Performance Verification
TDS1000B and TDS2000B Series Oscilloscope Service Manual
4-13
8. Swap the connections to the positive terminal of the power supply with those
at the negative terminal as shown next.
Power supply
Voltmeter
BNC-to-Dual
Banana adapter
Red leads
Black leads
Positive
Oscilloscope under test
9. Repeat steps 4 through 6 for the values of --0.04 V through --1.8 V.
10. Enter the Minimum Margin number (cell I16) for the channel tested in the
test record.
11. Repeat steps 1 through 10 until all input channels have been checked.
Data Verification. To verify data, set the spreadsheet to present a line graph of
columns D, E, and F. Verify that no error values (the blue line in the center) go
above the yellow line (upper line), or below the purple line (lower line). For
calculations involved in this example, refer to the data in the previous table.
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