User manual

AGM Spread Spectrum Radio Manual
7
Hardware Installation
Power Connection
The SSR will operate from either a 12 VDC or 24 VDC supply that is capable of supplying
300 mA. Connect the minus lead of your power supply to pin 2 of the green connector and
the positive lead to pin 4 of the green connector.
When power is applied the “P/X” light should be on. The “F” light indicates the supply voltage
is too low or a failure of the SSR. If neither lights are on or if the “F” light is on check your
input voltage. The SSR requires a minimum of 11 volts for operation.
Connecting to a Personal Computer
Use the following procedure to connect the SSR to your computer for either configuration
changes or use.
You will need straight through cable to connect to the SSR. This cable should have a 9 or 25
pin female connector on one end to match the connector on you computer and a 9 pin male
connector on the other end to mate with the SSR. Cables, adapters and gender changers
designed for connecting a computer to a modem are available through many computer,
electronic or office supply stores.
The SSR also supports RS232 using only 3 wires, Transmit, Receive and Ground. Typically
3 wire RS232 is only used with custom cables to reduce the wiring cost. If using 3 wire
RS232 you will need to install a jumper between pins 3 and 5 on the green connector.
1. Plug one end of the RS232 cable into an available RS232 communications port your
PC. This port is normally a 9 pin male D connector; however it may also be a 25 pin D
connector in some cases. Consult with your PC documentation for the location of this
connector.
2. Plug the other end of the RS232 cable from your PC into the 9 pin female D
connectors on the top of the SSR.
3. Start Hyperterminal or other terminal emulator program. Select direct connect to the
serial port connected to the SSR. Unless configured for another baud rate or data
format select 9600 bps (baud), 8 data bits, no parity, and 1 stop bit. If connecting for
configuration, turn off all handshaking.
4. If properly connected the “2” light on the SSR will be on. If not on check your cable
connections and RS232 port on your computer. If using 3 wire RS232 you will need to
add a jumper between pins 3 and 5 on the green connector before the”2” light will turn
on.
NOTE: The SSR automatically switches to RS232 mode when a RS232 cable is
plugged in and the DTR line is active. RS232 mode overrides RS485
mode, if connecting to configure a SSR for RS485 operation you will need
to disconnect your RS232 cable before the SSR can communicate over
RS485.