# LSL Inlet

Use the LSL Inlet mode to inject markers from 3rd party software to EEG data stream via EmotivPRO.‌

EmotivPRO can only receive markers after a recording on EmotivPRO has been started.

### LSL Inlet Configuration on EmotivPRO

| **SETTING**            | **DETAILS**                                                                                                                                                                          |
| ---------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| **Marker Stream**      | Select the stream name that will allow 3rd party software to communicate and add markers into PRO. *Please note, we only support streams with channel count =1 or channel count = 3* |
| **Device ID**          | This field displays the Device ID of the third party device that can communicate with PRO                                                                                            |
| **Number of channels** | This field displays the number of channels being transmitted to PRO                                                                                                                  |
| **Transition time**    | This value displays the transmission time                                                                                                                                            |
| **Data Stream**        | This field displays the type of data stream that can communicate with PRO                                                                                                            |
| **Connect**            | This button initiates the third party connection                                                                                                                                     |
| **Disconnect**         | This button terminates the third party connection                                                                                                                                    |

###

### LSL Outlet configuration on  3rd party software

Currently, We support Marker injection with 2 options:

| Type                                                                                                                                 | Stream Info                              | Channel name list                             | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| ------------------------------------------------------------------------------------------------------------------------------------ | ---------------------------------------- | --------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Simple Marker                                                                                                                        | type = 'Markers'  , *channel\_count = 1* | \["MarkerValue"]                              | <p>"MarkerValue" is value of Marker and it is Integer type. You can put Double type but EmotivPRO will extract integer part only before injecting to data stream.<br></p><p>EmotivPRO will get current Epoch time for Marker time.</p>                                                                                                                                                                                                                                         |
| <p>Marker with time for time synchronization</p><p></p><p>(\*) You should use this type when inject Marker from another machine.</p> | type = 'Markers'  , *channel\_count = 3* | \["MarkerTime", "MarkerValue", "CurrentTime"] | <p> "MarkerTime" is  Double type. It is time of Marker event. EmotivPRO will adjust the time for synchronization before injecting to data stream.<br></p><p>"MarkerValue" is value of Marker and it is Integer type. You can put Double type but EmotivPRO will extract integer part only before injecting to data stream.<br></p><p>"CurrentTime": is current Epoch time when the marker is pushed to LSL stream. The time is used to synchronize time between 2 machines</p> |