Racal Instruments 3156B, User Manual, Page: 335 / 385

3156B User Manual
Racal Instrument © 2005 Maintenance and Performance Checks 6-7
Offset Accuracy
DAC 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
Frequency: 1MHz
Amplitude: 10mV
Offset: As specified in Table 3-3
Output: On
Enable: On
Test Procedure
1. Perform Offset Accuracy tests on both channels using Table 5-4
Table 6-4 Offset Accuracy, DAC Waveforms
3156B Offset DMM Reading
Setting Error Limits CH 1 CH 2 Pass Fail
+4.000V 4.000V
±
45 mV
0.000V
0V
±
5 mV
-4.000V -4.000V
±
45 mV
2. Modify 3156B Amplitude setting to 5V and offset setting to 0V
3. Continue the Offset tests using Table 5-5
Table 6-5 Offset Accuracy, DAC Waveforms (continued)
3156B Offset DMM Reading
Setting Error Limits CH 1 CH 2 Pass Fail
0.000 V 0
±
55 mV