User Manual

16
2.10 CONTROL HEAD REAR PANEL
The rear panel of the CH-103 control head contains the interface connections
necessary between the radio and control unit. As shown in Figure 2-4, five
connection points are:
• POWER - The DC power connector accepts vehicle battery power to
power the unit and an ignition/accessory control sense input for on/off
control via the vehicles ignition switch/key.
• AUDIO – Provides connection to an external speaker.
• SERIAL – An serial port is provided to transfer data to and from a mobile
data terminal or PC. It is configured as a DTE device.
• CAN – The two 3-pin CAN connectors are used to connect the CH-103 (a
CAN device) to the M-803/V-TAC and to other control heads. These two
connectors are connected in parallel to allow daisy chaining of additional
control heads. A terminator (supplied) must be connected to the unused
CAN port of the last control head.
Figure 2-4: CH-103 Control Head Rear Panel