DORIC LEDFRJ Series, Руководство пользователя

Страница: 11 / 21

Figure 3.2: Light Source Channel Configuration Window
1. The Channel Types (Fig. 3.2 ) are displayed on the left side of the window. These include Laser light sources,
Ce:YAG light sources and LED light sources, as well as the Scope to measure signal using the driver.
2. The Channel Options box (Fig. 3.2 ) includes Light Source Options and Trigger Options for the given channel.
a) The Channel (Fig. 3.2 ) drop-down list identifies which driver channel is currently being edited, assuming a
driver with multiple channels.
b) The Mode (Fig. 3.2 ) drop-down list includes each possible driver mode. These are used to control the pulse
sequences emitted by the light source. The options related to this mode are detailed with the Sequence
Options .
c) The Current Options (Fig. 3.2 ) includes the slider used to control the current sent to the light source.
• When using a 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 CAN OTHERWISE DAMAGE THE LIGHT SOURCE.
• When using a LEDD , the Low-Power checkbox will appear. When selected, this allows reduced-power
signaling for the same voltage. This mode is only available for CLED modules. This allows low-power
signals to be more stable in time. The maximal current is reduced to one tenth of light source’s normal
maximal current. If the BNC Output is used, the voltage of the signal is proportional to the current pass-
ing through the light source, and not the voltage sent to it. For example, a driver with a normal maximum
current of 2000 mA for a 5 V signal (400 mA/V) will have a maximum current of 200 mA for a 5 V signal
(40 mA/V). The BNC output of the driver will still relate LED current with a 400 mA/V conversion factor.
d) The Trigger Options (Fig. 3.2 ) allow the selection of a number of trigger modes to activate a pulse sequence.
• The Manual trigger mode is standard, and allows direction activation by the user.
• The Triggered trigger mode is active when an input greater than 4 V is detected on the BNC input. Fol-
lowing input pulses will be ignored while the sequence is running. The sequence will restart with the
arrival of the first input pulse after the sequence has finished.
Chapter 3. Doric Neuroscience Studio 11