R&S FSMR, Руководство по эксплуатации, Страница: 304 / 955

MEAS - Analyzer R&S FSMR
1166.3363.12 4.16-24 E-2
3. Measurement of signal/noise power density (C/No) of an IS95 CDMA signal
(frequency 800 MHz, level 0 dBm)
[ PRESET ] Set the R&S FSMR to the default setting.
[ FREQ: CENTER : 800 MHz ] Set the center frequency to 800 MHz.
[ AMPT : 0 dBm ] Set the reference level to 0 dBm.
MEAS ] Call the menu for the measurement functions.
[ CHAN PWR / ACP ] Select the channel and adjacent-channel power measurement. The
measurement is performed with the default setting or a previously
defined setting. The submenu for setting the desired new configuration
is opened.
[ CP/ACP CONFIG ] Call the submenu for defining the channel configuration.
[ NO. OF ADJ CHAN :
0 ENTER ] Do not select an adjacent channel for the measurement, i.e. the
measurement is carried out in one channel only.
[ CHANNEL BANDWIDTH :
1.23 MHz ] Set the channel bandwidth to 1.23 MHz in line with IS95.
[ ADJUST SETTINGS ] Set the optimum span (= 5 MHz), resolution bandwidth (RBW = 30
kHz), video bandwidth (VBW = 300 kHz) and detector (RMS) for the
measurement automatically. The absolute channel power and the
relative power of the adjacent channels and alternate channels are
displayed on the screen.
PREV
Go to the main menu for channel power measurement
[ ADJUST REF LVL ] Set the reference level equal to the channel power measured.
[ SET CP REFERENCE ] Set the measured channel power as a reference for the subsequent
measurements.
[ CP/ACP ABS / REL ] Select relative measurement related to the reference power set with
SET REFERENCE (result 0 dB).
[ CHAN PWR / HZ ] Select power measurement related to 1 Hz bandwidth (result -60.9 dB).
[ FREQ: CENTER : 805 MHz ] Set the center frequency to 805 MHz. The R&S FSMR measures the
channel power at 1.23 MHz bandwidth and outputs the result in dB
relative to the reference power and 1 Hz bandwidth.