---
name: "eegdev-open-options"
section: "5"
platform: "linux"
package: "libeegdev0t64"
version: "0.2-10"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/eegdev-open-options"
---

# eegdev-open-options(5)

Device configuration format specification

## NAME

eegdev-open-options - Device configuration format specification

## DESCRIPTION

### Syntax of the configuration string

The device configuration string should follow the syntax:

device\[\[\|option1\|value1\]...\[\|optionN\|valueN\]\]

If the specified device does not support a certain pair of option\|value, this will be silently ignored by the opening function. *device* should be the name of a eegdev plugin or **any**. In the later case, it will try to open one of the devices supported by the installed plugins.

### Syntax of the configuration files

The configuration files are made of statements (at most one per line) following this syntax (whitespace are ignored):\
 option = value

Comments are preceded by the '#' character:

```
# comment line 1
# comment line 2
option = value #comment2
```

## FILES

- /etc/eegdev/eegdev.conf

  Shared configuration file.

- /etc/eegdev/\<plugin\>.conf

  Configuration file loaded when the plugin *\<plugin\>* is used. The settings specified here overrides the settings in the shared configuration file.

## EXAMPLES

### Configuration string examples

Device sourcing its data from the GDF file located at "/home/user/data.gdf":\
 datafile\|path\|/home/user/data.gdf

Biosemi device configured to use 32 electrodes:\
 biosemi\|numch\|32

gTec system consisting in a chain of 2 systems (the first 2 available) with a notch filter at 60Hz without lowpass or highpass sampling at 512Hz  (default sampling rate):\
 gtec\|notch\|60\|lowpass\|none\|highpass\|none\|deviceid\|any+any

Any supported type of device but should have the serial number UB-2009.10.06 if it is a gTec system:\
 any\|deviceid\|UB-2009.10.06

### Configuration file example

```
# gTec configuration examples
notch  = 60 # Notch value for USA
lowpass =none
highpass=none
 # Specify a coupled system by default
deviceid = any+any
```

## SEE ALSO

[**egd\_open**(3)](/egd_open/3.md)