Tektronix TPG20 Manuel d'utilisateur télécharger pdf (Page 29)

Performance Check and Calibration Procedures

TPG20 Service

1–17

22. Memory Tests

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. 625/50 Composite Multiburst 5.8

4. 625/50 Composite Line Sweep 6.5

5. 625/50 RGB EBU Bars

6. 625/50 RGB Line Sweep 6.5

7. 525/60 Composite SMPTE Bars

8. 525/60 Composite Line Sweep 6.5

9. 625/50 Composite S&W Test #2 Style: Circular

Speed 5

Mode: Field

b. Turn TPG20 off for at least one minute.

c. Switch TPG20 power back on. The last active pattern before power

down should be reloaded automatically.

d. Connect TPG20 analog out B to video monitor.

e. Check – the nine memories stored in step a by recalling them and

viewing the signal on the monitor (set to the correct format).

23. RS232 Remote Port Tests

Connect PC serial port (e.g. COM1) to remote RS-232 port of unit (using 9-

pin, straight-through, serial cable). Run terminal emulation software on the

PC (e.g. Windows Terminal, Xtalk, Kermit, etc). Configure the PC port to

9600 baud, no parity, 8 bits data, 1 stop bit. Load and save different patterns

in memories 1 to 9 on the TPG20. From the PC terminal, send the following

data:

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 101 102

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Tektronix TPG20 Manuel d'utilisateur Page 29