Horizon Fitness KRONOS100, Operation Manual

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2.4 Fix the receiver in the field
Steps of fixed receiver:
1.
You can mount a tripod on a selected point. Please make sure the surrounding meet
these conditions: avoid under shade and building, keep away from reflecting things and
electromagnetism interfering, etc.
2. Open the instrument case firstly; then take out plummet and the tribrach and mount on
the tripod, center and level the plummet & tribrach on the surveying point.
3. Take out receiver, fix it on the plummet & tribrach and lock it tightly.
2.5 How to measure antenna height
After fixed the instrument, user should measure antenna height at the beginning and the
end of every period of time to ensure the accuracy “mm” level. We usually measure from the
center point on the ground to the center waterproof loop of antenna. That is an inclined
height. Please refer to fig 2-5.
Fig2-5 Measuring antenna height
We use a formula to calculate antenna height.
H h R h
  
2
0
2
0
（
2-3
）
“h” is the inclined height that measure from point on the ground to the waterproof loop of
antenna.
R
0
is the radius of antenna.
h
0
is the distance from antenna phase center to the middle of antenna.
H is the calculation result. We usually measure antenna height twice and adopt the
average.
Attention: We input the inclined height as the antenna height, which is the inclined
distance from point on the ground to the waterproof loop of antenna.
2.6 Notice of using
KRONOS100
receiver
When you use KRONOS100 receiver, please pay attention to the following items.
1. You must operate according to this manual to ensure the required result. For example,
when you select surveying point, you should avoid shade, buildings, interfere fountain and so
on.
2. The receiver should not work under low power; otherwise, the data quality cannot be