LEA-4A u-blox, LEA-4A Datasheet - Page 5

• Manufacturer Part Number: LEA-4A
• Description: Antaris 4 Gps Modules? Data Sheet
• Manufacturer: u-blox

1.6 Antenna
The LEA-4x modules are designed for use with passive and active antennas. An antenna supervisor is provided
on all modules except the LEA-4M. If activated, the GPS receiver is capable of detecting short circuits to the
active antenna by checking the bias voltage level and can shut down the voltage bias immediately. A series
resistor is needed in front of the V_ANT input. UBX and NMEA messages are provided to report the condition
of the antenna supply. Open circuit detection can also be supported with an additional external circuit. For
details, please refer to the ANTARIS
Table 3: Antenna Specifications for all LEA-4 Modules
Table 4: Antenna Supervisor Specifications (feature not available with the LEA-4M)
LEA-4A, LEA-4H, LEA-4M, LEA-4P, LEA-4R, LEA-4S, LEA-4T - Data Sheet
GPS.G4-MS4-06143-1
Parameter
Antenna Type
Active Antenna
Recommendations
Parameter
Antenna Supply
Antenna Supervisor
Specification
Minimum gain
Maximum noise figure
Maximum gain
Specification
Short circuit detection
Open circuit detection
®
4 System Integration Manual [1].
Passive and active antenna
15 - 20 dB (to compensate signal loss in RF cable)
1.5 dB
50 dB
Using VCC_RF or external voltage source
Built-in
Enabled with external circuit
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