Motorola BSR 2000 Configuration And Management Manual page 244

BSR 2000 Configuration and Management Guide
Example 1:
Use the cable upstream power-level default command in Interface Configuration
mode to set the input power level for a 3.2 MHz channel in relative mode from +11
dBmV to +5 dBmV:
MOT (config-if)# cable upstream 0 power-level default -60
The default input power level is reduced by 6 dBmV. The power level is now
+5 dBmV.
Example 2:
Use the cable upstream power-level default command in Interface Configuration
mode to set the input power level for a 3.2 MHz channel in relative mode from +11
dBmV to 0 dBmV:
MOT (config-if)# cable upstream 0 power-level default -110
The default input power level is reduced by 11 dBmV.
Setting the Upstream Power Level in Absolute Mode
Use the cable upstream power-level command in Interface Configuration mode to
set the upstream input power level in absolute mode:
Caution: Use caution when increasing the input power level in absolute
mode. The CMs on the HFC network increase their transmit power level by 3
dB for every incremental upstream channel bandwidth change, causing an
increase in the total power on the upstream channel. This may violate the
upstream return laser design parameters
MOT (config-if)# cable upstream <NUM> power-level <power>
where:
Example
Use the cable upstream power-level command in Interface Configuration mode to
set the upstream input power level to +5 dBmV in absolute mode, which keeps the
input power level at +5 dBmV regardless of the upstream channel bandwidth setting:
MOT(config-if)#cable upstream 0 power-level 50
6-58
NUM is the upstream port number.
power is the input power level, expressed in dB.
MGBI
Release 1.0
526360-001-00 Rev. B