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Chapter 23, TX Test Screen
Field Descriptions
Input Port
This field selects the RF IN/OUT or ANT IN port for making RF measurements.
The RF IN/OUT port must be used for making TX Power measurements on this
screen.
Operating Considerations
Maximum signal levels at each port are printed on the front panel.
If the RF power at the RF IN/OUT port exceeds allowable limits, a loud warning
signal sounds and a message appears at the top of the screen. If this occurs,
disconnect the RF power, press the MEAS RESET key, and allow the Test Set to
cool off for approximately 2 minutes before making any other measurements on
this port.
The ANT IN (antenna input) connector provides a highly-sensitive input for very
low-level signals (such as “off the air” measurements). You cannot measure TX
(RF) Power on this screen using the antenna port. However, low-level RF power
at the antenna port can be measured using theSpectrum Analyzer.
CAUTION: Connecting a signal of >200 mW to the ANT IN port can cause instrument damage.
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 press
the MEAS RESET key or turn the Test Set off and on to reset it.
RF Channel
The RF Channel field is displayed only when the RF Display field is set to
Chan on the CONFIGURE screen.
This field displays the current channel number. Channel tuning eliminates the
need to transmit and receive frequencies directly into the Test Set. Once the
radio’s RF channel standard is selected, you only have to enter the channel
number to automatically set the
RF Generator and RF Analyzer to the correct
frequency.
Operating Considerations
To utilize the correct transmit and receive frequencies select the appropriate
channel standard from the RF Chan Std field on the CONFIGURE screen.
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