Javad TRIUMPH-LS, User Manual

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Introduction
Internal Antenna Offsets
There may be scenarios where the actual height of the
top surface of the Rover or Base pole may not match its
height graduation readings. By subtracting the difference
between the actual height and the graduation reading and
entering them into the
Vertical Height Offset
field found in
the Antenna Height entry screens, you’ll be able to correct
the readings from graduated poles.
0.25’
0.1
6’
0.08
3’
This is a typical prism pole.
Notice the brass adjustment
threads are unscrewed so
that the center of his prism
corresponds with the pole
graduation.
The prism height here is 5.00’
and the graduation on his pole
is also reading 5.00’. The top
surface of the pole is less than
5.00’.
This is the TRIUMPH-LS on the
same prism pole. The brass
adjustment is unchanged,
however the prism nodal point
is not the same as the TRIUMPH-
LS ARP (even with the 25mm
adapter).
Here you can see that the
measured height is about 4.86
feet instead of the 5.00 feet the
pole is reading. Subtracting
actual height of 4.86’ from the
measured height of 5.00’ results
in antenna height offset of -0.14’
that is needed to correct the
graduation readings.