LDT- R1 User Manual
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When mapping a lens, a methodical process needs to be adopted on both the remote
lens control side and on the LDT-R1 side. As standard practice, DCS suggests to
enter a mark point on the LDT-R1 for each engraved mark and let the LDT-R1
interpolate the rest of the data.
Ensure that the lens calibration happens without any motor slip. When moving the
lens axis with a remote handset, mark alignment should always be achieved from the
same direction to avoid slack on the lens.
In order to retain the full precision of the focus knob, we recommend turning off
F-Mapping during the creation of new lens tables.
Initial Check
Establish which direction will be used on the Preston HU3 and on the Single Channel
Handset (SCH) for the run of show (close focus, infinity, wide open iris, close iris,
wide zoom, tight zoom). DCS suggests keeping it consistent throughout the whole
set of lenses.
Do not move Preston Motors or change direction while encoding the lenses unless
required by rigging purpose.
As a general practice, when mapping a lens on the LDT-R1, always keep close focus
on the left, wide open iris on the left and wide zoom on the left. An example below.
Make sure to never change the F-Map on the Preston HU3 while mapping a lens on
the LDT-R1.
Note: Please check the motor direction on the LDT-R1 is on Normal before
proceeding.
Choose: Menu > Motor direction. More information regarding motor direction at
chapter ‘Chaining the Motor Direction’.
Mapping a Lens Table
Once all the lens information is entered, select either ‘Focus’, ‘Iris’ or ‘‘Zoom’ (if a
Zoom lens is being used) axis to start mapping the lens.
