Resources

Chronos 2.1-HD

Data Sheet

Mechanical Drawing

3D Model

User Manual

Flange Focal Distance

The Chronos 2.1-HD camera is our second-generation camera, which we launched in 2019. And this high-speed camera is our current bestseller!

The reason why it has surpassed our original Chronos 1.4 camera in popularity is because our 2.1-HD boasts an enhanced image/video resolution and a larger sensor. This larger sensor makes the camera compatible with regular DSLR lenses (Nikon, Canon, etc.).

Our Chronos 2.1-HD High Speed camera is mainly used for:

  • Higher-budget scientific projects
  • Cinema
  • Professional content (for example, created by marketing agencies)
  • Sports events
Chronos 2.1-HD main pic

This slow-motion, high-speed camera’s main features:

  • 2.1Gpx/s, Full HD 1920x1080 image sensor captures 1 000 fps, and up to 24 046 fps at lower resolution.
  • Available in color and monochrome.
  • 8GB, 16GB, and 32GB memory options for 2.5, 5.5, and 11 second record time respectively.
  • High sensitivity base ISO of 500 (Color) and 1000 (Monochrome) enables shooting with modest lighting.
  • Completely standalone, untethered operation with 1hr internal battery. Runs indefinitely on an AC adapter.
  • Many lenses supported: Nikon F, Canon EF, and C mounts available as field-swappable options.
  • Focus peaking highlights sharp edges for quick and perfect focus. Zebra lines help you set correct exposure.

See full specifications in the Chronos 2.1-HD Datasheet and Chronos 2.1-HD User Manual.

New Features and Improvements

  • Our update server is up and running again. Cameras can update over the internet again.
  • Improvements while saving
    • Save speed has been increased by up to ~30%
    • Stability while saving has been greatly improved
  • Trigger/IO screen improvements
    • Clarified some settings with "toggle" mode on the Trigger/IO screen. Now it specifies that it's only for buttons/switches and settings that should not be changed can't be changed when using this trigger function
    • Trigger/IO screen now has a link to the trigger delay screen, and it will offer a reminder when using triggers if the trigger delay is changed from default (in case it was set accidentally)
  • The 'Disable Ring Buffer' setting is now saved after the camera reboots
  • Webpage improvements:
    • Webpage has “zero-time” black calibration support (accessible from the menu at the top of the page). This feature allows for a fast black calibration to take place without the need to physically cover the image sensor.
    • Option for 'Digital Gain' added to the Main Screen / Homepage.
    • Some Chronos 2.1 color matrix options added to the webpage (for that camera).
  • Miscellaneous bug fixes:
    • 'Black Cal All’ doesn't crash the camera if certain specific trigger modes are used, nor will it set the trigger delay.
    • H.264 (mp4) files will not overwrite a previous file if a filename is provided (instead, it gives a warning that the filename was already used).
  • Chronos 2.1 image quality:
    • A previous software upgrade introduced a horizontal "shadow" when some areas were overexposed. This has been greatly reduced in v0.7.0
    • Pink/magenta shift (especially in bright areas) reduced overall
  • DNG metadata updated:
    • All cameras formerly saved DNG images with metadata that indicated they were Chronos 1.4s, but this has been fixed. Chronos 2.1 cameras now say "Chronos 2.1" and Chronos 1.4 cameras still say "Chronos 1.4".
    • Color matrix settings are saved to DNG images now. Before, color matrix parameters in DNG files were always the same and ignored the camera's settings, but now the settings on the camera get saved in DNG files.

Known Issues

  • If the camera is being controlled via the web page, no messages will be shown on the back-of-camera display if the video output mode is changed between LIVE/RECORDING and PLAYBACK through the web interface.
  • If the camera is powered on while connected to 10/100 (non-gigabit) network equipment, the back-of-camera display will fail to start.
  • When using Live Record Mode to simultaneously record 60 FPS mp4 footage to an external storage device, the video display may momentarily blank or freeze while the stream is being written to the storage device. This will not affect the high-speed recording.
  • Trying to navigate through a device after physically removing it (without properly removing it via the “Safely Remove” option) using the file browser can cause a crash
  • Using both the “rotate” and “left side” display settings at the same time may not work reliably, and might require selecting these settings twice
  • When saving extremely long videos (a full-buffer of very high frame rates, such as 32,667 FPS and above) as H.264 (mp4) videos, the camera’s video encoder core can lock up (crash). For best reliability at very high frame rates, we suggest saving as CinemaDNG images instead, or saving shorter segments of the videos. In the event of a crash, a frame-by-frame recovery tool is available as long as the camera is left on.
  • A blank/black screen will be displayed if certain combinations of higher frame rates and higher analog gain levels are used.
    • Specific common resolutions where this will occur:
      • 1024 x N at 24dB
      • 800 x N at or above 18dB
      • 640 x N at or above 18dB

Upgrading and Calibrating your Camera

Follow the instructions from this file.

Need help with setting up a RNDIS driver with your Chronos camera?

Our team has created a guide to help you out: Chronos RNDIS Driver Installation Guide.

Need help with setting up Samba shares with your Chronos camera?

Our team has created a guide to help you out: Chronos SMB Share Setup Guide.

Gone are the days the Chronos camera can only be triggered remotely via a signal or BNC switch. Our team is now offering network control for the Chronos camera!

The users will be able to control parameters such as frame rate, resolution, shutter speed, save format, recording modes, triggers and much more through the web interface we have designed. The camera can also be triggered via your own API. The possibility to live stream a video at 60 fps is also available!

For more details on how to set up the camera for network control, refer to these Network Control instructions.

Advanced documentation about the API of the Web Interface provided: WebAPI-Docs

Using a SSD with the Chronos camera can be annoying to carry. Our team has worked on making files available in order for our users to 3D print a SSD cage to facilitate their life.

This accessory is invaluable when shooting DNG on the go; save speed is vastly improved compared to an SD card. The camera can write about 60MB/s to a SATA SSD instead of ~12MB/s to most SD cards. DNG saves at about 12FPS on the 2.1-HD and about 18FPS on the 1.4, at full resolution.

We plan to offer this for sale in our store eventually, but you can 3D print one right now! The attached models have been updated from the pictures shown, the SD card opening was widened so you can easily grab an SD card with your fingers instead of needing pliers to remove it.

We're in the process of ordering custom versions of the eSATAp cables that have a short cable length to avoid the need to coil up the extra cable.

Items you'll need

3D Printer to print the SSD cage (see attached files)

 

Our team has created some sample codes to assist you for using the Chronos camera with Matlab. Please visit our Github at https://github.com/krontech/chronos-examples/tree/master/matlab.

If you would like to see more examples, please email us at info@krontech.ca with your ideas, we would love to hear from you!

Our team has created some sample codes to assist you for using the Chronos camera with LatbView. Please visit our Github at https://github.com/krontech/chronos-examples/tree/master/labview.

If you would like to see more examples, please email us at info@krontech.ca with your ideas, we would love to hear from you!

This tutorial will show you how to use your external trigger cable to end a recording from a distance. This is useful when the camera is in a hard to reach or dangerous place where it would not be ideal to go near the device.

For more information refer to this link.

The original IR filter of the Chronos 2.1-HD camera has the dimension 24x16x1.1mm.

This text tutorial will show you the easy steps to replace or remove the IR filter. Click here

If a software update fails or the camera becomes un-bootable for any reason, you can restore the software yourself without needing to send the camera in for service.

1. Download and install Win32DiskImager.
​2. Download the Chronos 1.4 V0.1 microSD card image.
3. Remove the Operation System (OS) microSD card from the camera.
This card is located at the top right of the ratings label on the bottom of the camera
Use an SD card, the 2mm allen key shipped with the camera, or another thin object to push and release the card, then pull it out.
4. Insert the card into a card reader attached to your computer
5. Open Win32DiskImager
6. Click on the blue folder icon under Image File and select the file downloaded in step 2
7. In the box to the right, select the drive letter that the microSD card appears as. This drive will have the volume label BOOT.
WARNING - Make sure you have selected the correct drive. If you select another drive, it will be permanently erased! It's recommended to remove all other removable storage devices before doing this.
8. Click Write to start the process
9. Once the writing is complete, close Win32DiskImager
10. Eject the microSD card, the drive's volume label will again be BOOT
11. Insert the card back into the camera
12. The camera should now boot properly, but the image will have vertical lines due to missing calibration. Calibration is not included with the image file as it is specific to each camera.
13. If you have backed up your calibration data, place that file onto the root directory of a FAT32 formatted USB drive. If you have not backed up the data, email support@krontech.ca to request your calibration data, make sure to include your camera's serial number.
14. Go to the Util menu, then tap Restore Calibration data.
15. Change the resolution (to any value, even the same) or restart the camera to use the restored calibration.
16. Install the latest software update.

New Features and Improvements

  • Chronos 2.1 models benefit from an improved sensor driver configuration. The analog gain values of the LUX2100 sensor have been modified to reduce noise at higher levels of analog gain (also referred to as ISO), such as 6dB, 12dB, and 18dB. This translates to less vertical banding than in prior software versions. Adequate lighting is still highly recommended.

Note: Please download the video to desktop to ensure quality is not lost to online streamming compression. The most significant improvements can be seen along the left and right sides of the frame, and especially at 12dB.

  • Chronos 2.1 models no longer require special factory calibration files. All calibrations required to use the camera with the best possible image quality can be performed by a customer in the field within 5 minutes via the Util -> Factory -> Column Gain Calibration function.
  • Chronos 2.1 models benefit from newly generated Color Matrix presets, as found in White Bal -> Color Matrix. Previous software versions had color matrices that were optimal for the LUX1310 sensor in the Chronos 1.4, instead of the LUX2100 sensor found in the Chronos 2.1.
  • A list of saved files on external media can now be browsed via Util -> Storage -> List Files. The same functionality exists to make it easier for users to select the save destination in Play -> Settings -> Pick Folder. The file browser also allows for users to delete files on external storage devices. This functionality is mirrored in the web page.
  • Monochrome cameras can no longer open Color Matrix settings. This was mistakenly enabled in 0.5.0.
  • Frame counts are no longer cut-off on the right-hand side of the display when in the Play screen when frame counts are six-digits long.

Known Issues:

  • If the camera is being controlled via the web page, no messages will be shown on the back-of-camera display if the video output mode is changed between LIVE/RECORDING and PLAYBACK through the web interface.
  • If the camera is powered on while connected to 10/100 (non-gigabit) network
    equipment, the back-of-camera display will fail to start.
  • When using Live Record Mode to simultaneously record 60 FPS MP4 footage to an external storage device, the video display may momentarily blank or freeze while the stream is being written to the storage device. This will not affect the high-speed recording.
  • Saving speed to external devices may be slower than in software versions 0.3.2 or older.
  • A blank/black screen will be displayed if certain combinations of higher frame rates and higher analog gain levels are used.

Specific common resolutions where this will occur:

  • 1024 x 768 at or above 18dB
  • 1024 x 576 at or above 18dB
  • 800 x N at or above 12dB
  • 640 x N at or above 12dB

Specific common resolutions where this will occur:

Follow the instructions from this file.

New Features and Improvements

  • [Chronos 2.1 Only] Update to LUX2100 Image Sensor driver to increase the voltage on an analog input to handle vertical banding in variants of sensor batches.
  • Updated software to correctly propagate status of disableRingBuffer API parameter.

Known Issues:

  • [Chronos 2.1 Only] The driver modification will cause black-levels to become distorted. Please perform a Black Calibration on each resolution that you intend to use to account for this.
  • [Chronos 2.1 Only] The white balance may be affected by this update. Please configure your white balance as needed.

There are two methods to update to Version 0.5.1. Please ensure that you have an AC adapter connected to the camera, and your calibration settings are backed up before proceeding with the update procedure.

During this update, the power controller will also be updated, which will cause the power status indicator LED on the top of the camera to blink green and red while the fan runs at 100% momentarily. Do not interrupt or power down the camera while this is taking place..

Method 1 - for cameras on version 0.4.0+

Cameras using Version 0.4.0 may be updated via the internet. Calibration data does not need to be restored using this method.

  1. Connect your Chronos to the internet via the ethernet port.
  2. Navigate to Util->Storage, then tap Apply Software Update -> Check for Updates

Approximately 15 packages will be upgraded, and then the camera will reboot automatically. This procedure will take approximately 3 minutes.

Method 2 - for cameras on any software version

Cameras using Versions 0.2.x and 0.3.x require a reflash of the microSD card in the bottom of the camera.

  1. Download the software update package here: https://debian.krontech.ca/builds/chronos-voyager-20200806.img.xz
  2. Use Balena Etcher to write the software to a microSD card. This is recommended as it verifies the integrity of the data written to the microSD card.

For additional information on update procedures, please see this forum post: https://forum.krontech.ca/index.php?topic=531.0

New Features and Improvements

  • New Graphical User Interface with Dark and Light Modes
  • Ability to set preferred exposure units on the main screen
  • Double-tap video display area to zoom
  • Ability to record live footage to H.264 mp4 @ 60 FPS in parallel with high-speed recordings, including audio from the built-in microphone or line-in jack
  • Automatic input detection and switching between the microphone and line-in jack when recording audio in Live Record Mode
  • Toggle Trigger Mode to allow BNC trigger to both START and STOP a recording
  • Ability to configure most camera settings via the web page
  • Ability to configure Triggers and I/O configuration via the web page
  • Power Manager firmware update allowing for a longer button press (up to 3 sec.) to boot the camera
  • Power Manager firmware update to perform graceful shutdown when the battery is critically low
  • General bug fixes and stability improvements

There are two methods to update to Version 0.5.0. Please ensure that you have an AC adapter connected to the camera, and your calibration settings are backed up before proceeding with the update procedure.

During this update, the power controller will also be updated, which will cause the power status indicator LED on the top of the camera to blink green and red while the fan runs at 100% momentarily. Do not interrupt or power down the camera while this is taking place..

Method 1 - for cameras on version 0.4.0+

Cameras using Version 0.4.0 may be updated via the internet. Calibration data does not need to be restored using this method.

  1. Connect your Chronos to the internet via the ethernet port.
  2. Navigate to Util->Storage, then tap Apply Software Update -> Check for Updates

Approximately 15 packages will be upgraded, and then the camera will reboot automatically. This procedure will take approximately 3 minutes.

Method 2 - for cameras on any software version

Cameras using Versions 0.2.x and 0.3.x require a reflash of the microSD card in the bottom of the camera.

  1. Download the software update package here: https://debian.krontech.ca/builds/chronos-voyager-20200806.img.xz
  2. Use Balena Etcher to write the software to a microSD card. This is recommended as it verifies the integrity of the data written to the microSD card.

For additional information on update procedures, please see this forum post: https://forum.krontech.ca/index.php?topic=531.0

The major focus of this release is to enable networking capabilities of the camera, and a new GUI to choose from. Under the hood, we have also replaced the operating system of the camera and will now be using an embedded build of the Debian operating system. This is the software that we are currently shipping on our Chronos 2.1 cameras, and is now also available for users of the Chronos 1.4.

Notable Changes:
- Support for the LUX2100 image sensor.
- API for camera control via JSON/HTTP over the Ethernet port.
* Examples: https://github.com/krontech/chronos-examples
- Saving of media over network to an NFS and Samba share.
- Software updates can be downloaded over the internet.
- Real-time video stream from the camera using RTSP.
- New back-of-camera GUI is available via the software update screen.
* For more information: https://forum.krontech.ca/index.php?topic=498

Fixed Bugs:
- Improved accuracy of overlay timestamps in frame trigger and shutter gating.

Minutae:
- Internal D-Bus and Python APIs for camera control.
- Move software update and GUI selection into a standalone tool.
- Add the ability to switch between GUIs via the software update too.
- Add Support for exposure trigger and shutter gating to IO3 (isolated).
- Reogranized the trigger/IO settings window to make IO1 and IO2 consistent.
- Allow specifying folders and complex paths in the save settings.

Installation instructions:

The most up-to-date instructions can be found in the chronos-updates respository on GitHub, but we have done our best to transcribe them here for you. The update procedure shown here should be familiar to anyone who has used a embedded Debian system such as the Beaglebone or Raspberry Pi.

Since this update requires a complete replacement of the operating system, we currently only offer this upgrade by completely replacing the contents of the microSD card. We are working on a more user friendly upgrade procedure that will hopefully be available in the next couple of weeks using the v0.3.2 software update procedure.

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