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CDM-625 Advanced Satellite Modem
Front Panel Operation
5.2.1.2
CONFIG: Mode
MODE is a key parameter when configuring the modem. To simplify the menu
choices, you must first determine the INTERFACE and FRAMING type for both
Transmit and Receive. Once these have been selected, you are presented only with
menu choices that are applicable to those particular modes. For example:
•
•
Mode:
(422,V35,G703s,Audio,LVDS,HSSI,IP,ASI)
The screen shown here depicts an Interface Type menu screen. You may select Interface Type
and Framing for both Tx and Rx from this menu. Use the
parameter to edit. The bottom line indicates the available options for the active parameter. Not
all options are always available – they depend on other settings or on the modem's activated
FAST options.
The first parameter is the Interface Type. The options are:
► IP-ACM
► G.703s:
o G.703B (Balanced)
o G.703U (Unbalanced)
Interface Notes:
1. The IP-ACM mode choice restricts the available framing types to NONE or EDMACs.
2. The list of available Interface Types includes Audio when a unit ships with the Two
Channel Audio Drop Hardware Option installed. The Audio mode choice permits you
to carry 2 x 32 kbps ADPCM audio as the primary data. This mode restricts the
available framing types to IBS or EDMAC (see the selection table and the
explanations on the next page).
Use the
arrow keys to scroll through the available options, and then press ENTER.
▲▼
If the cursor is on the second parameter – the Framing Type – the display appears as shown:
Mode:Tx=RS422:NONE
(None IBS IDR D&Is EDMACs ESC++)
If selecting a G.703 interface, the data rate menu is restricted to only the
appropriate G.703 rates.
If selecting an IDR framing mode, the data rate choices are limited to only
those rates specified by IESS-308.
Tx=RS422:NONE
Chapter 17. ADAPTIVE CODING AND MODULATION (ACM)
Rx=RS422:None
► LVDS
► HSSI
► IP
► ASI
Rx=RS422:None
5–10
Revision 13
MN-CDM625
◄ ►
arrow keys to select the
► RS422
► V.35
► Audio
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