This can occur with high performance cameras or multi-camera scenarios which are producing pictures with a higher bandwith than the communication link is able to transfer (GigE Vision, USB3 Vision). Cameras transfers empty pictures as soon as a bottleneck is detected. This can be observed with the flickering effect on freerun pictures  in CVB and watching the Data Stream Port statistic values. Exposure time adaption, Framerate decreasing to a value matching the transfer capabilities and optimizing the network configuration for GigE hardware should solve the problem.

For GigE Vision make sure the IP addresses of both the camera and the NIC the camera is connected to, are on the same subnet,if you have multiple NIC's in the system make sure they don’t share the same subnet's. Otherwise this can result in unpredictable behavior. Refer GigE Vision checklist.

Genicamapp

To set a new XML file, run the EditBindings console application. With this console application you can see the current linked *.xml file and you can add/delete/bind a new XML file. For future access to the device, the XML file is saved within a database on the host machine and loaded automatically whenever the camera is connected. Camera xml files for Common Vision Blox are saved under %CVBDATA%GenICam\xml\Registry\Files (Windows) and /var/opt/cvb/GenICam/xml (Linux). It is possible that an XML file is changed over time by the vendor to simplify the interface, while the firmware remains the same. It then suffices to set the new XML file with the CVB EditBindings application since the internal functionality remains the same. In case a new revision of camera firmware is published, it is generally distributed by STEMMER IMAGING with further remarks about the changes made as well as the installation procedure. If you don't find an appropriate update please contact our technical support.

Note, by the way, that the "Vision" bit in "GigE Vision" and "USB3 Vision" has lower-level implications as it defines the expected format of the packets sent back and forth on the physical infrastructure.

GenICaminterface

The VinBuffer nodemap provides means to gather information about a single buffer returned by the stream wait function. It is - also - only available in the 3rd generation acquisition stack (GenTL).

Compared to manufacturer specific SDKs Common Vision Blox with GenICam offers manufacturer independence and increased image acquisition functionality. Hardware compatibility is accomplished by supporting various acquisition technologies including any GenICam GenTL provider (transport layer). Being the GenICam GenTL standard maintainers we can assure best support for compliant GenTL providers.

A GenICam device is always equipped with a certain version of firmware. Every firmware revision has a dedicated XML file to describe the abilities and features of the device. When opening a camera its XML file is going to be read when the device is plugged in for the first time. The downloaded structure serves as the base for the property grid (Nodemap). Â

If the device has no *.xml file in its memory a "Nodemap unavailable" message is returned when the device is opened. Be aware that setting a correct XML file for the device is a precondition, if there are problems, refer trouble shooting section.

This is the port, which contains the nodemap for the Data Stream module. A single (image) data stream from the device is represented by the Data Stream module. The purpose of this module is to provide the acquisition engine and to maintain the internal buffer pool. Beside that the Data Stream module also presents Signaling and module configuration capabilities.

GenICamCamera

Action Control allows sending "action signals" over ethernet to one or multiple devices in the network to trigger specific configured actions in the device.

If the device has no XML file in its memory "Nodemap unavailable" message is returned when a device is opened. Be aware that setting a correct XML file for the device is a precondition - so it has to be (re)generated. Availability, version and binding information of a camera GenICam XML-file can be checked with the EditBindings application. Sometimes it could be necessary to backup and delete the GenIcam XML file and directory manually: %CVBDATA%GenICam and start the application again. Â

or that grey images with a grey value of 128 appear from time to time. Additional there appears a red text overlay in the display which says " Common Vision Blox evaluation".

GenICamsoftware

General Advice: You should check to see if your microscope has a rack stop. If it does not have one, then be careful not to allow the objective lens to touch the slide as you may break the slide. When using a monocular microscope, the correct technique is to look through the eyepiece with one eye and keep the other eye open. Most new users, tend to close one eye. While many microscopists do close one eye, you will help avoid eye strain by keeping both eyes open. Finally, remember! When you view a specimen through a microscope, you are viewing an image through multiple lenses. As a result, the image is upside down and back-to-front so when you move the slide to the right, the image moves to the left and vice versa!Care & Maintenance of Your Microscope: Your compound microscope will last a lifetime if cared for properly and we recommend that you observe the following basic steps:

GenICamC++

Change the Display Engine type from OpenGL to Raster. Display Engine can be changed only if no device is open. If the selection is disabled, all devices must be closed.

This problem may occur mainly on cameras with high data rate. Check the hardware components and configuration if they inter-work with the camera configuration and capability. Please refer the corresponding chapters in this User Guide for optimization.

For USB3 Vision please ensure that USB 3.0 ports are used and all other hardware requirements are fulfilled. Refer USB3 checklist. Seldom it could be necessary to delete the GenIcam XML file and directory manually: %CVBDATA%GenICam and start the application again. For all other vision hardware components (cameras, grabber) ensure that the necessary software and driver is installed.

Information about all supported Transport Layers (*.cti files) can be found in the GenICam Browser in the Available Devices window. In this example the STEMMER IMAGING CVB USB3 Vision (CVUSBTL) and the GigE Vision Transport Layer (GEVTL) are available.

This user nodemap aims to configure the device and its corresponding driver settings. A user can read and adjust parameters of a device opened through CVB in the 3rd acquisition stack (GenTL) only. The nodemap includes features related to TurboDrive and chunk data transmission.

If something is GenICam compliant does it need to be GigE Vision Compliant? The camera is not seen in the GenICam Browser I can open the camera in the GenICam Browser but get a white picture I can open the camera in the GenICam Browser but get a flickering picture Image contains a logo or is complete grey Error message: Nodemap unavailable I get a large number of lost frames The acquired images show defects I can acquire images but the GigEVision events from the camera are not fired GigE Cameras disappear in the GenICam Browser Occasionally Time Out errors when performing image acquisition with Software Trigger How can I discard corrupt frames in the driver? How can I find the installed transport layer ?

Familiarization  First, familiarize yourself with all the parts of a microscope so that you can easily move from one part to another during operation. Moving and Placement: It is worth remembering that while a good quality microscope will last a lifetime, it is a sensitive scientific instrument that will suffer damage from sharp blows or impact. Always, therefore, carry your microscope in both hands. Grasp the arm with one hand and place the other hand under the base for support. Always place the microscope on a level and stable surface.Slide Preparation: Microscope slides should always be prepared with a cover slip or cover glass over the specimen. This will help protect the objective lenses if they touch the slide. To hold the slide on the stage fasten it with the stage clips. You can push down on the back end of the stage clip to open it.Focusing the Microscope:

The system was already working and without changing anything the GigE camera does not appear any more in the GenICam Browser. But it is possible to PING the camera. Means IP configuration and camera is OK. Solution: Please delete the following file in the CVB Root path ..\Genicam\Registry\xml\db.xml Restart the CVB GenICam Browser and you should see the GigE camera again connected.

This is the port which contains the NodeMap for the system module. For every GenTL Consumer the system module as the root of the hierarchy is the entry point to a GenTL Producer software driver. It represents the whole system (not global, just the whole system of the GenTL Producer driver) on the host side from the GenTL libraries point of view. The main task of the system module is to enumerate and instantiate available interfaces covered by the implementation. The system module also provides signaling capability and configuration of the module's internal functionality.

GenICamBrowser

GenICam is frequently called the compatibility layer. A device which is GigE Vision compliant must by definition also be GenICam compliant since GigE Vision and USB3 Vision has a mandatory reference to GenICam. So in a way the use of the GenICam layer is what distinguishes GigE Vision and USB3 Vision from plain GigE/USB3. The reverse, however, is not the case: GenICam may in principle also be applied to other transport technologies.

GenICamdownload

If the cameras are not licensed via CameraSuite or any other valid Image Manager license like a dongle, a Node-locked or Triallicense there are sent some kind of distorted images. This could be either a logo as a watermark in the left top part of the image:

By default corrupt frames are passed thrue the driver. You can disable pass corrupt frames with the DataStream Nodemap of the driver. In the NodeMaps section you can read how to access the DataStream Nodemap. There is also an example in C++ how to discard corrupt frames.

Unlike previous nodemaps, such as DeviceTL nodemap, the VinDevice nodemap and VinBuffer nodemap are not displayed in the property grid, even though they are available for all GenICam-compliant cameras. These parameters can be individually tuned by users, enabling them to customize camera settings to their liking.

In this document you will find detailed background information about the GenICam standard, transport layers and the CVB driver structure.

Here is an example of how you might use the VinDevice to check the activation of TurboDrive and VinBuffer nodemap to check for indication of a corrupt buffer:

Check the hardware components and configuration if they inter-work with the camera configuration and capability. Most problems are caused due to unsatisfactory performance.

GenICamPython

A nodemap displayed in the Property Grid is part of the Transport Layer and therefore available for all  GenICam compliant cameras. Nodemaps are based on the acquisition hardware *.xml file and structured in different ports:

The GenICam driver options are described in the section Persistent Settings in GenICam Driver and should be set by your code. If you are using the deprecated vin driver, you can also set the option with the GenICam Browser (for further information about the deprecated vin driver got to the online documentation of CVB 14.0).

‍Attention: With Common Vision Blox 13.3 the GenICam.vin driver interface has been extended by the new GenTL acquisition interface. This document will only describe the new GenTL interface. If you are still using the GenICam.vin, you will find a detailed description online documentation of CVB 14.0.

This is the port, which contains the nodemap for the device (remote device). It is the normal nodemap for all device features and is used by default.

This is the port, which contains the nodemap for the device module of the GenTL. The device module represents the GenTL Producers' proxy for one physical remote device. The responsibility of the device module is to enable the communication with the remote device and to enumerate and instantiate data stream modules. The device module also presents signaling- and module configuration capabilities.

Maybe you see black lines or lines with old image data. Check the hardware components and configuration if they inter-work with the camera configuration and capability. Please refer the corresponding chapters in this User Guide for optimization.

The GenICam™ standard (Generic Interface for Cameras) provides a generic software interface for any kind of vision acquisition devices, independent of their hardware interface. It allows access to devices such as cameras or strobe controllers via a standardised interface, no matter which technology such as GigE Vision, CameraLink, CameraLink HS, CoaXPress or USB3 Vision-is used.

JavaScript seems to be disabled in your browser. For the best experience on our site, be sure to turn on Javascript in your browser.

If sections of the acquired images are missing or random noise is visible, the reason is probably a transmission problem. The following image shows an example of this type of transmission problems:

This is the port which contains the NodeMap for the interface module. An interface module represents one physical interface in the system. For Ethernet based Transport Layer technologies this would be a Network Interface Card (NIC), for a Camera Link based implementation this would be one frame grabber board. The enumeration and instantiation of available devices on this interface is the main role of this module. The interface module also presents signaling and module configuration capabilities.