Campbell Scientific COM310 Voice Communications Modem - Manual (Page 29)

COM310 Voice Communications Modem
FIGURE 3. COM310 / CR1000 Using Surge Protection Device
(where there’s no available Standard RJ11 Connection)
6.2 Powering the COM310 Modem
Newer Campbell Scientific dataloggers provide 12 VDC on CS I/O connector
pin 8 for powering peripherals such as the COM310. The alternative, if you
have a dataloggers/wiring panel lacking 12 VDC on pin 8, is to wire the green
connector on the side of the COM310 to the datalogger +12 VDC and power
ground terminals (refer to Figure 4). The COM310 comes with a mating green
power connector for this purpose. The following Campbell Scientific
dataloggers lack 12 VDC power on CS I/O pin 8.
TABLE 1. Dataloggers/Wiring Panels
Lacking 12 VDC on CS I/O Port Pin 8
CR10(X) w/ silver wiring panel
CR10(X) w/ black CR10 wiring panel (P/N 8032)
CR500 ⎯serial number 1764 or lower
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