Operation Zenith15/25 Pro | 15
4 Operation
4.1 Guidelines for Correct Results with GNSS Surveys
Undisturbed satellite
signal reception
Successful GNSS surveys require undisturbed satellite signal reception, especially at the instrument which
serves as a base. Set up the instrument in locations which are free of obstructions such as trees, buildings
or mountains.
Steady instrument for
static surveys
For static surveys, the instrument must be kept perfectly steady throughout the whole occupation of a
point. Place the instrument on a tripod or pillar.
Centred and levelled
instrument
Centre and level the instrument precisely over the marker.
4.1.1 Equipment Setup
4.1.2 Setting up as a Real-Time Base
Use The following equipment setup is used for real-time base stations. Raw observation data can also be
collected for post-processing.
Equipment setup -
Zenith15/25 Pro
Equipment setup step-
by-step
a) Zenith15/25 Pro instrument
b) ZBA201 battery
c) ZCA100 carrier
d) Getac handheld
e) Tribrach
f) Tripod
g) UHF antenna
h) ZAR200 antenna arm
i) ZDC202 antenna cable
j) ZPC200 pole
004577_002
a
b
c
d
e
f
j
i
h
g
Step Description
1. Set up the tripod.
2. Mount the tribrach on the tripod.
3. Ensure that the tribrach is over the marker.
4. Mount and level the carrier on the tribrach.
5. Insert the battery into the instrument.
6. Connect the UHF antenna to the instrument using the ZAR200 arm and the ZDC202 cable.
7. Press the ON/OFF button on the instrument for 2 s to switch on the instrument.
8. Screw the instrument onto the carrier.
9. Check that the tribrach and carrier are still level.
10. Connect the handheld to the instrument through Bluetooth.
11. Measure the instrument height using the measuring tape. Refer to "2.6 The Mechanical Refer-
ence Plane, MRP" for information on the instrument height.
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