Performance Verification
TDS 200 Series Digital Oscilloscope Service Manual
4–3
Performance Verification Procedures
Before beginning these procedures, two conditions must first be met:
H The instrument must have been operating continuously for twenty minutes
within the operating temperature range specified.
H You must perform the Self Calibration operation described below. If the
ambient temperature changes by more than 5° C, you must perform the Self
Calibration operation again.
The time required to complete the entire procedure is approximately one hour.
WARNING. Some procedures use hazardous voltages. To prevent electrical shock,
always set voltage source outputs to 0 V before making or changing any
interconnections.
This internal procedure is automatically performed every time the instrument is
powered on. No test equipment or hookups are required. Verify that no error
messages are displayed before continuing with this procedure.
The self calibration routine lets you quickly optimize the oscilloscope signal path
for maximum measurement accuracy. You can run the routine at anytime but you
should always run the routine if the ambient temperature changes by 5_ C or
more.
1. Disconnect any probes or cables from the channel 1 and channel 2 input
connectors.
2. Press the UTILITY button and select Do Self Cal to start the routine. The
routine takes approximately one minute to complete.
3. Verify that Self calibration passed.
Self Test
Self Calibration