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Using
the
Power
Measurement
Functions
to
make
Transmitter
Measurements
The power menu provides several powerful transmitter measurement
functions that are easy to use. The measurements include:
l Occupied Bandwidth
l Adjacent Channel Power Ratio
l Channel Power
These transmitter power measurements can be used to measure analog and
continuous carrier digital radios. The transmitted signal can be tones, noise,
or a combination of tones and noise, without affecting the measurement
accuracy. The power is measured in an rms way, so that power and power
ratio values are consistent with power meter results.
The signal or signals being measured should be displayed before activating
the measurement. The spectrum-analyzer center frequency should be set
to the carrier frequency and the reference level should be set so that the
signal is near the top graticule. A power measurement may require the user
to enter the channel spacing and/or channel bandwidth before activating the
function.
The spectrum analyzer automatically selects all of the other settings for
accurate and efficient measurements. There is also a manual mode where the
user selects all of the spectrum-analyzer settings. The
manual
mode should be
used carefully since it has limitations and requirements that are necessary to
ensure the measurement is accurate.
Power. measurements are made continuously, updating at the end of each
sweep. This allows you to make adjustments and see changes as they
happen. They can also be made on a single sweep, providing time to study or
record the data.
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