Fer With Awgn Tests; Test Procedure - Motorola V120x Instruction Manual

Test Procedures

FER with AWGN Tests

CDMA CELLULAR MOBILE RECEIVER TEST
T est Statu s
Con nected
Service O pt 2/9
Tes ting
Pass ed
Failed
M ax Frames
M ax Frames
M eas Cntl
Sin gle / Con t 1 000 0
Con fiden ce
95.0 0
%
FER Sp ec
0.5 0
%
Disp lay
Interim
Results
Yes / No
The other key receiver measurement for CDMA
phones is the FER with AWGN test. In this test,
large amounts of uncorrelated noise is added to
simulate the actual conditions encountered by a
CDMA phone in actual use. To make this
measurement:
1.Set the Sector A Power to -55 dBm/1.23 MHz.
2.Set the AWGN source to -54 dBm/1,23 MHz
(this means that the traffic channel is 16.6 dB
below the noise level!).
3.Arm the measurement by selecting Contin-
uous in the Meas Cntl field.
4.Under these conditions, a CDMA phone
should meet 0.5% FER with 95% confidence.
Standards specify other tests for other rates.
These can be performed by changing the Data
Rate and Traffc level to the specifed settings.
Motorola Confdential Proprietary
FE R
0.00
E rro rs Co unted
Frames Cou nted
T o Screen
Traffic
Data Mo de
Sctr A Pwr
Svc O pt 2 -7 5
dBm / BW C ALL CNT L
Traffic
Data Rate
-15 .6
Full RX TE ST
dB
Co nfig
E b / Nt
P RNT CNFG
AW GN
--------
-74
dBm / BW
49
To make a CDMA FER with
AWGN measurement:
%
•Use the same setup as for the receiver
sensitivity test
0
•Set Sector A Power to -75 dBm/1.23
36 7
MHz
•Set AWGN Power to -74 dBm/1.23
CD M A
MHz
Arm the Measurement
Analog
•Place the cursor at the "Cont" feld
under Meas Cntl
•Push the knob
CDMA T120x