Time, Speed Acceleration + GM Counter


Time, Speed Acceleration (TSA), B1-1000.02, £156.00

TSA + GM CounterTSA+ GM Counter has been designed to give a smart, modern look and feel.
TSA is much, much more than just another Timer. TSA is a microprocessor based, stand alone unit. It is a very versatile instrument having the following modes of operation

  • Time Interval (4)
  • Event times (8)
  • Speed (4)
  • Acceleration Data
  • Accelerations (2)
  • A fast timer - 1/100th of a millisecond (8)
  • A Gap Timer (1)
  • Geiger Muller Tube Mode - Ratemeter; Counter; Period Count

The Acceleration Data mode displays two velocities and the time interval been the velocities. Students can use this information to calculate the acceleration. Once the concept has been developed students can then switch to using the Acceleration mode to explore and investigate their world without having to do the calculation every time.


The latest mode to be added is the GM Mode which has three sub modes:
Ratemeter: for studying the properties of alpha, beta and gamma sources.
Counter: displays the counts/minute and can be measured every 1, 2, 5, 10, 15, 30 & 60 minutes.
Up to 100 readings can be stored and they remain in memory after power down.
The statistics available are: maximum, minimum, number of readings and average.
Period Count: this displays the number of counts in 1, 2, 5, 10, 15, 30 & 60 minutes.
This is useful when studying very low levels of radiation from substances e.g. walnuts.
An unexpected bonus: using the Ratemeter mode a signal generator can be calibrated up to 49kHz with an accuracy of plus or minus one Hertz.


Our low current Light Bridge connects directly to TSA or ALBA enabling velocities and accelerations to be displayed. There are no internal batteries and no bulbs to replace.
Our Light Gates, Sound Switches , Timing Plate and Reaction Timer plug into the DIN sockets on TSA. This increases its functionality in the classroom. There are two digital inputs - each input can accept DIN plug or 4mm plug. The inputs are TTL compatible.
The Light Gate Source part of the Light Gate now has an infra red source. This results in a much longer battery life.

For users in hot countries with power supply difficulties, TSA can be run from a rechargeable PP3 battery which can be recharged using our solar cell. The current required to drive TSA is 15mA

If you are going to be doing a lot of work away from the mains supply then we would recommend using our battery box which has 6 AA cells.

Because pupils find TSA easy to use it is an ideal instrument for investigations.
The manual has lots of suggestions and tips for using TSA - View a copy of the manual - this may take a few moments to load. A booklet version of the manual is available for those with access to double sided printing - see data sheets in the Teachers Section.
TSA is supplied with a plugtop power supply.

View video on using TSA

Associated products for use with TSA

Note that all of the above also work with the ALBA Interface and Logger.






© djb microtech ltd