75
The purpose of the pins (by name) is:
FG – FRAME GROUND: This pin is attached to the chassis of the equipment as a safety ground.
TXD – TRANSMIT DATA; This line carries the data from your computer to the KAM Plus.
RXD – RECEIVE DATA: This line carries the data from the KAM Plus to your computer.
RTS – READY TO SEND: The KAM plus checks this line to see if it is permitted to send data to
your computer. This pin is controlled by your computer software program to provide this infor-
mation to the KAM Plus. This pin is used for hardware flow control.
CTS – CLEAR TO SEND: The KAM Plus uses this line to signal your computer when it can no
longer accept any data from the computer, or to signal that it is again ready to accept data.
This pin is used for hardware flow control.
DSR – DATA SET READY: The KAM Plus applies a positive voltage on this pin when it is turned
on. This may be required by some computer software to detect the presence of a modem.
DCD – DATA CARRIER DETECT: The KAM Plus uses this pin to signal the status of the current
I/O stream to your computer. If you are currently connected to another PACKET station, this
line will have a positive voltage on it. If you are disconnected, the voltage on this line will be
negative.
DTR – DATA TERMINAL READY: This line is connected to the DSR line inside the KAM Plus and
is not used by the KAM Plus for any purpose.
Software settings
When using a standard terminal program to communicate with the KAM Plus, we recommend you
set the serial port configuration in your program for 8 data bits, no parity, and one stop bit. The
baud rates supported by the KAM Plus are 300, 600, 1200, 1800, 2400, 4800 and 9600. In gener-
al, you should use the fastest baud rate your terminal program supports (up to 9600). The KAM
Plus defaults with ECHO ON, so you should set your terminal program for "full-duplex" Operation.
If you are using a host-mode program like Host Master, there is no serial port configuration for da-
ta bits and stop bits - this is automatically set by the program. You must specify the COM port and
the baud rate to be used.
Connecting to your Radios
VHF
The VHF radio connector on the KAM Plus rear panel is a 9-pin DB style connector with a pre-wired
9 conductor cable and a mini-plug attached. The cable wiring is:
Pin Number Pin name Color Function
1
2
3
4
5
6
7
8
9
AFSK
XCD
PTT
RCV
RCV
GND
+12V
GND
GND
white
yellow
brown
blue
mini-plug center
shield
red
green
black
Transmit audio
External carrier detect
Push-to-Talk
Receive audio
Receive audio
Ground
Ground
Ground
To Next Page
Loading...
