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Chapter 6 183
Analog Measurements - Screens and Control Fields
Analog Measurements
TX Power Measurement
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. When
the Input Port is set to Ant, four dashes (- - - -) appear in place of digits
for this measurement.
Use the spectrum analyzer to measure low-level RF power (≤ 60 mW) at
the ANT IN port.
See “Input Port” on page 201 or “TX Pwr Zero” on page 221 for more
information.
CAUTION
Connecting a signal of >60 mW to the ANT IN port can cause
instrument damage (although internal protection circuits can typically
withstand a short-duration signal of several Watts). If the overpower
circuit is triggered (signified by a warning message at the top of the
screen), remove the signal from the ANT IN port, and reset using
Meas
Reset
(press and release the
Shift
key, then the
Hold
key) or turn the
Test Set off and on to reset it.
Screens on which this field is displayed
AF ANALYZER
RF ANALYZER
RF GENERATOR
FM Deviation Measurement
This is the default setting for this measurement field. The FM deviation
measurement is the frequency deviation of the carrier. This
measurement field is only displayed when the AF Anl In field (on the
AF ANALYZER screen) is set to FM Demod or FM Mod.
See “Displaying AF Measurements” on page 57 for more information.
See also “AF Anl In” on page 185.
Screens on which this field is displayed
AF ANALYZER
RF ANALYZER
RF GENERATOR