2. Confirm input channels are within limits for offset accuracy
. Do the
following substeps - test Ch 1 first,
a. Select an unchecked channel:
■
From the tool 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 tool 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.
c. Set the vertical scale:
Set the vertical
Scale
to one of the settings in the
following table that is not yet checked.
Table 10: Offset accuracy
Scale setting
Position setting
(Divs)
Offset setting
5
Termination
setting
Generator
setting
Accuracy limits
6.25 mV
0
0 V
0 V
0 V
–3.13 mV to +3.25 mV
+3.4 V
+3.5 V
+3.4 V
+3.3831 V to +3.4169 V
-3.4 V
-3.5 V
-3.4 V
–3.4169 V to –3.3831 V
10 mV
0
0 V
0 V
0 V
–3.5 mV to +3.5 mV
+3.4 V
+3.5 V
+3.4 V
+3.3827 V to +3.4173 V
-3.4 V
-3.5 V
-3.4 V
–3.4173 V to –3.3827 V
20 mV
0
0 V
0 V
0 V
–4.5 mV to +4.5 mV
+3.4 V
+3.5 V
+3.4 V
+3.3817 V to +3.4183 V
-3.4 V
-3.5 V
-3.4 V
–3.4183 V to –3.3817 V
50 mV
0
0 V
0 V
0 V
–7.5 mV to +7.5 mV
+3.4 V
+3.5 V
+3.4 V
+3.3787 V to +3.4213 V
-3.4 V
-3.5 V
-3.4 V
–3.4213 V to –3.3787 V
100 mV
0
0 V
0 V
0 V
–12.5 mV to +12.5 mV
+3.4 V
+3.5 V
+3.4 V
+3.3737 V to +3.4263 V
-3.4 V
-3.5 V
-3.4 V
–3.4263 V to –3.3737 V
5
Set as precisely as the instrument's offset resolution permits.
Performance verification (MSO/DPO70000C, MSO/DPO70000DX, and DPO7000C series)
MSO70000C/DX, DPO70000C/DX, DPO7000C, MSO5000/B, DPO5000/B Series
221
Summary of Contents for DPO5000 Series
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