Motorola BSR 2000 Configuration And Management Manual page 243

Release 1.0
Caution: If the power level is not explicitly set on the upstream interfaces,
they default to 0 dBmV in absolute mode with a 3.2 MHz, 2560 kilosymbols
per second rate. Ensure that the correct power level is set on each upstream
channel.
Table 6-9
power-level range and default power-level range for a specific upstream channel.
Setting the Upstream Power Level in Relative Mode
Use the cable upstream power-level default command in Interface Configuration
mode to set the upstream input power level in relative mode:
MOT (config-if)# cable upstream <NUM> power-level default <offset>
where:
526360-001-00 Rev. B
If the upstream input power level is set in relative mode, the input power level
changes when the upstream channel width is changed. For example, if the input
power level is +11 dBmV for a DOCSIS 3.2 MHz upstream channel bandwidth
setting in relative mode and is changed to 1.6 MHz, the default receive power is
+8 dBmV. The default power levels for the 3.2 MHz and 1.6 MHz channels are
equal relative to their respective channel bandwidth settings.
describes how the upstream channel bandwidth corresponds to the input
Table 6-9 Upstream Input Power Level Range Parameters
Upstream Channel
Bandwidth
200 KHz
400 KHz
800 KHz
1.6 MHz
3.2 MHz
NUM is the upstream port number.
offset is the number expressed in dB above or below the default input power level.
Default Power-level
Range
-1 dBmV
+2 dBmV
+5 dBmV
+8 dBmV
+11 dBmV
MGBI
Configuring the CMTS
Power-level
Range
-16 to +14 dBmV
-13 to +17 dBmV
-10 to +20 dBmV
-7 to +23 dBmV
-4 to +26 dBmV
6-57