Crestron
C2N-CAMIDSPT
Camera Interface, Digital Servo Pan Tilt Head
Operations Guide - DOC. 6262A
Camera Interface, Digital Servo Pan Tilt Head: C2N-CAMIDSPT
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ZOOM POS, FOCUS POS, and IRIS POS analog input joins are not active. Iris
local/auto control is still selectable via digital input join.
Servomotor Lens Set to Position Mode
When a lens is put into position mode, the lens interprets the output voltages as a
command to go to a specific position. For example, 5.0V will send the zoom, focus,
or iris lens functions to the center of their ranges. An output of 7.5V would send the
lens to one extreme and 2.5V to the other. Once the lens reaches the specified
position, it stops moving. Positional information is inherent in position mode and
should be used when presets are required.
The CAMIDSPT implements an algorithm that makes commands at the ZOOM
RATE, FOCUS RATE, and IRIS RATE analog input joins move the lens in a
manner that is almost identical to the lens functions when operated in speed mode.
This allows the user to position the lens using a joystick or other control, but still
retain access to position information. Setting and recalling of presets does not
require switching between modes. For this reason, it is recommended that the
CAMIDSPT be operated in position mode at all times.
In position mode, the ZOOM POS, FOCUS POS, and IRIS POS analog input joins
are active and can be used to implement controller-based recalls.
Personality Modules
Plug-in personality modules define the lens configuration, with modules available
for 6, 8, and 12 V motorized lenses as well as 2.5V to 7.5V servomotor lenses. Once
installed, the lens output drive voltages are configured for a specific lens type. If no
personality module is installed, the lens output drivers will be disabled. The type of
personality module installed can be reported using the Crestron Viewport
F4
command.
NOTE: Most CCTV type lenses (6-, 8-, and 12-volt) do not have remote iris control;
they have automatic iris control only.
Preset Storing and Recalling
In conjunction with the Crestron control system, the CAMIDSPT is capable of
“memorizing” pan/tilt positions and focus/zoom settings for a virtually unlimited
number of presets. Each preset stores a specific position and setting. Presets are
supported for motorized lenses that provide zoom and focus positional feedback
voltages, and for servomotor lenses operating in position mode.
The speed or time taken when recalling presets is adjustable using the
PT_Spd/Time_Adj digital and the PT_Spd/Time analog input joins. A digital output
join, PresetInPos, will indicate when a preset has been reached.
The first 100 presets are stored locally in the pan/tilt unit and can be set or recalled
via digital joins. Additional presets can be created by having the control system poll
the pan/tilt unit for its current position and then storing these values in the control
system. The preset can then be recalled by sending the stored values to the PanPos,
TiltPos, ZoomPos, FocusPos, and IrisPos analog input joins.