Vinten Radamec HS-2010MED Pan & Tilt Head - Manual (Page 57)

HS-2010MED Maintenance And Repair
User Manual 4-7
3. Adjust VR2, Zoom Centering so that the range of travel is centered within
the overall range from end stop to end stop as the controller joystick is
exercised.
4. Readjust VR1, Zoom Gain to increase the total travel so that the lens just
reaches both end stops. Trim VR2, Zoom Centering as necessary to ensure
that the travel is symmetrical.
Focus Calibration
1. Observe the focus element of the lens while using the controller Focus
Knob to run the focus from far to near.
2. If the lens is reaching the mechanical end stop at either end of travel, adjust
VR3, Focus Gain to reduce the total travel so that the lens does not reach
the end stop(s).
3. Adjust VR4, Focus Centering so that the range of travel is centered within
the overall range from end stop to end stop as the controller Focus Knob is
exercised.
4. Readjust VR3, Focus Gain to increase the total travel so that the lens just
reaches both end stops. Trim VR4, Focus Centering as necessary to ensure
that the travel is symmetrical.
Newer Board (marked 020087)
1. Make sure that the jumpers marked JP2 and JP3 are removed.
2. Power up the HS-2010MED head and allow it to initialize.
3. At the controller (ACP, HCP or LCP), select CONFIG, then ENGINEER-
ING SCREEN and type in the password MAINT.
4. Select REAL TIME STATUS and adjust the zoom and focus controls on
the control panel to set the demand voltages to 50.00.
5. Connect the negative lead of a digital voltmeter to the cathode (striped end)
of D2.
6. Connect the positive lead of the voltmeter to pin 22 of output connector J2.
Make a note of this lens reference voltage.
Zoom Calibration
7. Measure the voltage at jumper JP2. Adjust R21 (Zoom Center) so that the
voltage at JP2 is equal to the lens reference measured in step #6.
8. Monitor the voltage at JP2 and use the zoom control on the control panel to
run through the entire zoom range. Adjust R4 (Zoom Range) for full travel
of the lens.
9. Reset the zoom control for 50.00 in the Real Time Status screen. If neces-
sary, adjust R21 (Zoom Center) so that the voltage at JP2 is equal to the
lens reference measured in step #6.
10. Repeat step #8.