Campbell RavenXTG GPRS/EDGE Uživatelský manuál stáhnout pdf (Strana 3)

Antennas

A choice of four antennas is o ered for the modems.

Contact an Applications Engineer for help in deter-

mining the best antenna for your application.

• 21831 0 dBd, ½ Wave Dipole Whip Antenna—

supports the 800 MHz band. It is intended for

locations that have strong cellular coverage.  is

antenna attaches directly to the modem’s SMA

connector and must reside in an environmen-

tal enclosure or building. It has an articulating

knuckle joint that can be oriented vertically or at

right angles.

• 18285 1 dBd, Omnidirectional Antenna—covers

both the 800 MHz and 1.9 GHz bands. It includes

a mounting bracket for attaching the antenna to a

crossarm, tripod, tower, or pole. Connection to the

modem requires an antenna cable (see right column).

• 20679 800 MHz/0 dBd and 1.9 GHz/3 dBd

Omnidirectional Antenna—includes a mounting

bracket for attaching the antenna to a crossarm,

tripod, tower, or pole. Connection to the modem

requires an antenna cable (see right column).

• 10530 9 dBd, Yagi Antenna—supports the

800 MHz band and is intended for sites near the

edge of the cellular coverage. It includes a bracket

for attachment to a mast or pole (outer diameter

of up to 1.5” (3.8 cm)). Some sites may require

the CM230 mount (see Adjustable Angle Mount-

ing Kit). Connection to the modem requires an

antenna cable (see right column).

Antenna Cables/Surge Suppressor

Typically, a 21847 or COAXSMA-L cable is used with

a 18285, 20679, or 10530 antenna. Both of these cables

have a type N male connector on the antenna end and

an SMA connector on the transceiver end.  ey di er

in their length:

• 21847 Antenna Cable with 12- Length

• COAXSMA-L Antenna Cable with User-speci ed

Length—enter cable length, in feet, a er the L.

Length should not exceed 20  (6 m).

Use the following when the modem is in an environ-

ment susceptible to lightning or electrostatic buildup:

• COAXNTN-L antenna cable with type N male to

type N male connectors (requires 19533)—specify

length, in feet, a er the L. Cable lengths longer

than 20  will weaken the signal strength.

• 19533 Antenna Surge Protector Kit—includes

one COAXSMA-L1.5 cable. A COAXNTN-L

cable is required (see above).

Adjustable Angle Mounting Kit

 e CM230 Adjustable Angle Mounting Kit allows

the 10530 Yagi antenna to be aimed at the service

provider’s antenna.

Enclosures and Mounting Bracket

An ENC12/14, ENC14/16, or ENC16/18 environ-

mental enclosure can house the modem, datalogger,

and power supply.  e modem is secured to the

enclosure’s backplate via the 14394 Mounting Bracket.

Base Station Requirements

• PC running PC400 or LoggerNet Datalogger

Support So ware.

• Access to the Internet.

Above are antennas used with the RavenXT-series digital

cellular modems. The 20679 antenna is not shown.

COAXNTN-L

Surge Suppressor

Installations that are susceptible to lightning should use the

COAXNTN cable and 19533 surge protector kit.

21831

18285

10530

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