Channel A Sensitivity Offset Adjustment - HP 5334B Service Manual

Procedure:
1. Allow the ovenized oscillator a 24-hour warm-up period prior to performing this adjustment. The crystal os-
cillator oven is operating whenever the instrument is connected to its power source.
2. Set the oscilloscope as follows:
...........................
Channel A VPiv. 0.5V
TimePiv
...........................................
0.01~s
......................
Ch A Input Coupling 50fl
Main Triggering
..............................
EXT
...............................
Vertical Display A
..........................
Horizontal Display MAIN
3. Set the 5334B as follows:
.....................................
FUNCTION FREQ A
GATE TIME
...................................
1 Second
TIME BASE
....................................
INT (rear panel)
4. Connect the 10 MHz Frequency Standard to the oscilloscope External Trigger input.
5. Connect the TIME BASE output to the oscilloscope channel A input.
6. Adjust the "FREQ ADJ" pot on the Option 010 Oven Oscillator until the scope pattern does not move
sideways more than 1 division in 10 seconds.
7. Set the oscilloscope as follows:
..............................
Main Triggering INT
...............................
Internal Trigger A
- -
............
Channel A Input Coupling 500
8. Connect the 5 3 3 4 ~ TIME BASE output to the oscilloscope channel A input.
a
9. Verify that the signal is greater than 1.4V p-p.
5-16. CHANNEL A SENSITIVITY OFFSET ADJUSTMENT
Reference: Figure 8-20 and 8-21
Description: The sensitivity of the Channel A Input is adjusted using a
1
MHz input signal (interactive adjust-
ment).
HP 5334B
-
Service Manual
5-9