R&S ESU Series Operating Manual page 226

R&S ESU
Measurement with user-specific channel configuration:
Measurement of the adjacent-channel power ratio (ACPR) of an IS95 CDMA signal
at 800 MHz, level 0 dBm. Similar to example 1, the setting can be simplified by using
CP/ACP STANDARD.
[PRESET]
[FREQ: CENTER: 800
MHz]
[AMPT: 0 dBm]
[MEAS]
[CHAN PWR / ACP]
[CP/ACP CONFIG]
[NO. OF ADJ CHAN:
2 ENTER]
[CHANNEL
BANDWIDTH: 1.23 MHz:
d : 30 kHz]
U
[CHAN SPACING: 1.25
MHz:U
1.98 MHz]
[ADJUST SETTINGS]
PREV
[ADJUST REF LVL]
Operating Manual 1302.6163.12 - 03
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 function. The measurement is carried out with the
default settings or a previously defined setting. The sub-
menu for setting the desired new configuration is opened.
Call the submenu for defining the channel configuration.
Select two adjacent channels for the measurement, i.e.
the adjacent channel and the alternate channel are mea-
sured.
Set the channel bandwidth to 1.23 MHz in accordance
with IS 95. Set the adjacent-channel bandwidth to 30 kHz.
TX/ACP CHANNEL BW
CHAN
TX
ADJ
ALT1
ALT2
Upon entry of 30 kHz for the adjacent channel the alter-
nate channels are also set to 30 kHz.
Open the list for entering the channel spacings.
d 885 kHz: d : -
U
d : 2.97 MHz] TX/ACP CHAN SPACING
U
CHAN
TX
ADJ
ALT1
ALT2
Upon entry of 885 kHz for the adjacent channel the chan-
nels ALT1 and ALT2 are set to 1770 kHz and 2655 kHz.
Upon entry of 1.98 MHz for the alternate channel 1 the
alternate channel 2 is set to 2.97 MHz.
Automatically set the optimum span (= 5 MHz), resolution
bandwidth (RBW = 30 kHz), video bandwidth (VBW = 300
kHz) and detector (RMS) for the measurement. The abso-
lute 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.
BANDWIDTH
1.23 MHz
30 kHz
30 kHz
30 kHz
SPACING
1.25 MHz
885 kHz
1.98 MHz
2.97 MHz
Instrument Functions
Analyzer Mode
4.195