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 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
trigger output voltage is 0 – 5 V, which is sufficient to drive the trigger inputs of standard devices.

Product Features

Description

Inputs/Outputs

1 parallel port (DB-25 connector, 8 channels)
4 analog 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

Wireless

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)

AutoTrigger

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

Threshold