Comtech EF Data CDM-710G - Manual (Page 98)

CDM-710G High-Speed Satellite Modem Revision 1
Front Panel Operation MN-CDM710G
6–22
6.3.1.4 CONFIG: Int1 (CDI-10-1 Single G.703 Interface Only)
IMPORTANT
Due to limitations of the backplane, the CDM-710G allows only one interface
to be active. For example, if Interface 2 is active, and Interface 1 is then
enable selected, the unit will automatically disable Interface 2.
Note: The menu branch and submenus depicted in this section are dependent on the presence
of the CDI-10-1 Single G.703 Interface card, installable in Interface Slot 1 only.
There is a single Tx/Rx port pair on this interface; there is also a common reference that may be
used as a Rx Buffer reference clock for either port. This selection will affect the reporting status in
the event of loss of External Clock – and subsequently, the switching logic – when the modem is in
a 1:1 redundancy configuration.
Intfc1 E3/T3/STS1:
Port1 Ext-Clk (E)
Select Port1 or Ext-Clk using the W X arrow keys, then press
ENTER
.
(CONFIG:) Intfc1 E3/T3/STS1
Æ Port1
Intfc1 Port1 E3/T3/STS1:
Type Line-Code Tx Rx ( E)
Select Type, Line-Code, Tx, or Rx using the W X arrow keys, then press
ENTER
.
If Intfc1 Port1 E3/T3/STS1: Æ Type is selected:
Intfc1 Port1 Type: E3 T3
STS1 34.368 Mbps ( E)
This menu allows port type selection for the interface.
The interface is data rate based with fixed data rates so the CDM-710G will automatically adjust
the symbol rate. Although the data rate does not change, the symbol rate will with changes to any
of the following: modulation, code rate, pilots, FEC frame.
Select E3, T3, or STS1 using the W X arrow keys, then press
ENTER
.
Upon entering the menu, the cursor blinks below the currently active interface and its Data Rate is
shown:
Port Type Selection Data Rate
E3 34.368 Mbps
T3 44. 768 Mbps
STS1 51.84 Mbps