Campbell Scientific RF401-series and RF430-series Spread Spectrum Data Radios/Modems - Manual (Page 100)

Appendix I. Phone to RF401 Series
4. COM220 Dip Switches
Dip Switch Position
1 Open
2 Open
3 Open
4 Open
5 Open
6 Open
7 Open
8 Open
Refer to the COM220 manual for more information about the
COM220 Dip Switches.
5. HARDWARE
After configuring LoggerNet and the RF401s you are ready to set up
hardware. The A100 null-modem connectors (it’s not important which
connector goes to which unit) connect via SC12 cables to the COM220
and the base RF401 CS I/O port. Connect the site phone line to COM200.
Connect power to the PS100. Connect antenna to RF401. When you turn
on the PS100 supply, the RF401 receives 12V power and you will see the
LEDs light in their power-up sequence.
Remote RF401s normally connect to datalogger CS I/O ports via SC12
cables. Powering up the datalogger will start the RF401 operating. Install
an antenna (or antenna cable and yagi or collinear) and you are ready to
collect data.
NOTE
I-10