Table of Contents
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1 Introduction
This manual explains the hardware aspects of Adcon's A733, A732, A731, and
A733GSM/GPRS remote telemetry units (hereafter referred to as A73x), including
installation issues and certain parameter configurations. The manual is divided as
follows:
1.1 About the A73x RTU family
The A731, A732, and A733 RTUs incorporate an A431 radio module operating in
the 430 to 470 MHz range, making it adaptable to most radio communication
regulations in the world. The output power is variable up to 0.5 W, while the
modulation is narrow-band FM (6.25, 12.5 or 25 kHz channel spacing). The
A733GSM/GPRS RTU incorporates a GSM module and uses the standard GSM
network for retrieving telemetry data (900/1800 MHz in Europe, 850/1900 MHz in
the US).
The A73x is a rugged RTU, complying with the IP65 ingress protection class
(NEMA 4). Depending on topography it ensures a reliable wireless connection to
other A73x RTUs, an A730MD or A730SD device, or an A840 Telemetry Gateway
over a distance of up to 20 km (12 miles). The A733GSM/GPRS has no such
limitations; however, your cellular service provider must cover the site where you
want to install the RTU. The A733GSM/GPRS operates in conjunction with the
A840 Telemetry Gateway only.
•
"Introduction," which gives some general information and document
conventions.
•
"Using the A73x RTU," which details the installation and use of the remote
telemetry unit.
•
"Performing Advanced Functions," which contains technical information for
the advanced user.
•
"Specifications," which describes operating parameters for the devices.
Introduction
7
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