Format
Gatan Digital Micrograph File Format (DM3)
Summary
- Name
- Gatan Digital Micrograph File Format (DM3)
- Version
- 3
- Identifiers
- PUID: fmt/1131
- Format type
- Image (Raster)
- Description
- DM3 is a file format produced by some Digital Micrography instruments created by Gatan. Please contact the PRONOM team if you are able to provide a more detailed description.
- File extensions
-
dm3 - Submitted by
- Bodleian Library, University of Oxford / Bodleian Library, University of Oxford
Internal signatures
Gatan Digital Micrograph 3
- Description
- BOF version 3 {4} endianness 00 = big, 01 = little {6} (tag directory|tag) {2-256} (2 byte tag length value + tag name which can be of zero length. Theroetically tag name could be ~65k long but limiting to 256 bytes for signature efficiency as highly unlikely to be greater. Scope to extend if necessary though). String "%%%%" EOF: 8 null bytes
- Provenance
- Largely base on http://www.er-c.org/cbb/info/dmformat/
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
00000003{4}000000(00|01){6}(14|15){2-258}25252525- Endianness
- None
- Min Frag Length
- Absolute from EOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
0000000000000000- Endianness
- None
Changelog
-
V93
- Release date
- 30 November 2017
-
Added format
Gatan Digital Micrograph File Format (DM3) 3: Full entry added. Submitted by Bodleian Libraries, University of Oxford.
-
Added signature
Gatan Digital Micrograph File Format (DM3) 3: Signature developed with Bodleian Libraries, University of Oxford.