Gentec-EO M-LINK - Manual (Page 22)

M- LINK User’s Manual Revision 3.0 16
2.2.6 The Noise Suppression
The M-LINK has a special proprietary algorithm that can lower the noise induced error when reading low
level energy, or energy readings of any level with noise present. This feature greatly reduces the effect of
noise on the peak to peak measurement in Joulemeter or Radiometer mode. To activate this special
function, select the number of sampling size that you want to use. M-LINK will need to measure the
number of pulse selected in the Sampling Size before the algorithm will settle to the noise suppressed
value. Once the readings have stabilized, any subsequent reading will be stable until the Sampling Size is
changed. The system will then stabilize to the new value. Larger Sampling Sizes will result in more noise
suppression. To see the stabilizing effect, start the statistics and restart the batch while watching the RMS
or PTP Stability until you have a stable reading. Noise suppression works best using the external trigger.
This function will greatly improve the accuracy of the lowest scale or in any scale when used in a noisy
environment.
You can also use the NULL function with Noise Suppression to improve the accuracy
For example:
Connect the external trigger of your laser to the M-LINK. Block the Laser beam. Select the Noise
Suppression. Start the statistics until the reading is stable. Make a Null, this will cancel the average noise
offset. Unblock the laser beam. Make the measurement with the noise suppression.