TC1720
(Optional Dual Optics)
User's Manual
Rev. 1.4
-2-
Table of Contents
Chapter 1 - Overview ................................................................................................... 3
Description .......................................................................................................................................... 3
Electrical Specifications ................................................................................................................... 3
Virtual Pin Assignments and Theory of Operation ....................................................................... 3
LEDs, DIP Switches and Connectors .............................................................................................. 4
DIP Switch Functions ........................................................................................................................ 5
Front Panel Switches ........................................................................................................................ 5
SW1 Internal PCB Dip Switches ...................................................................................................... 5
RS-422/449 Termination Resistor ................................................................................................... 6
Optical Specifications ....................................................................................................................... 6
Optical Redundancy (optional) ........................................................................................................ 7
Dry Contact Alarm Relay ................................................................................................................... 7
Power Supply and Rear Panel ......................................................................................................... 7
Chapter 2 - Installation ................................................................................................ 8
Unpacking the Unit ............................................................................................................................ 8
Equipment Location .......................................................................................................................... 8
Installation Procedure Summary ..................................................................................................... 8
Typical Point to Point Application Diagram .................................................................................... 9
Chapter 3 - Troubleshooting ...................................................................................... 10
General ..............................................................................................................................................10
All LEDs are "Off" .............................................................................................................................10
Alarm LED .........................................................................................................................................10
Optic Cable Types ............................................................................................................................10
Calculating the Loss on the Fiber .................................................................................................10
RS-422/449 Cable Verification .......................................................................................................10
Important Warranty Note ................................................................................................................10
Optic Cable Verification ..................................................................................................................11
Chapter 4 - Bench Tests ............................................................................................ 12
General ..............................................................................................................................................12
Test Equipment Requirements ......................................................................................................12
Pre-Installation Tests .......................................................................................................................12
Local Electrical Loopback Test ......................................................................................................13
Local Optical Loopback Test ..........................................................................................................14
Remote Optical Loopback Test ......................................................................................................15
Remote Electrical Loopback Test ..................................................................................................16
Bench Test With Built-In Signal Generator ..................................................................................17
Chapter 5 - Component Placement ............................................................................ 18
Chapter 6 - Specifications .......................................................................................... 19
Appendix A ................................................................................................................ 20
Return Policy ....................................................................................................................................20
Warranty ............................................................................................................................................20
