Rohde & Schwarz EMI Test ReceiverESCI - Page 297

R&S ESCI Analyzer - MEAS
1166.6004.12 4.165 E-1
2. 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 ESCI 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 function.
The measurement is carried out with the default settings 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:
2
ENTER] Select two adjacent channels for the measurement, i.e. the adjacent
channel and the alternate channel are measured.
[
CHANNEL BANDWIDTH:
1.23
MHz: : 30 kHz] 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 BANDWIDTH
ADJ 30 kHz
ALT1 30 kHz
ALT2 30 kHz
TX 1.23 MHz
Upon entry of 30 kHz for the adjacent channel the alternate channels
are also set to 30 kHz.
[CHAN SPACING:
1.25
MHz:
885 kHz: :
-1.98
MHz] :
2.97
MHz] Open the list for entering the channel spacings.
TX/ACP CHAN SPACING
CHAN SPACING
ADJ 885 kHz
ALT1 1.98 MHz
ALT2 2.97 MHz
TX 1.25 MHz
Upon entry of 885 kHz for the adjacent channel the channels 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 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.