Clock Synthesizer Checkout; Table 5-3, Clock Synthesizer Checkout Procedure - Racal Instruments 3151 User Manual

Clock Synthesizer
Checkout
Step Test Point
1 U15 pin 3
2 U16 pin 15
3 U16 pin 2
4 U32 pin 10
5 U31 pin 10, U32 pin 1
6 U31 pin 1, U32 pin 10
7 U38 pin 3
8 U22 pin 8
9 U22 pin 3, U22 pin 13
10 U14 pin 1
11 U14 pin 7
Maintenance and Performance Checks 5-22
Problems with the clock synthesizer circuits can be detected if the Model
3151/3151A accepts word serial commands and responds correctly to word
serial queries, but fails to output the correct waveform frequency. If there is
a problem with the clock synthesizer circuit, proceed with the checkout
procedure given in Table 5-3.
Before you start with the following procedure, reset the 3151 to the factory
default using the *RST command.

Table 5-3, Clock Synthesizer Checkout Procedure

100 MHz ECL level clock
50 MHz ECL level clock
25 MHz ECL level clock
25 MHz TTL level clock
6.1035 kHz TTL level clock
1.49 Hz TTL level clock
46.56 MHz TTL level clock
10 MHz TTL level clock
Positive going pulses; 100 ns width, 400 Fs period
Approximately -2 VDC
Approximately +2 VDC
3151 And 3151A User Manual
Expected Result