Overview       Specs

  

 

 

     

StimTracker

What's Included

A StimTracker order ships with the following:

  • StimTracker unit

  • One white Cedrus Lightsensor

  • One black Cedrus Lightsensor

  • A universal AC adapter (100-240V)

  • A USB cable

  • An audio cable

  • 5 extra double-sided adhesives for the Cedrus Lightsensors

Any PC-compatible microphone may be used with the Mic connector.

Dimensions

Width:

 

17.8 cm (7 in)

Height:

 

5.6 cm (2.2 in)

Depth:

 

13.4 cm (5.25 in)

Weight:

 

0.52 kg (1.1 lb)

 

  

External Input Latencies

For best performance, none of the external input sources are routed via the microprocessor. The delays between input and output are:

Lightsensors:

 

Less than 0.01 milliseconds
(This is the latency due to StimTracker and does not include the lightsensor's response time)

Voice Key:

 

Less than 0.05 milliseconds after voice level rises above threshold

Audio:

 

Less than 0.05 milliseconds after voice level rises above threshold

Digital Input:

 

Less than 0.01 milliseconds

USB Port Latency

The latency for sending an event marker depends on the baud rate selected through the driver. At the recommended 115,000 baud rate, the three byte command needed for sending an event marker takes 0.36 milliseconds to transfer.

Once received, StimTracker processes the command and produces the output in less than 0.1 milliseconds.

There may be additional latencies introduced by the host computer, operation system, application, or a combination of the above, over which StimTracker has no control.

  

Cedrus Lightsensor

The Cedrus Lightsensor is available in two colors: black and white. Notches are molded in on three sides to allow for easy positioning on the screen.

Characteristics

The Cedrus Lightsensor has the following characteristics:

Response Time:
(dark to light)

 

0.05 milliseconds

Release Time:
(light to dark)

 

4 milliseconds

Spectral Sensitivity:

 

360-970 nm (visible light)

The response and release times are dependent on the amount of light.

Dimensions

The Cedrus Lightsensor is small, measuring a mere 8 mm (W) by 20 mm (L) including the wire's strain relief. Without the strain relief, it measures only 8 by 14 mm.

 

 

 
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