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Remote Loopback Bench Test
Purpose:
To test the Slave unit's optic functions and LED indicators and to verify the integrity of
the fiber optic link. When installing new Slave units in a network, a Remote Loopback
test should be performed between each individual Slave and the Master unit (one at a
time). This will verify the integrity of the system.
Equipment
Requirements:
One (1) Bit Error Rate Test (BERT) Set with appropriate interface module.
At least two (2) optical jumper cables (patch cords) with appropriate connectors.
Procedure:
Set up the bench test as shown in Figure 19. Make sure to set the internal DIP switches
accordingly for each unit. At the front panel of the Slave unit to be tested, slide SW2_1
(RMTLB) to the Down position. Set the tester up as a DTE or DCE device (the opposite
of the Master unit's lit "DCE" or "DTE" LED indicator). The "BRD-1" & "BRD-2" and
"RSP-1" & "RSP-2" LEDs should be dimly lit, showing the status of the looped signal.
The BERT tester (connected to the Master) should indicate a "SYNC" signal.
Figure 19. Remote Loopback Bench Test Connection Diagram
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TC2200R/S Bus
User's Manual
Rev. 2.2
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