HP 8112A Operating, Programming And Servicing Manual page 163
50 mhz programmable pulse generator
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- Operating, programming and servicing manual (406 pages)
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10.
Note
If the adjustment is not possible alter the value of A2VR2/R62 (See
table 9- 1 ) and repeat steps 1 to 9.
1 1 . Alter HP 8 1 1 2A PER to 20 ns.
12. Adjust the range high end with A2R3 for 19.5 ns ±0.2 ns.
13. Alter HP 8 1 1 2A PER to 99.9 ns.
14. Adjust the range low end with A2R57 for 102.5 ns ±0.2 ns.
15. Alter HP 8 1 1 2A PER to 50 ns.
16. Check that the mid-range reading for 50 ns ± 2ns.
17.
Delay (Double Pulse}
18. Set up the HP 8 1 1 2A as follows:
19. Set the counter as follows:
20. Connect HP 8 1 1 2A Trigger Output to channel A of the counter.
2 1 . Connect HP 8 1 12A Output to channel B of the counter.
22. Set trigger levels to trigger at about 503 of amplitudes.
23. The typical DELAY (DBL) range characteristic is similar to that
24. Adjust the range high end with A2R14 for approx 13 above the
25. Alter HP 8 1 1 2A DEL to 9.99 ms.
26. Adjust the range low end with A2R15 for approx 13 above the
programmed value (i.e. 10. lms).
27. Alter HP 8 1 12A DEL to 3.5 ms.
If
necessary, repeat steps 1 to 9 to achieve an equal and opposite
percentage deviation (up to ± 1 .53).
If
necessary, repeat steps 1 to 17 and adjust if necessary.
Trigger Mode
Control Mode
PER
DEL
DTY
Transition
HIL
LOL
COMPL
DISABLE
LIMIT
Time interval
Trigger (both chan)
shown in Figure 9-5.
programmed value (i.e. l .Olms) .
NORM
Off
50 ms
1 ms
203
Fixed
+3.0 v
0.0 v
Off
Off
Off
A --+ B
Z
n
1 ,
DC,
= 50
Adjustment Procedures 9-1 1
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