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A420

Converter, RS-232 Serial To 20mA Current Loop converter, 64 Kbps

ALFATRON A420

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Manufacturer:
ALFATRON ALFATRON
Manufacturer Part No:
A420
Order Code:
189870
Technical Datasheet:
A420   Datasheet
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Product Information

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RS-232 serial

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20mA Current Loop converter

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Technical Docs (1)

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CAD Models and drawings are provided to you on a revocable limited licence for your internal use only but remain the property of the manufacturer who retain all intellectual property rights and ownership. They are provided to assist you in decision making and as design guide but are not guaranteed to be error free, accurate or up to date and is not intended to be taken as advice.
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Product Overview

The A420 is a RS-232 To 20mA Current Loop Converter provides optical isolation and transient protection. The device is full duplex point-to-point communication using only 4 wires (one pair each for receive and transmit data). The device has optically isolated data lines and high speed data transfers, 19200bps over 400 metres and a maximum data rate of 64Kbps. The 20mA current loop breaks the ground loop at each end so the device is suitable for inter-building communications where different ground potentials can make RS-232 unreliable.
  • Uses Hewlett Packard opto-couplers for 20mA
  • Available as a pre-set, fully isolated pair (2500VAC for 1 minute)
  • Screw terminal connector on 20mA side
  • Current loop transmit and receive lines are switch selectable for ACTIVE and PASSIVE
  • Switchable DCE/DTE selection for RS-232 port
  • LED indicators for data activity
  • Can be used in multidrop environments
  • Optically coupled 20mA transmitter and receiver
  • Configurable RD and TD loops as Active or Passive
  • Reverse polarity protection
  • Standard DB25 used for RS-232 interface

Applications

Communications & Networking

Available for back order

More stock available to supplier lead times which is approximately 27/09/21

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$183.16 ( $201.48  Inc. GST)

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