HP 8114A, Руководство по обслуживанию

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HP 8114A Service Guide
5-7. Voltage at Pin of
100 ns
- 5 . 0 7 v
999 ns
-467
2. Check for the following voltage drops across R502:
5-8. Voltage Drops Across R502
100 ns
2 3 4
999 ns 21
Width Generator
Check for the supply voltages:
pin 2 for -12 and pin 3 for -5.2 V.
Check the current sources for the width generator:
1. Varying the width from 10.0 ns to 99.9 ns the voltage at pin 7 of
should vary from -5.2 V to -0.5 V.
2. Check for the following voltage drops across R602:
5-9. Voltage Drops Across R602
Edge Interface
1. Set standard setting, by pressing (Recall),
2. Check at pin 13 for an ECL signal (high level at -0.8 low
level at -1.8 V) with 15 duty cycle.
5-14 Troubleshooting