Constant Duty Cycle Performance Test - HP 8112A Operating, Programming And Servicing Manual

Note
Constant Duty Cycle
Performance Test
Specifications
8-10
Testing Performance
Pulse width is measured at 50% of pulse amplitude.
PER
100
200µs
5. Connect the HP 8 1 12A and counter as shown in Figure 8-6.
6. Set the counter as follows:
Trigger level - Preset
Mode Time A � B
50!1
Impedance
Gate Mode � MIN
Slope A Positive
Slope B Negative
Check the HP81 1 2A WID settings against the table below
7.
8. Record your results on a copy of the Test Record, specified limits
are given here and on the Test Record.
HP 81 12A
PER
5 ms
999 ms 950 ms 902 .5 ms
Range
1 % to 99% of period. 10 ns min, PER- 10 ns max.
Accuracy
± 1 0% of programmed value
Repeatability
Factor 4 better than accuracy
Oscilloscope
HP 8112A
setting
WID Low Limit High Limit
ns
ns 10 ns
7 . 5
40 µs 38.0 µs
Oscilloscope
setting
WID Low Limit High Limit
1
ms 0.95 ms
ns
1 2 . 5
42 .0 µs
1 .05 ms
997.5 ms