Campbell Redwing 100 Manual de Instruções descarregar pdf (Página 9)

Redwing Digital Cellular Modem

Model PS12LA BP12 BP24

Charging Source/

Notes 1 1,2 1,2,3

Battery 7 Ahr 12 Ahr 24 Ahr

Approximate

Operating days 4715

1. 10 watt solar panel recommended as charging source in

remote applications, model MSX10

2. 12VDC regulator, model CH12R

3. Larger enclosure required, model ENC 16/18

To preserve battery life in solar powered systems, the battery Amp-hour

capacity used to calculate reserve capacity should be multiplied by 0.5 (i.e., the

net result is to cut the number of days listed above in half.) A ten day reserve

battery capacity is recommended. To get to a ten day reserve capacity, reduce

the amount of time that the modem is powered with the above batteries or get a

larger capacity battery. Note that in the power budget calculated above, the

majority of the power is consumed by keeping the modem powered even

though it is not being used. Powering it only half as long would essentially cut

the power requirements in half (program examples, section 6).

A user-supplied “RV” or “marine” deep cycle battery is an economical battery

with a larger capacity (60 – 100 Amp hours). Such a battery can be charged

with the MSX20R solar panel and housed outside the enclosure.

5. Installation

5.1 Datalogger Site Equipment

• Redwing Modem and power cable.

• Datalogger—CR510, CR10(X), CR23X, CR7, or CR5000.

• SC932 or SC932A Interface—converts the modem’s RS-232 port to the

datalogger's CS I/O port. The 10871 9-to-25-pin adapter is required to

connect the Redwing to an SC932 Interface. The adapter is not necessary

for the SC932A. Alternatively when using a CR23X or CR5000, a 14393

Null Modem Cable can be used to connect the modem to the datalogger’s

RS-232 port instead of the CS I/O port.

• 14394 Redwing Mounting Kit w/ Adapter—includes mounting hardware

for securing the modem to an environmental enclosure and the SC12

cable.

• Antenna—the following antennas can be purchased from Campbell

Scientific; sites near the edge of the CDPD coverage require the Yagi

antenna. Contact an Applications Engineer for help in determining the

best antenna for your application.

NOTES:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

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Campbell Redwing 100 Manual de Instruções Página 9