Norsonic Nor265, User Manual

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Nor265 User Guide
8
Norsonic AS
3 Basic concepts
3.1 Definitions of angles – Home position
When the turntable is switched on, the actual position of the table is
set as the reference angle 0°. Rotational angles are defined relative to
this angle. Positive angles are counter-clockwise as seen from the top
of the table. The angles are given in degrees. A full turn corresponds
to 360°.
The reference angle may also be set to a hardware defined, fixed
angle, called the home position. The home position may be
automatically detected by performing a "Go Home" command, either
from the user interface or as a remote command. After the start of the
command, the table will turn 5 degrees clockwise and then counter-
clockwise until the home position is detected. When the home position
is detected, this position will be defined as 0°. A light emitting diode
(LED) marked
‘Home’ on the front indicates the status for the home
position. The LED will flash until the home position is detected, and
thereafter light continuously.
The range for angles is very wide and corresponds to more than 600
000 full rotations in both directions. The figure below shows the range
of angles for ± 360°, corresponding to two complete revolutions.
0
30
60
90
120
150
180
210
240
270
300
330
360
-30
-60
-90
-120
-150
-180
-210
-240
-270
-300
-330
-360