Dry EEG Wireless TriggerHub

Dry EEG Wireless TriggerHub

wearable sensing

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Dry EEG Wireless TriggerHub

The wireless trigger hub enables interfacing between Wearable Sensing’s Dry Sensor Interface (DSI) EEG headsets and other systems, facilitating device synchronization and third-party system integration. The hub allows you to acquire triggers from and transmit triggers to too many sources. consolidating up to 8 trigger sources into a single multi-channel output that inputs directly into DSI systems. The use of standardized input connectors and cables allows the user to connect and synchronize a wide range of third-party devices with the hub and with DSI systems. Triggers from the input parallel port are distributed across the connections on the output panel. The the trigger output voltage is 0 – 5 V, which is sufficient to drive the trigger inputs of standard devices.


  • 1 parallel port (DB-25 connector, 8 channels)
  • 4 analogue inputs
  • 2 via BNC connectors
  • 2 via 3.5 mm stereo connector
  • 1 line-level audio input (3.5 mm stereo connector)
  • 2 switch inputs (3.5 mm stereo connectors)
  • 1 auto-trigger function (output on all ports)

Hub Outputs to DSI Systems:

  • 8-bit wireless trigger
  • 8-bit wired (DB-25) trigger


  • Transmission range: 10 m
  • Repeater eliminates transmission shadow effect
  • Increases fidelity of transmission to 99.999%

Uses Standard Input Connectors:

  • Digital (parallel port (DB-25)
  • Analog (BNC connectors; 3.5 mm jack)
  • Line-level audio (3.5 mm jack)
  • Switch inputs (3.5 mm jack)

Analog/Parallel Port:

  • Input voltage range: 0-20 V

Audio Input:

  • Input voltage range: line-level, 2 Vpp
  • Min. audio signal level (1 kHz): 40 mVpp
  • Bandwidth: 40 Hz – 20 kHz (-3 dB)


  • Distributes a 1 Hz square wave to all outputs
  • Enables synchronization across multiple systems

Output Triggers

  • Voltage: 0-5 V
  • Current: 100 mA continuous/200 mA impulse
  • Min. pulse width: 20 ms
  • Min. Inter-trigger interval (rising edge): 40 ms
  • Latency: <100 micro s (digital/analog/switch inputs); <0.5 ms (audio input); 12 ms wireless with <400 micro s jitter
  • AutoTrigger: 1 Hz


  • Number of settings: 10
  • Range: 0.63-5.8 V
  • Adjustable thresholding circuit on every input
  • Resulting triggers are consolidated and transmitted to DSI systems


  • Micro-USB 1.x/2.0 receptacle


  • Photodetector
  • Push-button trigger
  • Stereo cable
  • Wired trigger cable
  • Wireless dongle
  • Wireless repeater

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