Operational Verification; Power-On Self Tests - Keysight Technologies 53147A Service Manual

1 Performance Tests - Verifying Specifications

Operational Verification

Operational Verification is an abbreviated series of tests that you can perform
(instead of performing the Complete Performance Tests) to provide a high degree
of confidence that the instrument is operating properly. Operational Verification is
useful for incoming inspection, routine maintenance, and after instrument repair.
If you are not familiar with operating the instrument, you should review the
Chapter 1, "Getting Started," in the Keysight 53147A/148A/149A Operating
Guide. However, the procedures in this chapter are written so that little
experience is necessary. These procedures should be followed in the order in
which they appear.

Power-On Self Tests

This test is appropriate for the Keysight 53147A, 53148A, and 53149A.
NOTE
1 Inspect the instrument for damage.
2 Make sure no cables are connected to the instrument's inputs.
3 Connect the power cord to the instrument and the power source.
– Since the instrument's power supply automatically senses the line voltage,
NOTE
– It is normal for the fan in the instrument to run when the instrument is in
4 Press and release the Power button on the front panel.
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there is no AC input-voltage setting.
Standby mode. Power is supplied to the timebase whenever the
power cord is connected to maintain long-term measurement reliability, and
the fan helps to maintain the timebase's temperature stability.
Keysight 53147A/148A/149A Assembly Level Service Guide