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di-GPS Products > di-GPS USB (M3L-SC)


Overview and Features

  • Built-in USB V1.1 interface (V2.0 compatible).
  • USB driver for Windows Vista, Windows XP and Windows 2000
  • Atmel ANTARIS (TM) 4 SuperSense chipset.
  • Ultra low power consumption, 40mA typical.
  • Very compact size 50mm x 32mm x 13mm.
  • Mounted on the flash accessory shoe or attached to the camera strap.
  • 16-Channel GPS Receiver for fast acquisition and reacquisition. 
  • Fast TTFF (Time To First Fix).
  • Very high sensitivity (Tracking Sensitivity: -158 dBm), provide superior positing information in environments, through urban canyons, and under dense foliage.
  • Built-in SBAS Demodulator, full WAAS and EGNOS support.
  • NMEA 0183 data protocol.
  • Built-in backup battery to reserve system data for rapid satellite acquisition.
  • Built-in patch antenna, no external antenna required.
  • *Support Canon EOS 40D, EOS 50D, EOS7D, EOS5D Mark II, EOS-1D Mark III, EOS-1Ds Mark III & EOS-1D MArk IV

*Canon WFT-E3 (II) / WFT-E2(II) required for direct GPS connection. di-GPS USB connect to EOS 40D/50D via WFT-E3(II), EOS 5D Mark II via WFT-E4, EOS-1D/Ds Mark III/IV via WFT-E2(II) and EOS 7D via WFT-E5


Chipset Atmel ANTARIS (TM) 4 SuperSense
Frequency L1, 1575.42 MHz
C/A code 1.023 MHz chip rate
Channels 16-channel all-in-view tracking

Cold Starts -142 dBm
Reacquisition -148 dBm
Tracking & Acquisition -158 dBm

Accuracy (Open Sky)
2.5 meters CEP
2.0 meters, CEP, WAAS/EGNOS enabled

Time 5us synchronized to GPS time


Acquisition Time (Open sky, stationary requirements)
Reacquisition <1 sec., average
Hot start 3.5 sec., average
Warm start 33 sec., average
Cold start 64 sec., average

Dynamic Conditions
Altitude 18,000 meters (60,000 feet) max
Velocity 515 meters /second (1000 knots) max

+5V Supply from USB port of WFT-E3/WFT-E2
Power consumption less than 40mA

Direct connect to C-DSLR via WFT-E3/WFT-E2 USB port
Baud rate 4,800 bps
Output message NMEA 0183

USB V1.1 (V2.0 compatible)

Physical Characteristics
Dimension 44mm*36mm*12mm
Weight: 30g
Operating Temperature -10  to +45 Degrees Celsius
Operating Humidity: 5% to 85%, No Condensing

*Specifications are subject to change without any notice.


User Guide 

di-GPS USB User Guide: di-GPS USB User Guide v1.00

USB Driver for Windows

USB Driver for Windows: Antarsi4_USB_Driver_V1.0-WinXP-2K-Vista.zip

di-GPS USB support Canon EOS 40D/50D, EOS7D, EOS5D Mark II, EOS-1D Mark III and EOS-1Ds Mark III/Mark IV. Canon WFT-E2/WFT-E3/WFT-E4/WFT-E5 required for GPS connection.

di-GPS is a registered trademark or a trademark of Dawn Technology Limited in the Hong Kong and/or other countries.
Nikon D2HS, D2X, D2XS, D3, D3S, D3X, D200, D300, D300S and D700 are registered trademark or a trademark of NIKON CORPORATION in the United States and/or other countries.
Fujifilm and S5Pro are registered trademark or a trademark of FUJIFILM CORPORATION in the United States and/or other countries.
Canon EOS 40D, EOS 50D, EOS 7D, EOS 5D Mark II and EOS-1D/Ds MarkIII/IV are registered trademark or a trademark of CANON INC. in the United States and/or other countries.
Products and brand names are trademarks or registered trademarks of their respective companies.
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