Balancing The Head - Vinten Vector 700H Operator's Manual

Balancing the head

NOTE: It is important that the pan bar(s) and all camera accessories (lens, zoom and
focus controls, viewfinder, prompter etc.) are fitted in their operational position
before balancing the head. Any equipment fitted or adjusted later will
unbalance the head.
Balancing the head consists of positioning the payload fore and aft on the head so that its C of G
is immediately above the platform pivot, then compensating for the payload C of G height using
the balance adjustment knob.
Position the payload fore and aft as follows:
Ensure that the centre lock is engaged
and all accessories are fitted.
Turn the tilt drag adjustment knob
WARNING! If the balance control is set to minimum, a heavy out-of-balance
Holding the pan bar to steady the platform, disengage the centre lock
platform).
Release the sliding plate clamp
the sliding plate fore and aft to achieve horizontal balance. The horizontal balance is correct
when no perceptible tilting force can be felt on the pan bar with the platform level. Apply the
sliding plate clamp (17).
If there is insufficient movement in the sliding plate to achieve balance, reposition the
wedge adaptor
dure.
When fore and aft balance has been achieved, carry out the payload C of G height adjustment as
follows:
Using the pan bar, tilt the platform forward and backward. When correctly balanced, there
should be no perceptible tilting force on the pan bar at any angle of tilt and the head should
remain in any tilt position to which it is set.
If the head tends to fall away when the platform is tilted, push in and turn the balance ad-
justment knob (14)
spring back to centre, push in and turn the balance adjustment knob
to decrease the C of G height setting.
NOTE: The balance adjustment knob is a multi-turn control. To enable the knob to be
turned more easily, slightly tilt the platform using the pan bar whilst turning the
knob.
When the payload C of G height adjustment is complete, check that the fore and aft balance
remains satisfactory. Re-adjust the position of the sliding plate if necessary.
(11)
payload will cause the platform to tip violently when the centre
lock is disengaged. Increase the C of G height setting (see
below) prior to balancing a heavy payload.
(17) and turn the sliding plate adjustment knob
(See Servicing), refit the load and repeat the horizontal balancing proce-
clockwise to increase the C of G height setting. If the head tends to
(See Locking the platform)
to its minimum setting.
and that the camera
(See Locking the
(13) to move
(14) counter-clockwise
11