198 Keysight N9927-90001 User’s Guide
SA (Spectrum Analyzer) Mode
Channel Measurements
Frequency Range/Channel
When a Radio Standard is selected, the appropriate center frequency or
channel and span is set automatically. The frequency or channel number can
then be changed from the
Freq/Dist
menu. Learn how to select a Radio
Standard and channels in
The frequency range of an ACPR measurement can also be entered using
arbitrary frequencies.
When a Radio Standard is NOT selected, the center frequency of a previous
measurement is maintained when ACPR is selected.
Integration Bandwidth
The Integration Bandwidth of the carrier and offsets is the frequency span over
which power is measured.
To change Integration Bandwidth:
— Press
Meas Setup 4
— Then
Integrating BW
— Enter a value between 100 Hz and 100 MHz using the numeric keypad,
arrows, or the rotary knob.
— Press
Enter
How to define adjacent (Offset) channels
An offset represents a difference in center frequencies of the carrier channel
and its adjacent channel to be measured. The frequency range for each offset
is specified with an Offset Freq and Integ BW. Each offset that is created has a
Lower (carrier MINUS Offset Freq) and Upper (carrier PLUS Offset Freq) set of
frequencies.
— Press
Meas Setup 4
— Then
Offsets
— Press
Offset 1 2 3
to select an offset.
— Then
Offset State
to set that offset ON or OFF.
— Select
Offset Freq
This is the difference between the
carrier center
frequency
and the
center frequency of the offset channel
. Then enter a
value using the numeric keypad.
— Select
Offset Integ BW
This is the frequency range over which power is
measured in that offset; half of the range below and half above the Offset
Freq.
Содержание N9913A
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