Vinten Vision 250E User manual

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Vision 250
E/IT

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Vision 250 E/IT
PAN AND TILT HEAD
3791/3792
MAINTENANCE MANUAL
AND
ILLUSTRATED PARTS LIST
PUBLICATION PART No. 3791-9
ISSUE 1
Copyright © Vinten Broadcast Limited 2003
All rights reserved throughout the world. No part of this document may be stored in a retrieval system,
transmitted, copied or reproduced in any way including, but not limited to, photocopy, photograph, magnetic or
other record without the prior agreement and permission in writing of Vinten Broadcast Limited.
Vinten, Vision and Quickfit are registered trademarks of Vinten Broadcast Limited.

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Foreword
This manual provides full and detailed maintenance and spare parts information for the Vinten®Vision®
250E/IT pan and tilt head
It is recommended that this manual is read carefully and the illustrations studied prior to operating or servicing
the pan and tilt head. Attention to the details contained herein will ensure that the pan and tilt head will
operate efficiently with the minimum of attention over a long service life. Particular attention must be paid to
cleaning, especially after use in adverse conditions.
To order spare parts or to obtain further information, application should be made to Vinten Broadcast Limited
or to your local distributor, or visit our website at www.vinten.com.
WARNING!: Read the Safety Section on page 5 before using this pan and tilt head or
attempting any adjustment or repair.
NOTE: Information contained in this document is subject to change.
Vinten Broadcast Ltd reserves the right, without notice, to make changes in equipment
design or performance as progress in engineering, manufacturing or technology may
warrant.

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Notes to readers
This is the on-line version of ‘Vision 250 E/IT Pan and Tilt Head Maintenance Manual’ (3791-9). Readers
should be aware that the pagination differs between on-line and printed versions.
Navigation
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Contents

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Safety - Read This First!
Warning symbols in this maintenance manual
Where there is a risk of personal injury, injury to others, or damage to the pan and tilt head
or associated equipment, comments appear, highlighted by the word WARNING! and
supported by the warning triangle symbol.
Critical data
Mass
Mass (complete with pan bar) 7.35 kg (16.2 lb)
Load
Typical payload 25 kg (55 lb)

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Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Notes to readers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Safety - Read This First! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Technical Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Design Improvements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Section 1 - Introduction and Description
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Vision 250 E/IT pan and tilt head. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
IT interface box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Section 2 - Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Installing the head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Mounting the camera. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Connecting the head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
250 E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
250 IT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Balancing the head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Locking the platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Pan and tilt brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Pan and tilt drag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Section 3 - Tools and Materials
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Special tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Consumable materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Section 4 - Servicing
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Routine checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Battery replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Brake knob adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Balance mechanism digital display calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

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Section 5 - Repair
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Disassembly
Encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Mechanism housing cover/right-hand side plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Balance mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Pan drag mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Pan brake. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Tilt drag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Tilt brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Electrical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Assembly
Electrical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Mechanism housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Tilt drag and tilt brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Pan brake. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Pan drag mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Balance mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Mechanism housing cover/right-hand side plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Final assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Section 6 - Illustrated Parts List
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Ordering spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Main assembly part numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

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Illustrations Page
Fig 1.1 Vision 250 E/IT pan and tilt head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Fig 1.2 IT Interface Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Fig 2.1 250IT Interconnections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Fig 2.3 Balance Graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Fig 4.1 Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Fig 4.2 Brake Knob Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Fig 4.3 Balance Mechanism Digital Display Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Fig 6.1 Vision 250E Pan and Tilt Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Fig 6.2 Vision 250 E Pan and Tilt Head - Main Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Fig 6.3 Vision 250 E Pan and Tilt Head - Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Fig 6.4 Vision 250 E Pan and Tilt Head - Balance Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Fig 6.5 Vision 250 E Pan and Tilt Head - Pan Drag and Pan Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Fig 6.6 Vision 250 E Pan and Tilt Head - Tilt Drag and Tilt Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Fig 6.7 Vision 250 E Pan and Tilt Head - Encoders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Fig 6.8 Vision 250 E Pan and Tilt Head - Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Fig 6.9 Vision 250 E Pan and Tilt Head - Pan Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Associated Publication
Vision 250 E/IT Pan and Tilt Head Operators Guide
Publication Part No. 3791-8

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Abbreviations
The following abbreviations are used in this publication:
ac alternating current
AAmps
AF across flats
A/R as required
ASME American Society of Mech Engineers
assy assembly
BS British Standard
BA British Association thread
BSF British Standard Fine thread
BSP British Standard Parallel Pipe thread
BSW British Standard Whitworth thread
btn button
chs cheese
C of G centre of gravity
comp compression
csk countersunk
cu cubic
c/w complete with
dc direct current
dia diameter
EFP electronic field production
ft foot
hd head
hex hexagon
Hz Hertz (frequency)
IC integrated circuit
ID inside diameter
in. inch
kg kilogram
lb pound (weight)
LF Lubricated Friction
LH left hand
MISO metric thread
mmetre
mm millimetre
NNewton
NPT National Pipe thread
NI not illustrated
No. number
OD outside diameter
PCB printed circuit board
PCD pitch circle diameter
pozi Pozidriv
psi pounds per square inch
pt point
PTFE Polytetrafluoroethylene
PVC Polyvinyl chloride
RH right hand
sect section
skt socket
SWG standard wire gauge
thk thick
UNC Unified Coarse thread
UNF Unified Fine thread
VVolts
WWatts

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Technical Specification
Weight (complete with pan bar) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.35 kg (16.2 lb)
Height to mounting face . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 mm (7.3 in.)
Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182 mm (7.2 in.)
Width. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291 mm (11.5 in.)
Load capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-33 kg (22-73 lb) - See balance graph
Tilt range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±90°
Pan range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .360°
Pedestal/tripod fixing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Four-hole/Quickfix flat base

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Design Improvements
Details
Serial No.
Information

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Section 1
Introduction and Description
Contents Para
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Introduction
1 The Vision 250 E/IT pan and tilt head is part of a range designed for broadcast professional, film,
corporate and educational use. It combines a manually-operated EFP-type pan and tilt head with electronic
encoders to provide precise real-time digital electronic positioning. In addition, the Vision 250 IT has a lens
encoder and IT interface box, to provide positional data to a virtual set computer
2 The Vision 250 E/IT is constructed largely in aluminium and magnesium alloys to produce a robust,
lightweight unit. The unique counterbalance system enables a wide variety of camera/lens combinations to be
maintained in perfect balance over the range of tilt movements. A maximum tilt angle of 90° is available at
intermediate loadings, whilst at higher loadings the range of tilt motion is progressively reduced. A graph is
provided in Section 2 which illustrates the relationship between load and centre-of-gravity (C of G) and may be
used to ascertain the suitability of the head for any given combination of camera, lens and accessories.
3 Drag is provided by the patented Vinten ‘thin film’ (TF) system which allows wide variation of the drag
setting on both pan and tilt axes to suit operator preference, and permits “whip” movements to be executed,
irrespective of drag setting. Pan and tilt axes are each provided with a brake.
Description
Vision 250 E/IT pan and tilt head
4 The Vision 250 E/IT pan and tilt head (Fig 1.1) embodies a spring counterbalance mechanism, TF drag
assemblies, brakes on the pan and tilt mechanisms and a camera mounting plate.
5 The balance system is easily adjusted by a knob (4) on the rear of the head. Maximum and minimum
payloads that can be balanced, and tilt ranges, are dependent on the weight of the camera and accessories
and on the centre-of-gravity (C of G) height. The control compensates for differing platform loads by varying
the compressive force on the counterbalance spring.
6 A digital display (8) indicates the setting of the balance mechanism on a scale of 00 - HI. The display is
illuminated by pressing the switch (9) and extinguishes automatically approximately 15 seconds after
adjustments are complete. The same switch also illuminates the level bubble (6) and the scales of the pan and
tilt drag knobs (19)(10). A sensor (6) automatically compensates for ambient light levels and dims the display.
If the ambient light level is high, the level bubble and drag knob scales will not be lit. The battery for the system
is housed in a compartment in the base of the head, closed by a cover (16).

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Fig 1.1 Vision 250 E/IT pan and tilt head
(1)
(2)
(3)
(4)
(5)(9) (7) (6)
(8)(10)
(11)
(12)
(13)
(15)
(16)(17)
(18)
(20)
(14)
(19)

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7 Both the pan and tilt mechanisms incorporate the Vinten thin film (TF) system to ensure smooth
movement of the camera about these axes and are fitted with control knobs (19)(10) to adjust the drag setting.
The whip-pan facility is unaffected by the pan drag setting. Both drag knobs are provided with scales
illuminated by the switch (9).
8 Friction brakes on each axis allow the head to be locked at any chosen position. The operating levers
for both brakes (14)(15) are fitted on the left-hand side of the head.
9 A centre lock (5) allows the head to be locked in the horizontal position.
10 A level bubble (6), illuminated by pressing the switch (9), is fitted to the rear of the head.
11 Pan bar mounting points are located at the rear of the head, on either side of the camera mounting
platform. A telescopic pan bar (2) is supplied and is attached using a pan bar clamp, with angular adjustment
available on the mount serrations. A second pan bar may be fitted.
12 The Vision 250 E/IT head is supplied with a flat base (17) and is designed for installation on a
compatible Vinten tripod or pedestal, using either the four mounting bolts and washers provided or by using a
`Quickfix' adaptor.
13 The camera is attached to the head by means of a slide plate (13). A clamp (1) is provided to hold the
slide plate in position and a lock (11) prevents its inadvertent removal from the head.
14 The Vision 250 E is fitted with encoders for pan and tilt, which provide high-resolution real-time digital
output of up to 696,666 counts for 360° of pan and 533,333 counts for 360° of tilt. This output is configurable.
15 The Vision 250 IT uses the same high-precision encoders, together with encoders for lens zoom and
focus. The data is fed into an encoder data capture board installed in an IT interface box, normally mounted
adjacent to the head, which provides positional data to a virtual set computer via a switchable RS-232 or RS-
422 port, making it compatible with most virtual studio systems currently in use.
Fig 1.2 IT Interface Box
(21)
(23)
(27)
(25)
(24)
(26)
(28)
(29)
(22)

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IT interface box
16 The IT interface box combines the output from the head encoders and the lens zoom and focus
encoders and provides positional data to a virtual set computer. It is connected to a virtual studio systems via
RS-232 (26) or RS-422 (27) connectors.
17 A pushbutton (23) provides a ‘RESET’ command to the virtual studio system for positional reference
purposes.
18 Mains power (100-120 Vac/200-240 Vac, 0.15A, 50-60 Hz) is supplied to the IT interface box via an IEC
connector (22).
19 A BNC connector on the IT interface box is for video synchronization (24) and is connected to the
composite ‘black’ output from the camera. An LED (25) adjacent to the connector shows red when out of
synchronization and green when synchronized.

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Section 2
Operation
Contents Para
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Mounting the camera . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Connecting the head. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Balancing the head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Locking the platform. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Pan and tilt brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Pan and tilt drag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
General
1 To identify components, please refer to Fig 1.1 and Fig 1.2. For further operating instructions, please
refer to Vision 250 E/IT Operators Guide, Publication Part No. 3791-8.
Installing the head
2 The Vision 250 E/IT head is supplied with a flat base and is designed for installation on a compatible
Vinten tripod or pedestal, using either the four mounting bolts and washers provided or by using a `Quickfix'
adaptor.
3 Adaptors are available which enable the heads to be installed on tripods or pedestals fitted with other
mountings. These are listed under ‘Optional Accessories’.
4 The head may be levelled with the aid of the level bubble (6) which is illuminated by pressing the switch
(9).The light will extinguish after 15 seconds.
NOTE: If the ambient light level is high, the level bubble will not be lit.

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Mounting the camera
5 Remove the slide plate (13) from the head by releasing the slide plate clamp (1), pressing the slide lock
release (11) and pulling the plate to the rear.
6 Attach the slide plate to the camera or camera mounting plate under the approximate centre of the
camera's weight using both camera mounting screws (12). Position the screws as far apart as possible.
7 Set the platform level and engage the centre lock (5).
8 Push the slide plate and camera into the platform from the rear, ensuring slide lock release (11) snaps
into position.
9
10
11
12
Fig 2.1 250IT Interconnections
AC IN
SYNCH
DATA OUT

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Connecting the head
250 E
13 The Vision 250 E is supplied with an unwired male 24-pin Fischer connector, which should be
configured to suit the installation. Encoder pin designations are listed in Table 2.1.
250 IT
14 The Vision 250 IT is connected to the IT interface box by a bifurcated cable, with a male 24-pin Fischer
connector for the pan and tilt encoders and a D-type connector for the lens encoders. Pin designations are
listed in Table 2.3.
15 The IT interface box is connected to the virtual studio system by either a RS-232 or RS-422 interfaces
using D-type connectors. Pin designations are listed in Table 2.2.
NOTE: Jumpers in the IT interface box must be set to suit either a RS-232 or RS-422 interface.
Table 2.1 250 E Encoder Pin Designations
Encoder
Connector
Encoder Wire
Colour
Connector Pin
No.
Encoder
Connector
Encoder Wire
Colour
Connector Pin
No.
Pan A1 Black 1Tilt A1 Black 13
Pan A2 Brown 2Tilt A2 Brown 14
Pan A3 Red 3Tilt A3 Red 15
Pan A4 Orange 4Tilt A4 Orange 16
Pan A5 Yellow 5Tilt A5 Yellow 17
Pan A6 Green 6Tilt A6 Green 18
Pan B1 Blue 7Tilt B1 Blue 19
Pan B2 Violet 8Tilt B2 Violet 29
Pan B3 Grey 9Tilt B3 Grey 21
Pan B4 White 10 Tilt B4 White 22
Pan B5 Pink 11 Tilt B5 Pink 23
Pan B6 Cyan 12 Tilt B6 Cyan 24
Table 2.2 250 IT RS Interface Connectors
RS-232 RS-422
Function Wire Colour Connector Pin
No.
Function Wire Colour Connector Pin
No.
TX Red 2TX- Brown 2
RX Orange 3RX- Black 3
Gnd Black 5TX+ Violet 7
RX+ Green 8

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Configuration
16 The encoders in the Vision 250 E/IT head should be configured using the software to which the head is
connected.
17 Jumpers in the IT interface box must be set to suit the type of RS interface. Proceed as follows:
17.1 Disconnect the mains power supply.
17.2 Remove the six screws securing the lid of the box.
17.3 Identify the jumpers (29) and set them in the positions indicated in Fig 2.2.
17.4 Replace the lid and secure with six screws.
Table 2.3 250 IT Encoder Cable Pin Designations
Encoder Connector
Pin No.
Wire
Colour
Function Wire
Colour
IT interface box
Connector
Pin No.
1Black/White Gnd Black/White 8
2White/Black +5 White/Black 7
5White/Green PB- White/Green 6
6White/Brown PA - White/Brown 4
7Black/White Gnd Black/White 8
8White/Black +5 White/Black 7
11 Green/White PB+ Green/White 5
12 Brown/White PA + Brown/White 3
13 Black/White Gnd Black/White 8
14 White/Black +5 White/Black 7
17 White/Grey TB- White/Grey 12
18 White/Orange TA - White/Orange 10
19 Black/White Gnd Black/White 8
20 White/Black +5 White/Black 7
23 Grey/White TA + Grey/White 11
24 Orange/White TB+ Orange/White 9
Pins 1, 7, 13 and 19 are jumped together
Pins 2, 8, 14 and 20 are jumped together
Lens Connector
Pin No.
1Red/White +5 Red/Orange 19
2Red/Black ZA+ Red/Green 15
3Green ZB+ Green/Red 17
5Red FA+ Red/Black 21
6Blue FB+ Black/Red 23
9Orange Gnd Orange/Red 20

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Balancing the head
18 Balancing the Vision 250 E/IT head achieves two objectives. Firstly, when a head is correctly balanced
the operator will need a minimum amount of even effort to move the head. Secondly, once balanced, the head
and its payload can be set to any tilt position and the head will maintain this position with ‘hands off’.
19 The graph (Fig 2.3) illustrates the relationship between load and centre-of-gravity (C of G) height and
may be used to ascertain the suitability of the head for any given combination of camera, lens and
accessories. The shaded area of the graph corresponds to those loads/C of G heights that can be balanced
over the full tilt range. The areas to the right indicate the progressively reducing tilt range over which the head
can balance higher loads.
20 Prior to balancing the head ensure that the pan bars and any ancillary equipment have been fitted and
the encoders connected in order to prevent upsetting the balance once it has been achieved.
21 Balance the head as follows:
Fig 2.2 IT Interface Box Configuration
NOTE: Be prepared to prevent the head falling away suddenly
RS-232 RS-422
(29)