Check DC voltage measurement accuracy ≤20 GHz models.
Equipment Required Prerequisites
One DC calibration generator (Item 6)
One SMA male-to-BNC female adapter (Item
19)
The instrument must meet the prerequisites.
(See Prerequisites on page 116.)
WARNING. The generator is capable of outputting dangerous voltages. Be sure to
set the DC calibration generator to off or 0 volts before connecting,
disconnecting, and/or moving the test hookup during the performance of this
procedure.
1. Install the test hookup and preset the instrument controls:
a. Hook up the test-signal source:
■
Set the output of a DC calibration generator to off or 0 volts. Set the
generator to drive a load impedance of 50 Ω.
■
Connect the output of a DC calibration generator. (See Figure 10:
DC voltage accuracy test hookup, ≤20 GHz models.)
b. Initialize the instrument: Press DEFAULT SETUP.
c. Modify the default settings:
■
From the button bar, touch Horiz/Acq and select the Acquisition
tab.
■
Touch Average and set the number of averages to 16.
■
< 4 GHz models: Touch Vertical, select Vertical Setup, and then
touch Termination 50 Ω.
Figure 10: DC voltage accuracy test hookup, ≤20 GHz models
2. Confirm input channels are within limits for DC accuracy at maximum offset
and position: Do the following substeps - test Ch 1 first, skipping substep 2.a
of this step since Ch 1 is already selected from step 1.
a. Select an unchecked channel:
■
From the button bar, touch Measure and then Clear All to remove
the previous measurement.
Performance verification (MSO/DPO70000C, MSO/DPO70000DX, and DPO7000C series)
MSO70000C/DX, DPO70000C/DX, DPO7000C, MSO5000/B, DPO5000/B Series 183
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