sigrok - User contributions [en]

File format:Tektronix WFM

2014-12-28T14:13:10Z

Sync:

{{DISPLAYTITLE:File format:Tek WFM}}

The Tek WFM format is a special format used by TDS Series scopes. It uses less space than the CSV/Matlab export functions provided.

== Header ==

{| border="0" class="alternategrey sigroktable sortable"
|-
! style="width: 5em; text-align: left;" | Bytes
! style="text-align: left;" | Field
|-
| 0 - 1
| Magic Bytes
|-
| 2 - 5
| Format Code
|-
| 6
| Length of Data, Unsigned integer (so far always 4)
|-
| 7 - 11
| Number of bytes following
|-
| 12 - 15
| Another Magic
|-
| 16-20
| Length of Header + Data (big endian, signed integer)
|-
| 21 - 28
| Vertical Position (Double)
|-
| 29 - 36
| Horizontal Position (Double)
|-
| 37 - 43
| Vertical Zoom (Double)
|-
| 44 - 51
| Horizontal Zoom (Double)
|-
| 52 - 53
| Acquisition Mode (signed integer, currently unknown)
|-
| 54 - 55
| Min Max (unknown)
|-
| 56 - 63
| Duration in seconds (double)
|-
| 63 - 64
| Vertical Coupling (signed integer)
|-
| 65 - 66
| Horizontal Unit (signed integer)
|-
| 67 - 74
| Horizontal time per point (double)
|-
| 75 - 76
| Vertical Unit (signed integer)
|-
| 77 - 84
| Vertical Offset (double)
|-
| 85 - 92
| Vertical Position (double)
|-
| 93 - 100
| Vertical Gain (double)
|-
| 101 - 105
| Record length (unsigned integer)
|-
| 106 - 107
| Trigger Position (signed integer), possibly in points
|-
| 108 - 109
| Header Version (signed integer)
|-
| 110 - 111
| Sampling Density (??) (signed integer)
|-
| 112 - 113
| Burst Segment Length (signed integer)
|-
| 114 - 115
| Waveform Source (signed integer)
|-
| 116 - 121
| 3x Video 1 (signed integer)
|-
| 122 - 129
| Video 2 (double)
|-
| 130 - 131
| Video 3 (signed integer)
|-
| 131 - 163
| Preamble (???)
|}

== Data ==

Waveform data. Length of this segment is stored in Record length.

To reconstruct the waveform use the following:

<code> y = data[i] * vertgain / 25 / 256 + vertoffset - vertposition * vertgain </code> <br>
<code> x = (i - (reclength*trigpos/100)) * horizscaleperpoint </code>

[[Category:File format]]

File format:Tektronix WFM

2014-12-28T13:47:56Z

Sync:

File format:Tektronix WFM

2014-12-28T13:47:42Z

Sync: Created page with "{{DISPLAYTITLE:File format:Tek WFM}} The Tek WFM format is a special format used by TDS Series scopes. It uses less space than the CSV/Matlab export functions provivded. ==..."

{{DISPLAYTITLE:File format:Tek WFM}}

The Tek WFM format is a special format used by TDS Series scopes. It uses less space than the CSV/Matlab export functions provivded.

== Header ==

{| border="0" class="alternategrey sigroktable sortable"
|-
! style="width: 5em; text-align: left;" | Bytes
! style="text-align: left;" | Field
|-
| 0 - 1
| Magic Bytes
|-
| 2 - 5
| Format Code
|-
| 6
| Length of Data, Unsigned integer (so far always 4)
|-
| 7 - 11
| Number of bytes following
|-
| 12 - 15
| Another Magic
|-
| 16-20
| Length of Header + Data (big endian, signed integer)
|-
| 21 - 28
| Vertical Position (Double)
|-
| 29 - 36
| Horizontal Position (Double)
|-
| 37 - 43
| Vertical Zoom (Double)
|-
| 44 - 51
| Horizontal Zoom (Double)
|-
| 52 - 53
| Acquisition Mode (signed integer, currently unknown)
|-
| 54 - 55
| Min Max (unknown)
|-
| 56 - 63
| Duration in seconds (double)
|-
| 63 - 64
| Vertical Coupling (signed integer)
|-
| 65 - 66
| Horizontal Unit (signed integer)
|-
| 67 - 74
| Horizontal time per point (double)
|-
| 75 - 76
| Vertical Unit (signed integer)
|-
| 77 - 84
| Vertical Offset (double)
|-
| 85 - 92
| Vertical Position (double)
|-
| 93 - 100
| Vertical Gain (double)
|-
| 101 - 105
| Record length (unsigned integer)
|-
| 106 - 107
| Trigger Position (signed integer), possibly in points
|-
| 108 - 109
| Header Version (signed integer)
|-
| 110 - 111
| Sampling Density (??) (signed integer)
|-
| 112 - 113
| Burst Segment Length (signed integer)
|-
| 114 - 115
| Waveform Source (signed integer)
|-
| 116 - 121
| 3x Video 1 (signed integer)
|-
| 122 - 129
| Video 2 (double)
|-
| 130 - 131
| Video 3 (signed integer)
|}

[[Category:File format]]

Input output formats

2014-12-28T13:12:59Z

Sync:

[[libsigrok]] supports a number of different input modules (a.k.a. file formats) and output modules, and has a generic API which allows easily adding more input/output modules.

== Supported input/output formats ==

{| border="0" style="font-size: smaller" class="alternategrey sortable sigroktable"
|-
! style="width: 8em;" | Name
!Input
!Output
!Description
|-
| [[File format:analog|Analog]]
| bgcolor="yellow" | —
| bgcolor="lime" | supported
| Text output of analog data and types.
|-
| [[File format:ascii|ASCII]]
| bgcolor="yellow" | —
| bgcolor="lime" | supported
| ASCII art.
|-
| [[File format:binary|Binary]]
| bgcolor="lime" | supported
| bgcolor="lime" | supported
| Raw binary data output without any metadata attached.
|-
| [[File format:bits|Bits]]
| bgcolor="yellow" | —
| bgcolor="lime" | supported
| 0/1 digits.
|-
| style="white-space: nowrap;" | [[File format:chronovu_la8|ChronoVu LA8]]
| bgcolor="lime" | supported
| bgcolor="lime" | supported
| [[ChronoVu LA8]] software file format (usually with .kdt file extension).
|-
| [[File format:csv|CSV]]
| bgcolor="lime" | supported
| bgcolor="lime" | supported
| Comma-separated values.
|-
| [[File format:gnuplot|gnuplot]]
| bgcolor="yellow" | —
| bgcolor="lime" | supported
| Gnuplot data file format (tab-separated columns of '1' and '0' characters). You need another gnuplot input file such as [http://sigrok.org/gitweb/?p=libsigrok.git;a=blob;f=contrib/gnuplot_usbeesx.gpi this one] in addition.
|-
| [[File format:hex|hex]]
| bgcolor="yellow" | —
| bgcolor="lime" | supported
| Hexadecimal digits.
|-
| [[File format:ols|ols]]
| bgcolor="yellow" | —
| bgcolor="lime" | supported
| The file format used by the [http://www.lxtreme.nl/ols/ "Alternative" Java client] for the [[Openbench Logic Sniffer]].
|-
| [[File format:srzip|srzip]]
| bgcolor="lime" | supported
| bgcolor="lime" | supported
| The current (v2) sigrok session file format (*.sr).
|-
| [[File format:vcd|VCD]]
| bgcolor="lime" | supported
| bgcolor="lime" | supported
| The [http://en.wikipedia.org/wiki/Value_change_dump Value Change Dump] format (can also be visualized in [http://gtkwave.sourceforge.net/ gtkwave], for instance).
|-
| [[File format:wav|WAV]]
| bgcolor="lime" | supported
| bgcolor="lime" | supported
| The [http://en.wikipedia.org/wiki/WAV waveform audio] (WAV) file format.

|}

== Possible candidates for future input/output formats ==

{| border="0" style="font-size: smaller" class="alternategrey sortable sigroktable"
|-
!Name
!Description
|-
| Scanalogic
| Used by the [[IKALOGIC Scanalogic-2]] and [[IKALOGIC ScanaPLUS]] logic analyzers.
|-
| [[File format:rigol_rof|Rigol ROF]]
| Used by the [[Rigol DP800 series]] power supplies.
|-
| [[File format:rigol_raf|Rigol RAF]]
| Used by the Rigol DG1000Z, DG4000, and DG5000 series signal generators. See [http://www.batronix.com/pdf/Rigol/UserGuide/DG1000Z_UserGuide_EN.pdf DG1000Z User Guide] page 2-75, also [http://www.eevblog.com/forum/testgear/rigol-dg4000-series-raf-file-format/msg559443/ this post] at eevblog.
|-
| Vector MDF (v3.3) / ASAM MDF (v4.x)
| Automotive industry standard format. Docs can be found [http://vector.com/vi_mdf_de.html here] and [http://vector.com/downloads/mdf_specification.pdf here]. Validator is [http://vector.com/downloads/MDFValidator2.1.8.zip here]. Some code is [https://code.google.com/p/mdfreader/ here] and [http://sourceforge.net/p/mdfdatafile/code/HEAD/tree/ here].
|-
| [http://en.wikipedia.org/wiki/Comtrade COMTRADE]
| File format used by devices in power engineering (e.g. protective relays, fault recorders). Can contain digital and analog data with constant or variable sample rate.
|-
| [[File format:pwl|PWL]]
| Trivial file format that can be used to define the signal of voltage/current sources in a SPICE simulation.
|-
| [[File format:Tek_WFM|Tek WFM]]
| Used by Tektronix TDS Series oscilloscopes. A parser for Matlab can be found [http://www.mathworks.com/matlabcentral/fileexchange/5873-tektronix-binary-file-readers/content/wfmread.m here]
|}

Input output formats

2014-12-28T13:07:22Z

Sync: