Motorola AT Commands G24-L Especificações descarregar pdf (Página 18)

3. GPS

3.1 GPS Antenna Requirements

The GPS module is not provided with an internal LNA amplifier. The use of an active antenna is

important to achieve a good performance. The module is provided of an Antenna supply circuit.

As suggested on the Product Description the external active antenna for a GPS device shall fulfill the

following requirements:

ANTENNA REQUIREMENTS

Frequency range 1575.42 MHz (GPS L1)

Bandwidth +- 1.023 MHz

Gain 1.5 dBi < Gain < 4.5 dBi

Impedance 50 ohm

Amplification Typical 25dB (max 27dB)

Supply voltage Must accept from 3 to 5 V DC

Current consumption Typical 20 mA (40 mA max)

Table 10: GPS Antenna requirements

4. Mechanical Characteristics

Weight 160g

Dimensions (max) L x W x H 98 mm x 82mm x 30mm

Temperature range -20°C to +70°C ambient temperature

Protection class IP40 Avoid exposing JAVA BOX Terminal to liquid or moisture

Mechanical vibrations Amplitude 7.5mm at 5-200Hz sinus

Air humidity 5% - 85%

Class of flammability UL94 HB

Casing material PC/ABS Cycoloy 1200 HF

Table 11: Mechanical characteristics

Figure 19: Mechanical measurements

Java Box Terminal Hardware Interface Description

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