Tests and Diagnostics
GARD 8000 SYS RFL Electronics
February 14, 2011 11-10 973.334.3100
11.4 COMMUNICATIONS MODULES
The GARD 8000 can be configured with different communications interfaces. Each interface has
multiple loop-back capabilities.
Most GARD 8000 communications interfaces can have up to 12 channels or functional modules
connected to them. Performing loop-back tests on the interface will loop all devices back. Care must be
taken to prevent false tripping as a result of loop back tests.
The data on the Local loop-back and remote loop-back tests are transmitted to the designated receiving
terminals and redirected. Care must be taken to isolate the outputs of GARD 8000 chassis to prevent
false tripping of GARD 8000 systems during test.
If an interface is configured for Loop timing the interface will have to be programmed for Internal
timing before executing loop-back tests.