hexagon logo
Register Sign in
  • Replies 3 replies
  • Subscribers 16 subscribers
  • Views 50 views
  • Users 0 members are here
Options
Related

White light sensor settings

MihaelR
Hi,

Yesterday the Optiv machine gave very strange values with the white light sensor. It recently gave me some problems with making surface points. The white light did not measure it, so I went on and changed the 'set detection treshold' value, which was on 205, to 80. I saved this setup and it worked perfectly well for a day, but then it started to give me strange values such as 0.4 out of tol for the flatness. My frequency is set on 320 Hz.

I would love to hear a solution for this, as I have to wait a week for the troubleshooter and the machine cannot be used in the meanwhile.

Mihael
Parents
  • The “set detect.threshold” is a setting in the optical sensor, not in PC-DMIS. We have a “CHRocodile S” made by Precitec. I was told by the Hexagon service engineer not to change any settings, so I never touch it. I don’t even feel comfortable scrolling through the menus, so I don’t know what our setting is.

    According to the manual, the range of settings is 0 to 999. Quoting the manual:

    If the distance to a surface with low reflectivity is measured, the intensity of the reflected light can be too low and the measurement rate must be reduced.
    For a measurement rate under 1 kHz, a threshold of 40 is recommended. This prevents measurement values of too low an intensity, which rise only slightly above the noise, which would falsify the measurement. At a measurement rate of 1 kHz and higher, a threshold of 15 is expedient in fully exploiting the device’s dynamics.

    In PC-DMIS the “SENSOR FREQUENCY” is set to 1000 in most of our programs.
Reply
  • The “set detect.threshold” is a setting in the optical sensor, not in PC-DMIS. We have a “CHRocodile S” made by Precitec. I was told by the Hexagon service engineer not to change any settings, so I never touch it. I don’t even feel comfortable scrolling through the menus, so I don’t know what our setting is.

    According to the manual, the range of settings is 0 to 999. Quoting the manual:

    If the distance to a surface with low reflectivity is measured, the intensity of the reflected light can be too low and the measurement rate must be reduced.
    For a measurement rate under 1 kHz, a threshold of 40 is recommended. This prevents measurement values of too low an intensity, which rise only slightly above the noise, which would falsify the measurement. At a measurement rate of 1 kHz and higher, a threshold of 15 is expedient in fully exploiting the device’s dynamics.

    In PC-DMIS the “SENSOR FREQUENCY” is set to 1000 in most of our programs.
Children
No Data
© 2024 Hexagon AB and/or its subsidiaries. Privacy Policy | Cloud Services Agreement