Racal Instruments 3152A, Руководство пользователя

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3152A User Manual
Racal Instruments
©
2001 Maintenance and Performance Checks 5-25
Table 5-3, Clock Synthesizer Checkout Procedure
Step Test Point Expected Result
1 U510 pin 7 100 MHz ECL level clock
2 U16 pin 15 50 MHz ECL level clock
3 U16 pin 2 25 MHz ECL level clock
4 U505 pin 21 1.5625 MHz TTL level clock
5 U506 pin 6 1.5625 MHz ECL level clock
6 U506 pin 2 1.5625 MHz square waves 2 Vp-p
7 U503 pin 1 1.5625 MHz ECL level clock
8 U503 pin 2 1.5625 MHz ECL level clock
9 Q502, Q503 collector 1.5625 pulses 3 Vp-p on 5 V offset
10 U516 pin 6 Approximately 12 VDC
11 U17 pin 15 100 MHz ECL level clock
Sequence
Generator
Checkout
Problems with the sequence generator circuits can be detected
if the Model 3152A accepts word serial commands and
responds correctly to word serial queries, but fails to output
sequences or bursts. If there is a problem with the sequence
generator circuits, proceed with the checkout procedure given in
Table 5-4.
Before starting the following procedure, reset the Model 3152A
to the factory default using the *RST command. Configure the
Model 3152A to sequenced output mode and load three
different waveforms - 100 points long, to segments 1, 2, and 3,
respectively. Program each step to repeat once. Use the
following commands after loading the waveforms.
Remote Commands: :FUNC:MODE SEQ
:SEQ:DEF 1,1
:SEQ:DEF 2,1
:SEQ:DEF 3,1
:OUTP ON