XDFviewer is a light-weight, intuitive application for viewing Open eXchange Data Format (OpenXDF) and European Data Format (EDF/+) files on Microsoft Windows platforms*. XDFviewer incorporates elements of successful commercial PSG and EEG software to provide collaborative research and diagnostic efforts with a powerful, easy-to-use, FREE viewer.

XDFviewer provides the following features for both OpenXDF and EDF files:

• 32 display channels
• An electrode editor for editing source electrode properties
• An intuitive montage editor
• On-plot polarity, filter, and sensitivity settings
• Fast high-pass, low-pass, and notch (50/60Hz) filters
• 10s, 15s, 20s, 30s, 1m, 2m, and 5m time bases
• 1/2s, 1s, 5s, and EEG-style (6mm) time reference lines
• Intuitive file navigation
• Configurable display colors
• Supports disjoint recording sessions within a data file
• Annotation display (event log)**
• Printing

XDFviewer provides the following additional features for OpenXDF files:

• Supports displaying multiple data files as one continuous plot
• Supports sleep scoring
• Highlighted snores, leg movements, respiratory events, etc.
• Sleep stage watermark on plot
• Extended patient information

A sample EDF file augmented with OpenXDF features is included with XDFviewer.

* System Requirements:

• Microsoft Windows 98/ME/NT4/2000/XP
• Microsoft Internet Explorer 5.0 or greater

** For EDF files, XDFviewer interprets entries on the EDF Annotations signal which have no duration, which are not used to timestamp data records, and which contain text as event log entries. All other annotations are ignored. For OpenXDF files, entries in the Notes section of the header are used.

Click an image below for a larger version: