Tx Freq Error/Tx Frequency; Tx Power; Tx Pwr Zero - HP 8920A User Manual

TX Freq Error/TX Frequency

TX Power

TX Pwr Zero

CAUTION: RF power must not be applied while zeroing. Set the RF Generator screen's Amplitude
field to off to prevent internal cross-coupling into the power detector while zeroing.
This measurement displays Transmitter Frequency Error or absolute Transmitter
Frequency.
See Also
Tune Mode field description (this page)
Transmitter Power measures RF power at the RF IN/OUT port.
Operating Considerations
Only the RF IN/OUT port can be used for measuring TX Power on this screen.
When the
Input Port
for this measurement.
Use the Spectrum Analyzer
ANT IN port.
The transmitter power zero function establishes a 0.0000 W reference for
measuring RF power at the RF IN/OUT port.
Operating Considerations
When power is applied to the RF IN/OUT connector, the temperature of the
internal circuitry increases. This can cause changes in the TX Power measurement
when low power levels are measured immediately following high power
measurements.
When alternately making high and low power measurements, always zero the
power meter immediately before making the low power measurements; this
provides the best measurement accuracy.
1. Optional on some Test Set models.
Chapter 4, Adjacent Channel Power Screen
is set to , four dashes (- - - -) appear in place of digits
Ant
1
to measure low-level RF power (
Field Descriptions
≤
200 mW) at the
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