Campbell Scientific RF400/RF410/RF415 Spread Spectrum Radio/Modem - Manual (Page 71)

Appendix J. Monitor CSAT3 via RF400 Series
J-3
(2) Remote station
(a) Connect 12 V power supply to RF400 (can be either 120V AC
adapter or 12V Field Power Cable)
(b) Connect 9 pin male to 9 pin male null-modem cable from
CSAT3 RS-232 connector to RF400’s RS-232 connector.
(c) You are ready to start taking measurements
TROUBLESHOOTING
(1) If your readings appear off-scale, try closing CSAT32 and running it
again.
(2) If not communicating with anemometer, make sure RS-232 driver is
turned on (see CSAT3 SETUP).