HP 5334B Service Manual page 18

Observe: The HP 5334B front panel displays all dashes and Channel B trigger light stops flashing.
14. Set:
CHAN B 500
........................................................................................................
OFF
I
Observe: Condition prior to switching in 50n impedance.
15. Set:
CHAN B XI0 ATTN
...........................................................................................
ON
Observe: The HP 5334B front panel displays all dashes and Channel B trigger light stops flashing.
16. Set:
CHAN B XI0 ATTN
...........................................................................................
OFF
Observe: Condition prior to switching in XI0 A'ITN.
Test Record: Mark Pass or Fail on the Operational Verification Test Record Card, line 5.
What Checked: Relays and circuitry.
For Failures: Refer to Section VIII of this manual. The Input Amplifier and Executive Blocks are the main com-
ponents of this test. Other blocks involved are DAC, Measurement, and Front Panel blocks.
4-21. T.I. A+B
Description: Slope switch verification.
Procedure:
1. Connect the rear panel TIME BASE oscillator signal to the Channel A Input.
2. Set the HP 5334B as follows:
Reinitialize the 5334B.
C0M.A
................................................................................................................
ON
TRIGGER LEVEL controls
..............................................................................
set to O V
+
0.2V
using READ LEVELS "L" mode
AUTO TRIG
.........................................................................................................
OFF
CHAN A and B 500
............................................................................................
ON
GATE TIME
.........................................................................................................
1 Second
FUNCTION
...........................................................................................................
T.I. A+ B
Observe: The HP 5334B front panel displays 0 ns
+-
6 ns.
3. Set both:
Channel A and B Negative SLOPE
..................................................................
ON
(Counter now triggers on negative slope.)
Observe: The HP 5334B front panel displays 0 ns
+-
6 ns.
HP 5334B -
Service Manual
4-8