CDM-600 Satellite Modem Revision 7
Front Panel Operation MN/CDM600.IOM
6–24
CONFIG: MISC: G.703 CODE
Parameters may only be edited if the Interface Type is G.703.
Use the [←] [→] arrow keys to select the parameter to edit. Select either appropriate
G.703 code using the [↑] [↓] arrow keys, then press ENTER.
Note that the choices displayed here will depend on the G.703 interface type, which has
been selected. The choices are:
• HDB3 (for E1, E2 or sub-rate operation)
• B8ZS ( for T1 and unbalanced T2 operation)
• B6ZS (for balanced T2 operation)
CONFIG: MISC: IDR-ESC-TYPE
Parameters may only be edited if the Interface Type is G.703.
Parameters may only be edited if the Framing Mode is IDR.
This menu permits a user to decide if the 64 kbps channel in the IDR overhead (normally
reserved for the two 32 kbps ADPCM audio channels) should carry user data instead. The
rear panel Overhead connector provides the appropriate EIA-422 interface for this option.
Use the [←] [→] arrow keys to select the parameter to edit. Select the appropriate IDR-
ESC Type, using the [↑] [↓] arrow keys, then press ENTER.
CONFIG: MISC: ADPCM AUDIO VOLUME
This menu permits the gain (or volume) of the audio ESC circuits, for both Receive and
Transmit, to be varied. Note that the step size is 2dB.
Select the appropriate volume, using the [←] [→] arrow keys, and edit the volume using
the [↑] [↓] arrow keys, and press ENTER.

TX-1 VOLUME= +0 dB TX-2 VOLUME= -2 dB

RX-1 VOLUME= +2 dB RX-2 VOLUME= -4 dB

TX–IDR-TYPE: 64k DATA (64k DATA,AUDIO)

RX-IDR-TYPE: 64k DATA (64k DATA,AUDIO)

Tx G703/DDO CODE = AMI (AMI,B8ZS)

Rx G703/IDI CODE = AMI (AMI,B8ZS)