Frederiksen Speedgate, Timing Bundle

A double photogate with built-in timer and display, which is capable of precise speed measurements, in addition to all the usual tasks of single photogate.
• Incorporates timer with display no separate timer required
• Easy to operate
• Double light barrier direct readout of speed
• Laser optics give high precision measurements
• Expandable with external sensors (e.g. microphones)
• Use two SpeedGates for all the traditional collision experiments
• Several SpeedGates can be daisy chained
• Pendulum period mode prevents off-by-one errors
• Auto rotating display
Speedgate can be used as stand-alone unit or pair can be used to carry out all the experiments you can do with two traditional photogates and universal timer plus much more: with the precisely spaced double laser system you get speed readings without length measurements or calculations. The traditional passage time measurements are still possible, if preferred, for teaching purposes.
The display divides into two parts giving you immediate access to all results. An adjacent status area shows when light rays are blocked, the state of external inputs etc.
SpeedGate is battery powered so can be used as stand-alone unit no cables are required. However, the apparatus can also be powered via a USB cable if preferred. It is operated using three push buttons, which control primary mode, secondary mode and reset. The reset button also functions as power switch. The primary and secondary modes each correspond to one part of the display.
Suggested experiments:
• Kinematics of uniformly accelerated motion
• 'g' by freefall
• Newton's second law
• One-dimensional elastic and inelastic collisions
• Mathematical pendulum
• Speed of sound (requires x SO150400 microphones)
Two SpeedGates can be used for collision experiments; the double display will show the two latest measurements. Connect two (or more) SpeedGates together, using the Speedgate Cable, to measure the time interval between the gates e.g. for acceleration experiments (does require a separate calculation - not directly displayed). The whole chain is reset with one button press.
The timer functions can even be used with external signals e.g. two microphones (SO86270) and SpeedGate makes complete setup for measuring the speed of sound.
Easy to work with the display even orients itself automatically when rotated.
The Bundle TI180110 comprises two Speedgate units a connecting cable.