R&S ESU Series Operating Manual page 222

R&S ESU
ADJUST The ADJUST SETTINGS softkey automatically optimizes the instrument settings for
SETTINGS 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:
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:
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:
ACP LIMIT The ACP LIMIT CHECK softkey switches the limit check for the ACP measurement
CHECK on and off.
Remote command:
Operating Manual 1302.6163.12 - 03
(No. of transmission channels - 1) × transmission channel spacing +
2 × transmission channel bandwidth + measurement margin
(No. of transmission channels - 1) × transmission channel spacing +
2 × (adjacent-channel spacing + adjacent-channel bandwidth) + measurement
margin
SENS:POW:ACH:PRES ACP|CPOW|MCAC|OBW
CALC:LIM:ACP ON
CALC:LIM:ACP:ACH:RES?
CALC:LIM:ACP:ALT:RES?
Instrument Functions
Analyzer Mode
4.191