Procedure; Shaper And Offset Adjustments; Equipment; Fixed Amplitude - HP 8112A Operating, Programming And Servicing Manual

Shaper and Bffset
Adjustments

Procedure

Digital Voltmeter (HP 34588)
q
Counter HP 5335A
n
Pulse/Function Generator (HP 8116A)
n
Low pass filter (Refer to Figure 9-6)
n
(Only required if DVM does not have built-in 5 Hz low-pass input
filter.)

Fixed amplitude

1. Set up the HP 8112A as follows:
Trigger Mode
Control Mode
P E R
DEL
WID
Transition
HIL
COMPL
DISABLE
LIMIT
2. Set the counter to TIME Interval A-+B, COM, A i, B t , Trig
level 0 V, Z = 50R
3. Connect the HP 8112A main output to channel A of the counter.
4. Observe the counter whilst switching the HP 8112A output from
COMPL on and COMPL off.
5. Step the HP 8112A WID with the vernier until the counter reads
exactly the same (Exactly 50% Duty Cycle).
6. Set the HP 8112A for ST0 9.
7. Disconnect HP 8112A from the counter.
8. Set the HP 8112A as follows:
HIL
LIMIT
9. Set up the DVM to read AC voltages up to 10 V.
10. Connect the HP 8112A main output to the DVM via an exact
11. Adjust AIR410 until the measured voltage is 5.045 V +20 mV
NORM
Off
1 ms
65 ns
500 ps
Fixed
$0.99 v
-0.99 v
Off
Off
Off
-4.99 v
Off
Adjustment Procedures 9-15