Leica Geosystems GPS System 500 - Technical Reference Manual - Manual (Page 65)

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2. Set-up and Connection Technical Reference Manual-4.0.0en
1. Pillar Setup
2.15.2 Antenna Height components
VO=0
VR
MRP
VE 1 VE 2
VO Vertical Offset
VR Vertical Height Reading
VE1 Vertical Phase Center Eccentricity for L1.
VE2 Vertical Phase Center Eccentricity for L2
MRP Mechanical Reference Plane
Although an AT501/502 Antenna is shown, the same principles apply to the
AT504 and AT303.
The Vertical Height (VR) value is measured from the pillar benchmark to the
Mechanical Reference Plane of the Antenna. As there is no accessory avail-
able to measure the Vertical Height in this case, it is usually obtained through
levelling. Refer to the details on the next page for help in measuring the
Vertical Height.
The Vertical Offset is not required in this case and therefore is input as zero.
The Vertical Phase Center Eccentricities are stored in the Receiver for all
Leica System 500 Antennas and any non-Leica Antenna that you define. As
long as the correct antenna is chosen there is no need to enter any value into
the Receiver. These values do need to be calculated when a new type of
Antenna that does not exist in the Antenna Setup Records is used.