Tektronix TPG20 Manuale Utente

Service ManualTPG20Test Pattern Generator070-9035-00Please check for change information at the rearof this manual.First Printing May 1994

PrefaceviTPG20 Service

+12VL2D6LINENEUTRALCOMMONF11 AMPC10.1UFC20.1UFC34700PFC44700PFC54700PFR215L1UHC6100UFC7100UFR12150K1WB1D1R110K5WC80.01UFCR712TR1AL3C154700UFC18C122200

Section 1

TPG20 Service1–1Section 1Performance Check and Calibration ProceduresThis section consists of two separate procedures. The first, a PerformanceCheck

Performance Check and Calibration Procedures1–2TPG20 Service2. Test OscilloscopeVertical Amplifier: 30 MHz Bandwidth, 1 mV Sensitivity.Time Base: 10

Performance Check and Calibration ProceduresTPG20 Service1–37. Frequency CounterRange: 10 Hz to 135 MHz. Accuracy: "0.001%. Ratio architecture.

Performance Check and Calibration Procedures1–4TPG20 Service13. Coaxial CableThree 75 cables required, two 50 cables required.For example:75 – 42-i

Performance Check and Calibration ProceduresTPG20 Service1–5Performance Check1. Visual Inspection a. Connect the TPG20 to a power source, and turn the

Performance Check and Calibration Procedures1–6TPG20 Serviceb. Connect the equipment as shown in Figure 1–2, using the TSG–170Aand 1780R.c. Verify the

Performance Check and Calibration ProceduresTPG20 Service1–7PAL 4.43361875 MHz 1 Hzf. Set TPG20:FORMAT – 625/50 COMPOSITE PAL/D2Groups; FLAT FIELDS;

Copyright  Tektronix, Inc., 1993,1994. All rights reserved. Printed inU.S.A.Information in this publication supersedes that in all previously pub-lis

Performance Check and Calibration Procedures1–8TPG20 ServiceGroups: LINEARITY; RAMP 100% 625 PAL/D2h. Use VM700A to check for a composite video signal

Performance Check and Calibration ProceduresTPG20 Service1–94. Bandwidth 6.5 MHz ±0.1 dB (NTSC and PAL)a. Set TPG20:FORMAT 625/50 COMPONENT RGBGroups:

Performance Check and Calibration Procedures1–10TPG20 Serviceb. Test both B Analog Outputs on the TPG20 using the VM700A DGDPmeasurement mode. Differe

Performance Check and Calibration ProceduresTPG20 Service1–11f. Select H–PHASE on the TPG20 and rotate knob to verify that horizontalphase can be adju

Performance Check and Calibration Procedures1–12TPG20 Servicee. Set TPG20 Genlock to On. Select Lock on: Sync Lock. Verify thatgenlock occurs within 2

Performance Check and Calibration ProceduresTPG20 Service1–13Group: BARS; EBU COLOR BARS 625 PAL/D2Set: D2 Output Serialb. Connect TPG20 SERIAL DIGITA

Performance Check and Calibration Procedures1–14TPG20 Serviceb. Connect TPG20 SERIAL DIGITAL OUTPUT to 1730D Serial Input and1730D DAC Out to the 1780

Performance Check and Calibration ProceduresTPG20 Service1–15c. Check – WFM601i for correct video signal display. Repeat check forthe second TPG20 SE

Performance Check and Calibration Procedures1–16TPG20 Serviced. Connect the RF Input cable to the RF Output on the RF Bridge.e. Select Demod/tracking

Performance Check and Calibration ProceduresTPG20 Service1–1722. Memory Testsa. If not already done, load the following patterns into the 9 TPG20memor

WARRANTYTektronix warrants that this product will be free from defects in materials and workmanship for a periodof one (1) year from the date of shipm

Performance Check and Calibration Procedures1–18TPG20 Servicewhere ESC is the escape key (1B hex), n is a number from 1 to 9. (ASCII)and <CR> i

Performance Check and Calibration ProceduresTPG20 Service1–19Adjustment ProcedureRemove TPG20 top cover to gain access to adjustments and test links.1

Performance Check and Calibration Procedures1–20TPG20 Service

Performance Check and Calibration ProceduresTPG20 Service1–21Table 1–1: Available TPG20 Crystal Options TypeFrequency Usage Format0 13.50 MHz 625/525

Performance Check and Calibration Procedures1–22TPG20 ServiceRepeat parts d through f of this step for the following formats using theGroups: FLAT FIE

Performance Check and Calibration ProceduresTPG20 Service1–23j. Press the TPG20 SELECT button to save this setting.7. Load Factory Settingsa. Press th

Performance Check and Calibration Procedures1–24TPG20 Service9. Frequency Response Adjustmenta. Set TPG20:FORMAT 625/50 COMPONENT RGBGroups: SWEEPS; L

Performance Check and Calibration ProceduresTPG20 Service1–25e. Remove the shorting link (jumper) from LK2.11. Genlock NTSC and PALa. Using the Black/

Performance Check and Calibration Procedures1–26TPG20 Serviceo. Set TPG20:FORMAT 625/50 COMPONENT RGBGroups: FLAT FIELDS; WHITE 100% 625 RGBp. Adjust

Section 2

TPG20 Service2–1Section 2Replaceable Parts ListThis section contains a list of the components that are replaceable for the TPG20.Use this list to iden

Replaceable Parts2–2TPG20 ServiceA A RMMG 2021004A 1 lU FRAME 4 FIELDtRACK MOUNTS PAINTED & SCREENEDA A RMH3 RCG–3 4 CARD GUIDES–RICHCO RCG–3A A R

Replaceable PartsTPG20 Service2–3A A N4 RMI3 74HCT57 1 IC 74HCT574A A N5 RMI3 74HCT57 1 IC 74HCT574A A Ql RMQ3 BSX20 1 TRANSISTOR BSX20A A Rl RMEl lK

Replaceable Parts2–4TPG20 ServiceA A RMSl OLP6 1 LIGHT PIPE FOR 6mm KEYCAP LICON SERIES 39 SWITCHA A RMSl OLGL6 1 CAP 6mm LIGHT GREY LIT LICON SERIES

Replaceable PartsTPG20 Service2–5Assembly BOM: SAAG 2021580A TPG20 CONNECTOR PLATE ASSEMBLYNo Qty S&W PartId S&W Description1 1 RMK0 07 CON/M

Replaceable Parts2–6TPG20 ServiceC23 B0 22p 1 CAPACITOR SM 22pFC24 B0 22p 1 CAPACITOR SM 22pFC25 Bl 100n 1 CAPACITOR SM 100nF 1206 X7R 10% NBT TEK P/N

Replaceable PartsTPG20 Service2–7C81 B0 100p 1 CAPACITOR SM 100pFC82 Bl 10n 1 CAPACITOR SM 10nF 1206 X7R 10% NBTC83 B0 15p 1 CAPACITOR SM 15pFC84 B0 1

Replaceable Parts2–8TPG20 Service C139 Bl 100n 1 CAPACITOR SM 100nF 1206 X7R 10% NBT TEK P/N 283–5114–00 C140 Bl 100n 1 CAPACITOR SM 100nF 1206 X7

Replaceable PartsTPG20 Service2–9 C197 Bl 100n 1 CAPACITOR SM 100nF 1206 X7R 10% NBT TEK P/N 283–5114–00 C198 Bl 100n 1 CAPACITOR SM 100nF 1206 X7

TPG20 ServiceiTable of ContentsSection 1Performance Check and Calibration Procedures 1–1. . . . . . . . . . . . . Recommended Equipment List 1–1. . .

Replaceable Parts2–10TPG20 Service C255 Bl 10n 1 CAPACITOR SM 10nF 1206 X7R 10% NBT C256 Bl 10n 1 CAPACITOR SM 10nF 1206 X7R 10% NBT C257 Bl 100

Replaceable PartsTPG20 Service2–11 D22 Q0 5050G 1 LED HLMP 5050 GREEN D23 Q0 5050G 1 LED HLMP 5050 GREEN D21 Q6 BAT54C 1 SM DUAL DIODE SOT 23

Replaceable Parts2–12TPG20 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

Replaceable PartsTPG20 Service2–13 N62 I3 74HC4538 1 IC 74HC453B N63 Jl 78L05 1 IC 78L05 5V 100mA REGULATOR N64 I8 EL2120 1 SM IC EL2120 TEK

Replaceable Parts2–14TPG20 Service N153 I5 10115 1 IC 10115 N154 I3 74HC4052 1 IC 74HC4052 N155 I5 10125 1 IC MC10125L N156 I4 74F00 1 IC 74F0

Replaceable PartsTPG20 Service2–15 N416 I6 53051P–34 1 IC HM53051P–34 FIELD DELAY TEK P/N 156–6914–00 N417 I6 53051P–34 1 IC HM53051P–34 FIELD DEL

Replaceable Parts2–16TPG20 ServiceR26 E0 100R 1 RESISTOR SM 1206 .125W 2TOL NBT 100RR27 E0 100R 1 RESISTOR SM 1206 .125W 2TOL NBT 100RR28 E0 100R 1 RE

Replaceable PartsTPG20 Service2–17R84 E0 220R 1 RESISTOR SM 1206 .125W 2TOL NBT 220RR85 El lK5 1 RESISTOR SM lK5 1206 .125W 2% NBTR86 R8 75R0 1 RES M/

Replaceable Parts2–18TPG20 ServiceR142 E4 22K 1 RESISTOR SM 22K 1206 .125W 2% NBTR143 El lK 1 RESISTOR SM lK 1206 .125W 2% NBTR144 El lK 1 RESISTOR SM

Replaceable PartsTPG20 Service2–19R200 E0 150R 1 RESISTOR SM 1206 .125W 2TOL NBT 150RR201 El 2K2 1 RESISTOR SM 2K2 1206 .125W 2% NBTR202 E0 470R 1 RES

ContentsiiTPG20 Service

Replaceable Parts2–20TPG20 ServiceR262 El 4K7 1 RESISTOR SM 4K7 1206 .125W 2% NBTR263 E4 22K 1 RESISTOR SM 22K 1206 .125W 2% NBTR264 El 100K 1 RESISTO

Replaceable PartsTPG20 Service2–21R326 El lK 1 RESISTOR SM lK 1206 .125W 2% NBTR327 El lK 1 RESISTOR SM lK 1206 .125W 2% NBTR328 E4 lM 1 RESISTOR SM l

Replaceable Parts2–22TPG20 ServiceSN3 K8 28 1 SOCKET DIL LOW PROFILE 28 WAY (0.6”)SN4 K8 28 1 SOCKET DIL LOW PROFILE 28 WAY (0.6”)SN13 K8 28 1 SOCKET

Replaceable PartsTPG20 Service2–23X2 RMX3 04 1 XTAL 3.686400 MHz30pF–HC18/UX3 RMX7 11 1 XTAL 13.5MHz 15ppm HC42X4 RMX7 05 1 XTAL 17.73447 MHz 30pF HC4

Replaceable Parts2–24TPG20 Service5 C9, C14, 022–008 .22UF 100V CAP RAD POLYE 10mmC17, C201 C16 022–016 220pF 1KV CAP HV DISC CERAM3 C3, C4, C5 022–02

Section 3

3–1TPG20 ServiceSection 3Diagrams/Circuit Board Illustrations

Test Pattern Generator Board   

TPG20 ServiceiiiService Safety SummaryOnly qualified personnel should perform service procedures. Read this ServiceSafety Summary before performing an

Service Safety SummaryivTPG20 Service To Avoid Fire or Shock Hazards:Do not perform internal service or adjustments of this product unless anotherpers

TPG20 ServicevPrefaceThis manual provides a limited set of service information for the TEKTRONIXTPG20 Test Pattern Generator and is intended for use b