3156B User Manual
Racal Instrument © 2005
Maintenance and Performance Checks 6-15
Table 6-15 Re-Trigger Delay Tests
3156B Re-trigger
Setting
Error Limits
Counter Reading
Pass
Fail
1
μ
s 1
μ
s
±
150ns
1ms
1ms
±
50
μ
s
1s
1s
±
50ms
10s
10s
±
500ms
Trigger Slope
Equipment
: Oscilloscope, function generator
Preparation
:
1. Configure the Oscilloscope as follows:
Termination: 20dB, 50
Ω
feedthrough attenuator
Setup:
As required for the test
Trigger
Source:
External
2. Connect 3156B Channel 1/2 output to the oscilloscope input.
Place the feedthrough attenuator at the oscilloscope inputs
3. Configure the function generator as follows:
Frequency 10kHz
Run
Mode: Continue
Waveform:
TTL Output
4. Connect the function generator TTL output to the 3156B TRIG IN
connector
5. Connect the function generator main output to the 2
nd
channel of
the oscilloscope
6. Configure the 3156B channels 1/2 as follows:
Reset
Frequency: 1MHz
Waveform: Sine
wave
Run
Mode: Trigger
Enable
Source:
Hardware
Output:
On
Enable:
On
Test Procedure
1. Toggle 3156B trigger slope from positive to negative visa versa
2. Verify on the oscilloscope that the 3156B transitions are
synchronized with the slope of the trigger
Test Results
Pass
Fail
Содержание 3156B
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