Maintenance
9
Keysight N1913/1914A User’s Guide
223
Fan
This test confirms that the internal cooling fan is operating.
Real Time Clock (RTC) Battery
The RTC battery provides power for the real time clock circuitry on the
motherboard when the power meter is powered off. The real time clock is used to
provide the timestamp needed for N8480 Series power sensors’ aging sense data.
During RTC battery test, the RTC battery power level is determined by converting
the ADC value of the RTC battery power level read from the FPGA, to voltage level.
If the battery power level is less than a pre-specified threshold (threshold to be
defined later), the test will fail. An error will be logged in the error list if the test fails.
Channel CW Path
A brief test on CW meter linearity performance.
NOTE
Ensure that all power sensors have been disconnected from the meter before
performing self-test.
Содержание 1914A
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