ELLIPSE2 AHRS & INS
– Hardware Manual
ELLIPSE2HM.1.3
2. Mechanical and Electrical specifications
2.1. Mechanical specifications
All dimensions are expressed in millimeters using the International System of Units (SI) conventions.
2.1.1. Overview
The Ellipse enclosure is composed of two anodized aluminum parts, one for the cover and one for the base
plate. The device uses high quality alloys and connectors to offer a full IP-68 enclosure and a good
resistance to harsh environments.
The Ellipse-N and E versions include a sophisticated venting system maintain IP-68 protection while
allowing ambient pressure measurements to be performed.
The Ellipse connectors are high quality Ultimate Fischer connectors that offers IP-68 protection even
unconnected. The Ellipse-N version also includes a SMA connector to connect the GPS antenna. When used
with a waterproof GPS antenna cable, this connector offers an IP-68 protection.
Note 1: If you are planing to use Ellipse internal magnetometers, please make sure that you don't
use ferromagnetic materials to mount the device.
2.1.2. Specifications
The table below summarizes all mechanical and environmental specifications.
Item
Specification
Remarks
Size
A, E, N: 46 x 45 x 24 mm (1.8 x 1.77 x 0.9”)
D: 67 x 87 x 31.5 mm (2.64 x 3.43 x 1.24“)
Weight
A: 45 g / 0.1 lbs
N: 47 g / 0.1 lbs
E: 49 g / 0.1 lbs
D: 180g / 0.4 lbs
Shocks
< 2 000
g
Operating Vibrations
3g RMS – 20Hz to 2 kHz as per MIL-STD-810G (A2 ranges)
8g RMS – 20Hz to 2 kHz as per MIL-STD-810G (A3/A4 ranges)
Specified performance
Environmental Specifications
Enclosure
Anodized Aluminum
IP rating
IP-68 (1 hour at 2 meters)
Operating temperature
A, E, N:
D:
-40 to 85°C (-40 to 185°F)
-40 to 75°C (-40 to 167°F)
Storage
-40 to 85°C (-40 to 185°F)
Humidity
Sealed, no limit
MTBF (computed)
50,000 hours
Calibration interval
None required, maintenance free
17/50
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