The Fiberoptic Communications Specialists


Features:

• Plug-in optical modules for varying distances between modems up to 53 miles

• All EIA-232 handshake signals supported

• Conforms to all EIA-232 electrical specifications

• Vastly superior for noise immunity and electrical isolation

• Fiberoptic extension for MAS RTU radios such as Motorola DARCOMM (multiple access system)

• Four channel serial data communications modem
 
   
For electric utilities and other industries that operate point-to-point Supervisory Control and Data Acquisition (SCADA) and Programmable Logic Controller (PLC) systems, H&L Instruments developed the Model 532A Fiberoptic Modem/ Multiplexer. When your goal is to send reliable serial data communications, the Model 532A ensures strong, steady carrier signals.

Built with a full 25-pin connector, this modem provides companies with up to four isolated RS-232 channels for communication. It multiplexes all the signals in one direction into an encoded optical carrier to transmit the data. Multiplexing makes it possible for companies to send signals from up to four remote devices simultaneously by sharing a single pair of fibers. This allows the system to handle large amounts of data. Model 532A receives and transmits a modulated optical carrier signal on multimode or singlemode optical fiber. The presence or absence of the carrier signal allows users to quickly verify the integrity of the fiber cables.

The Fiberoptic Modem/Multiplexer is frequently used to link Remote Terminal Units (RTUs) or PLCs to radios or to act as a fiberoptic "extension cord" connecting remote devices to a SCADA master computer.

download data sheets (pdf)