Delay Performance Test; Gate Mode - HP 8112A Operating, Programming And Servicing Manual

Test Setup
H P 8112A
1 . Connect the equipment as shown in the setup fi g ure. Use a
Procedure
50 n feedthrough termination if you cannot select 50 n input
impedance on the counter.
2. Set up the HP 8 1 12A as follows:
Input Mode
Control Mode
Transition
DTY
101
HI1
3. Set the counter as follows:
TIME
Slopes A and B
Trigger levels

Gate Mode

4. Set the HP 8 1 12A Delay and Period to the following values and
read the actual output from the counter. Record your results on a
copy of the Test Record, specified limits are given here and on the
Test Record.
0
Figure 8-2. Delay Performance Test
NORM
Off
Fixed
50%
2.40
0.00
A ---+ B
Positive
v
1 .2
---+
MIN
HP 81 12A
setting
PER
D EL
ns
75 ns 95
50 µs 95 µs
ms
ms
10 95
ms
900
950
Counter (H P 5 3 3 5A)
v
v
Cmmter reading
Low Limit High Limit
ns
83.75
-
47.50 µs 52.50 µs
ms
ms
9.50
10.50
ms ms ms
855.0 945.0
Testing Performance 8-5