EDH0170FE1010 – 09/98 22
LDS1000 Controller for Laser Diode Sensors
7.4.1.3 Display of Result in Arc-Seconds (LDS-Vector)
=> (F4) => (F1) => (F1)
The calibration certificate gives the values Ycoef, Zcoef, Yincr and Zincr for
result display in µrad. In general, Yincr and Zincr are equal to 1. The resolu-
tion of the display is then 0.1 µrad.
To display the result in arc-sec:
1 arc-sec = 4.85 µrad
1 µrad = 0.2062 arc-sec
Thus: Y µrad = (0.20 x1.0309 xY) arc-sec
Thus we will use the increments Yincr = 0.2 and Zincr = 0.2. That gives dis-
play limits of -400 to + 400.
The values Ycoef and Zcoef are corrected by 1.0309:
Ycoef
1
= Ycoef x1.0309 (rounded to the nearest unit).
Zcoef
1
= Zcoef x1.0309 (rounded to the nearest unit).
The unit sec will be chosen.
You are advised not to delete the initial parameters, in µrad. You only need
to program a new sensor number.
7.4.1.4 Programming a New Sensor
When an LDS-Vector autocollimator is delivered with its electronic control-
ler, the sensor parameters are fed into the memory of the controller. The
number 0 is used for the current sensor.
The other memories are normally empty, and the values of the parameters
are therefore equal to the default values.
To program a new sensor, a spare place must be found, generally recogni-
zable when S/N = 000000. You can choose to delete an existing sensor.
Access to the mode that enables rapid visualization of the various heads is
obtained by the sequence:
=> (F4) => (F1) => (F3)
It is then possible to modify the number of the current sensor:
(F2)Previous number (-1).
(F3)Next number (+1).
(F4)Visualization of parameters of the sensor envisaged.
(F5)Save the new configuration.
Programming the new sensor is done by the menu (see modification
of sensor parameters).
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