Configuring The Spectrum Hopping Error Threshold - Motorola BSR 2000 Configuration And Management Manual

Release 1.0

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.
The hopping threshold error rate is determined by the Forward Error Correction
(FEC) error-rate threshold value. If the error-rate threshold is configured, the
spectrum manager periodically polls the signal quality table of the member channels
to compute the error rate during the polling interval. If the error rate exceeds the
threshold, it triggers spectrum hopping for the affected channel. The error rate is a
fraction of 1000.
The default hopping threshold error rate is 10 or 1 percent. Use the hop threshold
error command in Cable Spectrum Group mode to adjust the acceptable hopping
threshold error rate:
MOT(config-spcgrp: <WORD>)#hop threshold error {<1-1000>}
where:
526360-001-00 Rev. B
where:
WORD is the spectrum group name.
200-3200 is the input power level, expressed in dB.
default -150 - +150> is the number of dB above or below the default input
power level. Refer to
1-255 is the priority number of the upstream power level hop action. When
no priority is assigned, the default priority is 128.
Table 6-17 describes the input power level parameters expressed in dB:
Table 6-17 Relative Input Power Levels
Power Range
-160 to +140 dB
-130 to +170 dB
-100 to +200 dB
-70 to +230 dB
-40 to +260 dB
Table 6-17 for more information on this setting.
Upstream Channel Width
200 kHz
400 kHz
800 kHz
1600 kHz
3200 kHz
MGBI
Configuring the CMTS
6-147