11
Hardware Orientation
Power Supply Board
The power supply board provides a power switch and a power LED.
The power switch provides primary power to the CPU, RCB and accessory boards. The
12 VDC from the external power connector is routed to all boards in the card cage and is
not switched.
The power LED indicates that power is being supplied to the rest of the control system.
CPU Board
The CPU board provides a power LED, hardware resest switch, optional I/O connector
(DB25) and the male DB9 RS-232 serial connection to a PC used for computer-based
configuration and control.
To trigger a hardware reset, press the hardware reset button.
Radio Control Board (RCB)
The RCB board provides a power LED, a set of 6 channel status LEDs, a female DB15
auxiliary I/O connector and a female DB9 radio I/O connector.
The channel status LEDs indicate COR (active Rx signal present), PTT (transmitter
active), CTCSS/DCS decode, DTMF decode and two user programmable output bits.
The DB15 auxiliary connector provides many convenient functions including