User Manual 9250
Portrayal 3-5
Input/Output
Impedance
Equipment: DMM
Preparation:
1. Perform test with the 9250 placed on the desk, power re-
moved
Test Procedure:
1. Set DMM to Resistance measurements and 200Ω Range.
Connect the DMM probes across the 9250 channel 1 input
and verify DMM reading of 50Ω, ±2%
2. Repeat the test for all inputs and outputs. Do not measure the
DC Offset terminals on the rear panel
Test Results
Pass Fail
Gain Accuracy
Equipment: DMM, Function generator
Preparation:
1. Configure the Function Generator as follows:
2. Function: Sine wave
3. Frequency: 1kHz
4. Amplitude: 2Vp-p
5. Connect function generator output to the 9250 channel 1
input
6. Configure the DMM as follows:
7. Function: ACV
8. Range: 20V
9. Termination: 50Ω feed-through at the DMM input
10. Connect the DMM input to the 9250 channel 1 output
Test Procedure
11. Measure and verify DMM reading of 7.143V, ±142mV
Test Results
Pass Fail
12. Remove the cables from 9250 channel 1 input/output and
connect to channel 2
13. Repeat the test procedure as above for channel 2
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