Vinten Protouch PRO-6 HDV, Operator'S Manual

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17
Checking camera balance
The PRO-6
HDV
head provides a selectable balance range, set for payloads of 2.5kg (5.5lb) to 6kg
(13.2lb) at a centre of gravity (C of G) height of 5.5cm (2.2in.). The graph (Fig 5) shows the rela-
tionship between C of G height and payload for optimum performance.
The balance selector (8) allows four balance levels to be utilized. Level ‘0’ offers free rotation of
the tilt axis with no counter-balance engagement. Levels ‘1’ to ‘3’ offer gradually increasing bal-
ance capacity
(Fig 5) .
Check the camera balance as follows, remembering to ensure that the pan bar(s) and any ancil-
lary equipment have been fitted:
Reduce tilt drag (3) to level ‘1’.
Release the tilt brake (4) .
Position the camera correctly on the head by releasing the slide plate clamp (2) and sliding the
camera backwards or forward until it balances horizontally. Apply the slide plate clamp (2) .
Using the pan bar (9) , tilt the head backwards and forwards. If the head tends to fall away, select
a higher balance level (8) . If the head tends to spring back, select a lower balance level (8) .
NOTE: Be prepared to prevent the head falling away suddenly.
NOTE: When changed, the selected balance level (8) engages as the platform moves
through the horizontal position.