Chapter 2 153
Front-Panel Key Reference
MEASURE
Pressing Meas Setup after Occupied BW has been selected will access the
occupied bandwidth power measurement setup menu. Pressing
Radio
Standard
after Mode Setup has been selected will access all the Radio
Standards available for which this measurement can be applied
(GSM/EDGE and Bluetooth™, excluded). Pressing
Meas Control after
Occupied BW has been selected will access the occupied bandwidth
measurement control menu which allows you to pause or restart your
measurement, or toggle between continuous and single measurement.
Key Access:
MEASURE
ACP Measures the power present in adjacent transmit channels. The span is
set according to the six available offsets and their associated
integration bandwidths defined by you or the selected radio standard
(
Mode Setup, Radio Std). The root-raised cosine filter also affects the
span and is only available for NADC and W-CDMA 3GPP radio
standards.
When
Method is set to IBW, one sweep of the trace will be taken, and the
band power for each offset will be computed. Results will be displayed
relative to the total power or the power spectral density, depending on
your selection after pressing
Meas Setup, Meas Type. You may view the
results as the current trace, bar graph, or a combination. When
Method
is set to
RBW, the main channel and offets will be measured in zero
span and the combined results reported according to the
Meas Type
selection.
Pressing
Meas Setup after ACP has been selected will access the
adjacent channel power measurement setup menu. Pressing
Radio
Standard
after Mode Setup has been selected will access all the Radio
Standards available for which this measurement can be applied
(GSM/EDGE and Bluetooth™, excluded). Pressing
Meas Control after
ACP has been selected will access the adjacent channel power
measurement control menu which allows you to pause or restart your
measurement, or toggle between continuous and single measurement.
Key Access:
MEASURE
Multi-Carrier
Power
Multi-Carrier Power is the measure of the power that leaks into
adjacent transmit channels. The results reported are identical to the
adjacent power measurement, but the setup is different to allow for two
or more carriers present.
Key Access:
MEASURE
Power Stat CCDF
Plots curves which characterize the signal’s higher level power. It
provides the distribution of peak-to-average power ratios versus
probability. A CCDF curve is defined by how much time the waveform
spends at or above the given power level. The percent of time the signal
spends at or above the level defines the probability for that particular
power level.
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