3156B User Manual
Racal Instrument © 2005
Maintenance and Performance Checks 6-23
2. Modify 3156B modulating waveform to triangle, then square and
ramp and verify FM waveforms as selected
Test Results
Pass
Fail
3. Move 3156B marker position to 1.5MHz and verify marker
position
Test Results
Pass
Fail
4. Remove the cable from 3156B channel 1 and connect to chan 2
5. Repeat the test procedure as above for channel 2
Test Results
Pass
Fail
FM – Std
Waveforms,
Triggered Run
Mode
Equipment
: Oscilloscope (LeCroy LT342, fitted with jitter package),
function generator
Preparation
:
1. Configure the oscilloscope as follows:
Time Base:
0.1 ms
Sampling Rate: 50MS/s at least.
Trace A View: Jitter, Type: FREQ, CLK.
Trigger source: Channel 2, positive slope
Amplitude:
1V/div
2. Connect 3156B Channel 1 output to the oscilloscope input,
channel 1
3. Connect the 3156B SYNC output to the oscilloscope input,
channel 2
4. Configure the function generator as follows:
Frequency 1kHz
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 channels 1/2 as follows:
Reset
Wave Mode: Modulation
Modulation Mode: FM
Modulation Run Mode: Triggered
Содержание 3156B
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