Tests and Diagnostics
GARD 8000 SYS RFL Electronics
February 14, 2011 11-20 973.334.3100
Loop-Back Mode Tests:
Each loop-back mode has an Enable / Disable button associated with it. By clicking on the button the
user can enable different types of loop-back tests. When a test is disabled the assigned button is green,
when a test is enabled the button will be red. The test will not start until the execute button is selected..
There is a “Loop-Back Status” indicator that will turn red and display “ACTIVE” if any of the loop-
back tests are currently being run or will be green and “DISABLED” if all loop-back modes are
disabled. The Digital Interface will also issue a minor alarm while in loop-back and the Digital
Interface button on the inventory pages will be yellow.
The radio buttons next to each of the loop back tests allows the operator to enable or disable the test.
Click on the radio button to change the state and click on the “Execute” button to activate the test.
Local Loop-Back:
The local loop-back function loops the data being transmitted to the remote terminal back on to the
receive portion of the C37.94 interface module. The received data from the remote terminal is
interrupted. The transmit data from the local terminal is passed on to the remote terminal and
redirected back to the local received data path. See figure 11-9.
Figure 11-9. Local Loopback
If the C37.94 interface module is Internally timed:
Click on the “Local Loop-Back” button to enable.
Click on “Execute”.
Set the devices, TPS channels or Functional modules, TX and RX addresses to the same
value.
If the C37.94 interface is in Loop timing:
Set the digital interface to internal timing on the settings page.
Click on the “Local Loop-Back” button to enable.
Click on “Execute”.
Set the devices, TPS channels or Functional modules, TX and RX addresses to the same
value.
Terminal
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