Output Mode Verification Test; Test Setup 2 - HP 8112A Operating, Programming And Servicing Manual

Test Setup
Equipment
Procedure
8-22 Testing Performance
2
H P 8112A
0 0
Figure 8·14. Output Mode Verification Test
(
•
Oscilloscope
(
•
Counter HP 5335A
•
Cable Assembly BNC
•
Attenuator 2 0 dB, 2 W
•
50f! Feedthrough Termination
(
required if counter input impedance
1 . Connect the equipment as shown in the setup 1 figure
2. Set up the HP 81 12A as follows:
Trigger Mode
Control Mode
Transition
BUR
PER
DEL
DTY
Complement Output
HIL
LOL
Limit Mode
3. Verify that the output signal is inverted by pressing the (COM PL)
key.
4. Deselect the ( COMPL) key.
5. Verify that the (DISABLE ) key disables the output signal.
6 . Re-enable the output signal.
7. Change Limit mode to ON
@
8. Press the
increase the HIL beyond the +2.0 V as set previously.
9. Press the (LOL ) key and verify that the vernier keys do not
decrease the
10. Reconnect the equipment as setup 2.
)
neccessary .
0
)
HP 54121 T
)
( X )
2
(
2 x )
NORM
Off
Fixed
472
1 .0 µs
65 ns
253
Off
2.0 v
-2.0 v
Off
key and verify that the vernier keys do not
101
below the -2.0 V as set previously.
C o u n t e r (H P 5 335A)
0
�
50f!
(
use the 50f! feedthrough if
0