Describe the bug

I recently got a .eeg file from a hospital, but I cannot read it by MNE-python. I noticed that the version (EEG-1200A V01.00) is not supported at this moment.
Can anyone help with this problem?

Steps to reproduce

import matplotlib
import pathlib
import mne

sample_data_dir = mne.datasets.sample.data_path()
raw_path = sample_data_dir / 'MEG' / 'sample' / 'FA0015AA.EEG'
raw = mne.io.read_raw_nihon(raw_path)
print(raw.info)
raw.plot()

Expected results

The .EEG data should be loaded.

Actual results

Loading FA0015AA.EEG
Reading header from C:\Users\Surface\mne_data\MNE-sample-data\MEG\sample\FA0015AA.EEG
Traceback (most recent call last):
  File "C:\Users\Surface\PycharmProjects\mne_plot\plot_test.py", line 13, in <module>
    raw = mne.io.read_raw_nihon(raw_path)
  File "C:\Users\Surface\PycharmProjects\mne_plot\venv\lib\site-packages\mne\io\nihon\nihon.py", line 46, in read_raw_nihon
    return RawNihon(fname, preload, verbose)
  File "<decorator-gen-243>", line 24, in __init__
  File "C:\Users\Surface\PycharmProjects\mne_plot\venv\lib\site-packages\mne\io\nihon\nihon.py", line 316, in __init__
    header = _read_nihon_header(fname)
  File "C:\Users\Surface\PycharmProjects\mne_plot\venv\lib\site-packages\mne\io\nihon\nihon.py", line 136, in _read_nihon_header
    raise ValueError(
ValueError: Not a valid Nihon Kohden EEG file (EEG-1200A V01.00)

Process finished with exit code 1

Additional information

• Platform: Windows-10-10.0.19041-SP0

• Python: 3.8.8 (default, Apr 13 2021, 15:08:03) [MSC v.1916 64 bit (AMD64)]

• Executable: c:\users\surface\anaconda3\python.exe

• CPU: Intel64 Family 6 Model 126 Stepping 5, GenuineIntel: 8 cores

• Memory: 15.6 GB

• mne: 0.23.0

• numpy: 1.20.1 {blas=mkl_rt, lapack=mkl_rt}

• scipy: 1.6.2

• matplotlib: 3.3.4 {backend=Qt5Agg}

• sklearn: 0.24.1

• numba: 0.53.1

• nibabel: 3.2.1

• nilearn: Not found

• dipy: Not found

• cupy: Not found

• pandas: 1.2.4

• mayavi: 4.7.3

• pyvista: Not found

• vtk: 9.0.1

• PyQt5: 5.15.4