User's Manual

Example, to set the Upstream RX to 6.4 MHz, with high 5.3 GHz band channel:
*log0303 [this typing is not echoed, not shown on the PC screen]
AR105RX[03]>uf6.4L
Initializing...
UF Upstream Frequency 6.4L MHz
The Table in the Section on Frequency Planning shows the cable modem frequency
and the corresponding 5.3GHz-band air frequencies.
Note: MSO may have a different Upstream frequency. If so, select nearest one in
the above table. The AX1255 will track the actual frequency.
4.4.5 RX Upstream Attenuation in dB
The Cable System needs to receive a signal from the ARCXtend Access Point
equivalent to what a standard wired cable modem at that same point in the CATV
system would produce. To achieve this, the Upstream attenuation can be set to an
appropriate value in decibels.
The module contains a programmable attenuator, which can be controlled over a 30
dB range in 2 dB steps, thus providing a 30 dB range in gain.
UdB<nn>, where nn is the value in decibels, and is an even number between 0 and
30.
Example, to set the attenuation to 12 dB:
*log0303 [this typing is not echoed, not shown on the PC screen]
AR105RX[03]>udb12
UDB Upstream Attenuation 12 dB
4.4.6 RX Upstream Enable
A method to enable or disable the wireless upstream signal path into the cable
upstream channel. In normal operation this will be set to “Enable” which is the
default. To disconnect the wireless upstream channel from the cable system
upstream channel, set to “Disable”.
In Disable mode all other module functions remain operating.
The command is:
UE<a>, where the alphabetical is y (yes) or n (no).
UEY (Upstream Enable - YES)
UEN (Upstream Enable - NO)
The factory default is NO.
Thus a unit inadvertently attached to a cable system without pre-configuration will
NOT generate RF into the cable system, nor generate RF into the air.
ARCXtend manual, August 2003 4-9