Measuring Loopback Bit Error Ratio - Agilent Technologies 8960 Series Reference Manual

Measuring Loopback Bit Error Ratio

1. Configure the mobile station to operate in loopback test mode 1 so that it re-transmits the dedicated traffic
channel (DTCH) data it decoded from the test set's 12.2 kbps reference measurement channel downlink.
2. Press the
Measurement selection
3. Select the Loopback BER measurement.
4. Press the Bit Error Setup (
5. Set the measurement parameters as needed for your measurement situation.
To see how low levels of cell power into the mobile affect the bit error ratio, press Cell Power (
reduce the level. With the level into the UE set to -106.70 dBm/3.84 MHz, the example above indicates a failed
BER value (the 3GPP standard specifies a BER of no more than 0.1% at this input level).
key.
) key.
F1
Observe how reducing the cell power
to low levels causes the bit error
ratio to increase.
S:\Hp8960\E1963A WCDMA\3.2 release\Reference Guide\Chapters\wcdma_man_measurements.fm
WCDMA Measurements Using FDD Test Operating Mode
) and slowly
F7
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