Import of Bruker OPUS files

Bruker OPUS files have also a proprietary file format. The Opus reader (read_opus() ) of spectrochempy is essentially a wrapper of the python module brukeropus developed by Josh Duran. The use of read_opus() is similar to that of read_omnic().

Basic loading of OPUS file

Individual Opus files can be opened and loaded as a new NDDataset using:

import spectrochempy as scp

Z = scp.read_opus("irdata/OPUS/test.0002")
Z

NDDataset [test] — float64, shape: (y:1, x:2567), a.u.

name

:

test

author

:

runner@runnervmzvulz

created

:

2026-08-16 03:11:24+00:00

description

:

Dataset from opus files.
Spectra type: Absorbance

history

:

2026-08-16 03:11:24+00:00> 2026-08-16 03:11:24.944653+00:00: import from opus files

Data

title

:

absorbance

values

:

[[0.0002479 0.0002325 ... 0.5809 0.6376]] a.u.

shape

:

(y:1, x:2567)

Dimension `x`

size

:

2567

title

:

wavenumber

coordinates

:

[ 3998 3997 ... 700.7 699.4] cm⁻¹

Dimension `y`

size

:

1

title

:

acquisition timestamp (GMT)

coordinates

:

[1.581e+09] s

labels

:

[[ 2020-02-06 12:10:06.368000+00:00]
[ MCT D317 1mm² [8500 - 700 Cm-1]]
[ /home/runner/.spectrochempy/testdata/irdata/OPUS/test.0002]]

The namespace API is equivalent:

Z = scp.opus.read("irdata/OPUS/test.0002")
Z

NDDataset [test] — float64, shape: (y:1, x:2567), a.u.

name

:

test

author

:

runner@runnervmzvulz

created

:

2026-08-16 03:11:24+00:00

description

:

Dataset from opus files.
Spectra type: Absorbance

history

:

2026-08-16 03:11:24+00:00> 2026-08-16 03:11:24.963395+00:00: import from opus files

Data

title

:

absorbance

values

:

[[0.0002479 0.0002325 ... 0.5809 0.6376]] a.u.

shape

:

(y:1, x:2567)

Dimension `x`

size

:

2567

title

:

wavenumber

coordinates

:

[ 3998 3997 ... 700.7 699.4] cm⁻¹

Dimension `y`

size

:

1

title

:

acquisition timestamp (GMT)

coordinates

:

[1.581e+09] s

labels

:

[[ 2020-02-06 12:10:06.368000+00:00]
[ MCT D317 1mm² [8500 - 700 Cm-1]]
[ /home/runner/.spectrochempy/testdata/irdata/OPUS/test.0002]]

Note: In the previous use of read_opus(), we have assumed that the file is in datadir folder (see the import tutorial or more details on this). If this not the case, you should use an absolute path or a relative path to the current notebook folder.

For multifile loading, one can use:

Z1 = scp.read_opus("test.0000", "test.0001", "test.0002", directory="irdata/OPUS")
Z1

NDDataset — float64, shape: (y:3, x:2567), a.u.

name

:

NDDataset_2a2397af

author

:

runner@runnervmzvulz

created

:

2026-08-16 03:11:25+00:00

description

:

Concatenation of 3 datasets:
( test, test, test )

history

:

2026-08-16 03:11:25+00:00> Created by concatenate from 3 datasets: test, test, test
2026-08-16 03:11:25+00:00> Merged from several files

Data

title

:

absorbance

values

:

[[0.000459 0.0004219 ... 0.5771 0.6324]
[0.000451 0.0004229 ... 0.5752 0.6311]
[0.0002479 0.0002325 ... 0.5809 0.6376]] a.u.

shape

:

(y:3, x:2567)

Dimension `x`

size

:

2567

title

:

wavenumber

coordinates

:

[ 3998 3997 ... 700.7 699.4] cm⁻¹

Dimension `y`

size

:

3

title

:

acquisition timestamp (GMT)

coordinates

:

[1.581e+09 1.581e+09 1.581e+09] s

labels

:

[[ 2020-02-06 12:09:58.095000+00:00 2020-02-06 12:10:02.232000+00:00 2020-02-06 12:10:06.368000+00:00]
[ MCT D317 1mm² [8500 - 700 Cm-1] MCT D317 1mm² [8500 - 700 Cm-1] MCT D317 1mm² [8500 - 700 Cm-1]]
[ /home/runner/.spectrochempy/testdata/irdata/OPUS/test.0000 /home/runner/.spectrochempy/testdata/irdata/OPUS/test.0001
/home/runner/.spectrochempy/testdata/irdata/OPUS/test.0002]]

Note: By default all files in the given directory are merged as a single dataset if they are compatibles (i.e., same shape, same type of experiment…). If they cannot be merged due to incompatible shape or type, separate datasets are returned with dataset merged in different groups.

For instance in the following, two dataset will be returned:

LZ1 = scp.read_opus(
    "test.0000", "test.0001", "test.0002", "background.0", directory="irdata/OPUS"
)
LZ1

List (len=2, type=NDDataset)

• 0: NDDataset — float64, shape: (y:3, x:2567), a.u.

  name

  :

  NDDataset_2a31ec8f

  author

  :

  runner@runnervmzvulz

  created

  :

  2026-08-16 03:11:25+00:00

  description

  :

  Concatenation of 3 datasets:
  ( test, test, test )

  history

  :

  2026-08-16 03:11:25+00:00> Created by concatenate from 3 datasets: test, test, test
  2026-08-16 03:11:25+00:00> Merged from several files

  Data

  title

  :

  absorbance

  values

  :

  ...

  [[0.000459 0.0004219 ... 0.5771 0.6324]
  [0.000451 0.0004229 ... 0.5752 0.6311]
  [0.0002479 0.0002325 ... 0.5809 0.6376]] a.u.

  shape

  :

  (y:3, x:2567)

  Dimension x

  size

  :

  2567

  title

  :

  wavenumber

  coordinates

  :

  [ 3998 3997 ... 700.7 699.4] cm⁻¹

  Dimension y

  size

  :

  3

  title

  :

  acquisition timestamp (GMT)

  coordinates

  :

  [1.581e+09 1.581e+09 1.581e+09] s

  labels

  :

  ...

  [[ 2020-02-06 12:09:58.095000+00:00 2020-02-06 12:10:02.232000+00:00 2020-02-06 12:10:06.368000+00:00]
  [ MCT D317 1mm² [8500 - 700 Cm-1] MCT D317 1mm² [8500 - 700 Cm-1] MCT D317 1mm² [8500 - 700 Cm-1]]
  [ /home/runner/.spectrochempy/testdata/irdata/OPUS/test.0000 /home/runner/.spectrochempy/testdata/irdata/OPUS/test.0001
  /home/runner/.spectrochempy/testdata/irdata/OPUS/test.0002]]
• 1: NDDataset [background] — float64, shape: (y:1, x:4096)

  name

  :

  background

  author

  :

  runner@runnervmzvulz

  created

  :

  2026-08-16 03:11:25+00:00

  description

  :

  Dataset from opus files.
  Spectra type: Single-channel reference spectra

  history

  :

  2026-08-16 03:11:25+00:00> 2026-08-16 03:11:25.112818+00:00: import from opus files

  Data

  title

  :

  single-channel reference spectra

  values

  :

  ...

  [[ 0.01242 0.01243 ... 0.001023 0.01261]]

  shape

  :

  (y:1, x:4096)

  Dimension x

  size

  :

  4096

  title

  :

  wavenumber

  coordinates

  :

  [ 5265 5263 ... 1.286 0] cm⁻¹

  Dimension y

  size

  :

  1

  title

  :

  acquisition timestamp (GMT)

  coordinates

  :

  [1.581e+09] s

  labels

  :

  ...

  [[ 2020-02-06 12:01:55.349000+00:00]
  [ MCT D317 1mm² [8500 - 700 Cm-1]]
  [ /home/runner/.spectrochempy/testdata/irdata/OPUS/background.0]]

Multifile loading can also be achieved by only specifying the directory to read, if all files in a directory must be read:

LZ = scp.read_opus("irdata/OPUS")
LZ

List (len=3, type=NDDataset)

• 0: NDDataset — float64, shape: (y:4, x:2567), a.u.

  name

  :

  NDDataset_2a5a5f86

  author

  :

  runner@runnervmzvulz

  created

  :

  2026-08-16 03:11:25+00:00

  description

  :

  Concatenation of 4 datasets:
  ( test, test, test, test )

  history

  :

  2026-08-16 03:11:25+00:00> Created by concatenate from 4 datasets: test, test, test, test
  2026-08-16 03:11:25+00:00> Merged from several files

  Data

  title

  :

  absorbance

  values

  :

  ...

  [[0.000459 0.0004219 ... 0.5771 0.6324]
  [0.000451 0.0004229 ... 0.5752 0.6311]
  [0.0002479 0.0002325 ... 0.5809 0.6376]
  [0.0003685 0.0003442 ... 0.5827 0.6388]] a.u.

  shape

  :

  (y:4, x:2567)

  Dimension x

  size

  :

  2567

  title

  :

  wavenumber

  coordinates

  :

  [ 3998 3997 ... 700.7 699.4] cm⁻¹

  Dimension y

  size

  :

  4

  title

  :

  acquisition timestamp (GMT)

  coordinates

  :

  [1.581e+09 1.581e+09 1.581e+09 1.581e+09] s

  labels

  :

  ...

  [[ 2020-02-06 12:09:58.095000+00:00 2020-02-06 12:10:02.232000+00:00 2020-02-06 12:10:06.368000+00:00 2020-02-06 12:10:10.505000+00:00]
  [ MCT D317 1mm² [8500 - 700 Cm-1] MCT D317 1mm² [8500 - 700 Cm-1] MCT D317 1mm² [8500 - 700 Cm-1] MCT D317 1mm² [8500 - 700 Cm-1]]
  [ /home/runner/.spectrochempy/testdata/irdata/OPUS/test.0000 /home/runner/.spectrochempy/testdata/irdata/OPUS/test.0001
  /home/runner/.spectrochempy/testdata/irdata/OPUS/test.0002 /home/runner/.spectrochempy/testdata/irdata/OPUS/test.0003]]
• 1: NDDataset [OPUS_assembled_file] — float64, shape: (y:95, x:1607), a.u.

  name

  :

  OPUS_assembled_file

  author

  :

  runner@runnervmzvulz

  created

  :

  2026-08-16 03:11:25+00:00

  description

  :

  Dataset from opus files.
  Spectra type: Absorbance

  history

  :

  2026-08-16 03:11:25+00:00> 2026-08-16 03:11:25.292373+00:00: import from opus files

  Data

  title

  :

  absorbance

  values

  :

  ...

  [[0.009281 0.009549 ... 0.03194 0.05728]
  [0.009423 0.009198 ... 0.03941 0.04382]
  ...
  [0.008347 0.008503 ... 0.01711 0.007519]
  [0.009164 0.009174 ... 0.02331 0.02256]] a.u.

  shape

  :

  (y:95, x:1607)

  Dimension x

  size

  :

  1607

  title

  :

  wavenumber

  coordinates

  :

  [ 3996 3994 ... 900.7 898.8] cm⁻¹

  Dimension y

  size

  :

  95

  title

  :

  elapsed time

  coordinates

  :

  [ 1.265 7.748 ... 602.3 608.8] s
• 2: NDDataset [background] — float64, shape: (y:1, x:4096)

  name

  :

  background

  author

  :

  runner@runnervmzvulz

  created

  :

  2026-08-16 03:11:25+00:00

  description

  :

  Dataset from opus files.
  Spectra type: Single-channel reference spectra

  history

  :

  2026-08-16 03:11:25+00:00> 2026-08-16 03:11:25.301005+00:00: import from opus files

  Data

  title

  :

  single-channel reference spectra

  values

  :

  ...

  [[ 0.01242 0.01243 ... 0.001023 0.01261]]

  shape

  :

  (y:1, x:4096)

  Dimension x

  size

  :

  4096

  title

  :

  wavenumber

  coordinates

  :

  [ 5265 5263 ... 1.286 0] cm⁻¹

  Dimension y

  size

  :

  1

  title

  :

  acquisition timestamp (GMT)

  coordinates

  :

  [1.581e+09] s

  labels

  :

  ...

  [[ 2020-02-06 12:01:55.349000+00:00]
  [ MCT D317 1mm² [8500 - 700 Cm-1]]
  [ /home/runner/.spectrochempy/testdata/irdata/OPUS/background.0]]

As previously two datasets are returned due to the incompatible types and shapes of the experiments.

If one desire to load of files into separate datasets, then set the merge attribute to False.

LZ1 = scp.read_opus("irdata/OPUS", merge=False)
LZ1

List (len=6, type=NDDataset)

• 0: NDDataset [test] — float64, shape: (y:1, x:2567), a.u.

  name

  :

  test

  author

  :

  runner@runnervmzvulz

  created

  :

  2026-08-16 03:11:25+00:00

  description

  :

  Dataset from opus files.
  Spectra type: Absorbance

  history

  :

  2026-08-16 03:11:25+00:00> 2026-08-16 03:11:25.600144+00:00: import from opus files

  Data

  title

  :

  absorbance

  values

  :

  ...

  [[0.000459 0.0004219 ... 0.5771 0.6324]] a.u.

  shape

  :

  (y:1, x:2567)

  Dimension x

  size

  :

  2567

  title

  :

  wavenumber

  coordinates

  :

  [ 3998 3997 ... 700.7 699.4] cm⁻¹

  Dimension y

  size

  :

  1

  title

  :

  acquisition timestamp (GMT)

  coordinates

  :

  [1.581e+09] s

  labels

  :

  ...

  [[ 2020-02-06 12:09:58.095000+00:00]
  [ MCT D317 1mm² [8500 - 700 Cm-1]]
  [ /home/runner/.spectrochempy/testdata/irdata/OPUS/test.0000]]
• 1: NDDataset [test] — float64, shape: (y:1, x:2567), a.u.

  name

  :

  test

  author

  :

  runner@runnervmzvulz

  created

  :

  2026-08-16 03:11:25+00:00

  description

  :

  Dataset from opus files.
  Spectra type: Absorbance

  history

  :

  2026-08-16 03:11:25+00:00> 2026-08-16 03:11:25.608298+00:00: import from opus files

  Data

  title

  :

  absorbance

  values

  :

  ...

  [[0.000451 0.0004229 ... 0.5752 0.6311]] a.u.

  shape

  :

  (y:1, x:2567)

  Dimension x

  size

  :

  2567

  title

  :

  wavenumber

  coordinates

  :

  [ 3998 3997 ... 700.7 699.4] cm⁻¹

  Dimension y

  size

  :

  1

  title

  :

  acquisition timestamp (GMT)

  coordinates

  :

  [1.581e+09] s

  labels

  :

  ...

  [[ 2020-02-06 12:10:02.232000+00:00]
  [ MCT D317 1mm² [8500 - 700 Cm-1]]
  [ /home/runner/.spectrochempy/testdata/irdata/OPUS/test.0001]]
• 2: NDDataset [test] — float64, shape: (y:1, x:2567), a.u.

  name

  :

  test

  author

  :

  runner@runnervmzvulz

  created

  :

  2026-08-16 03:11:25+00:00

  description

  :

  Dataset from opus files.
  Spectra type: Absorbance

  history

  :

  2026-08-16 03:11:25+00:00> 2026-08-16 03:11:25.616455+00:00: import from opus files

  Data

  title

  :

  absorbance

  values

  :

  ...

  [[0.0002479 0.0002325 ... 0.5809 0.6376]] a.u.

  shape

  :

  (y:1, x:2567)

  Dimension x

  size

  :

  2567

  title

  :

  wavenumber

  coordinates

  :

  [ 3998 3997 ... 700.7 699.4] cm⁻¹

  Dimension y

  size

  :

  1

  title

  :

  acquisition timestamp (GMT)

  coordinates

  :

  [1.581e+09] s

  labels

  :

  ...

  [[ 2020-02-06 12:10:06.368000+00:00]
  [ MCT D317 1mm² [8500 - 700 Cm-1]]
  [ /home/runner/.spectrochempy/testdata/irdata/OPUS/test.0002]]
• 3: NDDataset [test] — float64, shape: (y:1, x:2567), a.u.

  name

  :

  test

  author

  :

  runner@runnervmzvulz

  created

  :

  2026-08-16 03:11:25+00:00

  description

  :

  Dataset from opus files.
  Spectra type: Absorbance

  history

  :

  2026-08-16 03:11:25+00:00> 2026-08-16 03:11:25.624673+00:00: import from opus files

  Data

  title

  :

  absorbance

  values

  :

  ...

  [[0.0003685 0.0003442 ... 0.5827 0.6388]] a.u.

  shape

  :

  (y:1, x:2567)

  Dimension x

  size

  :

  2567

  title

  :

  wavenumber

  coordinates

  :

  [ 3998 3997 ... 700.7 699.4] cm⁻¹

  Dimension y

  size

  :

  1

  title

  :

  acquisition timestamp (GMT)

  coordinates

  :

  [1.581e+09] s

  labels

  :

  ...

  [[ 2020-02-06 12:10:10.505000+00:00]
  [ MCT D317 1mm² [8500 - 700 Cm-1]]
  [ /home/runner/.spectrochempy/testdata/irdata/OPUS/test.0003]]
• 4: NDDataset [OPUS_assembled_file] — float64, shape: (y:95, x:1607), a.u.

  name

  :

  OPUS_assembled_file

  author

  :

  runner@runnervmzvulz

  created

  :

  2026-08-16 03:11:25+00:00

  description

  :

  Dataset from opus files.
  Spectra type: Absorbance

  history

  :

  2026-08-16 03:11:25+00:00> 2026-08-16 03:11:25.584916+00:00: import from opus files

  Data

  title

  :

  absorbance

  values

  :

  ...

  [[0.009281 0.009549 ... 0.03194 0.05728]
  [0.009423 0.009198 ... 0.03941 0.04382]
  ...
  [0.008347 0.008503 ... 0.01711 0.007519]
  [0.009164 0.009174 ... 0.02331 0.02256]] a.u.

  shape

  :

  (y:95, x:1607)

  Dimension x

  size

  :

  1607

  title

  :

  wavenumber

  coordinates

  :

  [ 3996 3994 ... 900.7 898.8] cm⁻¹

  Dimension y

  size

  :

  95

  title

  :

  elapsed time

  coordinates

  :

  [ 1.265 7.748 ... 602.3 608.8] s
• 5: NDDataset [background] — float64, shape: (y:1, x:4096)

  name

  :

  background

  author

  :

  runner@runnervmzvulz

  created

  :

  2026-08-16 03:11:25+00:00

  description

  :

  Dataset from opus files.
  Spectra type: Single-channel reference spectra

  history

  :

  2026-08-16 03:11:25+00:00> 2026-08-16 03:11:25.592979+00:00: import from opus files

  Data

  title

  :

  single-channel reference spectra

  values

  :

  ...

  [[ 0.01242 0.01243 ... 0.001023 0.01261]]

  shape

  :

  (y:1, x:4096)

  Dimension x

  size

  :

  4096

  title

  :

  wavenumber

  coordinates

  :

  [ 5265 5263 ... 1.286 0] cm⁻¹

  Dimension y

  size

  :

  1

  title

  :

  acquisition timestamp (GMT)

  coordinates

  :

  [1.581e+09] s

  labels

  :

  ...

  [[ 2020-02-06 12:01:55.349000+00:00]
  [ MCT D317 1mm² [8500 - 700 Cm-1]]
  [ /home/runner/.spectrochempy/testdata/irdata/OPUS/background.0]]

Loading given type of OPUS spectra

By default absortion spectra (AB) are load, if present in the file.

Opus file however can contain several types of spectra and they can be retrieved eventually using the correct type in the call to read_opus:

Types possibly availables and readables by read_opus are listed here:

• AB: Absorbance (default if present in the file)

• TR: Transmittance

• KM: Kubelka-Munk

• RAM: Raman

• EMI: Emission

• RFL: Reflectance

• LRF: log(Reflectance)

• ATR: ATR

• PAS: Photoacoustic

• RF: Single-channel reference spectra

• SM: Single-channel sample spectra

• IGRF: Reference interferogram

• IGSM: Sample interferogram

• PHRF: Reference phase

• PHSM: Sample phase

It is possible to know which are the other types availables in the original file:

Z.meta.other_data_types

['RF', 'IGRF', 'AB', 'SM', 'PHSM', 'IGSM']

Thus if one wants to load the single-channel sample spectra, the read function syntax would be:

ZSM = scp.read_opus("irdata/OPUS/test.0002", type="SM")
ZSM

NDDataset [test] — float64, shape: (y:1, x:2567)

name

:

test

author

:

runner@runnervmzvulz

created

:

2026-08-16 03:11:25+00:00

description

:

Dataset from opus files.
Spectra type: Single-channel sample spectra

history

:

2026-08-16 03:11:25+00:00> 2026-08-16 03:11:25.664729+00:00: import from opus files

Data

title

:

single-channel sample spectra

values

:

[[ 0.02253 0.02255 ... 0.0008783 0.0007268]]

shape

:

(y:1, x:2567)

Dimension `x`

size

:

2567

title

:

wavenumber

coordinates

:

[ 3998 3997 ... 700.7 699.4] cm⁻¹

Dimension `y`

size

:

1

title

:

acquisition timestamp (GMT)

coordinates

:

[1.581e+09] s

labels

:

[[ 2020-02-06 12:10:06.368000+00:00]
[ MCT D317 1mm² [8500 - 700 Cm-1]]
[ /home/runner/.spectrochempy/testdata/irdata/OPUS/test.0002]]

Reading OPUS file Metadata

As just seen above, more information can be obtained on the experiment and spectrometer parameters using the dataset metadata (meta attribute).

For instance, to get a display of all metadata:

Z.meta

OPUS Parameters

other_data_types

:

['RF', 'IGRF', 'AB', 'SM', 'PHSM', 'IGSM']

Sample/Result Parameters [params]

Optical Parameters [optical]

Accessory [acc]

:

Compartiment Echantillon #1112355F

Aperture Setting [apt]

:

1.5 mm

Beamsplitter [bms]

:

KBr

Measurement Channel [chn]

:

Sample Compartment

Detector [dtc]

:

LN-MCT Photovoltaic 1mm 8H Fast [Internal Pos.2]

High Pass Filter [hpf]

:

0

Low Pass Filter [lpf]

:

40.0

Optical Filter Setting [opf]

:

Open

Preamplifier Gain [pgn]

:

3

Extended Ready Check [rdx]

:

0

Source [src]

:

MIR

Scanner Velocity [vel]

:

120.

External Sync [son]

:

Off

Fourier Transform Parameters [fourier_transform]

Apodization Function [apf]

:

B3

End Frequency Limit for File [hfq]

:

700.0

Start Frequency Limit for File [lfq]

:

4000.0

Nonlinearity Correction [nli]

:

1

Phase Resolution [phr]

:

32.0

Phase Correction Mode [phz]

:

ML

Stored Phase Mode [spz]

:

NO

Zero Filling Factor [zff]

:

2

Acquisition Parameters [acquisition]

Additional Data Treatment [adt]

:

0

Acquisition Mode [aqm]

:

SN

Correlation Test Mode [cor]

:

0

Delay Before Measurement [del]

:

0

Stabilization Delay [dly]

:

0

Wanted High Freq Limit [hfw]

:

4000.0

Wanted Low Freq Limit [lfw]

:

400.0

Number of Sample Scans [nss]

:

32

Result Spectrum Type [plf]

:

AB

Resolution (cm-1) [res]

:

4.0

Sample Scans or Time [sot]

:

0

Command Line for Additional Data Treatment [tcl]

:

To Do List [tdl]

:

16777271

Sample Signal Gain [sgn]

:

-1

Sample Origin Parameters [sample_origin]

Building [bld]

:

Operator Name [cnm]

:

Administrator

Company [cpy]

:

Department [dpm]

:

Experiment [exp]

:

transmissionfederico.xpm

Location [lct]

:

Sample Form [sfm]

:

Energie=9700

Sample Name [snm]

:

MCT D317 1mm² [8500 - 700 Cm-1]

Experiment Path [xpp]

:

C:\Documents and Settings\fts\Bureau\LCSAGH FTIR

Instrument Status [ist]

:

OK

Character Encoding Code Page [cpg]

:

1252

Instrument Status Parameters [instrument_status]

High Folding Limit [hfl]

:

5265.987417333333

Low Folding Limit [lfl]

:

0.0

Laser Wavenumber [lwn]

:

15797.962252

Absolute Peak Pos in Laser*2 [abp]

:

52329

Sample Spacing Divisor [ssp]

:

3

Actual Signal Gain [asg]

:

4

Actual Reference Gain [arg]

:

4

Number of Sample Scans [ass]

:

32

Number of Good Forward Scans [gfw]

:

32

Number of Good Backward Scans [gbw]

:

0

Number of Bad Forward Scans [bfw]

:

0

Number of Bad Backward Scans [bbw]

:

0

Peak Amplitude [pka]

:

-5013

Peak Location [pkl]

:

562

Backward Peak Amplitude [pra]

:

1

Backward Peak Location [prl]

:

-1

Peak Amplitude Channel 2 [p2a]

:

1

Peak Location Channel 2 [p2l]

:

1

Backward Peak Amplitude Channel 2 [p2r]

:

1

Backward Peak Location Channel 2 [p2k]

:

1

Data Acquisition Status [daq]

:

0

Actual Signal Gain Channel 2 [ag2]

:

1

Relative Humidity Interferometer [hum]

:

3

Sample Spacing Multiplier [ssm]

:

1

Running Sample Number [rsn]

:

181951

Correlation Rejection Reason [crr]

:

0

Start Time (sec) [srt]

:

1580994606.3689988

Duration (sec) [dur]

:

4.053997039794922

Scanner Temperature [tsc]

:

25.8

Max Velocity Deviation [mvd]

:

1.678957223892212

Pressure Interferometer (hPa) [prs]

:

1029.99997

Analog Signal 1 [an1]

:

0.0

Analog Signal 2 [an2]

:

0.0

Firmware Version [vsn]

:

1.546 Oct 27 2011

Instrument Serial Number [srn]

:

0173

NL Alpha [nla]

:

1.0032635274973252

NL Beta [nlb]

:

-0.008074354619042486

Unknown INC [inc]

:

680.0

Unknown INE [ine]

:

0.8999999761581421

Instrument Type [ins]

:

VERTEX 80V

Focal Length [foc]

:

100.0

Ready Check [rdy]

:

1

Reference Parameters [rf_params]

Reference Instrument Status Parameters [instrument_status]

High Folding Limit [hfl]

:

5265.987417333333

Low Folding Limit [lfl]

:

0.0

Laser Wavenumber [lwn]

:

15797.962252

Absolute Peak Pos in Laser*2 [abp]

:

52329

Sample Spacing Divisor [ssp]

:

3

Actual Reference Gain [arg]

:

4

Actual Signal Gain [asg]

:

4

Number of Sample Scans [ass]

:

32

Number of Good Forward Scans [gfw]

:

32

Number of Good Backward Scans [gbw]

:

0

Number of Bad Forward Scans [bfw]

:

0

Number of Bad Backward Scans [bbw]

:

0

Peak Amplitude [pka]

:

-5274

Peak Location [pkl]

:

562

Backward Peak Amplitude [pra]

:

1

Backward Peak Location [prl]

:

-1

Peak Amplitude Channel 2 [p2a]

:

1

Peak Location Channel 2 [p2l]

:

1

Backward Peak Amplitude Channel 2 [p2r]

:

1

Backward Peak Location Channel 2 [p2k]

:

1

Data Acquisition Status [daq]

:

0

Actual Signal Gain Channel 2 [ag2]

:

1

Relative Humidity Interferometer [hum]

:

3

Sample Spacing Multiplier [ssm]

:

1

Running Sample Number [rsn]

:

1666915

Correlation Rejection Reason [crr]

:

0

Start Time (sec) [srt]

:

1580994115.349999

Duration (sec) [dur]

:

4.053997039794922

Scanner Temperature [tsc]

:

25.8

Max Velocity Deviation [mvd]

:

1.509278655052185

Pressure Interferometer (hPa) [prs]

:

1029.99997

Analog Signal 1 [an1]

:

0.1067311915111817

Analog Signal 2 [an2]

:

0.24102481595995506

Firmware Version [vsn]

:

1.546 Oct 27 2011

Instrument Serial Number [srn]

:

0173

NL Alpha [nla]

:

1.003937884834645

NL Beta [nlb]

:

-0.009290070393253367

Unknown INC [inc]

:

680.0

Unknown INE [ine]

:

0.8999999761581421

Instrument Type [ins]

:

VERTEX 80V

Focal Length [foc]

:

100.0

Ready Check [rdy]

:

1

Number of Reference Scans [ars]

:

32

Reference Optical Parameters [optical]

Accessory [acc]

:

Compartiment Echantillon #1112355F

Aperture Setting [apt]

:

1.5 mm

Beamsplitter [bms]

:

KBr

Detector [dtc]

:

LN-MCT Photovoltaic 1mm 8H Fast [Internal Pos.2]

High Pass Filter [hpf]

:

0

Low Pass Filter [lpf]

:

40.0

Optical Filter Setting [opf]

:

Open

Reference Preamplifier Gain [pgr]

:

3

Reference Measurement Channel [rch]

:

Sample Compartment

Extended Ready Check [rdx]

:

0

Source [src]

:

MIR

Scanner Velocity [vel]

:

120.

External Sync [son]

:

Off

Reference Acquisition Parameters [acquisition]

Additional Data Treatment [adt]

:

0

Acquisition Mode [aqm]

:

SN

Correlation Test Mode [cor]

:

0

Delay Before Measurement [del]

:

0

Stabilization Delay [dly]

:

0

Wanted High Freq Limit [hfw]

:

4000.0

Wanted Low Freq Limit [lfw]

:

400.0

Number of Background Scans [nsr]

:

32

Result Spectrum Type [plf]

:

AB

Resolution (cm-1) [res]

:

4.0

Reference Signal Gain [rgn]

:

-1

Scans or Time (Reference) [str]

:

0

Command Line for Additional Data Treatment [tcl]

:

To Do List [tdl]

:

16777271

Reference Fourier Transform Parameters [fourier_transform]

Apodization Function [apf]

:

B3

End Frequency Limit for File [hfq]

:

700.0

Start Frequency Limit for File [lfq]

:

4000.0

Nonlinearity Correction [nli]

:

1

Phase Resolution [phr]

:

32.0

Phase Correction Mode [phz]

:

ML

Stored Phase Mode [spz]

:

NO

Zero Filling Factor [zff]

:

2

To display only a sub-group of metadata, you can use :

Z.meta.params.fourier_transform

Fourier Transform Parameters

Apodization Function [apf]

:

B3

End Frequency Limit for File [hfq]

:

700.0

Start Frequency Limit for File [lfq]

:

4000.0

Nonlinearity Correction [nli]

:

1

Phase Resolution [phr]

:

32.0

Phase Correction Mode [phz]

:

ML

Stored Phase Mode [spz]

:

NO

Zero Filling Factor [zff]

:

2

or a single parameter:

Z.meta.params.optical.bms

Beamsplitter

value

:

KBr

Z.meta.params.optical.bms.value

'KBr'

Acting on a parameter

Metadata modification, addition, deletion are forbidden by default (readonly=True).

For instance, if one want to add a new parameters, the following is not permitted and then raise an error:

try:
    Z.meta.xxx = "forbidden"
except ValueError:
    scp.error_("meta data dictionary is read only!")

 ERROR | SpectroChemPyError: meta data dictionary is read only!

To add a new value (or to modify/delete an existing value), the readonly flag must be unset before the operation:

Z.meta.readonly = False
Z.meta.xxx = "permitted"
Z.meta

OPUS Parameters

other_data_types

:

['RF', 'IGRF', 'AB', 'SM', 'PHSM', 'IGSM']

xxx

:

permitted

Sample/Result Parameters [params]

Optical Parameters [optical]

Accessory [acc]

:

Compartiment Echantillon #1112355F

Aperture Setting [apt]

:

1.5 mm

Beamsplitter [bms]

:

KBr

Measurement Channel [chn]

:

Sample Compartment

Detector [dtc]

:

LN-MCT Photovoltaic 1mm 8H Fast [Internal Pos.2]

High Pass Filter [hpf]

:

0

Low Pass Filter [lpf]

:

40.0

Optical Filter Setting [opf]

:

Open

Preamplifier Gain [pgn]

:

3

Extended Ready Check [rdx]

:

0

Source [src]

:

MIR

Scanner Velocity [vel]

:

120.

External Sync [son]

:

Off

Fourier Transform Parameters [fourier_transform]

Apodization Function [apf]

:

B3

End Frequency Limit for File [hfq]

:

700.0

Start Frequency Limit for File [lfq]

:

4000.0

Nonlinearity Correction [nli]

:

1

Phase Resolution [phr]

:

32.0

Phase Correction Mode [phz]

:

ML

Stored Phase Mode [spz]

:

NO

Zero Filling Factor [zff]

:

2

Acquisition Parameters [acquisition]

Additional Data Treatment [adt]

:

0

Acquisition Mode [aqm]

:

SN

Correlation Test Mode [cor]

:

0

Delay Before Measurement [del]

:

0

Stabilization Delay [dly]

:

0

Wanted High Freq Limit [hfw]

:

4000.0

Wanted Low Freq Limit [lfw]

:

400.0

Number of Sample Scans [nss]

:

32

Result Spectrum Type [plf]

:

AB

Resolution (cm-1) [res]

:

4.0

Sample Scans or Time [sot]

:

0

Command Line for Additional Data Treatment [tcl]

:

To Do List [tdl]

:

16777271

Sample Signal Gain [sgn]

:

-1

Sample Origin Parameters [sample_origin]

Building [bld]

:

Operator Name [cnm]

:

Administrator

Company [cpy]

:

Department [dpm]

:

Experiment [exp]

:

transmissionfederico.xpm

Location [lct]

:

Sample Form [sfm]

:

Energie=9700

Sample Name [snm]

:

MCT D317 1mm² [8500 - 700 Cm-1]

Experiment Path [xpp]

:

C:\Documents and Settings\fts\Bureau\LCSAGH FTIR

Instrument Status [ist]

:

OK

Character Encoding Code Page [cpg]

:

1252

Instrument Status Parameters [instrument_status]

High Folding Limit [hfl]

:

5265.987417333333

Low Folding Limit [lfl]

:

0.0

Laser Wavenumber [lwn]

:

15797.962252

Absolute Peak Pos in Laser*2 [abp]

:

52329

Sample Spacing Divisor [ssp]

:

3

Actual Signal Gain [asg]

:

4

Actual Reference Gain [arg]

:

4

Number of Sample Scans [ass]

:

32

Number of Good Forward Scans [gfw]

:

32

Number of Good Backward Scans [gbw]

:

0

Number of Bad Forward Scans [bfw]

:

0

Number of Bad Backward Scans [bbw]

:

0

Peak Amplitude [pka]

:

-5013

Peak Location [pkl]

:

562

Backward Peak Amplitude [pra]

:

1

Backward Peak Location [prl]

:

-1

Peak Amplitude Channel 2 [p2a]

:

1

Peak Location Channel 2 [p2l]

:

1

Backward Peak Amplitude Channel 2 [p2r]

:

1

Backward Peak Location Channel 2 [p2k]

:

1

Data Acquisition Status [daq]

:

0

Actual Signal Gain Channel 2 [ag2]

:

1

Relative Humidity Interferometer [hum]

:

3

Sample Spacing Multiplier [ssm]

:

1

Running Sample Number [rsn]

:

181951

Correlation Rejection Reason [crr]

:

0

Start Time (sec) [srt]

:

1580994606.3689988

Duration (sec) [dur]

:

4.053997039794922

Scanner Temperature [tsc]

:

25.8

Max Velocity Deviation [mvd]

:

1.678957223892212

Pressure Interferometer (hPa) [prs]

:

1029.99997

Analog Signal 1 [an1]

:

0.0

Analog Signal 2 [an2]

:

0.0

Firmware Version [vsn]

:

1.546 Oct 27 2011

Instrument Serial Number [srn]

:

0173

NL Alpha [nla]

:

1.0032635274973252

NL Beta [nlb]

:

-0.008074354619042486

Unknown INC [inc]

:

680.0

Unknown INE [ine]

:

0.8999999761581421

Instrument Type [ins]

:

VERTEX 80V

Focal Length [foc]

:

100.0

Ready Check [rdy]

:

1

Reference Parameters [rf_params]

Reference Instrument Status Parameters [instrument_status]

High Folding Limit [hfl]

:

5265.987417333333

Low Folding Limit [lfl]

:

0.0

Laser Wavenumber [lwn]

:

15797.962252

Absolute Peak Pos in Laser*2 [abp]

:

52329

Sample Spacing Divisor [ssp]

:

3

Actual Reference Gain [arg]

:

4

Actual Signal Gain [asg]

:

4

Number of Sample Scans [ass]

:

32

Number of Good Forward Scans [gfw]

:

32

Number of Good Backward Scans [gbw]

:

0

Number of Bad Forward Scans [bfw]

:

0

Number of Bad Backward Scans [bbw]

:

0

Peak Amplitude [pka]

:

-5274

Peak Location [pkl]

:

562

Backward Peak Amplitude [pra]

:

1

Backward Peak Location [prl]

:

-1

Peak Amplitude Channel 2 [p2a]

:

1

Peak Location Channel 2 [p2l]

:

1

Backward Peak Amplitude Channel 2 [p2r]

:

1

Backward Peak Location Channel 2 [p2k]

:

1

Data Acquisition Status [daq]

:

0

Actual Signal Gain Channel 2 [ag2]

:

1

Relative Humidity Interferometer [hum]

:

3

Sample Spacing Multiplier [ssm]

:

1

Running Sample Number [rsn]

:

1666915

Correlation Rejection Reason [crr]

:

0

Start Time (sec) [srt]

:

1580994115.349999

Duration (sec) [dur]

:

4.053997039794922

Scanner Temperature [tsc]

:

25.8

Max Velocity Deviation [mvd]

:

1.509278655052185

Pressure Interferometer (hPa) [prs]

:

1029.99997

Analog Signal 1 [an1]

:

0.1067311915111817

Analog Signal 2 [an2]

:

0.24102481595995506

Firmware Version [vsn]

:

1.546 Oct 27 2011

Instrument Serial Number [srn]

:

0173

NL Alpha [nla]

:

1.003937884834645

NL Beta [nlb]

:

-0.009290070393253367

Unknown INC [inc]

:

680.0

Unknown INE [ine]

:

0.8999999761581421

Instrument Type [ins]

:

VERTEX 80V

Focal Length [foc]

:

100.0

Ready Check [rdy]

:

1

Number of Reference Scans [ars]

:

32

Reference Optical Parameters [optical]

Accessory [acc]

:

Compartiment Echantillon #1112355F

Aperture Setting [apt]

:

1.5 mm

Beamsplitter [bms]

:

KBr

Detector [dtc]

:

LN-MCT Photovoltaic 1mm 8H Fast [Internal Pos.2]

High Pass Filter [hpf]

:

0

Low Pass Filter [lpf]

:

40.0

Optical Filter Setting [opf]

:

Open

Reference Preamplifier Gain [pgr]

:

3

Reference Measurement Channel [rch]

:

Sample Compartment

Extended Ready Check [rdx]

:

0

Source [src]

:

MIR

Scanner Velocity [vel]

:

120.

External Sync [son]

:

Off

Reference Acquisition Parameters [acquisition]

Additional Data Treatment [adt]

:

0

Acquisition Mode [aqm]

:

SN

Correlation Test Mode [cor]

:

0

Delay Before Measurement [del]

:

0

Stabilization Delay [dly]

:

0

Wanted High Freq Limit [hfw]

:

4000.0

Wanted Low Freq Limit [lfw]

:

400.0

Number of Background Scans [nsr]

:

32

Result Spectrum Type [plf]

:

AB

Resolution (cm-1) [res]

:

4.0

Reference Signal Gain [rgn]

:

-1

Scans or Time (Reference) [str]

:

0

Command Line for Additional Data Treatment [tcl]

:

To Do List [tdl]

:

16777271

Reference Fourier Transform Parameters [fourier_transform]

Apodization Function [apf]

:

B3

End Frequency Limit for File [hfq]

:

700.0

Start Frequency Limit for File [lfq]

:

4000.0

Nonlinearity Correction [nli]

:

1

Phase Resolution [phr]

:

32.0

Phase Correction Mode [phz]

:

ML

Stored Phase Mode [spz]

:

NO

Zero Filling Factor [zff]

:

2

It is advised to set back the readonly flag to True.