Dc Offset Test; Figure 5: 50 Ω Terminator Accuracy; Figure 6: Dc Offset Tests - Tektronix AFG1022 Technical Reference

DC offset test

AFG1000 Series Specifications and Performance Verification
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
Measurement (reading of the DMM)
Ω
Examples
50.50 Ω
49.62 Ω
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.
(1 + 50 / Measurement
/ Ω
CF
1.0050 (= 2 / (1 + 50 / 50.50))
0.9962 (= 2 / (1 + 50 / 49.62))
Performance tests
Ω)
23