15
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Pan bar attachment
7 Loosely attach the quadrant assembly to the head and turn the pan bar and the quadrant assembly to
achieve the required position. Tighten the clamp knob.
Operation checks
8 Release the pan and tilt brakes (12)(14) and exercise the head about both pan and tilt axes using
various drag settings.
9 Position the head with the platform horizontal and apply the pan (12) and tilt brakes (14). Without
applying great force, check that there is resistance to movement about the pan and tilt axes.
10 Release the slide plate lock (10). Check that the slide plate is free to move in the platform but will not
slide completely out of the rear end of the platform, and that it is securely held when the slide plate lock is
applied. Release the slide plate lock (10), push in the slide plate release (15) and check that the slide plate
can be withdrawn from the rear end of the platform.
11 Press the level bubble touchpad (5) and ensure that the lamp remains lit for approximately 15 seconds.
Replace the battery (See “Level bubble lamp battery installation and replacement” on page 23) if the
illumination is considered inadequate.
12 If the head is fitted with the optional Quickfit adaptor (1), push in the adaptor safety catch (16) and
move the adaptor wedge release knob (2) to the left against spring tension. Whilst holding the adaptor wedge
release knob in this position, lift the rear end of the adaptor wedge and withdraw it from the adaptor. Check
that the adaptor wedge release knob is retained in the release position. Position the front end of the adaptor
wedge in the adaptor and press down the rear end. Check that the adaptor wedge release knob returns to the
right and that the adaptor wedge is securely retained in the adaptor. Check also that the adaptor safety catch
knob returned to its normal position when the adaptor wedge release knob moved to the right.
Fitting a camera to the head
13 The load range for the Vision SD12 (i.e. the loads which can be fully counterbalanced) is defined by the
graph (Fig 2.1). Always check that equipment is within the design operating range for the head before
attempting to mount it.
14 Before attempting to balance a camera, ensure that all ancillary equipment (lens, zoom and focus
controls, prompter etc) has been fitted. It will be necessary to repeat the balancing procedure if these items
are fitted at a later stage. Changing the position or length of the pan bars may require adjustment of balance.
15 Cameras may be mounted directly on the slide plate or to an intermediate adaptor, such as the Vinten
Quickfit adaptor. The standard screw fixing is used to attach a camera to the sliding plate; intermediate
devices may be attached using either the two-screw fixing or four to six M4 screws. Cameras attached directly
to the sliding plate may be quickly removed from the head, together with the plate, by use of the slide release.
WARNING!: The pan and tilt brakes must be applied before any attempt is made to fit or
remove any equipment mounted on the head.
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