AFG1000 Series Specifications and Performance Verification
DC offset test
This test verifies the DC offset accuracy of the arbitrary function generator.
This test uses a 50 Ω terminator. It is necessary to know the accuracy of a
50 Ω
terminator in advance of this test. This accuracy is used as a calibration
factor.
1.
Connect the 50 Ω terminator to the DMM as shown in the following figure
and measure the register value.
Figure 5: 50 Ω terminator accuracy
2.
Calculate the 50 Ω calibration factor (CF) from the reading value and record
as follows:
CF (Calibration Factor) = 2
(1 + 50
/ Measurement
Measurement (reading of the DMM) 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 arbitrary function generator to the DMM as shown in the
following figure. Be sure to connect the 50 Ω terminator to the arbitrary
function generator Output connector side.
Figure 6: DC offset tests
4.
Set up the arbitrary function generator as follows:
a.
Push the Arb waveform button on the front panel.
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