Campbell SC32B Bedienungsanleitung PDF herunterladen (Seite 6)

Telemetry Comparison Table

Device

Transmission

Distance or Area

Communication Rate

or Throughput

Current Drain @ 12 Vdc Service Requirements

NL100 Ethernet

Interface

Worldwide up to 115.2 kbps 130 mA Internet access

NL115/NL120

Ethernet Inter-

faces

Worldwide 115.2 kbps 20 mA (Ethernet only);

43 mA (Ethernet and

CompactFlash; NL115 only)

Internet access

NL200 Ethernet

Interface

Worldwide 115.2 kbps 50 mA active;

2 mA forced standby

Internet access

NL240 Wi-Fi

Interface

Worldwide RS-232: 1200 to 115.2k bps

CS I/O: 9600 to 460.8k bps

79.2 mA maximum;

1.3 mA sleep

Wi-Fi hotspot (access to stan-

dard 802.11b/g/n networks)

MD485 Multi-

drop Modem

4000 ft (can increase

distance by using more

MD485s or combining w/

spread spectrum radios,

Ethernet, or phone)

1200 bps, 9600 bps,

19.2 kbps, 38.4 kbps,

57.6 kbps, 115.2 kbps

1.2 mA standby;

2 to 7 mA communicating

CABLE2TP two-twisted pair

cable must be installed be-

tween networked dataloggers

and base.

RF320-Series

Narrowband

VHF/UHF Radios

with RF500M

modem

Up to 25 miles between sta-

tions (line-of-sight); eective

distance can be increased

using repeaters

1200 bps, 9600 bps,

19.2 kbps, 38.4 kbps,

57.6 kbps, 115.2 kbps

25 mA receive standby;

<900 mA (transmit 2 W

RF power)

<1200 mA (transmit 5 W

RF power)

FCC-assigned frequency and

license. Line-of-sight required.

RF401-Series and

RF430-Series

Spread Spectrum

Radios

Up to 10 miles when using

higher gain directional anten-

nas at ideal conditions; up to

one mile when using inexpen-

sive omnidirectional antennas

(line-of-sight obstructions

and interference will aect

transmission length)

up to 38.4 kbps <1 mA stand-by;

24 mA receiving (RF401, RF411);

36 mA receiving (RF416);

26 mA receiving (RF430, RF431);

40 mA receiving (RF432);

75 mA transmitting (RF401-series)

78 mA transmitting (RF430-series)

Shares frequency with

other devices such as cordless

phones. Spread spectrum

modems are not allowed to

cause harmful interference to

licensed radios. Line-of-sight is

required, and signal is attenu-

ated rapidly by foliage.

RF450 Spread

Spectrum Radio

Up to 60 miles assuming ide-

al conditions, line-of-sight,

and appropriate antenna;

realistic reliable distance is

~13 miles (antenna type,

line-of-sight obstructions,

and interference will aect

transmission length)

115.2 kbps <7 mA sleep mode;

<22 mA idle;

<76 mA receiving;

<500 mA transmitting

Shares frequency with

other devices such as cordless

phones. Spread spectrum

modems are not allowed to

cause harmful interference to

licensed radios. Line-of-sight

is required, and signal is at-

tenuated rapidly by foliage.

SRM-5A Short

Haul Modem

7.6 miles Up to 9600 bps 2.2 mA quiescent;

10 to 15 mA active

Dedicated two-twisted pair

cable connects one eld sta-

tion with base.

COM220 Phone

Modem

Limitless as long as phone

lines are installed

9600 bps, 38.4 kbps, 57.6 kbps,

or 115.2 kbps (in practice,

data trans-mission through

phone lines is generally

constrained to 33.6 kbps)

12 µA quiescent;

30 mA active

If not available at the site,

phone lines must be installed.

RavenXTV CDMA

Cellular Modem

Dependent on antenna used

and CDMA coverage

Up to 80 kbps 50 mA dormant;

120 mA receive/transmit

CDMA coverage at the datalog-

ger site and account at Verizon.

RavenXTG GPRS

Cellular Modem

Dependent on antenna used

and GPRS coverage

Up to 80 kbps 104 mA dormant

350 mA transmit/receive

GPRS coverage at the datalog-

ger site and account at AT&T.

TX320 High

Data Rate (HDR)

version 2 GOES

Satellite Trans-

ceiver

Western Hemisphere 100 bps, 300 bps, 1200 bps 0.5 mA idle; 15 mA during GPS

x, 2.6 A transmitting

Formal permission to use the

GOES system must be acquired

from NESDIS. Non-U. S. govern-

ment agencies and research

organizations must have a

sponsor from a U.S. govern-

ment agency.

ST-21 Argos

Satellite

Transceiver

Worldwide Latitude dependent. From

448 average bytes per day at

the equator to 1792 average

bytes per day at the poles.

1.1 mA

375 mA transmitting

To use the Argos system, you

must receive formal permission

from Service Argos and pay a

fee. The data must be used for

environmental purposes.

1 2 3 4 5 6 7 8

Kommentare zu diesen Handbüchern

Keine Kommentare

Campbell SC32B Bedienungsanleitung Seite 6

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Vernetzung Campbell SC32B