Multi-Tech Systems MTCBA-G-F4 Benutzerhandbuch
Chapter 1 – Product Description and Specifications
Multi-Tech Systems, Inc. MultiModem GPRS Wireless Modem User Guide
8
RF Specifications
GSM 850
EGSM 900
GSM 1800
GSM 1900
Frequency RX
869 to 894 MHz
925 to 960 MHz
1805 to 1800 MHz
1930 to 1990 MHz
Frequency TX
824 to 849 MHz
880 to 915 MHz
1710 to 1785 MHz
1850 to 1910 MHz
RF Power Stand
2W at 12.5% duty
cycle
cycle
2W at 12.5% duty
cycle
cycle
1W at 12.5% duty
cycle
cycle
1W at 12.5% duty
cycle
cycle
Antenna Specifications
GSM/EGSM Antenna Requirements/Specifications
Frequency Range:
824 – 960 MHz / 1710 – 1990 MHz
Impedance: 50
Ohms
VSWR:
<2.0:1
Typical Radiated Gain:
3 dBi on azimuth plane
Radiation:
Omni
Polarization:
Vertical
Wave: Half
Wave
Dipole
Antennas Available from Multi-Tech Systems, Inc.
Description
Part
Number
Hinged Right Angle 900/1800 MHz Cellular Modem Antenna
ANF1-1HRA
Hinged Right Angle 800/1900 MHz Cellular Modem Antenna
ANF21HRA
Hinged Right Angle 850/900/1800/1900 MHz Cellular Modem Antenna ANQB-1HRA
PTCRB Requirements Note
There cannot be any alteration to the authorized antenna system. The antenna system must be the same type
with similar in-band and out-of-ban radiation patterns and maintain the same specifications.
with similar in-band and out-of-ban radiation patterns and maintain the same specifications.
FCC Requirements Note
The antenna gain, including cable loss, must not exceed 3.0 dBi at 1900 MHz / 1.6 dBi at 850 MHz for mobile
operating configurations and 7.0 dBi at 1900 MHz / 2.3 dBi at 850 MHz for fixed mounted operations, as defined
in 2.1091 and 1.1307 of the rules for satisfying RF exposure compliance.
operating configurations and 7.0 dBi at 1900 MHz / 2.3 dBi at 850 MHz for fixed mounted operations, as defined
in 2.1091 and 1.1307 of the rules for satisfying RF exposure compliance.
Interfaces
The Wireless MultiModem has several interfaces:
•
LED function indicating operating status
•
External antenna (via SMA connector)
•
Serial and control link (via 15 pins SUB D)
•
Power supply (via 2.5mm miniature power jack)
•
SIM card holder
LEDs
LED Indicators
TD
Transmit Data. Lit when modem is transmitting data.
RD
Receive Data. Lit when modem is receiving data.
CD
Carrier Detect. Lit when data connection has been established.
LS
Line Status.
Continuous “on” state indicates that the wireless modem is not registered on the network.
Flashing state indicates registration on network.
Flashing state indicates registration on network.
Off state. Modem is off (not ready) or in download mode.
TR
Terminal Ready. Commonly called “Data Terminal Ready.” This is a readiness signal from the PC.
PWR
Power. Indicates presence of DC power when lit.