LAI-2200C Specifications

LAI-2270C Control Unit:

  • Sensor Inputs: Two 6-pin connectors for LAI-2250 Optical Sensors. 2 BNC connectors for LI-COR Light Sensors.
  • Data Storage Capacity: 128 MB of FAT16 memory.
  • Keypad: 22 button tactile response keypad.
  • Display: 128x64 graphics display.
  • Communications:
    • USB (as mass storage device).
  • Global Positioning System (GPS RADIONOVA® RF Antenna Module):
    • Horizontal position accuracy: 2.5 m CEP (50% Circular Error Probability, Open-Sky, 24hr Static, good view of the sky).
    • Maximum position update rate: 1 Hz.
    • GPS receiver sensitivity, autonomous acquisition: -148dBm.
    • WAAS enabled receiver
    • Time to first fix (TTFF), hot start: 1 second.
    • TTFF, warm start: 6s (typical).
    • TTFF, cold start (with good view of the sky): 37 seconds at 90% probability.
  • Clock: Year, Month, Day, Hour, Minute. Accuracy of ±3 minutes per month.
  • Power Requirements: 4 "AA" alkaline, NiMH, lithium batteries.
  • Battery Life:
    • 90 hours based on 4 "AA" alkaline batteries without optical sensor attached and without GPS enabled.
    • 60 hours based on 4 "AA" alkaline batteries with optical sensor attached and without GPS enabled.
    • 40 hours based on 4 “AA” alkaline batteries without optical sensor attached and with GPS enabled.
  • Low Battery Warning: Display indicates when battery power is <15%.
  • Size: 20.9 x 9.8 x 3.5 cm (8.2" x 3.9" x 1.4").
  • Weight: 0.454 kg (1.0 lb) with batteries.

LAI-2250 Optical Sensor:

  • Sensor Inputs: One 6-pin Bulkhead connector for control unit interface.
  • Memory:
    • 1 MB flash memory for record storage.
    • 1 KB EEPROM for calibration and configuration storage.
  • Keypad: 2 button, tactile response keypad.
  • Clock: Year, Month, Day, Hour, Minute. ± 3 minutes per month. Can be synced with control unit clock when joined with a data cable.
  • Power Requirements: 2 "AA" (alkaline, NiMH, lithium) Batteries.
  • Battery Life: 180 hours of typical operation (based on 2 "AA" alkaline batteries).
  • Optics: 1.00° maximum decentering error as measured from center of mass of ring 4. 0.50° maximum magnification error as measured from the center of mass of ring 4.
  • Radiation Rejection:
  • > 99% from 490-650 nm.
  • > 99.9% above 650 nm.
  • Wavelength Range: 320-490 nm.
  • Nominal Angular Coverage:
    • Ring 1: 0.0-12.3°
    • Ring 2: 16.7-28.6°
    • Ring 3: 32.4-43.4°
    • Ring 4: 47.3-58.1°
    • Ring 5: 62.3-74.1°
  • Lens Coating: MgF2 for improved transmission at oblique angles (external and internal lenses).
  • View Caps: Provide azimuthal masking of view into quadrants of 10°, 45°, 90°, 180°, and 270°.
  • Diffuser Cap: Used to cover the lens when measuring sky radiation properties for scattering corrections.
  • Size: 63.8 L x 2.9 W x 2.9 D cm (25.1" x 1.125" x 1.125") (Endcap: 4.4 W x 5.1 D cm; 1.75" x 2.0").
  • Weight: 0.845 kg (1.86 lbs) with batteries.

Environmental Conditions:

  • Operating Temperature Range: -20 to 50° C.
  • Humidity Range: 0 to 95% RH (non-condensing conditions).
  • Storage: -40 to 65 °C.

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