Navsight Solution
– Hardware Manual
NAVSIGHTHM.1.5
Mechanical alignment
For best measurement accuracy, a good mechanical alignment is required. During manufacturing, the
Apogee IMU frame has been carefully aligned to 0.02° with the base plate for roll, pitch and yaw angles.
To ease the yaw alignment (X axis), the base plate features two alignment holes Ø 4 mm H8 that
guarantees with two taper pins Ø 4 mm h7 a yaw alignment better than ±0.04°.
Origin of measurements
The Apogee IMU offers the possibility to output data at different measurement points.
The default center of measurement is located on top of Apogee enclosure, on the coordinate frame center
drawing. It is represented on the mechanical outlines by the symbol. This point is defined to simplify
installation.
Alternatively, user can select between two other center of measurement points:
●
Alignment hole (aligned to the bottom of the base plate)
●
Bare IMU center of measurement, represented by the symbol.
Specifications
The table below summarizes all mechanical and environmental specifications.
Electrical and Mechanical Specifications
Enclosure materials
Anodized Aluminum (6061)
Dimensions
5.8 x 10.0 x 13 cm
Weight
635 g
Input power voltage
12 – 36 V DC – isolated power supply
Power consumption
2.5 W typical.
Environmental specifications
IP rating
IP-68 (24 hours at 2 meters)
Humidity
Sealed, no limit
Operating Temperature
range
-20°C to 60°C – specified range
-40°C to 71°C – operating range
Storage Temperature range
-40°C to 85°C
Shocks
500 g for 0.3 ms
Operating Vibrations
1 g RMS – 20 Hz to 2 kHz as per MIL-STD-810G (A1 range)
8 g RMS – 20 Hz to 2 kHz as per MIL-STD-810G (A3 range)
MTBF
50 000 hours
Calibration interval
None required, maintenance free
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