IridiTRAK Installation & User Manual
GPS, Iridium, Specifications
GPS Engine
Receiver Type
16channel - ANTARIS4 positioning
L1 frequency (1575.42MHz), C/A Code (Standard
Positioning Service), 8192 time / frequency search
windows.
Max Navigation Update Rate
4 Hz (default 1Hz)
Accuracy
Position
2.5m CEP
2
5.0 m SEP
3
Position DGPS /SBAS
1
2.0m CEP 3.0m SEP
Acquisition
4
Cold Start
34 s to 41s
Warm Start
33 s
Hot Start
<3.5 s
Re-acquisition
<1 s
Sensitivity
5
Tracking
-158 dBm
Acquisition & Reacquisition -148 dBm
Cold Starts
-142 dBm
Active Antenna
Recommendations
Minimum gain
15 - 20dB
(to compensate signal loss in RF cable)
Maximum noise figure
1.5 dB
Maximum gain
50 dB
Antenna Supply
3.3 Vdc
Antenna Connector
SMA Female socket – 50 ohms
Antenna Supervisor
Short circuit detection; reported to error log
Operational Limits
Altitude
18,000 m
Velocity
515 m/s
Iridium 9601 Transceiver Engine (RST430)
Frequency range
1616MHz to 1626.5MHz
Average Power
7W during a transmit slot (max)
Average Power
0.6 W during a frame (typical)
Receiver Sensitivity
-118.5 dBm at 50W (typical)
Receiver Spurious Rejection at
offsets > 1 MHz (typical)
60 dB
Duplexing method
TDD (Time Domain Duplex)
Oscillator stability:
±1.5ppm
Input/output impedance
50 Ohms
Multiplexing method:
TDMA/FDMA
Antenna VSWR
1.5:1 (50 ohms)
Antenna Connector
SMA Female socket – 50 ohms
SBD (Short-Burst Data)
Mobile Originated: 205 Bytes
Mobile Terminated: 135 Bytes
Minimum charge per transmission: 10 Bytes
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