display changes to VECTOR Close SW13
90. nous pulses of VGA When SAVE amp DISP is not working ADDER selects the RAM the contents of which are being read through the serial port of the triple buffer VRAM It then sends the data of this RAM to RAM DAC When the front panel s SAVE amp DISP button is pressed ADDER adds the U585 serial data to the selected data above before sending the result to RAM DAC RAM DAC produces the intensity signal based on the data used in ADDER INTENSITY can be updated by rewriting the data within the internal palette of RAM DAC The main functions are 1 generating the address used to switch the coefficient of the GF9101 within INTERPOLATE 2 controlling the clock that will be added to the DOUBLER controller and 3 generating the strobe of the effective data This control starts when EMPTY FLAG is negated after the data enters the FIFO Since this board uses reconfigurable FPGA 10K10 and 10K30 the contents of FPGA vary with the mode This rule applies also to X RAM and Y RAM The A40 CPU board consists of the 68303 CPU 128K byte ROM 256K byte RAM with battery backup and 8M byte FLASH ROM This board has an RS 232C port which facilitates program modification WFM 1125 Option 0A 0B OC OD Service Manual Theory of Operation A30 Front Panel board The A30 Front Panel board drives the buttons knobs and LEDs User selections from the front panel are sent to the A20 Main board and the commands from the A20 Main board control th
91. of Option OC or Progressive mode of Option 00 Field is set to ON and line is set to OFF when TTL signal level goes from High to Low 1 Line Display Going from High to Low is ignored 2 Line Display Field is set to OFF and line is set to ON when TTL signal level goes from Low to High 2 RGB RGB transcoder becomes available when TTL level goes from High to Low RBG transcoder becomes disabled when TTL level goes from Low to High 3 ONE TWO Option 0A 240M 274M format mode of Option OC or Interlace mode of Option 0D 2 Line or 2 Field is selected when TTL level goes from High to Low 1 Line or 1 Field is selected when TTL level goes from Low to High Option 0B 296M format mode of Option OC or Progressive mode of Option 00 2 Line is selected when TTL level goes from High to Low 1 Line Display Going from High to Low is ignored 1 Field Display 1 Line or 1 Field is selected when TTL level goes from Low to High 4 Interlace Segment Frame The interface format for Option OD is set by the following combinations of levels for Progressive 0 pins 4 and 8 when the TTL level goes from High to Low Pin 4 High High Low Low WFM 1125 Option 0A 0B 0C OD Service Manual Pin 8 Mode High Ignored Low Interlace High Progressive Low Segment Frame 2 19 Remote Operation Table 2 3 Remote connector pin assignments and functions cont Pin number Function Information 5 Recall 1 Front panel settings a
92. ommended equipment Purpose Cable with 9 pin D type 9 pin Dtype male to Custom see Figure 6 1 Downloading the firmware connector 9 pin Dtype female PC IBM PC compatible with MS DOS 3 1 or above Firmware floppy disks Tektronix part no 063 3174 XX Option 0B and 0 Tektronix part no 063 3250 XX Option 0D 1 1 2 d Ilo mates SO 3 3 9 pin D type x 9 pin D type male connector 6 6 female connector male 7 7 female 8 8 9 9 Figure 6 1 RS 232C cable with 9 pin D type connectors WFM 1125 Option 0A 0B 0C OD Service Manual 6 9 Firmware Updates Floppy disks The 3 5 inch MS DOS format firmware floppy disks include the files listed in Table 6 5 Table 6 5 Floppy disk s file list Type File name Descriptions 063 3174 XX Codes APPLI HEX 68K code Utilities TERM EXE TERMINAL EMULATION PC software LOADOA EXE PC software for Option OA LOADOB EXE PC software for Option 0B LOADOC EXE PC software for Option 0C 8K config files Used to configure A20U600 i e to program FPGA ADDER TTF Resident 10K30 config files Used to configure A20U200 and A10U200 i e to program FPGA TRANCE TTF When color SMPTE 240M and resol d rng RESOLU TION TRANCE9 TTF When color SMPTE 240M and resol d rng D RANGE CCIR TTF When color SMPTE 274M and resol d rng RESOLU TION CCIR9 TTF When color SMPTE 274M and resol d rng D RANGE 10K10 config files Used to confi
93. on and SESSION button to display AUDIO SESSION view In the view confirm Highest true peaks are 20 dBFS Sample rates 48 00 kHz and Active Bits are 20 On the digital audio monitor press the CH STATUS button to display CHANNEL STATUS view WFM 1125 Option OA OB OC OD Service Manual 4 17 Performance Verification External reference Parallel signal cable TSG1001 generator rear panel converter 14 In the view confirm CRC errors are not displayed This test confirms that the external reference input operation is functioning correctly The following equipment is required Equipment Required HDTV signal generator TSG1001 and PSC1125 NTSC TV signal generator Two parallel signal cables Two 75 Q BNC cables 75 Q terminator Connections Refer to Figure 4 5 for connections Using the cables supplied with the PSC1125 connect between the G Y on the TSG1001 and Y on the PSC1125 and between the B Pb on the TSG1001 and Pp Pr on the PSC1125 Using the 75 2 BNC cable connect the OUTI connector on the PSC1125 rear panel to the CH A connector on the waveform monitor rear panel Connect the ANALOG OUT Y output on the waveform monitor rear panel to one side of the EXT REF input on the waveform monitor rear panel using the 75 BNC cable Terminate the other side of the loop through to the EXT REF input with the 75 Q terminator 75 Q BNC cable WFM1125 waveform monitor rear panel PSC112
94. operating environments vary the waveform monitor is not shipped with a cabinet unless you have ordered one All qualification testing for the waveform monitor was performed in a 1700F00 cabinet To guarantee compliance with specifications you should operate the waveform monitor in one of the cabinets described here Cabinet Options The cabinets offered for the waveform monitor provide EMI shielding protect against electrical shock and protect against the accumulation of dust Figure 2 1 shows the plain cabinet option 1700F00 A rear panel fan supplies filtered cooling air which exits through the cabinet vent holes Restricting the air flow through the vents or the rear fan can lead to an excessive internal temperature WFM 1125 Option OA OB OC OD Service Manual 2 3 Preparation for Use 21 0 cm 8 25 in 42 7 cm Y 88 333 3 38 Figure 2 1 Dimensions of the 1700F00 plain cabinet WARNING To meet EMI emission and safety specifications the waveform N 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 All cabinets are available from your Tektronix representative The portable cabin
95. piece of data of a frame has been written VARIABLE PERSISTENCE The results of HISTOGRAM is written into U510 and U520 VARIABLE PERSISTENCE reads the results from these two RAMs simultaneously It then adds the sum of the two results to the value obtained by multiplying the values stored in U510 and U520 by a constant VARIABLE PERSISTENCE writes the result into the same address as the HISTOGRAM read out address again If the above constant is 0 VARIABLE PERSISTENCE is set off If it is 1 the infinite state is entered VRAM 0555 and U550 used for overlay display characters and or divisions in the whole area 480 x 640 of the VGA display WFM 1125 Option 0A 0B 0C OD Service Manual 3 3 Theory of Operation ADDER RAM DAC CONTROLLER Others A40 CPU board 3 4 U565 U570 and U575 constitute a triple buffer The data from VARIABLE PERSISTENCE can be written into the RAM without dead time U585 is a SAVE amp DISP RAM While SAVE amp DISP is not in execution U585 is continuously writing the data into the VRAM from the inside of VARIABLE PERSISTENCE running cycle When the front panel s SAVE amp DISP button is pressed US85 stops the write operation and enters the read mode in which data is read through the triple buffer s serial port The data is transferred to ADDER U600 in synchronization with one of the triple buffer RAMs U580 is controlling the above RAMs and is generating the horizontal and vertical synchro
96. pray washed using a solution of 75 isopropyl alcohol by doing steps 4 through 8 Gain access to the parts to be cleaned by removing easily accessible shields and panels Spray wash dirty parts with the isopropyl alcohol and wait 60 seconds for the majority of the alcohol to evaporate Use hot 120 F to 140 F deionized water to thoroughly rinse them Dry all parts with low pressure deionized air Dry all components and assemblies in an oven or drying compartment using low temperature 125 F to 150 F circulating air Lubrication There is no periodic lubrication required for this waveform monitor 6 6 WFM 1125 Option 0A 0B OC OD Service Manual SSS MUNIRI CEDE RUE Removal and Installation Procedures The procedures for removal and installation are not provided in this manual WFM 1125 Option 0A 0B 0C OD Service Manual 6 7 Removal and Installation Procedures 6 8 WFM 1125 Option 0A 0B 0C OD Service Manual Firmware Updates WFM 1125 Digital Television Waveform Monitor Option firmware may be downloaded when the trouble shooting is needed or when the firmware has been updated This must be done when the internal module A40 CPU board has been replaced This subsection explains the file contents in the firmware floppy disks and how to uncompress and download the firmware Preparation The equipments listed in Table 6 4 are required Table 6 4 Required equipment Item Required precision Rec
97. rade kit for format mode test of option OD file is included PSC1125 Pin ID symbols c 1 1 16 swi 2 2 15 swe 3 14 SW3 4 4 13 SW4 5 5 f SW5 6 6 t SW6 7 7 10 SW7 8 8 9 SW8 15 pin D type lt male connector 9 1 16 SW9 10 2 15 SW10 11 3 14 SW11 12 4 13 SW12 13 5 12 SW13 14 6 11 SW14 V 15 7 10 SW15 8 9 SW16 Figure 4 1 Ground closer with 15 pin D type connector WFM 1125 Option Service Manual 4 3 Performance Verification Performance Tests 4 4 Preparations The performance test for thewaveform monitor must be performed in the following order m Frequency response m Low pass filter m Front panel controls m Format modes option OD only m Analog output m Audio output W External reference m Remote functions m MONITOR out m VGA output NOTE When you do the performance procedures in this section after the A40 CPU and or A20 Main board have has been replaced you must download the firmware data to those modules first Refer to Firmware Updates on page 6 9 for the firmware updating procedures To perform tests download the signal set data multi dnl supplied with the floppy disk to the TSG1001 in advance Downloading to the TSG1001 To load the signal set data into the TSG1001 you should install the SDP1000 communication utility COM1000 into a PC The procedures de
98. rame format mode 36 Open SW4 m The display changes to Interlace format mode MONITOR output This test confirms the signal level of the MONITOR output The following equipment is required Equipment Required HDTV signal generator TSG1001 and PSC1125 Sampling oscilloscope Two parallel signal cables 75 Q BNC cable Two 50 2 BNC cables Two 75 t0 50 2 minimum loss pads Two SMA to BNC adapters Connections Refer to Figure 4 7 for connections Using the cables supplied with the PSC1125 connect between the G Y on the TSG1001 and Y on the PSC1125 and between the B Pb on the TSG1001 and Pp Pr on the PSC1125 Using the 75 2 BNC cable connect the OUTI connector on the PSC1125 rear panel to the CH A connector on the waveform monitor rear panel Attach the SMA to BNC adapters to the CH1 connector and TRIGGER DIRECT INPUT connector on the oscilloscope Attach the 75 to 50 minimum loss pads to OUT2 connector on the PSC1125 rear panel and MONITOR connector on the waveform monitor rear panel Using one of the 50 2 BNC cable connect the OUT2 attenuator on the PSC1125 to the TRIGGER DIRECT INPUT adapter on the oscilloscope Using the other 50 2 BNC cable connect the MONITOR attenuator on the waveform monitor to adapter on the oscilloscope WFM 1125 Option Service Manual 4 23 Performance Verification SMA to BNC adapter Sampling Oscilloscope
99. rating a static charge Table 6 1 lists the relative susceptibility of various classes of semiconductors Static voltages of 1 kV to 30 kV are common in unprotected environments WFM 1125 Option 0A 0B 0C 0D Service Manual Maintenance Table 6 1 Relative susceptibility to static discharge damage Relative susceptibility Semiconductor classes levels MOS or CMOS microcircuits or discrete circuits or linear 1 microcircuits with MOS inputs most sensitive ECL 2 Schottky signal diodes 3 Schottky TTL 4 High frequency bipolar transistors 5 JFET 6 Linear microcircuits 7 Low power Schottky TTL 8 TTL least sensitive 9 1 Voltage equivalent for levels voltage discharged from a 100 pF capacitor through resistance of 100 ohms 1 100 to 500 V 6 600 to 800 V 2 200 to 500 V 7 400 to 1000 V est 3 250V 8 900 V 4 500 V 9 1200 V 5 400 to 600 V Inspection and Cleaning Inspection and Cleaning describes how to inspect for dirt and damage It also describes how to clean the exterior and interior of the WFM 1125 Digital Television Waveform Monitor Option 0A 0B OC OD Inspection and cleaning are done as preventive maintenance Preventive maintenance when done regularly may prevent instrument malfunction and enhance its reliability Preventive maintenance consists of visually inspecting and cleaning the instrument and using general care when operating it How often to do maintenance depends on the severity o
100. re 2 5 Figure 2 6 Figure 2 7 Figure 2 8 Figure A 1 Figure 4 1 Figure 4 2 Figure 4 3 Figure 4 4 Figure 4 5 Figure 4 6 Figure 4 7 Figure 5 1 Figure 5 2 monitor Figure 5 3 Dimensions of the 1700F00 plain cabinet 1700F02 portable cabinet Rear view of the waveform monitor in a 1700F02 1700F05 cabinet showing utility drawer and blank panel Elements of the WFM 1125 menu controls DIAG CAL menu structure Pin assignments for the RS 232C connector Pin assignments for the REMOTE connector Ground closer with 15 pin D type connector Performance test initial hookup Analog output test initial hookup Audio output test initial hookup External reference test initial hookup External reference test initial hookup Monitor output test initial hookup Rear view of the waveform monitor in a enclosure 5 display board view from top of the waveform A5 display board view from top of the waveform monitor J310171 and above Figure 5 4 Figure 5 5 Figure 5 6 Figure 6 1 Figure 6 2 Figure 6 3 Figure 6 4 Figure 9 1 Figure 9 2 Figure 9 3 A10 input board view A40 CPU board view and test points Power supply module view and VR501
101. re 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 7 1 Low Low 2 Low High 3 High Low 4 High High 6 Store The current front panel settings are stored into the memory location specified by the combined of pins 5 and 7 when the TTL level of pin 6 goes from High to Low Refer to pin 5 description for memory locations 7 Recall 0 See pin 5 information 8 Interlace Segment Frame See pin 4 information Progressive 1 9 Ground 10 Save amp Disp Save and Display mode is set to ON when the TTL level goes from High to Low Save and Display mode is set to OFF when the TTL level goes from Low to High 11 Edge The display mode is selected according to the combined status of of pins 12 13 and 14 when the TTL level goes from High to Low Mode Pin 12 Pin 13 Pin 14 CH 1 Low Low Low CH2 Low Low High CH3 Low High Low Bowtie Low High High Parade High Low Low Overlay High Low High Vector High High Low Status High High High 12 Display 2 See pin 11 description 13 Display 1 See pin 11 description 14 Display 0 See pin 11 description 15 A B Channel B input becomes available when the TTL level goes from High to Low Channel A input becomes available when the TTL level goes from High to Low 2 20 WFM 1125 Option 0A 0B OC OD Service Manual Theory of Operation Theory of Operation This sec
102. s Connections Refer to Figure 4 3 for connections Using the parallel signal cables supplied with the PSC1125 connect between the G Y on the TSG1001 and Y on the PSC1125 and between the B Pb on the TSG1001 and Pg Pg on the PSC1125 Using the 75 2 BNC cable connect the OUTI connector on the PSC1125 rear panel to the CH A connector on the waveform monitor rear panel Connect ANALOG OUT Y and ANALOG OUT Py connector on the waveform monitor rear panel to the oscilloscope CH1 and CH2 input respectively using the 75 2 BNC cables and the BNC T connectors Terminate the other side of the BNC T connectors with the 75 Q terminators WFM 1125 Option OA OB OC OD Service Manual Performance Verification BNC T connector and 75 Q terminator 75 Q BNC cable Parallel signal cable PSC1125 eee E TSG1001 generator rear panel converter TSENG Om 000 E i S rear panel al y le e WFM1125 waveform Parallel signal cable monitor rear panel Figure 4 3 Analog output test initial hookup Initial Setups m TSGI001 FORMAT SMPTE 274M 60Hz for Option OA SMPTE 296M for Option OB COLOR BARS 100 COLOR BARS m The Waveform Monitor m Oscilloscope Waveform CHI Vertical scale 10 mV div Vertical offset OV Vertical position Center
103. s manually Refer to Section 6 Maintenance for information on diagnostics and fault isolation CRT Blinking CAUTION If the CRT blinks turn off the power Internal components could be damaged The CRT blinks if the fan on the rear panel stops working If the CRT blinks turn off the power switch and contact Tektronix for servicing Power Off CAUTION DO NOT power off the waveform monitor when doing any of the adjustments described in Section 5 Adjustment Procedures To do so might result in the loss of internally stored adjustment constants In general do not power off the instrument when doing operations Wait for the instrument to finish the operation when doing adjustments or saving setups Improper power off or unexpected loss of power to the waveform monitor may result in the following corruptions of nonvolatile RAM NVRAM The following table describes the messages displayed when power is restored after an abnormal power off Table 2 2 Effects of corrupted data Corrupted data type Results Saved Setups Setup Lost WFM 1125 Option 0A 0B 0C OD Service Manual 2 11 Preparation for Use Repackaging Instructions Installed Options Use a corrugated cardboard shipping carton having a test strength of at least 273 pounds and with an inside dimension at least six inches greater than the instrument dimensions If the instrument is being shipped to a Tektronix Service Center enclose the following in
104. s to left and right by turning H POS knob Press the HORIZONTAL MAG to set it to off Press and hold the INTEN MENU button select CRC LED ON and then GAMUT ON With another 75 Q cable connect the OUT 2 on the PSC1125 rear panel and the CH A on the waveform monitor rear panel WFM 1125 Option 0A 0B OC OD Service Manual Performance Verification 36 With a 50 Q cable connect the oscilloscope input and the CRCE OUT on the waveform monitor Set the input impedance of the oscilloscope to 1 M Confirm m The CRC LED momentarily lights each time the INPUT button is pressed m Concurrently a positive TTL level pulse 2 to 5 V is being output from the CRCE OUT 37 On the TSG1001 front panel press the SWEEP button to set the SWEEP to 100 and confirm m The GAMUT LED goes on 38 On the TSG1001 front panel press the COLOR BARS button to set the COLOR BAR to 100 and confirm m The GAMUT LED goes out Format modes Option 0D This test confirms that the format modes of Option OD are functioning correctly only Use the test hookup and equipment controls from the previous test 1 Download the multall dn signal set file supplied on the TG1001 Signal Library floppy disk with part number 063 3286 xx to the TSG1001 Refer to Downloading to the TSG1001 on page 44 for instructions On the TSG1001 front panel press the COLOR BARS button to set the COLOR BARS to 75 66599 1 Set the
105. scope 1 Tektronix TDS540A with P6139A To observe and measure many probe or equivalent output signals RS 232C cable with 25 pin 2 Tektronix part no 174 3882 00 Signal interconnections between D type connectors provided with the PSC1125 the TSG1001 and PSC1125 750 terminator o o Tektronix part no 011 0102 00 Signal interconnection BNC T connector 2 Tektronix part no 103 0030 00 Signal interconnection WFM 1125 Option OA OB OC OD Service Manual 5 1 Adjustment Procedures Table 5 1 Required equipment Cont Item Required precision Recommended Purpose BNC cable Impedance 75 Signal interconnection PC IBM PC compatible For downloading the signal set data to the TSG1001 Display Adjustment Adjustment timing After the removal and replacement of a display module due to electrical failure you must adjust the timing If brightness and contrast have become unsatisfactory you must adjust the timing Preparation To perform the display adjustments you must first remove the enclosure cabinet 1 Disconnect all cables from the waveform monitor and remove the two cabinet mounting screws shown in Figure 5 1 Slide the instrument forward out of the enclosure 2 Place all the variable resistors of the A5 display board at the middle See Figure 5 2 for the variable resistors Cabinet securing screws Ee O dp TY 2 i NEIE
106. scribed below supposes that the necessary utility is already stored in the directory sdp1000 NOTE For the details on installation the COM1000 the SDP1000 communica tion utility and downloading the signal set data to the TSG1001 refer to the manuals supplied with the TSG1001 and SDP1000 WFM 1125 Option 0A 0B OC OD Service Manual Performance Verification 1 Connect the TSG1001 and PC with a parallel interface cable And in the PC type cd sdp1000 lt Return gt com1000 lt Return gt lt Return gt DOWNLOAD screen appears 2 Insert the signal set floppy disk Multi dnl signal set file stored into the floppy disk driver on the PC And type a lt Return gt The screen for the download files appears 3 Select the Multi signal set file Then press lt Return gt Wait until the PC indicates that the download process has completed successfully Frequency response This test confirms the frequency response The following equipment is required Equipment Required HDTV signal generator TSG1001 and PSC1125 Oscilloscope Two parallel signal cables Two 75 Q BNC cables 50 Q BNC cable Connections Refer to Figure 4 2 for connections Using the parallel signal cables supplied with the PSC1125 connect between the G Y on the TSG1001 and Y on the PSC1125 and between the B Pb on the TSG1001 and Pg Pg on the PSC1125 Using the 75 2 BNC cable connect the OUTI connector on the PSC11
107. sories 7 2 WFM 1125 Option 0A 0B OC OD Service Manual 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 Read the General Safety Summary in other system manuals for warnings and cautions related to operating the system To Avoid Fire or Use Proper Power Cord Use only the power cord specified for this product and Personal Injury certified for the country of use Ground the Product This product is grounded through the grounding conductor of the power cord To avoid electric shock the grounding conductor must be connected to earth ground Before making connections to the input or output terminals of the product ensure that the product is properly grounded Observe All Terminal Ratings To avoid fire or shock hazard observe all ratings and markings on the product Consult the product manual for further ratings information before making connections to the product Do Not Operate Without Covers Do not operate this product with covers or panels removed Avoid Exposed Circuitry Do not touch exposed connections and components when power is present Do Not Operate With Suspected Failures If you suspect there is
108. ssociated with the displayed menu item Configure Menu This menu consists of general configuration menu items and operating modes which are changed infrequently If you press and hold the front panel INTEN MENU button the menu items are listed on the display If you turn the SELECT knob when the menu items are on display the high lighted box moves across the menu Press the SELECT button to select the desired parameter item it is highlighted to indicate that it takes effect For menu items which affect the whole hardware setting a bezel menu item prompts you to confirm your selection Select OK or CANCEL WFM 1125 Option OA OB OC OD Service Manual 2 13 Using the Menu To quit the menu mode press the INTEN MENU button again For example turn the GAMUT on by stepping through the menus as follows 1 D Press and hold the INTEN MENU button to display the Configure menu Turn the SELECT knob until GAMUT highlights Push the SELECT button to ON Push the INTEN MENU button again to turn off the menu readout without losing your selections For additional information on this menu refer to the WFM1125 Option OA 0B 0C User Manual DIAG CAL Menu There are following three ways to enter into the DIAG CAL mode Turn on the Power switch on the rear panel while holding down the STANDBY button on the front panel Press the INTEN MENU button while holding down the 5 th bezel button and then press the EXECUTE bezel but
109. surement modes displayed on an internal VGA display An external VGA display output is also provided The digital architecture of the waveform monitor allows you to save the displayed waveform to an internal memory In order to properly display intermittent events that may be missed in a single line select mode the waveform monitor has a persistence display feature combining information from many TV lines much like an analog waveform monitor Refer to Specifications for details of the waveform monitor performance Features The waveform monitor offers the following features m Supports the following system formats m Option 1035 60i 1035 59 941 1080 601 and 1080 59 941 m Option OB 720 60p and 720 59 94p m Option OC 1035 601 1035 59 94i 1080 601 1080 59 94i 720 60p and 720 59 94p m Option OD 1035 60i 1035 59 941 1080 601 1080 59 941 1080 501 720 60p 720 59 94p 1080 30sF 1080 29 97sF 1080 25sF 1080 24sF 1080 23 98sF 1080 24p and 1080 23 98p m Digital component video signal displays parade and vector modes m Save and Display feature that saves and recalls the currently displayed signal m CRC error detection m Gamut error detection m Infinite mode in persistence display that retains the image of transient signals m Overlay and Parade displays m Diamond Lightning and Bowtie displays W Four graticules for waveform display m Serial digital monitor output and CRC error monitor output m Analog external refer
110. te 95 97 Hz to 60 03 Hz 59 91 Hz to 59 97 Hz 48 024 Hz to 59 92 Hz 47 976 Hz to 48 024 Hz 47 928 Hz to 47 976 Hz Unknown field late Display Missing Reference Internal Detected Field Rate 59 97 Hz to 60 03 Hz 59 91 Hz to 59 97 Hz 23 988 Hz to 24 012 Hz 23 98 Hz to 23 988 Hz Unknown field late Display Missing Reference WFM 1125 Option 0A 0B 0C OD Service Manual 1 9 Specifications Table 1 9 RBG transcoder Characteristic Performance requirements Matrix coefficient SMPTE240M SMPTE274M SMPTE296M Reference information G Y 0 2266 Pp 0 4766 P B Y 1 826 P R Y 1 576 P G Y 0 1870 Pp 0 4678 P B Y 1 8558 Pp Y 1 575 Py Table 1 10 Component vector mode Characteristic Performance requirements Frequency Response Vertical Gain Error Horizontal Gain Error Magnification Display Table 1 11 Lightning and diamond mode Characteristic Performance requirements Vertical Gain Error Horizontal Gain Error Electronic Graticule Display Lightning Diamond Reference information gt 14 MHz lt 0 25 96 0 25 96 X5 and X10 Py Horizontal Pr Vertical Reference information 0 25 96 0 25 96 Y is displayed vertically Pp is displayed horizontally on top half of display P is displayed horizontally on bottom half of display GBR Deflection axis indicated WFM 1125 Option 0A 0B O
111. terface attached which enables the operator to make various settings Using this interface this device turns on off the unsurely data mask The 74 25 MHz clock Y Pb Pr and FRAME signals are input to the DEMUX circuit The CRCE signal is buffered resulting in output from the CRCE connector BNC through J290 This output signal can be monitored on the oscilloscope etc The CRCE signal is input to the A20 MAIN board through W110 in order to indicate CRCE errors WFM 1125 Option OA OB OC OD Service Manual 3 1 Theory of Operation DEMUX A20 Main board 3 2 LINE SELECT FIFO DOUBLER TRANSCODER INTERPOLATE After output from HK 102 HK 202 at a data rate of 74 25 MHz the signal is input to the DEMUX circuit resulting in drop to a data rate of 37 125 MHz The output signals are Y_EVEN 10 bit wide Y_ODD 10 bit wide Pb 10 bit wide Pr 10 bit wide 37 125 MHz consecutive clocks STOP_CLK controlled by signal STOP from the A20 MAIN board and LINE_NUMN which indicates the start of the frame The Y_EVEN lt 9 0 gt Y_ODD lt 9 0 gt Pb lt 9 0 gt and Pr lt 9 0 gt signals are buffered by U200 U210 U220 U230 and U240 respectively They are input to the A20 MAIN board through W100 and W110 LINE SELECT consists of two major components One is a counter used to count the lines up to the current line number from the LINE_NUMN signal which indicates the start of the frame generated in the A10 INPUT board
112. the grounded earthing contact of the power plug WARNING The power input plug must be inserted only in a mating receptacle with a grounding contact where earth ground has been verified by a qualified service person Do not defeat the grounding connection Any interruption of the grounding connection can create an electric shock hazard For electric shock protection the grounding connection must be made before making connection to the instrument s input or output terminals A power cord with the appropriate plug is supplied with each waveform monitor Table 2 1 gives the color coding of the conductors in the power cord Table 2 1 Power cord conductor identification Conductor Color Alternate color Ungrounded Line Brown Black Grounded Neutral Light Blue White Grounded Earthing Green Yellow Green WFM 1125 Option OA OB OC OD Service Manual 2 9 Preparation for Use Operating Voltage Memory Backup Power This waveform monitor operates with any line voltage from 90 to 240 VACrms with any line frequency from 48 to 63 Hz No fuse is provided with this waveform monitor The CPU module with on board battery allows the WFM 1125 Digital Television Waveform Monitor Option 0A 0B OC OD to retain some types of data upon loss of the AC power source The stored adjustment constants saved front panel settings current front panel settings instrument status and waveforms saved in memory are retained The on board b
113. ting the monitor screen with a lint free cloth dampened with either isopropyl alcohol or preferably a gentle general purpose detergent and water solution CAUTION To prevent getting moisture inside the waveform monitor during external cleaning use only enough liquid to dampen the cloth or applicator Inspection Interior To access the inside of the waveform monitor for inspection and cleaning refer to the Removal and Installation Procedures in this section Inspect the internal portions of the waveform monitor for damage and wear using Table 6 3 as a guide Defects found should be repaired immediately If any electrical module is repaired or replaced refer to Section 5 to see if it is necessary to adjust the waveform monitor CAUTION To prevent damage from electrical arcing ensure that circuit boards and components are dry before applying power to the waveform monitor Table 6 3 Internal Inspection check list Item Circuit boards Resistors Inspect for Loose broken or corroded solder connections Burned circuit boards Burned broken or cracked circuit run plating Burned cracked broken blis tered condition Repair action Remove failed module and replace with a fresh module Remove failed module and replace with a fresh module Solder connections Cold solder or rosin joints Resolder joint and clean with isopropyl alcohol Capacitors Semiconductors Damaged or le
114. tion describes the electrical operation of the WFM 1125 Digital Television Waveform Monitor Option 0A 0B OC OD using the major circuit blocks or modules A15 Relay amp Sync board CHANNEL SELECTOR SYNC SEPARATOR A10 Input board HK 102 HK 202 After input through CH A or CH B the 1 48 Gbps serial signal is input to K200 through A15 Relay amp Sync board J240 or J230 After either one is selected the serial signal input to the HK 102 HK 202 serial parallel conversion module on the A10 INPUT board through J210 The EXT REF signal is input the U130 buffer amplifier through J220 or J250 The buffered signal is input the U100 and the U200 through two different low pass filters Although the U100 and the U200 are the NS National Semiconduc tor LM1881 which is sync separator the functions of V sync and the odd even are not used in this instrument The U100 generates the composite NTSC sync and the U200 generates the composite HDTV sync The composite sync signals are input to 10 0200 through the W100 The input 1 48 Gbps serial data is converted into the Y signal 10 bit wide data and the Pb Pr multiplex signal 10 bit wide at a data rate of 74 25 MHz The module also generates the 74 25 MHz clock and the FRAME and CRCE signals The FRAME signal indicates distinction between the HD horizontal synchro nization and VD vertical synchronization numbers The CRCE signal indicates occurrence of a CRC error This module has a CPU in
115. to configure A20U600 i e to program FPGA ADDER TTF Resident 10K30 config files TRANCE TTF TRANCE9 TTF Used to configure A20U200 and A10U200 i e to program FPGA When color SMPTE 240M and resol d rng RESOLU TION When color SMPTE 240M and resol d rng D RANGE CCIR TTF When color SMPTE 274M and resol d rng RESOLU TION WFM 1125 Option 0A 0B OC OD Service Manual Firmware Updates Table 6 5 Floppy disk s file list Cont Type File name CCIR9 TTF Descriptions When color SMPTE 274M and resol d rng D RANGE 10K10 config files Used to configure A20U100 A20U250 A20U350 A20U430 A20U470 A20U500 and A20U580 i e to program FPGA LINES1 TTF LINES2 TTF LINES3 TTF For LINES 1LINE or FIELD display For LINES 2LINE display For LINES parade or overlay display 3FIELD TTF For parade display Field LINESEL1 TTF LINESEL2 TTF LINESEL3 TTF For LINE SELECT 1LINE display For LINE SELECT 2LINE display For SELECT parade or overlay display STATUS TTF When STATUS is displayed BOWTIE TTF DIAMOND TTF LIGHTEN TTF X table For Bowtie display For Diamond display For Lightning display Loaded to A20U425 1 1125 1F_750 1L 1125 1 field display 1125 lines 1 field display 750 lines 1 line display 1125 lines 1L 750 1 line display 750 lines 1H 1LS 1125 1LS 750 1LSH 1 line display and H mag 1 line select display 1
116. ton when the DIAG CAL menu appears Turn on the Power switch on the rear panel when the firmwares have not been downloaded yet to the internal modules NOTE If you enter into the DIAG CAL mode through the first or third ways the waveform monitor is not configured correctly So the I O test in the MEMORY test will report a FAIL even if the H W is correct When you enter into the DIAG CAL mode the DIAG CAL menu appears at the far right of the screen VGA monitor WFM 1125 Option 0A 0B OC OD Service Manual Using the Menu DIAG CAL EXECUTE DIAG CAL CIRCLE VERSION GRADIATION WHITE DIAG MEMORY INTEN MENU button to exit GRID PLD DISPLAY X Y RAM HK102 FIFO ALL STANDBY button to exit STANDBY button Figure 2 7 DIAG CAL menu structure To select DIAG CAL menu item press the corresponding bezel button and press the STANDBY button to go back to the previous menu When you select a menu item to run the diagnostic or calibration routine the menu disappears and corresponding screes appears Press the STANDBY button to exit that screen and to restore the menu WFM 1125 Option Service Manual 2 15 Using the Menu 2 16 WFM 1125 Option 0A 0B OC OD Service Manual 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
117. tor Option 0A 0B OC OD to fit your requirements At Depot Service Tektronix offers several standard priced adjustment calibra tion and repair services WFM 1125 Option OA OB OC OD Service Manual xi Introduction xii Self Service m A single repair and or adjustment m Calibrations using equipment and procedures that meet the traceability standards specific to the local area m Annual maintenance agreements that provide for either calibration and repair or calibration only of the waveform monitor Of these services the annual maintenance agreement offers a particularly cost effective approach to service for many owners of the WFM 1125 Digital Television Waveform Monitor Option Such agreements can be purchased to span several years On Site Service The annual maintenance agreement can be purchased with on site service with repair and calibration done at your facility This service reduces the time your waveform monitor is out of service when calibration or repair is required Tektronix supports repair to the module level by providing Module Exchange and Module Repair and Return Module Exchange This service reduces down time for repair by allowing you to exchange most modules for remanufactured ones Tektronix ships you an updated and tested exchange module from the Beaverton Oregon service center typically within 24 hours Each module comes with a 90 day service warranty Module Repair and Ret
118. tor is displayed on the monitor Finish 1 Press and hold the INTEN MENU button and select FACTORY EXECUTE OK WFM 1125 Option Service Manual 4 25 Performance Verification 4 26 WFM 1125 Option 0A 0B OC OD Service Manual Adjustment Procedure Adjustment Procedures This section contains information needed to adjust the WFM 1125 Digital Television Waveform Monitor Option 0A 0B OC OD Adjustment in the waveform monitor are limited to the visual characteristics linearity size focus contrast and brightness of the display analog output level and the power supply voltage Requirements for Performance Before you do this procedure you need to address the following requirements Personnel This procedure is only to be performed by trained service technicians Warm Up Period This waveform monitor requires a 20 minute warm up time in a 420 C to 30 C environment before it is adjusted Access When adjusting the display output level and the power supply voltage you need to remove the cabinet Equipment Required Table 5 1 lists the equipment required to adjust the output level and power supply voltage No equipment is required for the display adjustment Table 5 1 Required equipment Item Required precision Recommended equipment Purpose HDTV signal generator 1 Latest modification must be Tektronix TSG1001 and Signal source installed PSC1125 Upgraded by 040 1649 00 upgrade kit Oscillo
119. udio output Characteristic Performance requirements Format Impedance Return Loss Amplitude 1 0V 10 DC Offset 0 0 V 50 mV Rise Fall Time 30 ns to 44 ns Sampling Rate Reference information SMPTE 240M SMPTE 274M or SMPTE 296M Option 0D SMPTE 240M or SMPTE 274M Option OA or 240M 274M format mode of Option 0C SMPTE 296M Option 0B or 296M format mode of Option 0C Luminance Channel Y 9 bit Chrominance Channel Pp Py 10 bit 75 Q Unbalanced tri level sync on Y channel Reference information ANSI 54 40 75 Q Unbalanced gt 25 dB at 0 1 MHz to 6 MHz 48 kHz locked to video signal Phase Lock Time lt 15s WFM 1125 Option OA OB OC OD Service Manual 1 7 Specifications Table 1 5 Stripped AES EBU digital audio output 1 Cont Characteristic Output Channel Output Control Performance requirements Reference information 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 If the Audio Data Packet does not exist in the serial signal the corresponding output is disabled Available only for Option 0A 240M 274M fomat mode of Option 0 or Interlace and Segment Frame modes of Option 0D Table 1 6 External reference input Characteristic Sync Format DC Input Impedance Return Loss Display Resolution Uncertain Time Width Table 1 7 Format display Performance requirements gt 1
120. urn This service returns to you within 10 days the same module that you shipped to Tektronix The module shipped is repaired tested and returned to you from the Beaverton Oregon service center It is not updated to match current modules of the same type Again each module comes with a 90 day service warranty For More Information Contact your local Tektronix service center or sales engineer for more information on any of the repair or adjustment services just described WFM 1125 Option 0A 0B OC OD Service Manual Introduction Before You Begin This document is for servicing the WFM 1125 Digital Television Waveform Monitor Option To prevent injury to yourself or damage to the waveform monitor do the following tasks before you attempt service m you are a qualified service person m Read the Safety Summary found at the beginning of this document m Read Service Strategy in this section and Supplying Operating Power in section 2 When using this document for servicing be sure to heed all warnings cautions and notes WFM 1125 Option 0A 0B 0C OD Service Manual xiii Introduction xiv WFM 1125 Option 0A 0B OC OD Service Manual Specifications Product Description The WFM 1125 Digital Television Waveform Monitor Option 0A 0B 0C OD Option 0A 0B 0C 0D measures and displays HDTV serial digital signals The waveform monitor is a fully digital waveform monitor with a variety of standard mea
121. utput Adjustment 2 0 0 eee 5 5 Voltage Adjustment ua au hee 5 11 MAINTENANCE a ee koe eile 6 1 Related Maintenance Procedures 6 1 Prepar tionzz ie 22 ii daa 6 2 Inspection and Cleaning 0 0 eee eI 6 3 Removal and Installation Procedures 6 7 Firmware Updates 6 9 Preparation tud a metu Teu ur Pp 6 9 Floppy disks zi sse et LL ELEC M e EHE ELO ER US 6 10 Update Proced ren POE ES 6 12 Troubleshooting 6 15 Diagnostics sf veio Ske S aaa MOD ND EN REUS 6 15 Options and Accessories 7 1 Option OA Description sc cos 7 1 Option OB Description asss cece ee eens 7 1 Option OC Description uu as ss ass us sp pu eee tees 7 1 UN CCESSOTIES A eo ee EE 7 1 Electrical Parts List cio o as 8 1 Diagrams nee a P eg 9 1 Symbols usas pi ehh ai a 9 1 Mechanical Parts List 10 1 Parts Ordering Information 0 0 10 1 Using the Replaceable Parts List 10 2 WFM 1125 Option 0A 0B OC OD Service Manual Table of Contents List of Figures Figure 2 1 Figure 2 2 Figure 2 3 cabinet Figure 2 4 Figu
122. verlay 1 Field 3 Field 2 0 us div 0 1 us div MAG ON Refreshed 1 5 17 line rate of applied video sync 4 0 us div 0 2 us div MAG ON Refreshed 1 11 line rate of applied video sync 6 0 us div Refreshed 1 17 line rate of applied video sync 2 0 us div 0 1 us div MAG ON Refreshed 1 17 line rate of applied video sync Equal to the field rate of applied video sync Equal to the field rate of applied video sync 1 4 WFM 1125 Option 0A 0B OC OD Service Manual Specifications Table 1 2 Horizontal deflection system Cont Characteristic Option OD Interlace mode Performance requirements Reference information 1 Line 3 0 us div 0 1 us div MAG ON Refreshed 1 4 line rate of applied video sync 2 Lines 6 0 us div 0 4 us div MAG ON 1035 60i 1035 59 94i 1080 60i 1080 59 94i 6 0 us div 1 0 us div MAG ON 1125 50i Refreshed 1 8 line rate of applied video sync 3 Lines 9 0 us div Refreshed 1 13 line rate of applied video sync Overlay 3 0 us div 0 1 us div MAG ON Refreshed 1 13 line rate of applied video sync 1 Field Equal to the field rate of applied video sync 2 Field Equal to the field rate of applied video sync 3 Field Equal to the field rate of applied video sync Option 0D Segment Frame mode 1 Line 3 0 us div 0 1 us div MAG ON Refreshed 1 4 line rate of applied video sync 2 Lines 6 0 us div 0 4 us div MAG ON 1080 30sF 1080 29 97sF 6 0 us div
123. x Gain VEC100Y1 Vector display 100 Color bar VEC100Y5 Vector display 100 Color bar with 5x Gain VEC100YA Vector display 100 Color bar with 10x Gain VEC75Y1 Vector display 75 Color bar VEC75Y5 Vector display 75 Color bar with 5x Gain VEC75YA Vector display 75 Color bar with 10x Gain WFM 1125 Option OA OB OC OD Service Manual Firmware Updates Table 6 5 Floppy disk s file list Cont Type File name GF9101 coefficient files Descriptions A20U260 A20U270 and A20U280 digital filter coefficients For every mode there are two types of files available files for Y and those for Pb Pr Examples FLY_Y_RE TXT FL_C_RE TXT Note that if MENU gt WFM VECT gt wfm as gt RGB or GBR has been selected files for Y are used for the three GF9101 s MENU gt Interpo gt ON MENU gt Filter gt Flat FL LLTXT Non field mode in Line Select mode FL HM TXT When HMag is displayed in response to the pressing of the Horizontal Mag button except in the Line Select mode FL RE TXT Other than above MENU gt Interpo gt ON MENU gt Filter gt LPF LP LI TXT Non field mode in Line Select mode LP HM TXT When HMag is displayed in response to the pressing of the Horizontal Mag button except in the Line Select mode LP RETXT Other than above ULP Y RE TXT For Diamond display 063 3250 XX Codes APPLI HEX 68K code Utilities LOADOD EXE PC software for Option 0D 8K config files Used

Service Manual WFM 1125 Digital Television Waveform Monitor

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