Power Measurements - Meas Key - Rohde & Schwarz R&S FSP Series Operating Manual

R&S FSP
4.5.13 Power Measurements – MEAS Key
With its power measurement functions the R&S FSP is able to measure all the nec-
essary parameters with high accuracy in a wide dynamic range.
A modulated carrier is almost always used (except e.g. SSB-AM) for high-frequency
transmission of information. Due to the information modulated upon the carrier, the
latter covers a spectrum which is defined by the modulation, the transmission data
rate and the signal filtering. Within a transmission band each carrier is assigned a
channel taking into account these parameters. In order to ensure error-free trans-
mission, each transmitter must be conforming to the specified parameters. These
include among others:
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Additionally the menu contains functions to determine the modulation depth of AM
modulated signals and to measure the 3
The measurements and the corresponding settings are selected in the MEAS menu.
MEAS
TIME DOM POWER
CHAN PWR ACP MULT CARR ACP
OCCUPIED BANDWIDTH
SIGNAL STATISTIC
C/N / C/NO
MODULATION DEPTH
SPECTRUM EMISSION MASK
SPURIOUS EMISSIONS
SELECT MARKER
Side menu
TOI
TOI MKR CALC SRCH
HARMONIC DISTOR
The MEAS key opens the menu to select and set the power measurement.
The following measurements can be selected:
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Operating Manual 1164.4556.12 - 06
the output power,
the occupied bandwidth, i.e. the bandwidth which must contain a defined
percentage of the power and
the power dissipation allowed in the adjacent channels.
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Power in the time domain
Channel power and adjacent-channel power in the frequency domain with a single
carrier ("CHAN PWR ACP MULT CARR ACP" on page
Occupied bandwidth ("OCCUPIED BANDWIDTH" on page
Carrier-to-noise ratio ("C/N / C/NO" on page
Amplitude probability distribution
Modulation depth ("MODULATION DEPTH" on page
rd order intercept point.
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("TIME DOM POWER" on page
4.115)
("SIGNAL STATISTIC" on page
Instrument Functions
Analyzer Mode
4.76)
4.84)
4.103)
4.108)
4.116)
4.75