Campbell Scientific TurfWeather Weather Station - Manual (Page 39)

TurfWeather Weather Station
4. On the computer end of the user-supplied cable, connect the wires as
described above to the SRM-5A short haul modem. The connector marked
+RCV should be connected to the wire in the user-supplied cable that
connects to the red wire on the 12002 cable and so on.
5. Connect the 15751 9 to 25 pin adapter to the SRM-5A short haul modem.
6. Connect the serial cable to the 15751 adapter.
7. Connect the other end of the serial cable to the computer.
a. 18 AWG is recommended for the user-supplied cable,
and must have at least 4 conductors plus shielding with a
bare wire. This bare wire and any unused conductors
should be connected to an earth ground on one end or the
other to help prevent electrical noise from interfering with
communication. Cable lengths exceeding 1/2 mile are not
recommended due to additional splices, and increased
probability of cable becoming damaged. Maximum of 2
miles.
b. The DCE/DTE switches on the SRM-5A short haul
modems are set to DCE for the computer, and DTE at the
weather station (inside enclosure). 9600 bps should be
used with weather software and PC200W settings.
FIGURE 5-16. Short haul enclosure mounted to the 16776 tripod
CAUTION
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