Comtech EF Data CDM-840 - Manual (Page 126)

CDM-840 Remote Router Revision 2
Ethernet-based Remote Product Management MN-CDM840
6–58
ECM Remote Configuration
The acceptable/valid operating ranges for items in this section are provided in parentheses.
• Mode – Use the drop-down list to select operation as Disabled, Offline, Wait, or Online:
Selection Description
Disabled This disables ECM operation.
Offline The remote will not transmit and remains in this standby mode until a new
state is selected, either locally or from the VMS.
Application examples for this mode include COTM (communications on the
move) or military maneuvers requiring radio silence conditions.
Wait Keeping CDM-840(s) in the ECM channel may result in oversubscription,
where some percentage of remotes wait their turn for pooled SCPC
resources. The user may choose to selectively control remotes through
manual, scheduled, or external switch request commands.
By selecting Wait, the CDM-840(s) remain in standby mode, but continue to
send status messages to the VMS and CTOG-250 Comtech Traffic
Optimization Gateway (w/integrated CDM-800 Gateway Router).
In Wait mode, messages directed to the VMS update connected link status,
while ACM, CDRP, and traffic data statistics sent to the CTOG-250 maintain
forward path ACM and routing tables (if in dynamic routing mode).
Online The CDM-840 powers up, requests network registration, and switches to
dSCPC at its minimum site policy data rate setting. This is the most common
mode of operation.
Click [Submit] to save.
• Multicast IP – Enter the IP address for the Multicast of the Transmission Announcement
Protocol (TAP) message that is sent out by the CDD-880 Multi Receiver Router to all of the
associated CDM-840 or CDM-840 Remote Routers in that group.
• Group ID (0 to 255) – Enter the Group ID number for the CDD-880 to which this unit
belongs.
• Power Hunt Enable – Use the drop-down list to select this function as Disable or Enable.
When enabled, the transmission power control feature for the unit modulator is activated
while in Entry Channel Mode (ECM). This function provides compensation during periods of
impaired transmission or for instances when the initial (baseline) power value is insufficient,
and assists in maintaining return link integrity.
• Rx LO Frequency – Assign a value, in MHz, to the Rx LO (Low Oscillator) Frequency.