System information

Configuring the CMTS
6-77
6. Use the hop action power-level command in Cable Spectrum Group mode to
change the power-level setting for a hop action, as shown below:
MOT(config-spcgrp:<WORD>)#hop action power-level {<default>}
[priority <1-255>]
where:
WORD is the spectrum group name.
power is the input power level, expressed in dB.
default is the number of dB above or below the default input power level.
Refer to Table 6-7 for more information on this setting.
1-255 is the priority number of the upstream power level hop action. When
no priority is assigned, the default priority is 128.
Table 6-7 describes the input power level parameters expressed in dB:
Configuring the Spectrum Hopping Error Threshold
A frequency hopping error threshold is configured as a criteria to apply the hopping
rules in instances when an unacceptable error rate occurs, which is caused possibly by
the poor signal quality of channel.
Note: Refer to the Setting the Upstream Power Level section for more
information on setting the upstream power level parameters for relative and
absolute mode.
Table 6-7Relative Input Power Levels
Power Range Upstream Channel Width
-160 to +140 dB 200 kHz
-130 to +170 dB 400 kHz
-100 to +200 dB 800 kHz
-70 to +230 dB 1600 kHz
-40 to +260 dB 3200 kHz