Instruction manual
COM100 Cellular Phone Package
3
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S12 S
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PERMANENT DAMAGE TO RECHARGEABLE
CELLS MAY RESULT IF DISCHARGED
BELOW 10.5 VOLTS
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12
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PS12 BATTERY
EXTERNAL BATTERY - DO NOT USE WITH
INTERNAL RECHARGEABLE BATTERY
CHARGE VOLTAGE PRESENT
INPUT FROM CHARGER OR SOLAR PANEL
16-26 VDC OR AC RMS: POSITIVE TO
EITHER TERMINAL, NEGATIVE TO OTHER
POWER TO DATALOGGER OR
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Logan, Utah
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MADE IN USA
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CAMPBELL
SCIENTIFIC
INC.
COM200 MODEM
S/N
0002
MADE IN USA
GND
RING
TIP
Complies with Part 68, FCC rules. FCC Registration No. B9QUSA-75378-MM-T
Ringer Equivalence 0.6B. Required Connector USOC RJ11C. Canadian Load No.5
This equipment complies with the requirements in Part 15 of FCC Rules for Class A
computing device. Operation of this equipment in a residential area may cause
unacceptable interference to radio and TV reception requiring the operator to take
whatever steps are necessary to correct the interference.
FIGURE 1-1. Cellular Telecommunications
3. Antennas
Each transceiver in a cellular phone system must have an antenna. Two
common types of antennas are used, omnidirectional and directional. An
omnidirectional antenna transmits and receives in any direction. A directional
antenna transmits and receives in a particular direction.
Fixed sites are equipped with a directional antenna because it provides the
strongest signal and can be aimed at a cellular repeater site. There are various
shapes of directional antennas, the most common being Yagi antennas, such as
the ASP962.
Mobile applications use omnidirectional antennas. Generally, an
omnidirectional antenna is a spiraled, cylindrical rod, mounted vertically. The
omni antennas listed below differ mainly in mounting hardware.
YAGI ANTENNA (CSI Model 10530)
ASP962 Broadband Yagi
Gain: 8 dB
Frequency: 806-896 MHz
Bandwidth: 90 MHz
Input Impedance: 50 Ohms
Front to Back Ratio: 15 dB
VSWR Max: 1.5:1
Dimensions: 28.5" x 8.25" x 2.5"
Termination 50 Ohm N female
MOBILE OMNI ANTENNAS (Special Order)*
ASPD1894 Mini-UHF Magnetic Mount Antenna
Gain: 3 dB
Frequency: 826-896 MHz
Impedance: 50 ohms
Height: 15"
Phone Lines
Hayes-Compatible
Modem
Cellular
Provider’s
Communications
Tower
Computer Running
PC208 or PC208W
Software
Antenna not shown