R&S ESU Series Operating Manual page 227

R&S ESU
Measurement of signal/noise power density (C/No) of an IS95 CDMA signal
(frequency 800 MHz, level 0 dBm)
[PRESET]
[FREQ: CENTER:
800 MHz]
[AMPT: 0 dBm]
MEAS]
[CHAN PWR / ACP]
[CP/ACP CONFIG]
[NO. OF ADJ CHAN: 0
ENTER]
[CHANNEL
BANDWIDTH: 1.23 MHz]
[ADJUST SETTINGS]
PREV
[ADJUST REF LVL]
[SET CP REFERENCE] Set the measured channel power as a reference for the
[CP/ACP ABS / REL]
[CHAN PWR / HZ]
[FREQ: CENTER: 805
MHz]
4.196
Set the R&S ESU to the default setting.
Set the center frequency to 800 MHz.
Set the reference level to 0 dBm.
Call the menu for the measurement functions.
Select the channel and adjacent-channel power measure-
ment. The measurement is performed with the default set-
ting or a previously defined setting. The submenu for
setting the desired new configuration is opened.
Call the submenu for defining the channel configuration.
Do not select an adjacent channel for the measurement,
i.e. the measurement is carried out in one channel only.
Set the channel bandwidth to 1.23 MHz in line with IS95.
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.
Go to the main menu for channel power measurement
Set the reference level equal to the channel power mea-
sured.
subsequent measurements.
Select relative measurement related to the reference
power set with SET REFERENCE (result 0 dB).
Select power measurement related to 1 Hz bandwidth
(result -60.9 dB).
Set the center frequency to 805 MHz. The R&S ESU mea-
sures the channel power at 1.23 MHz bandwidth and out-
puts the result in dB relative to the reference power and 1
Hz bandwidth.
Operating Manual 1302.6163.12 - 03
Instrument Functions
Analyzer Mode