Adjacent-Channel Power Measurement Acpm - Wavetek IS-136 MS Operating Instructions Manual

IS-136 MS

Adjacent-Channel Power Measurement ACPM

WHY?
Requirement
HOW?
A
+
RESULt6 –1
RESULt7 xxxx Reference level in current transmitter channel
D
RESULt8 +1
Entry field for current
channel number
10-40
Adjacent-Channel Power Measurement ACPM
Adjacent-channel power is that part of mobile-station
power which is emitted as noise in each of the two
adjacent channels. To avoid adjacent-channel inter-
ference, the noise must not exceed a defined value.
Make the general test preparations.
Press in the burst display mask.
{ACPM}
Enter the number of the channel on which the mobile
station currently sends (Fig. 10.24). Entry of a frequency
value is not possible.
Channel-number calculation
824.010 ≤ ≤ ≤ ≤ f ≤ ≤ ≤ ≤ 825.000
825.030 ≤ ≤ ≤ ≤ f ≤ ≤ ≤ ≤ 848.970
Start the test with
results.
End the test with
{STOP}
burst display mask.
Test Results
Display shows adjacent-channel power related to reference
level measured in channel on which base station currently
sends. Values must not exceed specified values.
Relative power in lower adjacent channel
Relative power in upper adjacent channel
Fig. 10.24: IS-136-ACPM test mask.
f – 825.000
N =
0.03
f – 825.000
N =
0.03
. The display shows the test
{RUN}
. takes you back to the
{RETURN}
+ 1023