screen, to the test frequency in the tables that corresponds to the
vertical scale set in substep 2.d.
■
Set the horizontal Scale to the horizontal scale setting in the tables
that corresponds to the vertical scale set in substep 2.d. Press PUSH-
SET 50% as necessary to trigger the signal.
■
Adjust the output of the generator until the reading on the power
meter is equal to the reading recorded on the power meter in step 2.f.
■
MSO/DPO71254C and MSO/DPO72504DX: Using the
Multipurpose knobs, adjust Cursor 1 to the top of the waveform and
Cursor 2 to the bottom of the waveform. Read the absolute value of
the result at the ΔV readout.
■
All instruments except the MSO/DPO71254C and MSO/
DPO72504DX: Read the results at the Chx Amplitude mean readout,
which will automatically measure the amplitude of the test signal.
(See Figure 23: Measurement of analog bandwidth on page 236.)
Figure 23: Measurement of analog bandwidth
h. Check against limits:
■
CHECK that the measured amplitude is within the limits for the
current vertical scale setting in the table.
■
Enter the voltage on the test record.
■
When finished checking, set the horizontal Scale back to the 20 ns.
i. Check remaining vertical scale settings against limits:
■
Check the remaining vertical scale settings for the channel under test
by repeating substeps 2.a through 2.h for each of the remaining
scale settings for the channel under test.
Performance verification (MSO/DPO70000C, MSO/DPO70000DX, and DPO7000C series)
236 MSO70000C/DX, DPO70000C/DX, DPO7000C, MSO5000/B, DPO5000/B Series
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