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HS RS-232
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60 MA CURRENT LOOP CONVERTER
2. Introduction
The HS RS-232
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60 ma Current Loop Converter lets an asynchronous
RS-232 device communicate with a 60-mA current-loop device. The
Converter requires no AC power or batteries to operate and supports data
rates to 115.2 kbps.
Operating full duplex, the Converter supports communication distances up
to 4 miles over two unconditioned 24 AWG twisted pair, depending on the
data speed. To guard against data loss due to ground loops, the Converter is
equipped with 2500 V RMS optical isolators.
The Converter connects directly to the RS-232 interface using a male or
female DB25 connector. Two-pair cable running to the 60-mA current-loop
device attaches to the Converter by an RJ-11 jack, RJ-45 jack, or terminal
blocks with built-in strain relief. An external DCE/DTE switch on the
Converter eliminates the need for a crossover cable on the RS-232 interface.
