DORIC Fiberless and Wireless Optogenetically Synchronized Electrophysiology System, User Manual

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Analog Input
The Analog Input channels (Fig. 3.13 ) acquire from the Analog Input BNC connector ports. For these channels, Se-
quence Options are replaced by Global Options concerning the acquisition of data. These Global Options are applied
to all Analog input channels. They use different Channel Modes unique to the Analog Input channels.
Figure 3.13: Channel(s) configuration window, Analog Input Linear
There are two Global Options available to all Analog-in Modes .
1. The Acquisition Rate (Fig. 3.13 ) is measured in kilosamples per second. A rate of 1 kSps will acquire 1,000 samples
per second per channel. During an acquisition, a maximal amount of 3.6 * rate [in kSps] MB/min of data are created.
2. The Trigger Options defines the trigger source and mode.
a) The Trigger Source is either Manual or a Digital I/O channels.
b) The Trigger Mode is either Triggered or Gated . Gated mode is only available when the trigger source isn’t
Manual .
Each Analog-In Mode has a specific set of paramters. The function of each Mode is described here.
• The Linear channel mode (Fig. 3.13 ) allows the direct measurement of signal received by a channel. The linear
mode has the option of a frequency filter, found in the Filter Options box.
1. When the Activate Filter checkbox is selected, the defined filter is applied on all input data and displayed on
a new trace. The filtered data is for display only, and will not be saved.
2. The Filter Family drop-down list is used to choose the filter type. These include Bessel, Butterworth and
Chebyshev (I ad I) filters.
3. The Filter Type drop-down list allows the choice of a filter type from High-Pass , Low-Pass , Band-Pass and
Band-Stop .
4. The Ripples box is only available for Chebyshev filters. The ripple (either in the passband, or in the stopband)
defines the acceptable filter response ripples. The higher the ripples, the sharper the filter response.
5. The Order selector is linked to filter sharpness; a higher order will provide a sharper filter.
6. The Cutoff Frequency boxes are used to define the low/high cutoff values for the filter, depending on the
type used. The cutoff frequency must be less than half of the sampling rate.
Chapter 3. Doric Neuroscience Studio 24