Campbell ET107, Product Manual

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ET107 Weather Station
47
FIGURE 5-39. Cellular modem mounted inside the ET107 (power
supply not shown)
1. Fasten the mounting bracket to the enclosure using the three pre-threaded
screws provided.
2. Thread the smaller SMA connector end of the enclosure antenna cable
underneath the battery cables and screw it to the antenna connector on the
cellular modem (FIGURE 5-39 ).
3. Attach the other end of the cable to the BNC RF bulkhead connector in the
lower right corner of the enclosure.
4. Make sure all connections are tight.
5. Use the null modem cable to connect the cellular modem’s serial port to
the ET107 RS-232 9-pin port (FIGURE 5-39 ).
6. Attach the power cable to the cellular modem.
7. Insert the red wire on the power cable into either the SW-12 or 12V
terminal on the ET107 (FIGURE 5-39 ).
8. Insert the black wire on the power cable into the ⏚ terminal on the ET107
(FIGURE 5-39 ).
Connection to the SW-12 terminal allows the ET107 to switch
power to the modem during scheduled transmission intervals, thus
conserving power. This connection is recommended for solar-
powered ET107 stations. Custom programming required.
NOTE
Ribbon Cable
12-in. Coaxial Cable