Tektronix TDS 420A - Page 241

Troubleshooting
TDS 420A, TDS 430A & TDS 460A Service Manual
6-89
J2 pin 2 (Horizontal Sync)
31.75 kHz Rate
J2 pin 4 (Vertical Sync)
60 Hz Rate
Figure 6- 38: Horizontal and Vertical Sync Signals
J2 pin 7 (Video)
Blanking Level
White Level
Black Level
Figure 6- 39: A Video Signal with White, Black, and Blanking Levels