Comtech EF Data SMS-7000 - Manual (Page 53)

SMS-7000 Modem Protection Switch Installation
Rev. 3 2–19
2.5.2 Trouble Shoot Configuration
Refer to Table 2-2 for trouble shooting information.
Table 2-2. Trouble Shooting
Problem Possible Cause Remedy
Load comes up with a MOD or DEMOD
configuration error. 1. Switch controller not
communicating to the modems.
2. Backup modem cannot match all
the commands as the prime mode.
Switch controller will query the modems
with a MCP and DCP command. Data
will be stored and compared with backup
modem. If no match, perform the
following:
1. Rack contains mixed modems. One
modem is high power and one is
normal power out. Set modems to
≤ –5 dBm .
2. Software version numbers are not
compatible. Upgrade the firmware
as necessary.
3. SDM-8000 is emulating an
SDM-6000 and SDM-300
emulating an SDM-6000.
Reconfigure rack with specific
modems. (SDM-8000 will backup
an SDM-6000, and the SDM-300
will backup SDM-300 modem.)
4. Ensure communications to the
modem are operational.
A flashing number and the letter ‘F’
appears. Reporting an open cable and is reporting
a fault. Backup modem will indicate a ‘B’ and
either a –, *, or
↑.
The – indicates; Backup modem is ready
to take command for a specific modem.
The * indicates; Backup modem is
undergoing remote configuration.
The
↑ indicates; Backup modem has
taken command for a specific prime
mode.