M48A

The M48A is a half-duplex serial modem controller suitable for use with narrow band receivers, transmitters and transceivers. It supports a maximum transparent data throughput of 4800baud while baseband modulation frequencies do not exceed 3.2KHz The device supports (programmable) long startup/preamble durations sometimes required for synthesized narrow band devices.

Key Facts

Functionality	Modems
Data Rate	>10kbps, ≤10kbps, up to 40kbps, ≤64kbps
Data Rate	>10kbps, ≤10kbps, ≤64kbps, up to 40kbps
Country	Australia, Europe, Far East, North America, United Kingdom
Two way	Any, Yes

Features

Operating voltage (temperature): 5V for standard version (-40°C to +85°C)
Maximum usage of the range capability of an RF module
Compatible with fast or slow transmitter power up timing requirements
5kbps pulse duration coded protocol
Synchronisation codes and checksum to reduce false triggering on noise
Programmable transmit address and four receive addresses
Programmable timing parameters (preamble length, etc)
Programmable auxiliary serial output (to program radio modules)
Programmable serial modem baud rate (1200 - 76800 bps, half-duplex)
Suitable to be used with Narrow Band FM radio modules
Addressable point-to-point and point to multi point
Packet acknowledge/resend (ACK) mode
Store and forward repeater function

Applications

PDAs, organisers & laptops
Handheld / portable terminals
Remote operated vehicles
Data loggers
In-building environmental monitoring and control
Industrial (SCADA) telemetry and M2M systems
Fleet management, vehicle data acquisition

Key Facts

Features

Applications

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