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Operation
confocalDT 24x1
5.3.5
Exposure Mode / Measuring Rate
To select the exposure mode click Settings > Exposure mode/Measuring rate.
confocal
DT
2451
Exposure mode / measuring rate
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Measurement
Video signal
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Preferences > Exposure modes / measuring rate
Exposure mode:
manual
Measuring rate:
6.2 kHz
Measurement rate / kHz:
Exposure time
: 0.1 µs ... 1 / Meaurement rate
Measurement rate
: 0.1 kHz ... 10 khz
In order to ensure that each measurement object can be measured with the maximum
possible measuring rate, the measuring rate and then the exposure time of the
adjustment is changed. The following basically applies: Maximum scope of adjustment,
slowest version (default).
Automatic mode
Save Setup
Exposure
mode/
Measuring
rate
Exposure mode
Automatic mode / Measurement mode / Manual
mode / Alternating two time mode / Automatic
two time mode
Measuring rate (IFC2451)
0.1 / 0.2 / 0.3 / 1 / 2.5 / 5 / 10 kHz / manual
Measuring rate (IFC2461)
0.1 / 0.2 / 0.3 / 1 / 2.5 / 5 / 10 / 25 kHz / manual
Measuring rate
(IFC2471LED)
0.1 / 1 / 2.5 / 5 / 10 / 25 / 50 / 70 kHz / manual
Measuring rate (IFC2471)
0.3 / 1 / 2.5 / 5 / 10 / 25 / 50 / 70 kHz / manual
Exposure time 1 in µs
Value (0.1 µs and 10.000 µs IFC2451)
Value (0.1 µs and 10.000 µs IFC2461)
Value (0.1 µs and 3333.3 µs IFC2471/2471LED)
Exposure time 2
(shorter) in µs
Value (smaller than Exposure time 1)
Select the required exposure mode.
Automatic mode
. Defines the exposure time and automatically sets the relevant mea-
suring rate to ensure that the maximum measuring rate is used for each target. The
following principles apply: maximum control range, lowest measuring rate (standard
setting). Lasts 1 up to a maximum of 7 measurement cycles (change from no target too
good reflective target).
Measurement mode
. Maintains the required or suitable measuring rate, and adjusts only
the exposure time. A smaller control range is used to achieve faster results. This mode
also enables the user to work with targets with different reflections that have the same
measuring rates. Lasts 1 up to a maximum of 7 measurement cycles (change from no
target too good reflective target with 0.1 kHz measuring rate).
Manual mode
. No automatic adjustments. Set (optimized) values are maintained. This
makes sense for fast changes due to targets with identical surfaces moving in and out or
for highly dynamic movements (no overshoots). It is not recommended to use this mode
for strongly varying target surfaces. Manual mode can also be used for several layers if
the brightest peak should not be captured. The video signal display can acquire suitable
measuring rates and exposure times from automatic mode.
Automatic two time mode
. Fastest mode with two manually preset exposure times.
The more suitable time is automatically selected. We recommend using this mode to
measure distances for fast changing surface properties, such as mirrored or anti-glare
glass.
