Comtech EF Data DT-4500-A Series - Manual (Page 78)

DT-4500-A Series Downconverters Revision 1
Front Panel Operation MN-DT4500A
5–10
CONFIG: REDUNDANCY Auto/Manual
CONVERTER 123456789ABC
AUTO/MAN A-----------
Use this submenu to define backup as Automatic or Manual. This command provides for
automatic switching by the backup downconverter if both units are in the Redundancy
Mode. This command is only accepted by the backup downconverter. If a chain
downconverter is set in Manual Mode, the backup downconverter will log the occurrence
and not act upon further information from the downconverter until put into Automatic
Mode.
On the top line: The unit in use and its Application ID (identification label) are displayed
here.
On the bottom line: First, use the ◄ ► arrow keys to navigate to the AUTO/MAN setting,
and then use the ▲ ▼ arrow keys to set toggle switch over as A (Automatic) or M
(Manual).
CONFIG: REDUNDANCY FORCE
CONV 01 OFFSET=+00.00 DB
ACTIVATE BACKUP = NO
On the top line: First, use the ◄ ► arrow keys to navigate to the OFFSET operational
threshold setting (i.e., the limit defined to automatically trigger switchover to the backup
unit), and then use the ▲ ▼ arrow keys to set that value in 0.25 dB increments.
On the bottom line: First, use the ◄ ► arrow keys to navigate to the ACTIVATE BACKUP
setting, and then use the ▲ ▼ arrow keys to set toggle switch over as NO (i.e., no backup
will occur at the defined operational threshold), or FORCE (i.e., switchover will take place
automatically if operation exceeds the predefined operational threshold.
Note that this submenu is operational only with a backup unit assigned, and with the
switchover set as Automatic. In the absence of a designated backup unit and/or switchover
set as Manual, the following message displays:
NO UNITS CURRENTLY
BACKED UP OR IN MANUAL
Press ENTER or CLEAR to return to the previous menus, and then reconfigure the system to
operate as intended.
CONFIG: REDUNDANCY HSB
CONV# 01 FRQ= 3625.000
ATTN=00.00 AUTO OK