Comtech EF Data CRS-200 - Manual (Page 36)

Setup Guide CRS-200 Redundancy Switch
6–4 Rev. 1
6.2 Initial Setup
With the terrestrial cabling complete and the modems powered on, but the modems’ IF
ports still unconnected, apply power to the CRS-200 and perform an initial configuration
as described next.
6.2.1 Power Supply Modules
The auto-sensing AC power supplies do not require any adjustments Simply plug in the
supplied line cords and turn on the switches on the rear panel. Each CRS-200 is shipped
with two supplies, and it is recommended that both be used for maximum reliability. If
the redundant modem has been set to remote mode, as specified earlier, applying power
to both modules should result in the switch showing a green Unit Status fault. If the user
must operate with only one power supply module, the unused position may have its faults
masked by going to the “CONFIG, OPTIONS, ALARM-MASK, SW-ALARMS” menu
and selecting that supply.
6.2.2 Basic Switch Configuration
There are no internal jumpers to configure, and no other options to install. All
configuration is carried out entirely in software. The unit should first be configured
locally, using the front panel keypad and display. The unit will ship with a default
configuration that has traffic modem #1 as the currently bridged, and only active, modem
and the switch itself in Manual operating mode. It is the Manual (rather than Auto)
setting which causes the Stored Event LED to blink as a warning to the user.
Go to the “MONITOR, TM-CONFIGS” menu, and verify that all traffic modems have
been queried by the switch as to their current configurations. These are stored in the
switch’s memory for use in re-configuring the redundant modem. At this time, the user
should activate all desired traffic modems by using the “CONFIG, OPTIONS, ACTIVE-
MODEMS” menu.
The other LEDs are arranged in columns corresponding to each modem, and should
accurately reflect the alarm status of each. There is also an “online” indicator for each
modem, which should be lit for all traffic modems and extinguished for the redundant
modem, and a “bridged” indicator which should be illuminated for traffic modem #1
only. Note that the switch forces the redundant modem offline, since its Tx Traffic LED
is extinguished (even though it has no transmit alarm).