CHCNAV ALPHAUNI 900 USER MANUAL
| 2020-06
P a g e | 14
3.4.3
AT312 Antenna
The AT312 is a CHC designed versatile geodetic GNSS antenna which can meet multiple
requirements of any land surveying, construction, and engineering applications.
Signals tracking
GPS L1,2,5 GLONASS L1,2,3 BDS 1,2,3 Galileo
Dimensions
154mm*63mm (6.1in*2.5in)
Phase Center Accuracy
+/- 2mm
Working Temperature
-40
。
C to +85
。
C
Connector
TNC Female
Weight
450g
3.5
Multi-platforms Introduction
3.5.1
Airborne Platform
3.5.1.1
Airborne installation steps
▪
Push the slider of scanner into the quick-release clamp which on the bottom of the
airborne load plate in the direction of the arrow until hear a fix sound.
▪
Tighten the side screw bolts to make it stable and finally finished the installation.
3.5.1.2
Airborne disassemble steps
▪
Hold the bottom of scanner with left hand and turn the handle bolt on the side of the
quick release fixture counterclockwise with right hand until the threaded part of the
handle bolt disengages.
▪
Pull the handle bolt back to the maximum position with the right hand and keep it. The
left hand can translate the scanner to the head direction to complete the separation of
the scanner and quick-release module.
