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115
Chapter 4, Making Measurements
BER
Making Measurements
BER
Loopback BER can only be measured while the Test Set is in Active mode, and
the mobile is in its test mode. This measurement is for raw BER, measured on a
traffic channel.
Each mobile manufacturer has their own method of enabling the test mode for
their phones. Those methods will not be discussed here.
BER Measurement Procedure
1. Make sure the Test Set is in Active mode.
2. Select
DIG MEAS
from the
To Screen
menu.
3. Select the
Dig Meas
field to display a list of available tests.
4. Select
BER
from the list.
5. Enter the number of bits to be measured in the
BER Bits
field. (Note: the number of
bits actually read will be calculated in whole frames.)
6. Put the mobile into its test mode.
7. Select
Arm
.
8. After the actual number of bits has been transmitted and received, the BER should be
displayed.
If your tests require that you measure BER with a known inserted bit error rate,
use the procedure, “BER Measurement with Inserted Bit Errors” on page 116.