ADC Digivance CXD, Operation Manual

Page: 70 / 74

ADCP-75-192 • Issue 2 • June 2007
Page 58
© 2007, ADC Telecommunications, Inc.
4.7.6.3 Hub Up Converter (HUC) Tone Test
The HUC tone will be enabled at all times, unless explicitly disabled via the HUC MIB. Its
frequency corresponds to the last channel in the band set for that tenant-sector. Additional
requirements are:
• The HUC tone level is –70 dBm relative to the antenna port at the RAN.
• If the test tone is not detected at the BIM, it and the HUC are reported as faulting.
• See “SNMP Agent and Fault Isolation Guide” for details.
4.7.7 PA Overpower Protection
PA Overpower Protection (POP) is a software function that prevents damage to the PA as well
as preventing the PA from exceeding FCC spurious output limits.
POP measures the PA Output Power once per second from the RUC/PA MIB. If the PA Output
Power exceeds a determined threshold, then POP will deactivate the FGC process for the tenant-
sector in question, add attenuation to the RUC, and set a fault in the FGC MIB. Once the PA
Output Power returns to a value that is less than a determined threshold, then the POP fault will
be cleared and normal operation will resume.
The limits are set to 1 dB above the rated output for a given Power Amplifier. For 10 watt PAs
(40 dBm), the limit is 41 dBm. For 20 watt PAs (43 dBm), the limit is 44 dBm.
See the “SNMP Agent and Fault Isolation Guide” guide for details.