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Chapter 3, Mobile Station CDMA Tests
FER (Frame Error Rate)
8. Arm another FER measurement.
1. Select the Arm field to begin another FER test.
Measurement Overview
64
During this test, FER is measured with the AWGN (Additive White Gaussian
Noise) generator turned on. The relative settings of AWGN, Sector Power, and
Traffic, along with Data Rate provide a value called E
signal-to-noise ratio in analog radio test.
Test standards require FER testing at various levels of E
using the Data Rate and Traffic fields. The value you enter in the FER Spec field
provides Pass/Fail criteria for the test, which will be more stringent at higher
values of E
/N
.
b
t
Because the Test Set supports the Confidence Interval
FER, the number of frames tested will typically be far less than the number of
frames entered in the Max Frames field. This speeds up FER tests dramatically.
This test is fully described in "Demodulation of Forward Traffic Channel in
Additive White Gaussian Noise," found in standards such as TIA/EIA/IS-98-A or
J-STD-018.
1. Refer to Appendix A in the appropriate test standard for a description of Confidence
Interval testing.
CDMA CELLULAR MOBILE RECEIVER TEST
Test Status
FER
Connected
Svc Opt 2
Testing
Errors Counted
Passed
Failed
Frames Counted
Max Frames
Meas Cntl
Max Frames
Traffic
10000
Single/Cont
Data Mode
Arm
Confidence
Svc Opt 2
Disarm
95.00
%
FER Spec
Data Rate
3.00
Full
%
Display
Eb/Nt
Interim
3.77
Results
Yes/No
/N
, which is analogous to
b
t
/N
b
1
procedure for testing
%
Sector A
To Screen
Power
CDMA
-75.0
CALL CNTL
dBm/BW
Traffic
Analog
-16.3
RX TEST
dB
Cnfig
PRNT CNFG
AWGN
-74.0
dbm/BW
, which are adjusted
t
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