Performance Verification
Performance V
erification Procedures
The following three conditions must be met prior to performing these procedures:
1. The oscilloscope must have been operating continuously for twenty ( 20)
minutes in an environment that meets the operating range specifications for
temperature and humidity.
2. You must perform a signal path compensation (SPC). See Signal Path
Compensation in the Tektronix 4000 Series Digital Phosphor Oscilloscopes
User Manua
l. If the operating temperature changes by more than 10 °C
(18 °F), you must perform the signal path compensation again.
3. You mus t c
onnect the oscilloscope and the test equipment to the same AC
power circuit. Connect the oscilloscope and test instruments into a common
power strip if you are unsure of the AC power circuit distribution. Connecting
the oscilloscope and test instruments into s eparate AC power circuits can
result in offset voltage s between the equipment, which can invalidate the
performance verification procedure.
The time required to complete the entire procedure is approximately one hour.
WARNING. Some procedures use hazardous voltages. To prevent electrical
shoc
k, always set voltage source outputs to 0 V before making or changing any
interconnections.
Sel
fTest
This procedure uses internal routines to verify that the oscilloscope functions and
passes its internal self tests. No test equipment or hookups are required. Start
the self test with these steps:
1. Disconnect all probes and cables from the oscilloscope inputs.
2. Push the front-panel Default Setup button to set the instrument to the factory
default settings.
3. Push the Utility menu button.
4. Push the Utility Page lower-bezel button, and turn the Multipurpose a knob
to select Self Test.
5. Push the Self Test lower-bezel button. The Loop X Times side-bezel menu
will be set to Loop 1 Times.
6. Push the OK Run Self Test side-bezel button.
7. Wait while the self test runs. W hen the self test completes, a dialog box
displays the results of the self test.
8. Push the Menu Off button to clear the dialog box and Self Test menu.
MSO4000 and DPO4000 Series Specifications and Performance Verification 35
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