User's Manual

ARCXTEND USER MANUAL – R1.4, ISSUE 4

“Disable” to turn it off. This parameter is useful when the Hub

is used for a non-DOCSIS application, such as the wireless

transport of a digital video or CBR (constant bit rate) voice

signal, and there is no DOCSIS channel on the cable plant.

Selecting the “Off” setting will prevent the ECM from

continually scanning for a downstream channel, when none is

present. The default setting is “On”

Select Upstream Band Chose which of the two copies of the upstream wireless

carrier being transmitted by the CPE is to be received by the

Hub and passed to the cable network. This parameter is used

to avoid potential interference on the upstream channel.

If High is chosen, then the Hub will receive the upstream

wireless carrier at 5300 MHz plus the frequency of the

upstream channel

If Low is chosen, then the Hub will receive the upstream

wireless carrier at 5300 MHz minus the frequency of the

upstream channel.

For example, if the upstream frequency is 32.0 MHz, the

wireless signal will be transmitted at 5332 MHz (High) and

5268 MHz (Low). As show in Table 5-2, certain combinations

of downstream wireless carrier frequencies and upstream

channels require a specific High or Low setting for optimal

performance. For all other downstream wireless carrier

frequencies, the default setting is High.

Auto Frequency Set Chose “ENABLE” to have ARCSmart automatically program

the Hub CATV EIA Input Channel and Upstream Frequency

parameters with the same values used by the ECM. When set

to “ENABLE” these parameters will change whenever the

values are changed at the ECM. This setting is used for plug-

n-play installation of the Hub. Chose “DISABLE” when these

parameters will be set manually to values different than those

used by the ECM. In this mode, the values entered will persist

regardless of the values used by the ECM and across a Hub

power outage or reboot. This mode is useful when the Hub

will transmit a non-DOCSIS channel, such as digital video or

CBR voice.

The default setting is “ENABLE”. Note: “Cable Interface

Control” must be set to “Enable” in order for this element to be

set to “Enable”.

Upstream Frequency Displays the frequency of the upstream channel that is being

received by the Hub.

CATV EIA Input Channel Displays the EIA standard channel number of the downstream

channel that is being received by the Hub.

Upstream Attenuation Chose the amount of attenuation (in dB) in the upstream

receive path of the Hub.