Vinten Radamec HS-2010MED Pan & Tilt Head - Manual (Page 56)

HS-2010MED Maintenance And Repair
4-6 User Manual
Native Lens Board Calibration
The Native Lens Control Board allows use of the motors and feedback potenti-
ometers already provided in many servo controlled lenses and saves the cost and
complexity of adding outboard hardware. During the system installation, one of
these boards is mounted in each lens. A typical installation is shown below.
The board itself may look different than the illustration because two different
types of Native Lens Board are in use. The marking on the board (“Native Lens
Control” denotes the original board, or “020087” denotes the newer board) will
determine which calibration procedure you should use.
With HS-2010MED heads, zoom and focus handles are provided for manual
operation. A relay in the Native Lens Board switches between the AutoCam
zoom and focus control voltages and the control voltages from the pan bar con-
trols.
Original Board (marked Native Lens Control)
The board is normally factory set to allow the zoom and focus controls to oper-
ate over a limited range with virtually any lens. Setting these pots is an iterative
process due to the interaction of the adjustments.
Zoom Calibration
1. Observe the zoom element of the lens while using the controller joystick to
run the zoom from fully wide to fully tight.
2. If the lens is reaching the mechanical end stop at either end of travel, adjust
VR1, Zoom Gain to reduce the total travel so that the lens does not reach
the end stop(s).
Native Lens Board