Comtech EF Data CIM-300L - Manual (Page 151)

CiM-300L IP Enabled Satellite Modem Rev. 1
AUPC CD/CIM300L.IOM
125
8.1.1 AUPC – B
ETWEEN
T
WO
M
ODEMS
To operate, AUPC is enabled on both modems and they are setup as described in Table
8-1.
8.1.2 R
EMOTE
AUPC
This feature allows the user to monitor and control a remote modem location using the
front panel or serial port of the local modem. The operator can set or reset the following
commands:
! Baseband loopback
! TX 2047 pattern
! AUPC enable
8.1.2 R
EMOTE
M
ODEM
AUPC C
ONFIGURATION AND
M
ONITOR
The menu for this feature is remote AUPC, which is at the same level as the
Configuration and Monitor menus. The menus are structured as follows:
Menu Description
Function Select Remote AUPC Press <ENTER> to proceed.
Remote AUPC Configuration Press <ENTER> to proceed.
AUPC Enable Select On to enable Remote AUPC.
B-Band LoopBack Select On to place the unit at the distant end of the link in
loopback.
TX 2047 Pattern Select On for the distant end to TX a 2047 pattern. Select
Off to stop the pattern distant end.
Remote AUPC Monitor Press <ENTER> to proceed.
2047 Error This indicates the BER at the distant end measured from the
2047 pattern. This requires that the 2047 pattern is tuned
On at the near end.
8.1.3 S
ELF
-M
ONITORING
L
OCAL
M
ODEM
AUPC C
ONTROL
This AUPC mode allows the modem to adjust its carrier power to maintain a target
Eb/No while it monitors its own carrier returned through the satellite. This is often used
in broadcast applications where a hub maintains control of the outbound carrier that is
delivered to many remotes. This requires that the Earth Station is located within the
satellite footprint.
The self-monitoring AUPC does not require any special hardware or software options.
However, if the Overhead Card or Reed-Solomon Cards are installed, do not select either
the ASYNC or AUPC from the Modem Type menu located under the Utility: Modem
Type menu, because these are used for AUPC between two modems.