Plexon TTL Adapter
5 parameters · BNC direct · OmniPlex compatible
Overview
The Plexon TTL Adapter connects ConductMaze behavioral events to Plexon OmniPlex or MAP neural recording systems. TTL pulses from the ConductMaze module are fed directly into Plexon digital input channels for real-time event marking during single-unit, LFP, or spike-sorting workflows.
OmniPlex compatibility ensures that ConductMaze events appear as standard digital events in PlexControl and Offline Sorter, with full support for event-triggered analysis windows and peri-event time histograms.
Setup Instructions
- Connect the TTL module via USB.
- Connect BNC output to the Plexon digital input port (typically DIG-IN on the headstage adapter).
- In ConductMaze > Integrations > Plexon, select the digital input port number.
- In PlexControl, enable digital input monitoring and set the trigger threshold.
- Verify events appear in the PlexControl event raster during a test trial.
Common Pitfalls
- ⚠Plexon digital inputs require clean 5V TTL levels. If using 3.3V output, events may fall below the detection threshold — use 5V mode in ConductMaze TTL settings.
- ⚠OmniPlex timestamps digital events at the neural data sample rate (typically 40 kHz). This provides sub-millisecond behavioral event timing — much better than ConductMaze native 10ms resolution.
Methods Text (Copy-Paste)
Behavioral events were time-stamped on the Plexon OmniPlex neural recording system (Plexon Inc., Dallas, TX) using the ConductMaze TTL module (ConductScience, Skokie, IL). Digital TTL pulses (5V, 500ms) were delivered via BNC to the OmniPlex digital input port for event-triggered spike analysis.
Suggested text for the Methods section of your manuscript.
Parameters
| Parameter | Type | Default | Description |
|---|---|---|---|
| Plexon System | enum | OmniPlex | Plexon system model (OmniPlex, MAP, Recorder) |
| Digital Input Port | integer | 1 | Plexon digital input port number (1-4) |
| Pulse Voltage | float | 5.0 | Output voltage (Plexon digital inputs are 5V TTL) |
| Pulse Duration | integer | 500 | Pulse width in milliseconds |
| Event Word Encoding | enum | Single | Single bit per event or 8-bit event word encoding |
Compatible Products
ME-OC-TTL
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