ET107 Weather Station
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The splice and wire nut must be completely immersed into the
silicone gel inside the splice tube to be waterproof.
2.
Mount the surge protector box to a flat surface within 5 feet of the serial
port on the computer. Ground the center terminal to an earth (or building)
ground using the 14 AWG wire.
3.
Connect the 5-foot patch cable from the surge box to the Rad Modem.
Fasten the cable to the strain relief tab with a cable tie. Use the 9-to-25 pin
serial cable to connect the modem to the serial port on the computer.
4.
Route the user-supplied cable from the remote splice to the surge
protector. Connect it and the 5-foot patch cable to the surge protector.
5.6.4 Radio
Radios enable wireless communication between a datalogger and computer.
Maximum range is 0.5 to 13 miles. This is determined by radio model,
antennas used, line of site, and interference. This section provides instructions
for RF407, RF412, RF422, RF451 and most radios offered by Campbell
Scientific.
AC power is recommended when using radios with the station. A
10-watt solar panel can be used but days without sunlight and
winter months with little sunlight should be considered. The
ET107 station comes with a 7 amp-hour battery that is NOT
designed to handle deep discharge. Discharging the battery below
11 Vdc may require battery replacement. Below are some
examples of power calculations. Battery current consumption is
based on discharging the 7 amp-hour battery to 80% capacity
(5.6 amp-hours). Discharging the battery past this value could
result in damaging the battery.
5.6.4.1 Example Radio Configuration and Power Usage
Configuration of base radio at the computer:
•
Multi-Point Master
•
RS-232 @ 115,200 bps (Use 9600 bps baud rate for non Campbell
Scientific software if needed)
•
Network ID: 1234
•
Frequency Key: 5
•
1 Watt Output (Transmit Power: 10)
Weather station radio:
•
Multi-Point Slave
•
Communication with Datalogger via CS I/O SDC7
•
Network ID: 1234
•
Frequency Key: 5
•
1 Watt Output (Transmit Power: 10)
•
Low Power Mode: 2
See your spread spectrum radio manual for changing radio settings.
NOTE
NOTE