Comtech EF Data CDM-Qx, Installation And Operation Manual

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CDM-Qx Satellite Modem Revision 6
Front Panel Operation MN/CDMQx.IOM
(Config
%
Group
%
Redundancy
%
Mode)
Redundancy Mode:
Manual Auto ( ◄ ► , ENT)
Default is “
Manual
”. If “
Auto
” is selected, that means the back-up will automatically
take over once the designated prime is faulted, and vice-versa. If “
Manual
” is selected,
when the prime is faulted, the backup will not take over. Also, the user will have the
option to do force switching.
(Config
%
Group
%
Redundancy
%
Mode
%
Manual)
Redundancy Manual Mode:
Forced-Backup = Slot#1 ( ▲▼ , ENT)
If redundancy is configured (e.g. 1:1), force-backup menu will appear which will allow
the user to do force switching between back up and designated primary device.
5.7.1.5 (Config
%
Frame) – FRAMING MODE
Framing requires a modulator/demodulator pair grouped into a modem (see
Config
%
Group
).
Framing Mode: Unframed EDMAC
EDMAC-2 D&I++ (
◄ ► , ENT)
Select
Unframed, EDMAC
,
EDMAC-2
, or
D&I++
using the
◄ ►
arrow keys, then
press
ENTER
. The sub-branches available are:
(Config
%
Frame
%
Unframed) - UNFRAMED
No framing is selected. No overhead is added, and the unit will be compatible with other
manufacturer’s equipment, when operating in a ‘standard’ configuration.
(Config
%
Frame
%
EDMAC, or Config
%
Frame
%
EDMAC-2) -
EDMAC or EDMAC-2
Comtech EF Data proprietary framing is included. The framing permits the bi-directional
passing of M&C and AUPC data between local and distant-end units.
EDMAC
is
backwards compatible with the CDM-500, CDM-550, CDM-550T, CDM-600 and
CDM-600L.
EDMAC-2
is a reduced overhead version of EDMAC, and is not backwards
compatible with the modems listed above.
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