VariZoom VZEFC - Manual (Page 3)

3
CONNECTION AND MANUAL OPERATION
Attach the motor bracket assembly to your lens, but leave the drive gear disengaged from the
focus ring. Connect the EFC control unit to the motor using the supplied extension cables, and
turn on the power by pressing the POWER button. The EFC control unit has three display
modes: ‘Volt’, ‘Mark’, and ‘Main’. The EFC must be set to ‘Main’ for operation. ‘Main’ is the
default mode when you turn on the power. Pushing the SCROLL button cycles you through
the three modes, but you want to be in ‘Main’ mode at this point.
Set the lens to “infinity” and turn the dial on the control unit so that the LCD reads “0” before
you engage the gear. You will notice that the individual arms of the motor bracket assembly
can be positioned by loosening the plastic tee-head screws. If your focus ring moves forward
when you turn it, position the gear so that it is near the front of the ridges on the focus ring. If
your lens has internal focus (i.e., the focus ring does not move forward), you can position the
gear in the in the middle of the focus ring. Once the gear has been mated to the focus ring,
you can turn the dial on the control unit to adjust the lens through the focal range (1300 to 0 on
the LCD readout).
If the motor does not turn the focus ring all the way, you can extend the range. The VZ-EFC
has a default range of 1300, but the range may be extended to 1740 or 1900. Press and hold
the SCROLL button while powering the unit. The display will show RANGE and either 1300,
1740, or 1900. Use the SCROLL button to select the desired range and press the SELECT
button to save.
The direction of movement for the motor can also be changed, if desired. “REVERSED” is the
default setting, and it is the setting that will work with the previously mentioned setup
instructions for the motor bracket. If you want to switch the motor direction, take that into
account when setting the up the motor bracket. To change the direction: Press and hold the
SELECT button while powering the unit. The display will show SIGNAL and either “Reversed”
or “Normal”. Use the SCROLL button to select the signal direction and press the SELECT
button to save. The “signal” and “range” configurations are saved in memory so you do not
have to set them each time you power the VZ-EFC.
The EFC’s default configuration is for “Reversed” signal direction and a range of 1300. To
reset these defaults, press and hold the SELECT and SCROLL buttons while powering the
unit. The display will show “Defaults Loaded” and then start normal operation.
PROGRAMMING FUNCTION
You can program up to 4 sequential focal marks. To program your marks, hit the SCROLL
button until you are in ‘Mark’ mode, and then hit the SELECT button. You will see “A” come
up, then turn the dial until you reach the desired focal point that you want to mark as “A”. Hit
the SELECT button to set the focal point. To mark “B”, hit SCROLL, adjust to the desired
position, and hit SELECT (and so on). However, you only need to program the number of
marks you desire. For example, if you only want to mark “A”, program it and hit SCROLL until
you reach “EXIT”, then hit SELECT (in this case, only mark “A” will show in the MAIN display
mode).