Freedom R8000 Series, Руководство пользователя

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AutoTune for Motorola APX Series Radios User Guide
54
6.18. Rx Digital Sensitivity (P25 BER)
NOTE: This test requires an analyzer with P25 Conventional test mode (R8-P25
option) capability.
The purpose of this procedure is to measure the radio receiver’s Bit Error Rate at a
given frequency. The TIA/EIA.CAAA standard BER rate is 5%. This is a test only; there
is no alignment.
RF Control Port Frequency Modulation Level
Generate RF IN/OUT Test Frequency Framed 1011 Hz Pattern,
2.83 kHz deviation
-116.0 dBm
Table 6-34. Analyzer Configuration for Rx Digital Sensitivity (P25 BER) test
6.18.1. 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 6-35. Rx Digital Sensitivity (P25 BER) test results