Panasonic HL-C2 Series, User Manual, Page: 127 / 278

Chapter 4 Explanation of Functions
4-53
4
4-3-3
Common Setting
■ Sampling Period
This function sets the sampling cycle of measurement.
When measuring an object with poor received light intensity such as black
rubber, extend the sampling cycle to get sufficient light for performing stable
measurement.
Cycle [ µs] Frequency Measurement range Meas. object
10 µs 100KHz Differs depending on
product type
20 µs 50KHz
40 µs
100 µs
200 µs
400 µs
1ms
2ms
25KHz
10KHz
5KHz
2.5KHz
1KHz
500Hz
All in the
measurement range
*The measurement range may become narrow depending on measurement object
type.
・
When the sampling cycle is set to 10 µs or 20 µs, the measurement range is
limited.
・
When the sampling cycle is set to 10 μs or 20 μs, the functions of median filter
are limited.
As for the functions of median filter, refer to “4-3-1 Head Setting” – ‘Median Filter’.
In case of HL-C203B
In case of setting the installation mode to “diffuse reflection”, the measurement
range is 3.8 to 5.0[mm] for the sampling cycle 10 µs, 0 to 5.0[mm] for the 20µs,
or ±5mm for the other cycles. For the setting range for each product type, refer to
“8-2 Sensor Head Specifications” .
・
If the sampling cycle is changed, the data unfixed status occurs because the
sampling sequence is executed again. When the data becomes unfixed, the strobe
output is set to “OFF”, and after the data become fixed, the strobe output is set to
“ON” and the measurement data display starts.
・
The resolution of the received light intensity waveform is also limited.
Ex
Bright
B
ri
ght
nes
s
of
obj
ec
t
Dark