Neurotechnology Research Systems
Optogenetic Controller
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8.4
Current or Voltage Output connectors
The stimulation output consists of four BNC connectors, one for each channel. In voltage mode, the
inner contact is the output voltage and the outer contact is connected to ground. In current mode,
the current going to the LED is carried on the inner contact and returns to the controller on the
outer contact.
8.5
Status LEDs
There are 16 status LEDs above the output BNC connectors.
8.5.1
Device
The Device LED indicates which controller number each box is when multiple controllers are
connected to a single computer. This is necessary to know which unit is being configured when
multiple tabs appear in the GUI. The LED above “1” will illuminate for controller number 1, the LED
above “2” will illuminate for controller number 2, etc.
8.5.2
I (on) V (off)
Each channel has a dedicated LED to indicate if it is outputting a voltage or current. If the channel is
configured for current output, the LED will be illuminated. If it is configured for voltage output it
will be off.
8.5.3
Running
Each channel has a dedicated LED to indicate if a pattern is running. It will stay illuminated for the
duration of the pattern, regardless of it the output is zero. It mirrors the output on the running
digital output pin.
8.5.4
Non-Zero
Each channel has a dedicated LED to indicate if a pattern is non-zero. It will only be illuminated
while the output is a value other than zero. So if the pattern is a series of pulses, the LED will be on
during the pulse but off in between pulses. It mirrors the output on the non-zero digital output pin.