The OAV B-ZOOM is an On-Axis Video-microscope with a hybrid zoom system used for parallax free observation of micrometer sized crystals. It is optimized for MX crystallography beamlines and high throughput stations in Synchrotrons.

The OAV B-ZOOM is the next evolution of the OAV Ultra-Zoom: it combines the EMBL patented Objective Head of the OAV with a new zooming and visualization module, allowing instant zoom change and integrating a multi-camera video server.

Installation & Module configuration

Follow the generic instructions in Build and Install. If using CMake directly, add the following flag:


For the Tango server installation, refers to PyTango Device Server.

Initialisation and Capabilities

Implementing a new plugin for new detector is driven by the LIMA framework but the developer has some freedoms to choose which standard and specific features will be made available. This section is supposed to give you good knowledge regarding camera features within the LIMA framework.

Camera initialisation

The camera will be initialized by creating a :cpp:Arinax::Camera object. The contructor sets the camera with default parameters, only the ip address or hostname of the camera is mandatory.

Std capabilities

This plugin has been implemented in respect of the mandatory capabilites but with some limitations which are due to the camera and SDK features. Only restriction on capabilites are documented here.

  • HwDetInfo

    getCurrImageType/getDefImageType(): it can change if the video mode change (see HwVideo capability).

    setCurrImageType(): It only supports Bpp8.

  • HwSync

    get/setTrigMode(): the only supported mode are IntTrig.

Optional capabilities

In addition to the standard capabilities, we make the choice to implement some optional capabilities which are supported by the SDK. Video and Binning are available.

  • HwVideo

    The arinax bzoom is a pure video devicexs, video formats for image are supported:
    • RGB24

    • BGR24

    Use get/setMode() methods of the cpp::class::Video object (i.e. CtControl::video()) to read or set the format.

  • HwBin

    There is no restriction for the binning up to the maximum size.


For the hardware and network installation refer to the Arinax documentation.

How to use

This is a python code example for a simple test:

from Lima import Arinax
from lima import Core

cam = Arinax.Camera("bzoom")

hwint = Arinax.Interface(cam)
ct = Core.CtControl(hwint)

acq = ct.acquisition()

# set video  and test video
video_img = video.getLastImage()

# set and test acquisition

# setting new file parameters and autosaving mode



# wait for last image (#9) ready
lastimg = ct.getStatus().ImageCounters.LastImageReady
while lastimg !=9:
  lastimg = ct.getStatus().ImageCounters.LastImageReady

# read the first image
im0 = ct.ReadImage(0)