User's Manual

ARCXTEND USER MANUAL – R1.4, ISSUE 4

the correct upstream RF channel.

If it does see the channel and can’t lock on,

reduce the Upstream Attenuation setting at

the Hub.

If it does not see the channel, and Cable

Interface Control and Automatic Frequency

Set are enabled, verify that the Hub ECM and

the subscriber cable modem are assigned to

the same upstream frequency and are

excluded from an upstream load balancing

group.

If it does not see the channel, go to the Hub

and check the following:

Using -20 dB monitor port of the Hub verify

the Hub is receiving a wireless signal from

the CPE.

If there is a signal, vary the Upstream

Attenuation setting at Hub until the cable

modem locks on the US channel.

If there is not

a signal:

Verify that the cable modem transmitter is

working.

Replace the CPE

Cable Modem does not receive an IP address Perform normal cable modem installation

troubleshooting procedures.

Cable modem does not receive time of day

(ToD)

Perform normal cable modem installation

troubleshooting

Cable modem does not receive config file Perform normal cable modem installation

troubleshooting

Cable modem initializes, receives a config file,

and then reboots

Make sure the configuration file being

downloaded to the cable modem does not

contain downstream channel information. The

downstream RF channel frequency being

delivered by the CPE to the Cable Modem is

different than what is received at the Hub.

Table 4-4: Cable modem registration