User's Manual

14221-1200-4010, Rev. B

features a 12-key numeric keypad that provides Dual-Tone Multi-Frequency (DTMF) keypad

functionality and operator system/group selection control, three (3) preset buttons, and an

emergency/home button.

Shown in Figure 10-5 on page 58, the CH-721 System model control head has several connectors located

on its rear panel. These connectors include a DC power connector, two (2) CAN port connectors used for

CAN link interconnections, an external speaker connector, a 9-pin serial port connector for connecting

optional equipment such as a mobile data terminal, and a 25-pin multi-function accessory connector.

3.4 OPERATING POWER

The XG-100M Unity mobile radio with its companion XG-100LPA VHF Low Band Power Amplifier is

vehicle’s electrical system is used as the source of DC power. The Unity mobile radio and its companion

XG-100LPA are separately fused. For detailed specifications, see Section 2 of this manual which begins

on page 14.

The control head(s) connected to the radio is powered by the same DC power source, but fused separately

from the XG-100M and XG-100LPA. When the control head is powered-up by the operator, it “wakes

up” the MRU radio by transmitting data to the radio over the CAN link.

Harris recommends the buyer use only a Harris-authorized representative to install

and service this product. The warranties provided to the buyer under the terms of sale

shall be null and void if this product is installed or serviced improperly, and Harris shall

have no further obligation to the buyer for any damage caused to the product or to any

person or personal property.

3.5 RADIO PROGRAMMING

Radio Personality Manager Release R11A or later is required to program the XG-

100M/XG-100LPA radio for VHF Low Band transmit operation.

Unless otherwise stated, all radio installation and test procedures presented in this manual assume the

radio has been programmed by radio network administration personnel before it is delivered to radio

installation personnel. Programming instructions are beyond the scope of this manual.

The Radio Personality Manager (RPM) software application TQS3385 (part number SK-104768-001) is

used to program the XG-100M/XG-100LPA for VHF Low Band conventional operation. RPM can also

be used to flash program new operating software (i.e., firmware) into an XG-100M mobile radio. Refer to

the radio’s maintenance manual for additional information.

For additional RPM information, refer to its built-in online help and/or RPM Software Release Notes,

publication number MS-012550-001(TQS3385).

An XG-100M radio with a CH-100 control head can use a TIA/EIA/RS-232C serial cable connection, a

USB serial cable connection, or a Bluetooth wireless connection for programming operations. The

TIA/EIA/RS-232C serial cable connects to the 9-pin D-subminiature (DB-9) connector on the rear of the

radio. For USB and Bluetooth links, the CH-100 control head provides the connection path.

NOTE