HP 8112A, Operating, Programming And Servicing Manual

Page: 115 / 406

Period Performance
Test
Specifications
Range
20 ns to 950 ms
Accuracy
±5% of programmed value ±2 ns
Repeatability
Factor 4 better than accuracy
Max Jitter
0.2% of programmed value ± lOOps
Equipment
•
Counter
(
HP 5335A)
Test Setup
•
Cable Assembly BNC
•
50 n Feedthrough Termination
(
Required if counter input impedance
=/;
50 n)
HP 8t12A
0 0 0
Counter
(H P 5 33 5A)
Figure 8·1. Period Performance Test
Procedure
1 . Connect the equipment as shown in the setup figure. Use a
50 n feedthrough termination if you cannot select 50 n input
impedance on the counter.
2. Set up the HP 81 12A as follows:
Input Mode
Control Mode
Transition
DTY
HI1
101
NORM
Off
Fixed
50%
1 .00 v
- 1 .00 v
3 . Set the counter function control to PER A.
4. Set the HP 8 1 12A Period to the following values and read the
actual output from the counter. Record your results on a copy of
Testing Performance 8-3