mitutoyo 501s Manuel D’Utilisation

To monitor with an oscilloscope, use the two monitor connectors provided on the rear 

panel of the display unit, “SCAN SIG.-1” and “SCAN SIG.-2”, for measuring unit 1 and 
measuring unit 2, respectively. 

Oscilloscope setting: 

 Vertical sensitivity : 0.1V/DIV for a probe of 1/10 
 Horizontal sensitivity : 50

μs/DIV 

 
Among the waveforms shown below, (a) represents the waveform of normal light 

reception. If the light incidence is not normal to the light reception element, adjust the 
mounting position between the emission unit and the reception unit to ensure that the light 
comes to the center of the light reception element.

 

If the protective glass is soiled, a waveform such as that shown in (b) or (c) will result. If 

this is the case, clean the protective glass according to 1.3.2 Cleaning optical parts to 
reduce the disorder of the waveform to less than 0.3V. 

 
 
 
 
 
 

Approx. 

Approx. 

310μＳ

 

4V

 

(c) Glass contaminated

 

(b) Glass contaminated

 

(a) Normal