Vernier Motion Encoder System - Manual (Page 3)

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Photogate Bracket
Photogate Brackets are attached to
the side of the track. With the nut
loosely on the T-handled bolt, slide
the nut into the side channel of the
track. Attach the photogate using the
supplied wing bolt in the long slot.
Adjust the gate height so the beam
intercepts the desired portion of the
target.
Motion Detector Bracket
Although we expect that the motion encoder will be used most often to record
motion data, it is also possible to use an ultrasonic Motion Detector.
Any Vernier Motion Detector with a hinged head can be attached to the supplied
Motion Detector Bracket. The Motion
Detector Bracket has a pin to locate
the Motion Detector on the bracket.
There is a knob, nut, and bolt to
attach the bracket to the track
underside, and a threaded hole at the
end near the pin. To assemble, place
the Motion Detector with the back
end over the pin of the bracket. Insert
the screw through the slot into the
threaded insert on the detector with
the hinge toward the track, and tighten. Insert the bracket into the slot in the
underside of the track as shown in the photo. When the Motion Detector is not
attached to the bracket, its mounting screw can be stored in the threaded hole near
the pin.
Newer Vernier Motion Detectors (green or black case with
adjustable sensitivity) can be placed so that the sensor is 15 cm
from the end of the track. The carts can then be detected
properly all the way to the end. The track mode is appropriate
for the dynamics system.
Adjustable Leveling Feet
The Adjustable Leveling Feet slide into the
end of the track, with the nut in the center
slot of the track underside. Adjust the height
as desired. Install the feet before attaching
the Motion Detector Bracket.
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Adjustable End Stop
The Adjustable End Stop slides into the end of
the track. Adjust the position as desired. Insert
magnets in the End Stop if desired.
Rod Clamp
The Rod Clamp is used to support the track with a
user-supplied ring stand. Insert the Rod Clamp nut
into the side of the track. Adjust the height as
desired.
Mounting Hardware
The supplied mounting hardware is used to
attach devices to the cart, such as a force
sensor, accelerometer, or mass. To attach a
Wireless Dynamics Sensor System (WDSS)
use the hardware supplied with that device.
The hex-head bolts may be attached to any
point along the slots in the cart, but the head
must be inserted in the flare region of the
slots. Tighten the threaded barrels on the
bolts.