Справочник Пользователя для Multi-Tech Systems MTCBA-H3-EN3
Chapter 1 – Introduction and Description
Multi-Tech Systems, Inc. MultiModem rCell User Guide
12
Power Draw
Multi-Tech Systems, Inc. recommends that you incorporate a 10% buffer into your power source when
determining product load.
determining product load.
Input Voltage= 5.0Volts
Idle Mode
Typical
Maximum
Peak Tx
Peak Rst
(Inrush
Current)
GSM850
Current(AMPS)
0.345
0.450
1.20
3.60
Watts
1.76
2.29
5.94
HSDPA
Current(AMPS)
0.345
0.760
1.01
1.40
Watts
1.76
3.84
5.03
Inrush Current (AMPS) (approx. 3ms duration)
2.66
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 at
12.5% duty cycle
12.5% duty cycle
2W
2W
1W
1W
Antenna System for Cellular Devices
The cellular/wireless performance is completely dependent on the implementation and antenna design. The
integration of the antenna system into the product is a critical part of the design process; therefore, it is essential
to consider it early so the performance is not compromised. If changes are made to the certified antenna system
of the MultiModem, then recertification will be required by specific network carriers such as Sprint. The Antenna
System is defined as the UFL connection point from the MultiModem to the specified cable specifications and
specified antenna specifications.
integration of the antenna system into the product is a critical part of the design process; therefore, it is essential
to consider it early so the performance is not compromised. If changes are made to the certified antenna system
of the MultiModem, then recertification will be required by specific network carriers such as Sprint. The Antenna
System is defined as the UFL connection point from the MultiModem to the specified cable specifications and
specified antenna specifications.
PTCRB Requirements for the Antenna
There cannot be any alteration to the authorized antenna system. The antenna system must maintain the same
specifications. The antenna must be the same type, with similar in-band and out-of-band radiation patterns.
specifications. The antenna must be the same type, with similar in-band and out-of-band radiation patterns.
FCC Requirements for the Antenna
The antenna gain, including cable loss, for the radio you are incorporating into your product design must not
exceed the requirements at 850 MHz and 1900 MHz as specified by the FCC grant for mobile operations and fixed
mounted operations as defined in 2.1091 and 1.1307 of the FCC rules for satisfying RF exposure compliance. The
antenna used for transmitting must be installed to provide a separation distance of at least 20cm from all persons
and must not transmit simultaneously with any other antenna transmitters. User and installers must be provided
with antenna installation instructions and transmitter operating conditions to satisfying RF exposure compliance.
exceed the requirements at 850 MHz and 1900 MHz as specified by the FCC grant for mobile operations and fixed
mounted operations as defined in 2.1091 and 1.1307 of the FCC rules for satisfying RF exposure compliance. The
antenna used for transmitting must be installed to provide a separation distance of at least 20cm from all persons
and must not transmit simultaneously with any other antenna transmitters. User and installers must be provided
with antenna installation instructions and transmitter operating conditions to satisfying RF exposure compliance.