TC1720
(Optional Dual Optics)
User's Manual
Rev. 1.4
-12-
Chapter 4 - Bench Tests
General
It is highly recommended to conduct a bench test before actual installation. A bench test will allow the user
to get familiar with all the functions and features of the TC1720 in a controlled environment. Knowledge
of the TC1720's functions and features will facilitate installation and troubleshooting efforts later on.
Test Equipment Requirements
End user equipment required for testing:
1.
One BERT (Bit Error Rate Tester) test set with a DB37 Female adapter and appropriate interface
module (match pin assignments with the diagrams on page 3).
2.
Two short optical cable jumpers with appropriate connectors (ST or FC).
Pre-Installation Tests
1.
Make sure the appropriate power supply accompanies the TC1720 unit (see page 7).
2.
To verify that the unit functions properly, plug in only the power connector to the terminal (be sure to
observe correct polarity), without having any other cable connections to the unit.
3.
On the front panel, the appropriate green "Power A" or "Power B" LED should be illuminated (depending
on whether you plug into the "A" or "B" terminal on the back of the unit). Both lights should be on if you
utilize power redundancy (power is connected to both "A" and "B" terminals on the rear panel).
4.
The "ALARM" and "Rx-A" LEDs should be flashing.
5.
The "Vcc" LED should be illuminated. Please note: all other LEDs can be in a random state (flashing,
solidly lit, or off) as only upon proper receipt and transmission of a signal will the TC1720 set its LEDs
appropriately for normal operation.
