Gebruiksaanwijzing /service van het product TPG20 van de fabrikant Tektronix
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Service Manual TPG20 T est Pattern Generator 070-9035-00 Please check for change information at the rear of this manual. First Printing May 1994.
Copyright T ektronix, Inc., 1993,1994. All rights reserved. Printed in U.S.A. Information in this publication supersedes that in all previously pub- lished material. Specifications and price change privileges reserved. The following are registered trademarks: TEKTRONIX and TEK.
W ARRANTY T ektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1) year from the date of shipment.
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TPG20 Service i T able of Contents Section 1 Performance Check and Calibration Procedur es 1–1 . . . . . . . . . . . . . Recommended Equipment List 1–1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electrical Instruments 1–1 .
Contents ii TPG20 Service.
TPG20 Service iii Service Safety Summary Only qualified personnel should perform service procedures. Read this Service Safety Summary before performing any service procedures. Safety T erms and Symbols These terms may appear in this manual: W ARNING. W arning statements identify conditions or practices that could result in injury or loss of life.
Service Safety Summary iv TPG20 Service T o A void Fire or Shock Hazards: Do not perform internal service or adjustments of this product unless another person capable of rendering first aid and resuscitation is present. Before servicing, remove jewelry such as rings, watches, and other metallic objects.
TPG20 Service v Preface This manual provides a limited set of service information for the TEKTRONIX TPG20 T est Pattern Generator and is intended for use by personnel who are qualified to work inside the instrument. There is a separate manual that is included with the instrument which provides operating instructions for the generator .
Preface vi TPG20 Service.
Section 1.
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TPG20 Service 1–1 Section 1 Performance Check and Calibration Procedures This section consists of two separate procedures. The first, a Performance Check, is used to determine compliance with the Performance Requirements in the Specification.
Performance Check and Calibration Procedures 1–2 TPG20 Service 2. T est Oscilloscope V ertical Amplifier: 30 MHz Bandwidth, 1 mV Sensitivity . T ime Base: 10 ns/div to 5 ms/div sweep speeds, triggering to 5 MHz. For example: a TEKTRONIX T AS 465 Oscilloscope.
Performance Check and Calibration Procedures TPG20 Service 1–3 7. Frequency Counter Range: 10 Hz to 135 MHz. Accuracy: " 0.001%. Ratio architecture. For example: T ektronix DC 5009 installed in a TM 5000-Series Power Module. 8. V ideo Amplitude Calibrator Signal, adjustable square wave 0.
Performance Check and Calibration Procedures 1–4 TPG20 Service 13. Coaxial Cable Three 75 cables required, two 50 cables required. For example: 75 – 42-inch (T ektronix Part No. 012–0159–00). 50 – 42-inch (T ektronix Part No.
Performance Check and Calibration Procedures TPG20 Service 1–5 Performance Check 1. V isual Inspection a. Connect the TPG20 to a power source, and turn the power on. b. Check – the front panel LCD contrast. The readout should be easily visible under normal lighting conditions.
Performance Check and Calibration Procedures 1–6 TPG20 Service b. Connect the equipment as shown in Figure 1–2, using the TSG–170A and 1780R. c. V erify the presence of a standard NTSC Black Burst signal with the waveform monitor . d. Set the frequency counter Function to Ratio B/A, and A VG set to 10 7 .
Performance Check and Calibration Procedures TPG20 Service 1–7 P AL 4.43361875 MHz 1 Hz f. Set TPG20: FORMA T – 625/50 COMPOSITE P AL/D2 Groups; FLA T FIELDS; BLACK 625 P AL/D2 g. Connect the equipment as shown in Figure 1–2, using the TSG–271 and 1781R.
Performance Check and Calibration Procedures 1–8 TPG20 Service Groups: LINEARITY ; RAMP 100% 625 P AL/D2 h. Use VM700A to check for a composite video signal of 1.0V ± 1.0% on both of the TPG20 B Analog Outputs. i. Set TPG20: FORMA T 625/50 COMPONENT D1/YPrPb Groups: LINEARITY ; RAMP 100% 625/50 D1/YPrPb j.
Performance Check and Calibration Procedures TPG20 Service 1–9 4. Bandwidth 6.5 MHz ± 0.1 dB (NTSC and P AL) a. Set TPG20: FORMA T 625/50 COMPONENT RGB Groups: SWEEPS; LINE SWEEP 6.5 625 RGB b. Using Channel A of the 1781 waveform monitor , check flatness of the swept frequency on all six of the TPG20 Analog Outputs ± 0.
Performance Check and Calibration Procedures 1–10 TPG20 Service b. T est both B Analog Outputs on the TPG20 using the VM700A DGDP measurement mode. Differential Gain < 0.75% Dif ferential Phase < 0.5 °. c. Set TPG20: FORMA T 525/60 COMPOSITE NTSC/D2 Groups: LINEARITY ; MODULA TED RAMP 525 NTSC/D2 d.
Performance Check and Calibration Procedures TPG20 Service 1–1 1 f. Select H–PHASE on the TPG20 and rotate knob to verify that horizontal phase can be adjusted at least 63.486 ns ( ± one half line). Return setting to 0 ns. 9. V ertical Phase Adjustment – 1 Frame – NTSC a.
Performance Check and Calibration Procedures 1–12 TPG20 Service e. Set TPG20 Genlock to On. Select Lock on: Sync Lock. V erify that genlock occurs within 20 seconds and Genlock light is on (not blinking). f. Select H–phase on the TPG20 and rotate knob to verify that horizontal phase can be adjusted at least ± one half line.
Performance Check and Calibration Procedures TPG20 Service 1–13 Group: BARS; EBU COLOR BARS 625 P AL/D2 Set: D2 Output Serial b. Connect TPG20 SERIAL DIGIT AL OUTPUT to 1731D Serial Input and 1731D DAC Out to the 1781, which is set to V ideo Monitor display .
Performance Check and Calibration Procedures 1–14 TPG20 Service b. Connect TPG20 SERIAL DIGIT AL OUTPUT to 1730D Serial Input and 1730D DAC Out to the 1780, set to video monitor display . c. Check – for correct video signal display on 1730D and 1780.
Performance Check and Calibration Procedures TPG20 Service 1–15 c. Check – WFM601i for correct video signal display . Repeat check for the second TPG20 SERIAL DIGIT AL OUTPUT . 19. Check P AL 625/50 Component Digital Serial a. Set TPG20: FORMA T 625/50 COMPONENT D1/YPrPb Groups: BARS; EBU COLOR BARS 625 D1/YPrPb b.
Performance Check and Calibration Procedures 1–16 TPG20 Service d. Connect the RF Input cable to the RF Output on the RF Bridge. e. Select Demod/tracking generator on the spectrum analyzer and turn on the analyzer T racking Generator . f. Set the spectrum analyzer tracking generator Fixed Level to 0.
Performance Check and Calibration Procedures TPG20 Service 1–17 22. Memory T ests a. If not already done, load the following patterns into the 9 TPG20 memory locations. Make sure genlock is off. 1. 625/50 Composite EBU Bars 2. 625/50 Composite 100% Bars 3.
Performance Check and Calibration Procedures 1–18 TPG20 Service where ESC is the escape key (1B hex), n is a number from 1 to 9. ( ASCII ) and <CR> is carriage return. Ensure that the unit recalls the correct memory settings. If a memory is successfully recalled, then the unit echoes the following data, if not, no data is returned.
Performance Check and Calibration Procedures TPG20 Service 1–19 Adjustment Procedure Remove TPG20 top cover to gain access to adjustments and test links. 1. LCD Contrast Adjustment a. Connect the TPG20 to an ac power source, and turn the power on. b.
Performance Check and Calibration Procedures 1–20 TPG20 Service .
Performance Check and Calibration Procedures TPG20 Service 1–21 T able 1–1: A vailable TPG20 Crystal Options T ype Frequency Usage Format 0 13.50 MHz 625/525 D1 1 17.73447 MHz P AL & SECAM 4fsc 2 14.318180 MHz NTSC 4fsc 3 14.328225 MHz P AL N 4fsc 4 14.
Performance Check and Calibration Procedures 1–22 TPG20 Service Repeat parts d through f of this step for the following formats using the Groups: FLA T FIELDS; WHITE 100% in each format.
Performance Check and Calibration Procedures TPG20 Service 1–23 j. Press the TPG20 SELECT button to save this setting. 7. Load Factory Settings a. Press the TPG20 SYSTEM button to select Set:Factory Presets b. Press the TPG20 SELECt button to load factory settings.
Performance Check and Calibration Procedures 1–24 TPG20 Service 9. Frequency Response Adjustment a. Set TPG20: FORMA T 625/50 COMPONENT RGB Groups: SWEEPS; LINE SWEEP 6.5 625 RGB b. Connect the TPG20 A Analog Output to the 1781R set to waveform monitor display .
Performance Check and Calibration Procedures TPG20 Service 1–25 e. Remove the shorting link (jumper) from LK2. 1 1. Genlock NTSC and P AL a. Using the Black/Sync signal of the TSG–170A – loop through the Reference Input on the TPG20 to CH 1 on the oscilloscope.
Performance Check and Calibration Procedures 1–26 TPG20 Service o. Set TPG20: FORMA T 625/50 COMPONENT RGB Groups: FLA T FIELDS; WHITE 100% 625 RGB p. Adjust – R V12 for minimum run through of the two signals as observed on the oscilloscope. (note: this adjustment has no effect if precision crystals are installed).
Section 2.
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TPG20 Service 2–1 Section 2 Replaceable Parts List This section contains a list of the components that are replaceable for the TPG20. Use this list to identify and order replacement parts. This Replaceable Parts List combines electrical and mechanical parts instead of putting them into separate lists.
Replaceable Parts 2–2 TPG20 Service A A RMMG 2021004A 1 lU FRAME 4 FIELDtRACK MOUNTS P AINTED & SCREENED A A RMH3 RCG–3 4 CARD GUIDES–RICHCO RCG–3 A A RMF9 06 1 F AN 40mm 12V DC SANYO 109P0412F602 TEK P/N 1 19–4800–00 A A RMGl M4x2.5P 4 SCREW M4x2.
Replaceable Parts TPG20 Service 2–3 A A N4 RMI3 74HCT57 1 IC 74HCT574 A A N5 RMI3 74HCT57 1 IC 74HCT574 A A Ql RMQ3 BSX20 1 TRANSISTOR BSX20 A A Rl RMEl lK 1 RESISTOR SM lK 1206.125W 2% NBT A A R2 RMEl lK 1 RESISTOR SM lK 1206.125W 2% NBT A A R3 RME0 470R 1 RESISTOR SM 1206 .
Replaceable Parts 2–4 TPG20 Service A A RMSl OLP6 1 LIGHT PIPE FOR 6mm KEYCAP LICON SERIES 39 SWITCH A A RMSl OLGL6 1 CAP 6mm LIGHT GREY LIT LICON SERIES 39 SWITCH A A RMG8 1 1 2 SP ACER–LICON 39 .
Replaceable Parts TPG20 Service 2–5 Assembly BOM: SAAG 2021580A TPG20 CONNECT OR PLA TE ASSEMBL Y No Qty S&W PartId S&W Description 1 1 RMK0 07 CON/M 2W STR GOLD L/RP 6410–22–29–2021 2.
Replaceable Parts 2–6 TPG20 Service C23 B0 22p 1 CAP ACITOR SM 22pF C24 B0 22p 1 CAP ACITOR SM 22pF C25 Bl 100n 1 CAP ACITOR SM 100nF 1206 X7R 10% NBT TEK P/N 283–51 14–00 C26 D5 E22/16 1 CAP EL.
Replaceable Parts TPG20 Service 2–7 C81 B0 100p 1 CAP ACITOR SM 100pF C82 Bl 10n 1 CAP ACITOR SM 10nF 1206 X7R 10% NBT C83 B0 15p 1 CAP ACITOR SM 15pF C84 B0 15p 1 CAP ACITOR SM 15pF C85 Bl 10n 1 CA.
Replaceable Parts 2–8 TPG20 Service C139 Bl 100n 1 CAP ACITOR SM 100nF 1206 X7R 10% NBT TEK P/N 283–5114–00 C140 Bl 100n 1 CAP ACITOR SM 100nF 1206 X7R 10% NBT TEK P/N 283–5114–00 C141 Bl 10.
Replaceable Parts TPG20 Service 2–9 C197 Bl 100n 1 CAP ACITOR SM 100nF 1206 X7R 10% NBT TEK P/N 283–5114–00 C198 Bl 100n 1 CAP ACITOR SM 100nF 1206 X7R 10% NBT TEK P/N 283–5114–00 Cl99 Bl 10.
Replaceable Parts 2–10 TPG20 Service C255 Bl 10n 1 CAP ACITOR SM 10nF 1206 X7R 10% NBT C256 Bl 10n 1 CAP ACITOR SM 10nF 1206 X7R 10% NBT C257 Bl 100n 1 CAP ACITOR SM 100nF 1206 X7R 10% NBT TEK P/N 2.
Replaceable Parts TPG20 Service 2–1 1 D22 Q0 5050G 1 LED HLMP 5050 GREEN D23 Q0 5050G 1 LED HLMP 5050 GREEN D21 Q6 BA T54C 1 SM DUAL DIODE SOT 23 BA T54C D25 Q6 BA T54C 1 SM DUAL DIODE SOT 23 BA T54.
Replaceable Parts 2–12 TPG20 Service N4 I6 622562 1 IC RAM 32kx8 80nS HIT HM62256LP–8 TEK P/N 156–3571–00 N5 I3 74HCT574 1 IC 74HCT574 N6 I3 74HCT04 1 IC 74HCT04 N7 I3 74HCT574 1 IC 74HCT574 N.
Replaceable Parts TPG20 Service 2–13 N62 I3 74HC4538 1 IC 74HC453B N63 Jl 78L05 1 IC 78L05 5V 100mA REGULA T OR N64 I8 EL2120 1 SM IC EL2120 TEK P/N 156–6415–01 N65 U0 EL2120 1 SM IC EL2120 TEK .
Replaceable Parts 2–14 TPG20 Service N153 I5 10115 1 IC 10115 N154 I3 74HC4052 1 IC 74HC4052 N155 I5 10125 1 IC MC10125L N156 I4 74F00 1 IC 74F00 N157 I4 74F74 1 IC 74F74 (NOT TI) N158 I7 A TV750 1 .
Replaceable Parts TPG20 Service 2–15 N416 I6 53051P–34 1 IC HM53051P–34 FIELD DELA Y TEK P/N 156–6914–00 N417 I6 53051P–34 1 IC HM53051P–34 FIELD DELA Y TEK P/N 156–6914–00 N418 I6 5.
Replaceable Parts 2–16 TPG20 Service R26 E0 100R 1 RESISTOR SM 1206 .125W 2T OL NBT 100R R27 E0 100R 1 RESISTOR SM 1206 .125W 2T OL NBT 100R R28 E0 100R 1 RESISTOR SM 1206 .125W 2T OL NBT 100R R29 E0 100R 1 RESISTOR SM 1206 .125W 2T OL NBT 100R R30 E0 100R 1 RESISTOR SM 1206 .
Replaceable Parts TPG20 Service 2–17 R84 E0 220R 1 RESISTOR SM 1206 .125W 2T OL NBT 220R R85 El lK5 1 RESISTOR SM lK5 1206 .125W 2% NBT R86 R8 75R0 1 RES M/FLM 0.25W 0.5% 75R0 R87 E0 100R 1 RESISTOR SM 1206 .125W 2T OL NBT 100R R88 R8 75R0 1 RES M/FLM 0.
Replaceable Parts 2–18 TPG20 Service R142 E4 22K 1 RESIST OR SM 22K 1206 .125W 2% NBT R143 El lK 1 RESIST OR SM lK 1206 .125W 2% NBT R144 El lK 1 RESIST OR SM lK 1206 .125W 2% NBT R145 El lK 1 RESIST OR SM lK 1206 .125W 2% NBT R146 El 10K 1 RESISTOR SM 10K 1206 .
Replaceable Parts TPG20 Service 2–19 R200 E0 150R 1 RESISTOR SM 1206 .125W 2T OL NBT 150R R201 El 2K2 1 RESISTOR SM 2K2 1206 .125W 2% NBT R202 E0 470R 1 RESISTOR SM 1206 .125W 2T OL NBT 470R R203 E0 47R 1 RESISTOR SM 1206 .125W 2T OL NBT 47R R204 El 100K 1 RESISTOR SM 100K 1206 .
Replaceable Parts 2–20 TPG20 Service R262 El 4K7 1 RESISTOR SM 4K7 1206 .125W 2% NBT R263 E4 22K 1 RESIST OR SM 22K 1206 .125W 2% NBT R264 El 100K 1 RESISTOR SM 100K 1206 .125W 2% NBT R265 E0 330R 1 RESISTOR SM 1206 .125W 2T OL NBT 330R R266 El 4K7 1 RESISTOR SM 4K7 1206 .
Replaceable Parts TPG20 Service 2–21 R326 El lK 1 RESIST OR SM lK 1206 .125W 2% NBT R327 El lK 1 RESIST OR SM lK 1206 .125W 2% NBT R328 E4 lM 1 RESISTOR SM lM 1206 .125W 2% NBT R329 E0 470R 1 RESISTOR SM 1206 .125W 2T OL NBT 470R R330 E0 75R 1 RESISTOR SM 1206 .
Replaceable Parts 2–22 TPG20 Service SN3 K8 28 1 SOCKET DIL LOW PROFILE 28 W A Y (0.6”) SN4 K8 28 1 SOCKET DIL LOW PROFILE 28 W A Y (0.6”) SN13 K8 28 1 SOCKET DIL LOW PROFILE 28 W A Y (0.6”) SN14 K8 28 1 SOCKET DIL LOW PROFILE 28 W A Y (0.6”) SN15 K8 28 1 SOCKET DIL LOW PROFILE 28 W A Y (0.
Replaceable Parts TPG20 Service 2–23 X2 RMX3 04 1 XT AL 3.686400 MHz30pF–HC18/U X3 RMX7 11 1 XT AL 13.5MHz 15ppm HC42 X4 RMX7 05 1 XT AL 17.73447 MHz 30pF HC43/U X5 RMX7 04 1 XT AL 14.31818 MHz 30pF HC43/U X7 RMX7 16 1 CR YST AL TCXO 14.318180 MHz QC6313/lA–lA lppm X8 RMX7 17 1 CR YST AL TCXO 17.
Replaceable Parts 2–24 TPG20 Service 5 C9, C14, 022–008 .22UF 100V CAP RAD POL YE 10mm C17, C20 1 C16 022–016 220pF 1KV CAP HV DISC CERAM 3 C3, C4, C5 022–021 4700pF 250V CAP CLASS Y TYP WY 1 C8 022–002 .01uF 1KV CAP CERAMIC 2 C1, C2 022–022 .
Section 3.
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3–1 TPG20 Service Section 3 Diagrams/Circuit Board Illustrations.
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T est Pattern Generator Board .
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+12V L2 D6 LINE NEUTRAL COMMON F1 1 AMP C1 0.1UF C2 0.1UF C3 4700PF C4 4700PF C5 4700PF R2 15 L1 UH C6 100UF C7 100UF R12 150K 1W B1 D1 R1 10K 5W C8 0.
Een belangrijk punt na aankoop van elk apparaat Tektronix TPG20 (of zelfs voordat je het koopt) is om de handleiding te lezen. Dit moeten wij doen vanwege een paar simpele redenen:
Als u nog geen Tektronix TPG20 heb gekocht dan nu is een goed moment om kennis te maken met de basisgegevens van het product. Eerst kijk dan naar de eerste pagina\'s van de handleiding, die je hierboven vindt. Je moet daar de belangrijkste technische gegevens Tektronix TPG20 vinden. Op dit manier kan je controleren of het apparaat aan jouw behoeften voldoet. Op de volgende pagina's van de handleiding Tektronix TPG20 leer je over alle kenmerken van het product en krijg je informatie over de werking. De informatie die je over Tektronix TPG20 krijgt, zal je zeker helpen om een besluit over de aankoop te nemen.
In een situatie waarin je al een beziter van Tektronix TPG20 bent, maar toch heb je de instructies niet gelezen, moet je het doen voor de hierboven beschreven redenen. Je zult dan weten of je goed de alle beschikbare functies heb gebruikt, en of je fouten heb gemaakt die het leven van de Tektronix TPG20 kunnen verkorten.
Maar de belangrijkste taak van de handleiding is om de gebruiker bij het oplossen van problemen te helpen met Tektronix TPG20 . Bijna altijd, zal je daar het vinden Troubleshooting met de meest voorkomende storingen en defecten #MANUAl# samen met de instructies over hun opplosinge. Zelfs als je zelf niet kan om het probleem op te lossen, zal de instructie je de weg wijzen naar verdere andere procedure, bijv. door contact met de klantenservice of het dichtstbijzijnde servicecentrum.
