Delay (Double Pulse) - HP 8112A Operating, Programming And Servicing Manual

10. If necessary, repeat steps 1 to 9 to achieve an equal and opposite
Note I If the adjustment is not possible alter the value of A2VR2/R62
table 9-l) and repeat steps 1 to 9.
11. Alter HP 8112A PER to 20 ns.
12. Adjust the range high end with A2R3 for 19.5 ns f0.2 ns.
13. Alter HP 8112A PER to 99.9 ns.
14. Adjust the range low end with A2R57 for 102.5 ns f0.2 ns.
15. Alter HP 8112A PER to 50 ns.
16. Check that the mid-range reading for 50 ns f 2ns.
17. If necessary, repeat steps 1 to 17 and adjust if necessary.

Delay (Double Pulse)

18. Set up the HP 8112A as follows:
19. Set the counter as follows:
20. Connect HP 8112A Trigger Output to channel A of the counter.
21. Connect HP 8112A Output to channel B of the counter.
22. Set trigger levels to trigger at about 50% of amplitudes.
23. The typical DELAY (DBL) range characteristic is similar to that
24. Adjust the range high end with A2R14 for approx 1% above the
25. Alter HP 8112A DEL to 9.99 ms.
26. Adjust the range low end with A2R15 for approx 1% above the
programmed value (i.e. lO.lms).
27. Alter HP 8112A DEL to 3.5 ms.
percentage deviation (up to f1.5%).
Trigger Mode
Control Mode
P E R
DEL
D T Y
Transition
HIL
COMPL
DISABLE
LIMIT
Time interval
Trigger (both than)
shown in Figure 9-5.
programmed value (i.e. l.Olms).
NORM
Off
50 ms
1 ms
20%
Fixed
0.0 v
Off
Off
Off
Adjustment Procedures 9-11
(See