Campbell CM10 Manual de instalación descargar pdf (Pagina 32)

Section 3. Instrumentation Installation

12 34 56 78

1234

DIFF

EX1

HLHLL

12VG

DC ONLY

CAUTION

LUG

GROUND

POWER IN

WIRING PANEL

CR1000

PERIPHERAL PORT

RS-232 (Not Isolated)

SN:

CS I/O

MADE IN USA

109

15 1613

1412

DIFF

EX2

HLHLL

EX3

5678

SW-12

12V

COM1

Rx Tx Rx Tx Rx Tx Rx

COM2 COM3 COM4

POWER OUT

SDM

G 12V

Burial Phone Cable

Blue = Ring

Blue/White = Tip

Phone Line

Transient Protector

(Model 6362 or 2372-01)

SC12 Cable

Earth

Ground

FIGURE 3.3-2. COM220 Modem with Surge Protector

3.3.3 Cellular Transceivers

Campbell Scientific offers two digital cellular modems—the RavenXTV

CDMA modem and the RavenXTG GPRS modem. Refer to our product

brochure for information on choosing the right cellular modem for your

weather station.

Mount the digital cellular modem in the enclosure by doing the following

steps:

1. Mount the modem to the enclosure backplate using the hardware provided

in the #14394 Mounting Kit.

2. Connect the modem to the datalogger’s CS I/O port via the SC105 or

SC932A interface or connect the modem to the datalogger’s RS-232 port

via the #14392 Null Modem Cable.

3. Mount the cellular antenna on a grounded mast, positioning it to point

toward the nearest cellular tower, with the radiating elements oriented

vertically. Route the coaxial cable into the enclosure through the wiring

port and connect it to the cellular transceiver’s coaxial connector. Provide

strain relief for the cable on the left side of the enclosure with a cable tie

and tab.

3-8

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Campbell CM10 Manual de instalación Pagina 32

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