Operating Manual 1302.6163.12 - 03 4.195
R&S ESU Instrument Functions
Analyzer Mode
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] Set the R&S ESU 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 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.
[CP/ACP CONFIG] Call the submenu for defining the channel configuration.
[NO. OF ADJ CHAN:
2 ENTER]
Select two adjacent channels for the measurement, i.e.
the adjacent channel and the alternate channel are mea-
sured.
[CHANNEL
BANDWIDTH: 1.23 MHz:
Ud: 30 kHz]
Set the channel bandwidth to 1.23 MHz in accordance
with IS 95. Set the adjacent-channel bandwidth to 30 kHz.
Upon entry of 30 kHz for the adjacent channel the alter-
nate channels are also set to 30 kHz.
[CHAN SPACING: 1.25
MHz:Ud 885 kHz: Ud: -
1.98 MHz] Ud: 2.97 MHz]
Open the list for entering the channel spacings.
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.
[ADJUST SETTINGS] 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.
[ADJUST REF LVL] Set the reference level equal to the channel power mea-
sured.
TX/ACP CHANNEL BW
CHAN BANDWIDTH
ADJ 30 kHz
ALT1 30 kHz
ALT2 30 kHz
TX 1.23 MHz
TX/ACP CHAN SPACING
CHAN SPACING
ADJ 885 kHz
ALT1 1.98 MHz
ALT2 2.97 MHz
TX 1.25 MHz
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