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4

Doric Neuroscience Studio

When the LED is controlled by Doric Neuroscience Studio Software, the light stimulation can be synchronized with

other data acquisition.

4.1 Light Sources

Doric Light Sources can be controlled by the Doric Neuroscience Studio. These include

LED Modules, Laser Diode Modules

and

Ce:YAG Fiber Light Source

. The interface is separated into two main sections,

Control & settings

and the

Acquisition

View

. Each light source driver has a number of

Channels

, each one controlling a light source of its given type. These

channels, accessible using the

Add Channel

will be the first detailed.

Figure 4.1:

Light Source Driver Tab

4.1.1 Channels

Each light source driver is separated into a number of

Channels

. Each channel controls a single light source. While each

channel can be controlled in

Stand-alone

mode by the driver, additional functions can be accessed for these channels

13

Summary of Contents for CLED

Page 1: ...Connectorized LEDs LED Drivers User Manual Version 1 1 2...

Page 2: ...tup 8 3 2 FC Connector Installation 9 3 3 Stand alone mode without Doric Neuroscience Studio Software 10 3 4 Connected to Doric Neuroscience Studio Software 12 4 Doric Neuroscience Studio 13 4 1 Light...

Page 3: ...driver is enabled The shorting electric wire in the interlock plug can be removed and replaced by the safety interlock circuit of the laboratory This safety feature is highly recommended with UV and...

Page 4: ...the outside of the light source The output beam exits from the Beam aperture The aperture is composed of a fiber coupling assembly that injects the emitted light into an optical fiber The standard mo...

Page 5: ...e Studio Software allows the access to more operating modes like CW external TTL external analog internal TTL and internal Complex modes Doric Neuroscience Studio Software enables the creation of diff...

Page 6: ...nnect the driver to an interlock system It is recom mended to connect the interlock plug to a laboratory interlock system This is critical when using LEDs in the UV or Infrared spectrum as they are in...

Page 7: ...is a small breadboard used to hold two Connectorized LEDs this allows the light sources to be easily moved when necessary It is ordered separately from the light source Figure 2 6 LED Breadboard with...

Page 8: ...3 Operations Guide 3 1 Connectorized LED Setup Figure 3 1 Connections to a 1 channel LED Driver in stand alone mode 1 Connect the LED Driver to the 12 VDC power supply 8...

Page 9: ...ical fiber while the light source is ON The CLED can be operated with the driver s stand alone capabilities Section 3 3 or using the Doric Neuro science Studio software Section 3 4 3 2 FC Connector In...

Page 10: ...The operating mode and the maximum driving current setting are independently adjusted for each channel Constant current CW Figure 3 3 Constant Current Mode Driver Signal When using the CW mode the use...

Page 11: ...5 bottom To avoid any clipping of the output waveform the maximum current setting must be equal to or greater than the corresponding maximum analog input voltage Low power mode To enable Low power mod...

Page 12: ...ted on Doric USB memory stick supplied with the LED driver and follow the on screen instructions 3 Connect the USB cable to the driver and the computer 4 Connect the Connectorized LED to the LED drive...

Page 13: ...parated into two main sections Control settings and the Acquisition View Each light source driver has a number of Channels each one controlling a light source of its given type These channels accessib...

Page 14: ...LED Driver module the Overdrive checkbox will appear When selected this allows the system to exceed the normal safe current limit of the light source THIS SHOULD ONLY BE USED WITH PULSED SIGNALS AS IT...

Page 15: ...Current Mode Driver Signal a The Continuous Wave mode Fig 4 3 produces a continuous signal at the chosen current This mode can only be triggered manually When this mode is active the driver channel wi...

Page 16: ...n ms for the pulse sequence For example a signal at 10 Hz frequency will output one pulse every 100 ms period whereas a pulse sequence at 0 5 Hz frequency will output one pulse every 2000 ms period ii...

Page 17: ...ile the Smoothing option is active the Time ON is fixed at this value v The Pulses per sequence Fig 4 6 sets the number of pulses per sequence If it is set to 0 the pulse will be repeated indefinitely...

Page 18: ...he other will adjust automatically The Time ON must be lower than 1 frequency 0 005 ms while the Duty cycle must be below 100 Figure 4 9 Internal Complex Mode Pulse Sequences viii The Types of pulses...

Page 19: ...re 4 12 Control Settings Time Series Window The Number of series Fig 4 12 sets the number of times that the sequence will be repeated with a minimum of 1 The Time Active sets the duration of each seri...

Page 20: ...View Light Source Channel 1 The Light Source Channel box Fig 4 13 contains all elements related to a single light source channel 2 The Scope Channel box Fig 4 14 is used to control and configure an ac...

Page 21: ...in kilosamples per second at which mea surements are taken j The Start scope channel button activates a live measurement sequence Important measurements should not be made as a live measurement as th...

Page 22: ...5 12 6 0 23 100 1 405 15 5 0 23 100 1 420 15 5 5 23 100 1 450 25 8 0 23 100 x1 7 465 25 7 5 23 100 x1 7 505 30 3 0 12 50 x1 6 515 40 3 0 9 5 40 x1 5 560 100 2 0 8 5 40 595 20 2 0 8 5 40 x1 2 625 20 3...

Page 23: ...t lower current Current adjustment steps 1 mA Rise Fall time 10 s Typical Modulation minimum frequency 0 01 Hz2 Internal complex mode 0 000054 Hz Modulation maximum frequency 50 kHz 3 dB attenuation M...

Page 24: ...commended Environmental specifications SPECIFICATION OPERATION STORAGE Use Indoor Indoor Temperature 20 C to 30 C 20 C to 60 C Humidity 40 60 RH non condensing 40 60 RH non condensing Chapter 5 Specif...

Page 25: ...ries This means that if any single safety feature is not properly in place the light source cannot be activated The Micro controller is used to control the light source driver a Key Switch b Interlock...

Page 26: ...to any connected light source If the Key is absent or the Interlock Plug has an open circuit it cannot receive signals from the micro controller preventing it from sending out current 6 2 Emission In...

Page 27: ...urn instructions This warranty will not be applicable if the unit is damaged or needs to be repaired as a result of improper use or operation outside the conditions stated in this manual For more info...

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