8. Record the negative-measured and positive-measured mean readings in the
worksheet as follows:
a.
Set the DC Voltage Source to V
negative
.
b.
Push the front-panel Wave Inspector
Measure
button.
c.
In the Measurements Setup window, go to the
Measurements
box. Click
the
More
button and then select
Mean
.
d.
View the
Mean
measurement value in the display.
e.
In the Measurement Setup window, select
Statistics
.
f.
Click
Reset
.
g.
Enter the mean reading in the worksheet as V
negative-measured
. (See
Table 22: Gain expected worksheet
h.
Set the DC Voltage Source to V
positive
.
i.
Click
Reset
again.
j.
Enter the mean reading in the worksheet as V
positive-measured
.
Table 22: Gain expected worksheet
Oscilloscope
Vertical Scale
Setting
V
diffExpected
V
negative
V
positive
V
negative-measured
V
positive-measured
V
diff
Test Result
(Gain
Accuracy)
2 mV/div
18 mV
-9 mV
+9 mV
5 mV
45 mV
-22.5 mV
+22.5 mV
10 mV
90 mV
-45 mV
+45 mV
20 mV
180 mV
-90 mV
+90 mV
50 mV
450 mV
-225 mV
+225 mV
100 mV
900 mV
-450 mV
+450 mV
200 mV
1800 mV
-900 mV
+900 mV
500 mV
4900 mV
-2450 mV
+2450 mV
1.0 V
9000 mV
-4500 mV
+4500 mV
20 mV at
250 MHz
180 mV
-90 mV
+90 mV
20 mV at Full
bandwidth
180 mV
-90 mV
+90 mV
9. Record Gain Accuracy as follows:
a.
Calculate
Vdiff
as follows:
Vdiff
= |
Vnegative-measured
-
Vpositive-measured
|
b.
Enter
Vdiff
in the worksheet. (See
Table 22: Gain expected worksheet
on
page 322.)
c.
Calculate
Gain Accuracy
as follows:
Performance verification (MSO/DPO5000/B series)
322
MSO70000C/DX, DPO70000C/DX, DPO7000C, MSO5000/B, DPO5000/B Series
Summary of Contents for DPO5000 Series
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