Campbell COM320, Инструкция по эксплуатации

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COM320 Voice Communications Modem
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FIGURE 6-2. COM320 / CR1000 Using Surge Protection Device
(where there’s no available Standard RJ11 Connection)
6.2 Powering the COM320 Modem
The datalogger provides 12 Vdc on the CS I/O connector’s pin 8 for powering
peripherals such as the COM320.
6.3 Grounding the COM320 System
Connect the 14 AWG grounding wire (green with yellow stripe, provided with
the COM320) to the GND terminal on the COM320 and to the station
enclosure’s earth ground connection. The COM320 and datalogger must be
connected directly to a high quality earth ground. Read the datalogger manual
section on GROUNDING for details on creating such an earth ground.
A quality EARTH GROUND connection to the COM320
and datalogger maximizes protection against electro-
static discharge! Follow carefully the EARTH GROUND
scheme in FIGURE 6-3 . The COM320 employs spark
gaps on the phone lines; however, they will be
ineffective without quality earth grounding.
WARNING
14-AWG Ground Wire
(green with yellow stripe)