Product Manual

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8
Conversely, when it’s time to disconnect the Lemo plug,
please use the attached metal strap to pull the plug out.
• [10]: Battery compartment.
CAUTION - THE TRAPDOOR SHOULD BE REMOVED ONLY
FOR INSERTING OR REPLACING A BATTERY. THE REST
OF THE TIME, PLEASE ALWAYS KEEP FULLY CLOSE
.
• [11]: Mini-USB connector (standard USB 2.0, up to 12
MHz, OTG (host & device)).
• [12]: Shock absorber making up a robust protection belt
for the receiver against drops to the ground. The height
mark is nested in the shock absorber. See below.
• [13]: Height mark.
Phase Center
Location
See diagram below. These are relative measurements.
The field software usually calculates the real height of the
instrument, based on the location of the L1 phase center.
Whether you provide a vertical or slant measurement of the
antenna base (ARP), the field software you are using should
be able to deduce the real height of the instrument, using the
pre-loaded dimensional parameters (antenna radius, etc.)
specific to the model of GNSS antenna used.
In the case of a slant measurement, the software will also use
the radius of the antenna to determine the instrument height.
L1 68.7 mm
L2 65.3 mm