Calibration; Noise Reduction - Newport LDS1000 User Manual

LDS1000
EDH0170FE1010 – 09/98
4.2.1

Calibration

A reading of the linear errors according to the angle measured is provided
with each sensor. This calibration certificate gives, in particular, the value
of the principal parameters to be used to configure the LDS1000 electronic
controller:
• S/N: Series number of the optical head.
• Type: RT (Rotation) for LDS-Vector or TR (Translation) for STR500-H.
X: Beam Axis; Y: Horizontal Axis; Z: Vertical Axis.
– Type RT (Rotation):
Y: Rotation around Y axis.
Z: Rotation around Z axis.
– Type TR (Translation):
Y: Parallel translation with Y axis.
Z: Parallel translation with Z axis.
• Ycoef: Linear correction factor for axis Y.
• Yincr: Count increments for axis Y.
• Yunit: Unit displayed for axis Y.
• Yofs1, Yofs2: Channel Y electronic offsets.
• Zcoef: Linear correction factor for axis Z.
• Zincr: Count increments for axis Z.
• Zunit: Unit displayed for axis Z.
• Zofs1, Zofs2: Channel Z electronic offsets.
These parameters were optimized when the instrument was calibrated in
order to obtain the best results. You are advised not to modify them
without reason.
These parameters have been defined for the following conditions of use:
• Temperature
• Mirror diameter
• Reflectivity
• Working distance
4.3

Noise Reduction

The LDS1000 Controller constantly carries out acquisitions at a rate of 2000
values per second.
These acquisitions are dealt with on request (transformation of electric
signals into metrological values) for display or emission on a connection.
Depending on the programming of the electronic controller, the returned
value corresponds either to the last acquisition carried out (no average) or
to the average of the last N acquisitions.
Controller for Laser Diode Sensors
AT TE
NT ION
RA YO
EN CA NN EM
EX PO S D'O EN T LA
UV ER SE R
SIT ION TU RE
DA NG
AU FA ER EU
ISC EA SE
U
22 °C ±2 °C
>31 mm
80% at 670 nm
0.1 m
8
+ Z
+ Y
+ X
+ Y
+ Z