AutoTune for Motorola APX Series Radios User Guide
25
4.20. Rx Sensitivity (P25 Phase II BER)
NOTE: This test requires an analyzer with P25 Phase 2 Test Mode (R8-P25_II
option) capability.
The purpose of this procedure is to measure the radio receiver’s Bit Error Rate at a
given frequency. The TIA/EIA.CCAA standard BER rate is 5%. This is a test only; there
is no alignment.
Mode
Generate
Port
RF IN/OUT
Frequency
Test Frequency
Modulation Type
HDQPSK
Test Pattern
1031 Hz Tone
Level
-116.0 dBm
Table 4-40. Analyzer Configuration for Rx Sensitivity (P25 Phase II BER) test
4.20.1. Test
The analyzer is setup as specified in this section’s Analyzer Configuration table. The
radio is placed into Test Mode at the lowest RX Test Frequency, ready to receive a
C4FM-modulated signal from the analyzer. Once BER synchronization is detected, the
analyzer output level is decreased until a BER of 5% is measured. The analyzer output
level at 5% BER is compared against test limits and the final results are written to the
log file.
Name
Description
Result
Pass or Fail. Digital Sensitivity (BER) output level within Max Limit
Frequency
Test Frequency
Bit Error Count Number of bit errors reported in the measured superframe
5% BER
Analyzer output level at which the radio BER measures 5%
Max Limit
Maximum Limit (inclusive) for Digital Sensitivity (BER) to Pass
Table 4-41. Rx Sensitivity (P25 Phase II BER) test results
