a - Power supply to camera controller.
b - Cable connecting the camera head and the controller.
c - Camera controller (AtoD) to control panel .
d - Camera controller to EDT board.
e - 4 analog BNC inputs.
f - External Trigger.
g - TTL output that controls the shutter or LED during data acquisition.
h - short TTL output that triggers stimulator during acquisition.
unit is the external connection to the AtoD board and
thus has the capacity of sending out TTL and other analog signals as
well as accepting incoming signals.
Inputs 1-4 :
These 4 BNCs are intended for input of electrical data (Voltage, Current etc..) to be recorded in synchrony with the optical data. Connect the output from your amplifier(s) to any of those inputs. The inputs are digitized at 12 bit accuracy.
Connect this BNC to the "Pulse Input" BNC on your Shutter Control Box and set the later to "remote control" (Names relate to the Uniblitz shutter control and might vary). The data acquisition module of NeuroPlex controls the shutter via this output.
Connect this BNC to the "External trigger" of your stimulator. Any delay desired between the start of recording and the stimulus should then be set on your stimulator.
The purpose of this BNC is to synchronize the data taking with an external event (e.g. heartbeat, sniffing, EKG). When using the "external mode" (see software manual), after the "Start" button has been pushed, the program looks for an input voltage (2.5V or more) at this BNC to trigger the acquisition. The width of a repetitive triggering pulse should be shorter than the acceptable jitter in the relationship between the recorded event and the trigger. If the trigger signal is long (e.g. a duty cycle of 50%) different trials will be triggered at different phases of the cycle.