HARRIS CORPORATION M803M Manuel D’Utilisation

Controls and Indicators—CHAPTER 3

Software Version OTP 5.07

M-803 Operator Manual     23

Peripheral Interface

The M-803 supports a variety of interfaces with its
flexible interconnect. The rear panel provides power
supply connectors and interfaces for both analog and
digital peripherals.

RS-232 Port

The serial RS-232 port operates in asynchronous
ASCII mode for configuration and control and switches
to Serial Line Internet Protocol (SLIP) mode for data
communication between the fixed network and a
mobile computer or terminal device.

I/O Connector

The I/O connector provides interfaces for an external
10 Watt speaker.

CAN 2.0 Bus

The rear panel also provides access to an industry
standard Control Area Network (CAN) 2.0 Bus for
reconfigurability and peripheral support.

Through the CAN port the M-803 in either dash- or
trunk-mounted installations can connect to as many as
5 Control Head Units (CH-103) or other CAN
peripherals such as public address. A terminator is used
if no CAN devices are used. The maximum length of
the CAN bus is 40 meters.

Hardware Connections

While day-to-day operations are conducted from the
front panel controls, the rear panel connectors will be
useful during installation, troubleshooting and
hardware upgrades.