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Operation
confocalDT 24x1
Alternating two time mode
. Operating mode with two manually preset exposure
times that are used alternately. Suitable for two very different high peaks when measu-
ring thickness. We recommend using this mode in particular, if the smaller peak disap-
pears or the higher peak overshoots. A possible set video averaging is ignored here.
Select the required measuring rate.
-
IFC2471: 0.3 kHz; 1 kHz; 2.5 kHz; 5 kHz; 10 kHz; 25 kHz; 50 kHz and 70 kHz;
-
IFC2471LED: 0.1 kHz; 1 kHz; 2.5 kHz; 5 kHz; 10 kHz; 25 kHz; 50 kHz and 70 kHz;
-
IFC2461: 0.1 kHz; 0.2 kHz; 0.3 kHz; 1 kHz; 2.5 kHz; 5 kHz, 10 kHz, 25 kHz
-
IFC2451: 0.1 kHz; 0.2 kHz; 0.3 kHz; 1 kHz; 2.5 kHz; 5 kHz; 10 kHz.
Select
manual
to set the measuring rate with 100 Hz step size.
The applicable range of values for the current exposure time is displayed underneath the
selection list.
Click
Submit
to confirm your selection.
When selecting the measuring rate, take the video signal into consideration (see chap-
Step-by-Step procedures
:
Place the target in the midrange, see
. Keep adjusting the measuring rate
until you get a high signal intensity that is not oversaturated.
100 %
50
0
Sensor
SMR
Target
Measuring range (MR)
SMR Midrange
EMR
Displacement
Signal
Fig. 27 Defining measuring range and output signal
To do this, observe the
Intensity
LED.
Red
Yellow
Green
Signal in saturation
Signal too low
Signal ok
-
If the
Intensity
LED changes to red, reduce exposure time or increase the measur-
ing rate.
-
If the
Intensity
LED changes to yellow, increase exposure time or reduce the
measuring rate.
Choose a measuring rate that makes the
Intensity
LED light up green.
If necessary, change to
manual mode
.
Use the required measuring rate, and adjust the exposure time. Or let the exposure
time define possible measuring rates.
If the signal is low (
Intensity
LED is orange) or saturated (
Intensity
LED is red), the
sensor will carry out measurements, but measuring accuracy might not correspond to
the specified technical data.