Store White and Dark references

In Breeze, the default option is to always take a new white and dark reference before a new measurement is recorded.

In some applications this is not possible therefore Breeze can cache both a white and dark reference and re-use them to be used for multiple recordings.

Start by opening Breeze and go into settings to connect to your camera Hardware guides. When the camera is connected go to “References” in the menu to the left.

In “Measurement” you will find “Reference valid time” where you can select how long your White or Dark

Breeze caches and re-uses references for the duration you specified, and stores references per integration time. This means that there will be many different references cached for each integration time you have used, and for all cameras in the system. Breeze saves up to 50 references before it will overwrite the oldest references.

For example: If you store references for 8 hours, and take a white reference for the integration time 1000 it will be re-used for that integration time for 8 hours before it expires and has to be retaken. However, if you change integration time to 1100 after 4 hours and capture a new reference it will be cached for 8 hours from that point. If you immediately switch back to integration time 1000 it will continue to re-use the previously saved reference.

Dark reference should only be stored if your camera doesn’t have an automatic shutter.

If the camera is placed in a environment where the surrounding illumination changes a lot the time the white reference needs to be retaken more often.

After you have set the valid time you can either take the references or import an old reference.

To ensure the reference is correct, it is recommended to take a new reference instead of importing an old one.

You can examine the current references by pressing “View”

If you’re not satisfied with the reference you can press “Clear”

Do the necessary changes before pressing take again.

When the new White or Dark reference is taken you can see a timer starting to count down

When the time hits zero it's time to scan the reference again.

If you are about to record a new image and the valid time has run out you will get a message before you scan that a new White or Dark reference will be taken