User Manual

ADCP-75-192 • Issue 1 • December 2005 • Section 4: BTS Integration
Page 4-2
 2005, ADC Telecommunications, Inc.
FBHDC PA
RAN
PA
Output
Power
RUC
Attn
RAN
Output
Power
Output
Loss
Hub
Composite
Input
Power
RUC
Attn
Offset
FBHDC PA
RAN
PA
Output
Power
RUC
Attn
RAN
Output
Power
Output
Loss
Hub
Composite
Input
Power
RUC
Attn
Offset
Figure 4-1. FBHDC Direct Cable Balancing
Table 4-1 shows the recommended power levels and gains for the various CXD bands.
Table 4-1. Forward Setting
BAND COMPOSITE
INPUT POWER
PA OUTPUT
POWER
RAN OUTPUT
POWER
FORWARD GAIN
SMR-A -7 dBm +37 dBm +35 dBm +42 dB
SMR-B -7 dBm +37 dBm +35 dBm +42 dB
Cellular -4 dBm +40dBm +38 dBm +42 dB
PCS -4 dBm +43 dBm +41 dBm +45 dB
The FBHDC input balancing procedure is as follows:
1. Insert signals into FBHDC at the recommended input level (composite)
2. Using the transceptTenantCalTable.transceptTenantRanYOutputPower fields of the
Tenant OAM MIB, examine the PA output power for each RAN in the simulcast
3. Using the transceptTenantGenTwoTable. transceptTenantRucYAttenOffset field in the
Tenant OAM MIB, adjust the RUC attenuator to perform final adjustments with all
carriers present. A positive offset lowers the output power and a negative offset increases
it.