3156B User Manual
Maintenance and Performance Checks 6-8
Racal Instrument © 2005
Modulation
Waveforms
Equipment
: DMM
Preparation
:
1. Configure the DMM as follows:
Termination:
50
Ω
feedthrough at the DMM input
Function:
DCV
2. Connect 3156B Channel 1/2 output to the DMM input
3. Configure the 3156B channels 1/2 as follows:
Reset
Waveform Mode: MOD
Modulation Mode: OFF
CW
Frequency:
1MHz
Amplitude:
5V
Output:
On
Test Procedure
1. Perform offset Accuracy tests on both channels using Table 5-6
Table 6-6 Offset Accuracy, Modulation Waveforms
DMM
Reading
3156B Setting
Error Limits
CH 1
CH 2
Pass
Fail
0.000 V
0V
±
55 mV
Squarewave
Characteristics
Equipment
: Oscilloscope
Preparation
:
1. Configure the Oscilloscope as follows:
Termination:
50
Ω
feedthrough at the oscilloscope input
Setup:
As required for the test
2. Connect 3156B Channel 1/2 output to the oscilloscope input
3. Configure the 3156B channels 1/2 as follows:
Reset
Frequency: 1MHz
Waveform: Squarewave
Amplitude: 5V
Output:
On
Enable:
On
Test Procedure
1. Perform Squarewave Characteristics tests on both channels
using Table 5-7