3156B User Manual
Maintenance and Performance Checks 6-34
Racal Instrument © 2005
Test Results
Pass
Fail
3. Turn chassis power off and remove the cable from 3156B
channel 1
4. Repeat the test procedure as above for channel 2
Test Results
Pass
Fail
Video Stroke
Characteristics
Equipment
: Oscilloscope, function generator
Preparation
:
1. Configure the oscilloscope as follows:
Time Base:
As required by the test
Amplitude:
2V/div
2. Connect 3156B Channel 1 output to the oscilloscope input,
channel 1. Use 50
Ω
at the oscilloscope input
3. Connect 3156B Channel 2 output to the oscilloscope input,
channel 2. Use 50
Ω
at the oscilloscope input
4. Configure the function generator as follows:
Frequency 10kHz
Run
Mode: Continuous
Waveform:
Squarewave.
Amplitude:
2V
Offset:
1V
5. Connect the function generator output connector to the 3156B
TRIG IN connector
6. Configure the 3156B channel 1 and 2 controls
as follows:
Reset
Sample
Clock:
100MS/s
Wave Mode: Video
Start
Offset: -4V
Stop
Offset: +4V
Offset
Step: 0.1V
Amplitude: 10mV
Run
Mode: Continuous
Burst
Count: 5
Output:
On
Test Procedure
1. Verify trace on the oscilloscope for both channels show a ramp
from -4V to +4V