Performance verification
AFG31000 Series Arbitrary Function Generator Specification and Performance Verification Technical Reference
43
DC test
This test verifies the DC accuracy of the AFG31000 Series.
This test uses a 50 Ω terminator. You must know the accuracy of the 50 Ω
terminator in before
running this test. This accuracy is used as the calibration factor.
NOTE.
Record the results of this test in the test record for your model in
(on page 51).
To verify DC accuracy:
1.
Connect the 50 Ω terminator to the DMM as shown in the following figure and measure the
register value.
Figure 8: Connections for the 50 ohm terminator measurement
2.
Calculate the 50 Ω calibration factor (CF) from the reading value and record, as shown in the
following table.
50 Ω calibration factor
(calibration factor (CF) = 2 / (1 + 50 Ω / measurement Ω) =)
Measurement (DMM reading)
CF
Ω
Examples
50.50
Ω
1.0050 (= 2 / (1 + 50 / 50.50))
49.62
Ω
0.9962 (= 2 / (1 + 50 / 49.62))
3.
Connect the AFG31000 Series to the DMM as shown in the following figure. Be sure to connect
the 50 Ω
terminator to the AFG31000 Series Ch1 (or Ch2) output connector.
Figure 9: Connections for the DC test
