HP 8112A Operating, Programming And Servicing Manual page 172

9-20 Adjustme n t Procedures
999 µs
TRE
4
STO
6. Set the HP 8 1 1 2A as follows:
RCL 1
7. Connect the HP 8 1 1 2A Trigger Output to the oscilloscope
Trigger Input.
8. Connect the HP 8 1 12A output to input 4 of the oscilloscope.
9. Set the oscilloscope to display one pulse using the
mode.
10. Observe LEE on the oscilloscope ( 1 03 - 903 of amplitude).
Adjust A2R37 for about 0.53 below programmed value (i.e. 99.5
µs).
1 1 . Set the HP 8 1 12kas follows :
RCL 2
12. Observe LEE on the oscilloscope and adjust A2R32 for about
0.53 below programmed value (i.e. 995 µs ).
13. Repeat last two steps and re-adjust if necessary.
14. Set the HP 81 12A as follows:
RCL
5
15. Check LEE on the oscilloscope for < 510 µs and
16. Step LEE up and down using the vernier keys and observe the
oscilloscope for
<
1 7. Set the HP 8 1 1 2A as follows:
RCL 3
18. Observe TRE on the oscilloscope (903 - 103 of amplitude) and
adjust A2R38 for about 0.53 below programmed value (i.e. 99.5
µ s) .
19. Set the HP 8 1 1 2A as follows:
RCL
4
20. Observe TRE on the oscilloscope and adjust A2R35 for about
0.53 below programmed value (i.e. 995 µs ) .
2 1 . Repeat last two steps and re-adjust i f necessary.
22. Set the HP 8 1 1 2A as follows:
RCL 5
23. Check TRE on the oscilloscope for < 510 µs and
24. Step TRE up and down using the vernier keys and observe the
oscilloscope for < 23 deviation .
25. Set the HP 8 1 1 2A as follows:
23 deviation.
>
480 µs.
>
480 µs.