Agilent Technologies E4402B - Measurement Setup - Multi-Carrier Power

134 Chapter 2
Front-Panel Key Reference
Meas Setup
Optimize
Ref Level
Sets the reference level and attenuator to optimum values based on the
signal present at the input.
Key Access:
Meas Setup
Method
IBW RBW
Allows you to select between the integration bandwidth measurement
method (IBW), or the resolution bandwidth measurement method
(RBW). The resolution bandwidth method is most useful for measuring
cdmaOne and cdma2000 SRI signals.
Key Access:
Meas Setup, More
Total Pwr Ref
Auto Man
Allows you to specify the reference for the adjacent channel power
measurement when set to
Auto. Relative values are displayed,
referenced to the total power measured in the main channel.
Key Access:
Meas Setup, More
Limits
On Off
Turns the testing of the limit line on or off. Any offsets that are in the
Off state are not measured and their results will not appear on the
display.
Key Access:
Meas Setup, More
Filter
On Off
Adds root raised cosine filtering required by the standards when Radio
Std
, NADC or Radio Std, W-CDMA 3GPP are selected. The filter rolloff (
α)
is 0.22 for W-CDMA 3GPP and 0.35 for NADC.
Key Access:
Meas Setup, More
Noise Corr
On Off
When Noise Corr (On) is selected, a calibration of the noise floor is
performed and used to correct for analyzer noise floor contribution to
measurement levels.
Key Access:
Meas Setup, More
Multi-Carrier Power Meas Setup Menu Keys
To access the following keys for setting up a multi-carrier power
measurement, press
MEASURE, Multi-Carrier Power and then the
front-panel
Meas Setup key.
The multi-carrier power measurement is a measure of the power that
leaks into adjacent transmit channels. The results reported are
identical to the adjacent channel power measurement, but the setup is
different to allow for two or more carriers present.
Avg Number
On Off
Press Avg Number (On) to specify the number of averages used when
calculating the measurement result. The average will be displayed at
the end of each sweep.
Avg Number (Off) disables measurement
averaging.
Key Access:
Meas Setup