C-Nav Hardware Reference Guide
50
IALA GPS System
IALA Receiver (MBX-3S, MBX-4)
Operational Specifications:
Operational SpecificationItem Specification
Frequency Range 283.5 - 325 kHz
Channels 2
Input Sensitivity 2.5 μV/m for 10 dB SNR
@ 100 bps MSK Rate
Acquisition Time < 1 Second Typical
MSK Bit Rate 100, 200, or Automatic
Frequency Selection Manual or Automatic
Frequency Offset ± 5 Hz
Dynamic Range 100 dB
Adjacent Channel Rejection 60 dB @ f0 ± 500 Hz
Decoding RTCM 6/8
Demodulation MSK
ial Interface Specifications
Item Specification
Interface Levels RS-232C and RS-422
Data Connector DB9 Socket
Data Port Baud Rate 2400, 4800, or 9600 Baud
Data Output Format RTCM SC-104, NMEA 0183
Data Input Protocol NMEA 0183
Power Specifications
Item Specification
Input Voltage 9-40 VDC
Input Current 210 mA @ 12 VDC
Power Consumption 2.5 W
Power Connector Circular 2-pin Locking Plug
Mechanical Characteristics
Item Specification
Display 2-line, 16-character LCD
Keypad 3-switch membrane
Enclosure Extruded Aluminum with Aluminum
Front and Back Plates.
Length 150 mm (5.9“)
Width 125 mm (4.9”)
Height 51 mm (2.0”)
Weight 0.64 kg (1.4 lb)
Antenna Connector BNC Socket
Optional Signal Output Connector TNC Socketnvironmentcifications
Storage Temperature -40°C to 80°C
Operating Temperature -30°C to 70°C
Humidity 95% Non-Condensing
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