TC1720
(Optional Dual Optics)
User's Manual
Rev. 1.4
-8-
Chapter 2 - Installation
Unpacking the Unit
Before unpacking any equipment, inspect all shipping containers for evidence of external damage caused
during transportation. The equipment should also be inspected for damage after it is removed from the
container(s). Claims concerning shipping damage should be made directly to the pertinent shipping agencies.
Any discrepancies should be reported immediately to the Customer Service Department at TC Communi-
cations, Inc.
Equipment Location
The TC1720 should be located in an area that provides adequate light, work space, and ventilation. Avoid
locating it next to any equipment that may produce electrical interference or strong magnetic fields, such as
elevator shafts, heavy duty power supplies, etc. As with any electronic equipment, keep the unit from
excessive moisture, heat, vibration, metallic particles and freezing temperatures. Installation Procedure
Summary
Installation Procedure Summary
The TC1720 is designed for quick and easy installation. Before installing, however, make sure all DIP
switches are in the up ("Off") position and double-check the polarity at the DC power's terminal block
connector. The installation procedure is as follows:
1. Connect your DTE/DCE Device to the DB37 Connector:
Check the Pin Assignments on page 3
and verify your application's data rate. Shielded cable is recommended.
2. Connect the optic cables:
Connect the local unit's optic "TxA" to the remote unit's optic "RxA".
Connect the local unit's optic "RxA" to the remote unit's optic "TxA." (do the same for "TxB" and "RxB"
on Dual Optics Models).
3. Connect the power plug:
The plug can be connected into either power terminal "A" or "B" (check for
proper polarity). The unit is equipped with power redundancy. By plugging a second power supply to
the spare power terminal, power redundancy is enabled. Verify that the power "A" and/or "B" LED is
illuminated.
4. Turn "On" your device:
If your device is a DTE/DCE device, the "TxD" & "TxClk" LEDs on the local
unit should be illuminated, meaning the signal is being transmitted. On the remote unit, the "RxD" &
"RxClk" LEDs should be illuminated, meaning the signal is being received.
5. Check the "Rx-A" LEDs:
When a good optic signal is received, the "Rx-A" LED on the corresponding
unit should illuminate. (Check "Rx-B" LED when "Optic TxB" and "Optic RxB" are in use. Dual Optics
model only).
