BR Remote U4-J User manual

Heavier cameras can suffer from clutch ‘bounce’ at sudden stops because the tilt gears cannot be
‘back-driven’. Loosening the clutch will allow the clutch to absorb this and give smooth stops.
Sometimes the camera needs to be balnced slightly forward. Not too much!
Pan, Tilt, Zoom & Focus
Operating the unit is intuitive from any of our controllers. This section should be read in conjunction
with the appropriate controller instructions.
Pan & Tilt is the main function of the head and is controlled with the joystick in a fully progressive
manner. There are 10 electronic ‘gears’ for each axis which are adjusted by the controller. There
is also a ‘Turbo’ function which puts the head into the highest speed whilst this command is active.
The head then returns to the previous speed.
All control directions can be reversed using the ‘REVERSE’ functions on the controllers. This
cycles the control direction of each axis through the 4 possible configurations. These settings are
stored in the head even when the unit is powered off. This means that inverted and upright heads
can be used together on the same controller with the directions all working in the same way.
Zoom drift can be nulled via the Joystick Controller. See controller instructions.
Preset Positions
Up to 8preset positions can be stored and recalled. Each position includes, Pan, Tilt, Zoom and
Focus positions. These positions are absolute and saved during power off. They are not lost even
if the head is moved using the slipping clutches.
If the head does not reach the preset positio within 6-8 seconds it will time out and abort the move.
This can occur if an obstruction is met or the position is out of range.
A preset move can be aborted by operating the joystick or zoom rocker on the controller. Sending
another move will also abort the move and send it to the new postion.
Specifications
Weight: 3.4kg,
Capacity: 15kg
Dimensions: W 298mm, H 250mm, D 98mm
Power: 12 - 24v @ 0.25A (idle) + Camera requirement
Data: RS 485, twisted pair, 1000+ metres
BR Remote Ltd
Units 14 - 20 Setley Ridge Vineyard
Lymington Road
Brockenhurst
Hampshire, SO42 7UF
UK Tel: [phone] Web: www.br-remote.com
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U4_J
Operating Instructions
Contents
Introduction Page 2
Power & Data input Page 3
Hirose lens connectors Page 3
Camera connections Page 4
Camera PSU Page 4
Slip Ring Circuits Page 4
Mounting & Balancing Page 5
Radio Data Control Page 5
Pan Tilt Zoom & Focus Page 5
Preset Positions Page 6
Status Display Page 6
HDSDI Output Page 7
Specifications Page 7
Pinouts Page 8
The U4_Jis a remote head designd for medium sized cameras utilizing LANC protocols. It is
optimized for the JVC range of cameras and has additional LANC commands specitic to JVC
cameras.
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Power & Data Input
Inputs to the head are power and data. These are both input via the XLR4 input socket on the
base.
Power; 12 -18 volts, (24v max. For short periods)
<1A for the Head only, up to 3.5A for the head & camera.
IMPORTANT - Voltages greater than 5v on pins 2 or 3 will damage the data receivers. e.g..
phantom power. Take care when working with audio and intercom systems etc. not to plug the
wrong cable into the head.
Camera Power & Data Connectors
4pin XLR Supplies regulated 12v (3A) power to the camera. This is a 12v regulated supply for the
camera.
Video Circuits
The BNC connectors are simply connected together and provide a convenient way of acbling the
camera to the rotating base.
LANC jack socket
This is connected to the camera with the suppied cable.
Tilt Clutch Adjustment
The tilt clutch is in 2 parts; The larger diameter knob is the clutch and the smaller diameter knob is
the clutch lock. To loosen the clutch, first loosen the lock then loosen the clutch. The main reason
for loosening the clutch is to enable adjustment of the camera balance.
Do not overtighten the clutch. Its purpose is to prevent damage to the mechanics should the
camera be moved by an external force or be prevented from moving by an obstruction.
Fitting and balancing the Camera
It is important the camera is balanced in 2 planes. Fore/Aft and Up/Down.
Fit the camera slide plate using the 3/8” bolt through the centre of the saddle. Attach the camera
and all the cables required. Now slacken the tilt clutch and slide the camera so that it balances
perfectly front and back.
Now the 4 bolts securing the saddle to the drop arms are loosened and the saddle is adjusted for
perfect up and down balance. The camera should now stay in position wherever it is tilted and not
return to level.
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