Chapter 1 - Overview; Description - TC Communications TC1540 User Manual

Description

The TC1540 Fiber Optic Modem interconnects a host controller with RTUs (Remote Terminal Units) with
RS-232, RS-422 or RS-485 (2 or 4-wire) interfaces for point-to-point communication. TC1540T is the
extended temperature version of TC1540. Asynchronous data rates up to 500 Kbps are supported (contact
factory for higher data rate requirements). The RS-422/485 interface is standard; RS-232 interfaces are
optional. Different interfaces can be interconnected.
The TC1540 is equipped with eight DIP switches and eight LED indicators (on the top cover) to facilitate
installation and troubleshooting.
Optic options include 850nm and 1310nm Multimode wavelengths; 1310nm or 1550nm Single Mode
wavelengths. The optional optic redundancy feature can provide maximum reliability for crucial applications.
Fiber optic connectors are ST; FC is optional (ST is a trademark of AT&T). The electrical connector is a
removable terminal blocks. Power is 9V to 12V DC at 250mA. Optional power sources are also available
(see Chapter 5 - Specifications).
LED Indicators
for Electrical & Optical
Input/Output Status
RS-232 input
terminal block
(only left pin is used)

Chapter 1 - Overview

DIP Switches for Diagnostics
TCCOMM.COM
ON(1)
RS232
SIG
IN OUT
GND
Signal Ground
RS-232 output
terminal block
(only left pin is used)
Figure 1. TC1540 with RS-232 Interface
and Application Setup
10-14VDC
18-36VDC
36-72VDC
DC Power Input
9V to 12V DC@250mA
- 3 -
TC1540D User's Manual
Rev. 1.2
Optic Transmitter "TxA"
Optic Receiver "RxA"