© PCE Instruments
5
5.2
Set flash frequency
5.2.1
Quick adjustment
Use the X 2 and ÷2 keys to quickly change the flash frequency.
"X 2" doubles the currently set flash frequency.
Example based on flash frequency 100/min:
100
→
X 2
→
200
→
X 2
→
400
"÷2 " halves the currently set flash frequency.
Example based on flash frequency 400/min:
400
→
÷ 2
→
200
→
÷ 2
→
100
5.2.2
Moderate adjustment
Use the + / - rotary switch at the rear side for moderate flash frequency adjustment.
Turning to the right increases the flash frequency and turning to the left decreases the flash
frequency.
When turning slowly, only the last digit of the flash frequency is changed. When turning faster,
the tens or hundreds of the flash frequency are changed.
5.2.3
Fine-tuning
Use the "+" and "-" keys for fine adjustment.
Per keystroke, the last digit of the flash frequency is changed by the value 1.
Holding the key changes the tens or hundreds of the flash frequency.
5.3
Rotational speed measurement
•
Place a unique mark on the object to be measured and switch on the machine.
•
Switch on the stroboscope via the switch on the back.
•
Use the "Int / Ext Signal" key to select the Internal option.
•
Aim the light cone at the object to be measured.
•
Set a flash frequency that is above the expected speed of the object to be measured.
•
Change the flash frequency as described in chapter 5.2 until the mark shows a single
standing image. If 2, 3 or more standing marks are visible, reduce the flash frequency
until only one standing mark is visible.
•
To check, double the flash frequency with the "X 2" key. Now you should see 2
opposite markings. Double the flash frequency again with the "X 2" key. Now you
should see 4 standing marks in a cross arrangement.
