Acp Measurements - Keysight X Series Measurement Manual

Making MSR Measurements
MSR Downlink Signal Measurement

ACP Measurements

This section explains how to make the Adjacent Channel Leakage Power Ratio
(ACLR or ACPR) measurement for MSR downlink signal. ACPR is a
measurement of the amount of interference, or power, in an adjacent
frequency channel. The results are displayed as a bar graph or as spectrum
data, with measurement data at specified offsets. For more information on this
measurement, see
on page
For signal setting, see
Measurement Procedure
Step
1. Perform the common
configuration.
2. Recall the masks.
3. Recall the masks.
28
"Adjacent Channel Power (ACP) Measurement Concepts"
56.
"Setting the Downlink Signal" on page
Action
"Common Measurement
See
Procedure (Downlink)" on
page 16
.
Meas ACP
Press , .
Recall, Data, Mask then
Press
Open...
,a file open dialog appears.
Select the appropriate file under
masks\ACP_BS and click open. This will
apply the Offset/Limit settings quickly.
The other parameters will not be
changed.
Notes
It is not necessary if you already did it in other
measurements.
The ACP measurement results including the
bar graph with the spectrum trace graph
overlay. The graph (referenced to the total
power) and a text window are displayed. The
text window shows the absolute total power
reference, while the lower and upper offset
channel power levels are displayed in both
absolute and relative readings. The indicator
PASS/FAIL is on the top left of the screen.
At the bottom of the screen, there is a
message to indicate which mask file is
recalled. In this example,
ACP_BS_MSR_Carr_both_5MHz_pairE-UTRA_
both_5MHz_CarB.mask is used.
Keysight N9083A & W9083A Measurement Guide
14.