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2. Confirm input channels are within limits for DC accuracy at maximum offset,
position, and termination voltage:
Do the following substeps - test Ch 1 first,
skipping substep
since Ch 1 is already selected from step
a. Select an unchecked channel:
■
From the button bar, touch
Measure
and then
Clear All
to remove
the previous measurement.
■
Press the Vertical button of the channel just confirmed to remove the
channel from the display.
■
Press the front-panel Vertical button that corresponds to the channel
you are to confirm.
■
Set the generator output to 0 V.
■
Move the test hookup to the channel you selected.
b. Turn on the measurement Mean for the channel:
■
From the button bar, touch
Measure
and select the
Ampl
tab,
More
,
and then touch
Mean
to measure the mean of the current channel.
■
Press the
X
(Close) button.
NOTE.
If any of the voltages supplied by your generator are not
calibrated, verify those generator voltages using a digital multimeter,
item 27.
c. Set the vertical scale:
Set the vertical
Scale
to one of the settings listed in
the following table that is not yet checked, starting with the first setting
listed.
Table 6: DC voltage measurement accuracy
Scale setting
Termination setting Offset setting
3
Generator setting
Accuracy limits
6.25 mV
+3.5 V
+3.4 V
3.419 V
3.4012 V to 3.4363 V
+3.5 V
+2.4 V
2.419 V
2.4032 V to 2.4343 V
+1.5 V
+2.5 V
2.509 V
2.49345 V to 2.52456 V
+1.5 V
+1.5 V
1.509 V
1.49945 V to 1.51856
+1.5 V
+0.5 V
509 mV
501.45 mV to 516.56 mV
0 V
0 V
18.5 mV
14.76 mV to 22.25 mV
0 V
–1.0 V
-991 mV
-1.00056 V to -981.45 mV
0 V
+1.0 V
1.009 V
999.45 mV to 1.01856 V
-3.5 V
-3.4 V
-3.419 V
-3.4363 V to -3.4012 V
-3.5 V
-2.4 V
-2.419 V
-2.4343 V to -2.4032 V
3
Set as precisely as the instrument's offset resolution permits.
Performance verification (MSO/DPO70000C, MSO/DPO70000DX, and DPO7000C series)
178
MSO70000C/DX, DPO70000C/DX, DPO7000C, MSO5000/B, DPO5000/B Series
Содержание DPO5000 Series
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