Performance Ve ri fi cation
Performance V
erification Procedures
The Performance Verification P rocedures consist of a self test and several check
steps, which check the oscilloscope performance to specifications. The following
three condit
ions must be met before performing these procedures:
1. The oscilloscope must have been operating continuously for twenty (20)
minutes in a
n environment that meets the operating range specifications for
temperature and humidity.
2. You m ust pe
rform the Signal Path Compensation (SPC) operation described
instep2oftheSelf Test before evaluating specifications. (Se e page 62, Self
Test.) If the operating temperature changes by more than 10 °C (18 °F), you
must perform the SPC operation again.
3. You must connect the oscilloscope and the test equipment to the same AC
power circuit. Connect the oscilloscope and test instruments to a common
power strip if you are unsure of the AC power circuit distribution. Connecting
the oscilloscope and test instruments to separate AC power circuits can
result
in offset voltages between the equipment, which can invalidate the
performance verification procedure.
The ti
me required to complete the entire procedure is more than one hour.
To ensure instrument performance to the Level Measurement Uncertainty
specification, it is necessary to check at many points, which can add significant
time to the procedure.
WARNING. Some procedures use hazardous voltages. To prevent electrical
shock, always set voltage source outputs to 0 V before making or changing any
in
terconnections.
MDO4000 Series Specifications and Performance Verification 61
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