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Linear or Logarithmic taper joysck control
All joyscks are linear, meaning that each degree of movement of the sck correlates to the output. On
the 12 volt PROAIM PAN TILT HEAD half deecon of the joysck means approximately 6 volts sent to
the motors. But with the advent of Digital we can now control the taper of the joysck, making in
Logarithmic as well. Logarithmic taper being that the rst of joysck movement only sends a small
amount of power to the motors and the last of the deecon will send more power per degree of
deecon. On Logarithmic taper 1/3 of joysck deecon might yield 2 volts output the next 1/3 will
yield 4 volts output and the last 1/3 of yields 6 volts for a max. again of 12 volts. This mode gives
the operator ne slow movements yet retains the ability to go to max. speed if necessary.
POWER CONTROL
To the right and above the joystick is a knob labeled "SPEED".
This is the power control knob. Turning to the right will be full power and back to the left will decrease
the available power to both pan and tilt operation. The advantage of power control is to be able to limit
power when only slow accurate movements are needed. With the power control at half power
(approx. 8 volts max. output) the full range of motion on the joystick will be between 0 and 8 volts
making finer adjustments possible. The power control will be usable between a range of approximately
4 volts to 12 volts.
DEAD SPOT
The knob to the left is marked Dead Spot. Turned all the way to the left (counterclockwise) will create
the smallest dead spot. Meaning that the head will begin to move as soon as the smallest deflection of
the joystick is made. Moving to the right will increase the area where no power is sent to head motors.
At half way, the dead spot will close again, this helps to avoid crossing the tilt when only pan movement
is desired.
The dead spot is so tight when the control knob is all the way to the left, it may be necessary to back it
off slightly until no movement is seen in either axis.
NOTE: With the dead spot all the way left the head may move in both axis on it’s own. The dead spot
should be set at approx. the 9:00 position to insure that no unwanted movement occurs.
PAN DIRECTION SWITCH
When the Pan-Tilt Head is used on a Tripod or on a Jib.
When the head is shied from a Jib to a tripod, it needs reversal of direcon as the locaon of the head
will be inverted. By switching “on” the pan direcon switch, we can immediately reverse the direcon.
When the joysck is moved to the right it gives right rotaon as it gives while mounted on the tripod
directly.
Counterweights
The Jib is setup with “plate weights” or bar bells” style weights. Plate weights come in several weights
and diameters. They get smaller as the weights get lighter. The largest (25lbs) is about 11 inches in diam-
eter. The mounng hole is 1” in diameter for all weights. The jib has a varying weight rao depending on
the length you have chosen. The 24.5 arm itself balances at about 121.5 lbs. Just mulply the weight, of
the addional items you will put on the end of the arm, by 5 and you will know how much weight to buy.
Buy a few extras in case you add other accessories. The lighter weights will allow you to “ne tune” once
you’re ready to go.