Technical data

Troubleshooting 4
7000 Series Oscilloscopes Service Guide 81
To run the internal self-tests
Self Test performs a series of internal procedures to verify that
the oscilloscope is operating properly.
It is recommended that you run the Self Test:
• after experiencing abnormal operation
• for additional information to better describe an oscilloscope
failure
• to verify proper operation after the oscilloscope has been
repaired
Successfully passing Self Test does not guarantee 100% of the
oscilloscope’s functionality. Self Test is designed to provide an
80% confidence level that the oscilloscope is operating properly.
1 Press the Utility key, then press the Service softkey.
2 Begin the internal self tests by pressing the Start Self Test
softkey.
To verify default setup
The oscilloscope is designed to turn on with the setup from the
last turn on or previous setup. However, if the Secure
Environment option is installed, the oscilloscope will always
execute a Default Setup upon power-up.
To recall the factory default setup:
1 Press the Save/Recall key.
2 Press the Default Setup softkey.
This returns the oscilloscope to its factory default settings
and places the oscilloscope in a known operating condition.
The major default settings are:
• Horizontal - main mode, 100 us/div scale, 0 s delay, center
time reference
• Vertical - Channel 1 on, 5 V/div scale, dc coupling, 0 V
position, probe factor to 1.0 if an AutoProbe probe is not
connected to the channel
7000 service guide.book Page 81 Thursday, October 16, 2008 12:18 PM