Rohde & Schwarz R&S FSP Series, Operating Manual

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Operating Manual 1164.4556.12 - 06 4.97
R&S FSP Instrument Functions
Analyzer Mode
ADJUST
SETTINGS
The ADJUST SETTINGS softkey automatically optimizes the instrument settings for
the selected power measurement (see below).
All instrument settings relevant for a power measurement within a specific frequency
range (channel bandwidth) are optimized for the selected channel configuration
(channel bandwidth, channel spacing):
• Frequency span:
The frequency span should cover at least all channels to be considered in a
measurement.
For channel power measurements, the frequency span is set as follows:
(No. of transmission channels - 1) × transmission channel s
2 × transmission channel ban measurement margin
For adjacent-channel power measurements, the frequency span is set as a
function of the number of transmission channels, the transmission channel
spacing, the adjacent-channel spacing, and the bandwidth of one of adjacent-
channels ADJ, ALT1 or ALT2, whichever is furthest away from the transmission
channels:
(No. of transmission channels - 1) × transmission channel s
2 × (adjacent-channel s adjacent-channel bandwidth) + measurement
margin
The measurement margin is approx. 10% of the value obtained by adding the
channel spacing and the channel bandwidth.
• Resolution bandwidth: RBW
≤
1/40 of channel bandwidth
• Video bandwidth: VBW
≥
3 × RBW
• Detector: RMS detector
Trace math and trace averaging functions are switched off.
The reference level is not influenced by ADJUST SETTINGS . It can be separately
adjusted with ADJUST REF LVL.
The adjustment is carried out only once; if necessary, the instrument settings can be
changed later.
Remote command:
SENS:POW:ACH:PRES ACP|CPOW|MCAC|OBW
ACP LIMIT
CHECK
The ACP LIMIT CHECK softkey switches the limit check for the ACP measurement
on and off.
Remote command:
CALC:LIM:ACP ON
CALC:LIM:ACP:ACH:RES?
CALC:LIM:ACP:ALT:RES?