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Maintenance and Performance Checks 5-24
Change the Model 3152 setting to triggered. Use an external
pulse generator to apply a TTL level, 200 KHz signal to the
TRIG IN connector. Proceed with the checks given in Table
5-7b.
Table 5-7b Engine Board Checkout Procedure - #2
Step
Test Point
Expected Result
1
U13 pin 16
TTL Level, 200 KHz
2
U13 pins 8
TTL Level Positive going pulses; 10 ns width, 200 KHz
3
U39 pin 13
TTL Level Negative going pulses; 10 ns width, 200 KHz
4
U39 pin 8
TTL Level Positive going pulses; 1
F
s width, 200 KHz
5
U26 pin 11
TTL Level Negative going pulses; 1
F
s width, 200 KHz
6
U24 pin 1
ECL Level Negative going pulses; 1
F
s width, 200 KHz
Change the Model 3152 setting to delayed trigger and
change delay to 100. Use an external pulse generator to
apply a TTL level and 200 KHz signal to the TRIG IN
connector. Proceed with the checks given in Table 5-7c.
Table 5-7c Engine Board Checkout Procedure - #3
Ste
p
Test Point
Expected Result
1
U14 to U8 pin 9
TTL Level Positive going pulses; 1
F
s width, 200 KHz
2
U10 pin 1, U39 pin
13
TTL Level Negative going pulses; 10 ns width, 200 KHz
Содержание 3152
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Страница 80: ...SCPI Command Reference 4 17 Figure 4 1 SCPI Status Registers...
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