12 HEG Interface................................................................................................................................13
13 Other Sensors.................................................................................................................................13
14 8-LED Display (Q/E/H-wiz).........................................................................................................14
15 EEG Cap Interface (Q-wiz only)...................................................................................................14
16 Poor Signal Detection....................................................................................................................16
17 Test Signals...................................................................................................................................17
18 Saving Configurations...................................................................................................................17
19 Fail-safe Mode...............................................................................................................................17
20 Commanding the Wiz – ioExplorer............................................................................................18
21Commanding the Wiz – ioEra.....................................................................................................19
22 Commanding the Wiz – Wiz Central App (in development)........................................................21
23Fault Finding..................................................................................................................................22
EEG......................................................................................................................................22
HEG......................................................................................................................................23
OTHER.................................................................................................................................23
24Summary Specification..................................................................................................................24
3 Summary
The Wi suite of products support EEG, ECG, EMG, SCP, HEG (nIR & pIR) and Pulse Oximetry bio-signal
acquisition. They require software such as BioExplorer (PC) and BioEra (Tablet), together with sensors –
electrodes for ExG, headbands for HEG, or a Pulse Oximeter – to complete a biofeedback system.
All products in the suite utilise the latest 24-bit precision technology. All ExG products feature user selection
of DC or AC coupling, linking of reference electrodes, electrode impedance measurement, and individual
electrode-off indications. Electrode impedance measurement can be real-time, concurrent with training. All
HEG products feature auto base-lining to a common, nominal value of 100. This allows swapping easily
between the various HEG modalities without the need for changing protocols and feedback presentation
settings. For the oximetry based modalities, the constituent IR and Red signals are separately available.
The Wi product suite has been designed to allow the common, simple tasks such as one-channel EEG or
HEG training to be initiated with a minimum of fuss. Few buttons, no menus. If a HEG headband is plugged in
then the Wi will automatically recognise what type of headband it is and adjust accordingly. With no HEG
headbands connected, the Wi defaults to EEG. For single channel training, irrespective of the modality, the
signal will appear at the software as channel 1.
The Wi products can function as simple bio-signal sources for biofeedback software. However increasingly
the binding between the hardware and the software is becoming stronger. For example, some functions on
Wi products are instigated only by commands from the PC application, they cannot be access through the
buttons on the device itself. Moreover the U-wi and X-wi products have no buttons, so basic functions like
Power on/off appear as buttons on the biofeedback software. This binding with the software extends to
managing different modalities: changes in the use of a channel, from say EEG to HEG are advised to the
software which can reconfigure automatically – no changes in driver, indeed a single design can be created to
handle multiple modalities.
Most Wi devices can connect to a PC or tablet via USB or wireless – and some can do both concurrently.
However in general products are designed to operate principally with one or other transport mechanism.
Products that can transmit over USB and wireless concurrently allow for multi-seat training room situations:
training can occur over a robust USB link to a PC or Tablet, and a central Monitoring point can monitor the
signals from the multiple seats over a wireless link. Up to 8 seats can be supported in this fashion.
The Q-wi is capable of 4 bio-signal channels. These can be 4 ExG signals or a combination of ExG and
HEG, or HEG only. It is the preferred product when both ExG and HEG modalities are required. It can also
interface to a 19 or 21-ch eeg cap, where a mix of 4 eeg channels is selected from the 21 available. The
