Extender is designed to be used to extend the battery life of your EMOTIV headset when communicating wirelessly. This is useful if you are using 256Hz EEG and 128Hz motion data which is power-intensive.

STEP 1

Turn Extender ON

Turn ON Extender by holding the push button for 2 seconds, the status LED will turn green.

STEP 2

Turn ON Headset

Turn on the headset and pair it to a dongle (USB Receiver) or BLE device.

STEP 3

Plug to a Headset

Plug the headset into the headset USB port of Extender using a supplied headset charge cable.

The headset will disconnect momentarily and should re-connect, if it doesn’t the firmware of your headset might be out of date.
The status LED will turn orange and the charge LEDs on the head should also show orange.

Before you are able to use Extender as a recording device you need a formatted microSD Card. You then need to follow the instructions shown in the following images and text.

STEP 1

Insert the MicroSD Card Into Extender

STEP 2

Turn ON Extender

Turn ON Extender by holding the push button for 2 seconds, the status LED will turn green.

STEP 3

Connect headset to Extender using the charge cable.

The headset will attempt a wireless connection before the USB and it is advisable to unplug all EMOTIV Universal USB receivers and disable BLE devices previously paired with the headset.

STEP 4

Turn ON Your Headset

When Extender detects the headset the green status LED will turn orange and is ready to record data.

STEP 5

Recording

To start a recording press the button, the status LED should now turn red.

In order to stop recording, press the button again. The status LED will now turn back to orange.

Pass through mode allows you to use your EMOTIV headset while it is plugged in. To operate Extender as a pass-through device with your headset, please follow the next steps.

STEP 1

Unplug All EMOTIV USB Receivers

The headset will attempt a wireless connection before the USB and it is advisable to unplug all EMOTIV Universal USB receivers (or dongles) and disable BLE devices previously paired with the headset.

STEP 2

Plug Extender into an open USB socket.

The PC connection is the smaller mini-B USB port on the left edge of Extender.

STEP 3

Turn ON Extender

Turn ON Extender by holding the push button for 2 seconds, the status LED will turn green.

STEP 4

Plug the headset

Plug the headset into the other USB port of Extender using the supplied charge cable.

STEP 5

Turn on the headset.

The USB detection system of your device should register a disconnection and a new USB connection which simulates an EMOTIV USB Receiver..

STEP 6

Start up your EMOTIV application.

The application should register the presence of the Insight connected through Extender.

You can access the data on the microSD card without needing an external card reader. This is explained in the next steps.

NOTE: All data stored to the SD card is encrypted and the EMOTIV Cortex application and a PRO license is required to decrypt the raw data.

STEP 1

Turn Extender ON

Turn ON Extender by holding the push button for 2 seconds, the status LED will turn green.

Ensure no headsets are connected.

STEP 2

Plug Extender into a PC

Your computer should detect it as a generic USB drive and after a few moments you should see it appear as a drive. You can now access the encrypted files on the disk.

The Extender’s hardware triggering feature allows you to mark external events with high accuracy for further analysis. The input trigger pulses are injected into the headset data stream so that the latency between trigger and sample is minimised to be within 1 sample. There is a stable fixed delay of 60ms from trigger input to appearing in the data stream.

The trigger pulse is shown in EmotiVPRO as a pink line and is also saved in the hardware column when exporting a file.

hardware triggering extender emotiv setup device

EMOTIV has provided a custom 1m trigger cable with every extender. The cable has two tinned wires red and black that can be connected to an external stimulus, the input polarity of the trigger is reversible because the opto-isolated trigger input has back to back output diodes utilising the Vishay VOL628A (datasheet). This part requires a minimum of 1mA forward current and maximum of 60mA. The input design has an internal limiting resistor of 1kOhm. The trigger input voltage is between 2.5-15V and driven directly off a parallel port or from an arduino. Please see below Arduino examples:

Trigger Cable

The Extender trigger input requires a 2.5mm audio connector which has an outer diameter of less than 6.8mm to fit into the socket.

EMOTIV has provided a 1m trigger cable with every Extender. It features the required low profile connector on one end and has two tinned wires (red and black) for connecting to your trigger source. We have provided some links with examples of arduino scripts.

For more help regarding the usage of EMOTIV Extender, please consult the manual or contact customer support.

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