Time Base Frequency Accuracy; Description; Equipment; Test Method - Keysight Technologies P Series Service Manual

2 Performance Tests

Time Base Frequency Accuracy

Description

The accuracy of the 100 MHz sample clock determines the accuracy of all
measurements that are based on samples taken over time. This test measures the
time base by dividing the sample clock by 10 (within the meter) and feeding it out
of the trigger output connector, where it can be directly measured by a frequency
counter.

Equipment

– Required test equipment:
– An alternative frequency counter can be used, as long as it has the appropriate

Test method

1 Enable the path that routes the time base signal to the trigger output
2 Using the 53132A, measure the frequency of the signal at the trigger output
– This test can be configured manually via the command
NOTE
– This test can also be configured manually via the front panel; access the
– No adjustment is available for this test if it fails (see
48
1 unit of 53132A frequency counter
bandwidth (>10 MHz)
connector.
connector.
SERV:BIST:TBAS:STAT ON, which enables the 10 MHz feed to the trigger
output connector (refer to the Programming Guide for further details on the
use of this command).
Service menu, select Self Test, and select Time Base to enable the 10 MHz
feed to the Trigger Output connector.
"Troubleshooting Guide").
Chapter 5,
Keysight N8262A Service Guide