Performance Verification
3. Connect the osc
illoscope channel under test to the DC voltage source as
shown in the following figure:
4. For each vertical scale (volts/division) setting in the following table, perfor m
the following steps:
a. Set the DC voltage source output level to the positive voltage listed and
then record the mean m ea surement as V
pos
.
b. Reverse the polarity of the DC voltage source and record the mean
measurement as V
neg
.
c. Calculate V
diff
=V
pos
-V
neg
and c ompare V
diff
to the accuracy limits in
the following table:
Vertical Scale
(volts/div) setting
DC voltage
source output levels Accuracy limits for V
diff
5 mV/div
+17.5 mV, -17.5 mV 33.6 mV to 36.4 mV
200 mV/div
+700 mV, -700 mV 1.358 V to 1.442 V
2V/div
+7.00 V, -7.00 V 13.58 V to 14.42 V
5. Set DC voltage source output level to 0V.
6. Disconnect the test setup.
7. Repeat steps 1 through 6 for all input channels.
4–4 TBS1000 Series O scilloscope Service Manual
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