Specifications

Fully Coded 3GPP W-CDMA Personality User’s and Programming Guide 2-95
ESG Family Signal Generators Using Functions
Option 200 3GPP W-CDMA Base Station Performance Testing
4. Compare the measured BER value in the column titled, “Verification BER Value” with
the limits from the column titled, “Specification Limitations.”
• If the measured value is within the limits, continue to subsection 2.
• If the measured value is outside the limits, determine the cause of failure and repair
the BS. After repair, return to Step 1 of this subsection.
Subsection 2. ACS Measurement
Complete the following steps to make an ACS measurement on your BS.
1. Modify the amplitude of the W-CDMA stimulus to
−
115.00 dBm.
On ESG 1:
Press
Amplitude >
−
115 > dBm.
2. Introduce the adjacent channel interferer.
The adjacent channel stimulus is made available at the RF output of ESG 2. In
accordance with the 3GPP W-CDMA RF specification, the center frequency of this
adjacent channel interferer can be offset
±
5 MHz from the center frequency of
fundamental waveform. The amplitude of the adjacent interferer is
−
52.00 dBm.
On ESG 2:
Press
RF On/Off (or executing the appropriate SCPI command) until the RF ON
annunciator is displayed on ESG 2.
3. Measure the BER of the BS in the presence of the adjacent channel stimulus.
The controller or BER test platform is measuring the bit error ratio of the BS in the
presence of both the W-CDMA stimulus from ESG 1 and the adjacent channel interferer
from ESG 2.
4. Record the BER measurement result in the column titled, “Adjacent Channel BER
Value” in Table 2-50.
5. Compare the recorded value of the BER measurement with the allowable values and
record the PASS/FAIL status for the BS.
Example Test Record
Use the following table to record the data from the ACS performance test.
Table 2-50 ACS Performance Test Record
Verification BER
Value
Adjacent Channel
BER Value
Specification
Limitations
PASS/FAIL Status
BER ≤0.001