Cisco Systems UBR904 manual show controller cable-modem tuner, Syntax Description, Command Mode

Command Reference

show controller cable-modem tuner

To display the settings for the upstream and downstream tuners used by a cable modem, use the show controller cable-modem tuner Privileged EXEC command.

show controller cable-modem tuner

Syntax Description

There are no key words or arguments for this command.

Command Mode

Privileged EXEC

Usage Guidelines

This command first appeared in Cisco IOS Release 11.3 NA.

Sample Display

The cable modem’s tuner settings are displayed in the following example. See Table 3 for output field possibilities and descriptions.

uBR904# show controller cable-modem 0 tuner Tuner: status=0x00

Rx: tuner_freq 507000000, symbol_rate 5360736, local_freq 11520000 snr_estimate 17488, ber_estimate 0, lock_threshold 26000

QAM not in lock, FEC not in lock, qam_mode QAM_64

Tx: tx_freq 20000000, power_level 0x3E, symbol_rate 1280000

Table 3 Show Controller Cable-Modem Tuner Field Descriptions

FieldDescription

tuner_freq Indicates the current downstream frequency.

symbol_rate Indicates the downstream or upstream symbol rate in use.

snr_estimate Signal to noise estimate in dB X 1000.

ber_estimate Bit error rate estimate (always 0).

QAM status Indicates if QAM/FEC loc has been acquired and the modulation mode in use.

tx_freq Current upstream frequency.

power_level Transmit power level as set in the hardware. The units are unique to the hardware used. Use the show controller cable-modem 0 mac state EXEC command to see the power level in dBmV.

Related Commands

show controller cable-modem

show controller cable-modem bpkm show controller cable-modem des show controller cable-modem filters show controller cable-modemlookup-table

38Release 11.3(4)NA