Multitech MTCBA-H3-EN3-P1 User's Guide download pdf (Page 12)

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.

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

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.

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.

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.

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