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LDS1000
EDH0170FE1010 – 09/98
7.4.1.2
Modification of Current Sensor Parameters
Each NEWPORT sensor is delivered with a calibration certificate which
enables the correct programming parameters for the LDS1000 Controller to
be established.
This certificate gives the values of the following parameters:
S/N: Series number of the optical head.
A number is allocated to each sensor. It means it can be identified and its
progress can be monitored.
Type: Y axis horizontal (TR) or vertical (RT).
This indication specifies the type of measurements carried out by the sen-
sor. Thus RT, for rotation designates an autocollimator. This value is used
by some programs for a correct display.
Ycoef, Zcoef: Linear correction factor for the axis Y or Z.
The sensor can be calibrated on a measuring bench. The given value of
Ycoef or Zcoef minimizes linear errors in the direction concerned. It is a
multiplying factor of the display.
Yincr, Zincr: Counter increment for the axis Y or Z.
The resolution of each sensor is limited by physical factors (electronic
noise, enlargement, etc.). The value of Yincr or Zincr given is adapted to
the sensor delivered. It is a multiplying factor of the display.
Different measurement limits correspond to each increment value:
0.1
-199.99 ...
0.2
-399.98 ...
0.5
-999.95 ...
1
-1999.9
2
-3999.8
Yunit, Zunit: Unit displayed for the axis Y or Z.
It is the unit for which the sensor parameters are established.
Yofs1, Yofs2, Zofs1, Zofs2: Electric offset values.
These values enable the sensor resolution to be refined while taking into
account a possible offset reading. The correct values are achieved in
mode.
In
mode the values of the parameters stored for the current sensor
can be modified. As a precaution, a confirmation message asks whether
you really want to modify the current sensor (and specifies the number):
Controller for Laser Diode Sensors
=>
(F4) =>
+199.99
5
+399.98
10
+999.95
20
...
+1999.9
50
...
+3999.8
20
(F1) =>
(F1)
-9999.5
...
+9999.5
-19999
... +19999
-39998
... +39998
-99995
... +99995
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