Agilent Technologies FieldFox N9912A User Manual page 91

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
 Enter a value between 100 Hz and 100 MHz using the numeric keypad, ▲|▼
 Press Enter
How to define adjacent (Offset) channels
An offset represents a range of frequencies over which power is measured. You
can specify up to three offsets. 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
 Press
 Then
 Select
 Select
How to set limits for adjacent channels
You can set a unique threshold power for each of the offsets that will cause a
FAIL indication (RED bar). This occurs when the calculated dBc power (on top
of the offset bar) is ABOVE the specified level.
To set limits, with an ACPR measurement on the screen:
 Press Limit 8
 Then
 Then choose from the following:


 Then enter a value using the numeric keypad, ▲|▼ arrows, or the rotary knob.
 Then
SA (Spectrum Analyzer) Mode
Integrating BW
arrows, or the rotary knob.
Offsets
to select an offset.
Offset 1 2 3
to set that offset ON or OFF.
Offset State
This is the difference between the carrier center frequency
Offset Freq
and the center frequency of the offset channel. Then enter a value using the
numeric keypad.
Offset Integ BW
measured in that offset; half of the range below and half above the Offset Freq.
Set Limits (1,2, or 3)
Sets a limit for the lower-frequency offset.
Lower Offset
Sets a limit for the higher-frequency offset.
Upper Offset
Limit Test ON OFF
This is the frequency range over which power is
91