Used to fine adjust the strobe light frequency in steps of 1/60
Hz. Tap (+) to increase frequency, and tap (–) to decrease fre-
quency.
Used to double or half the strobe light frequency. Tap (x2) to
double frequency, and tap (/2) to halve frequency.
Used to open screen to manually enter machine RPM.
Used to open screen to measure machine speed with the laser
trigger sensor.
When the stroboscope is turned on a default speed of 3000 RPM (50 Hz) is shown on the
screen.
Direct the strobe light to the rotating object then adjust the strobe light frequency until the
object appears to be stationary. This frequency corresponds to the speed of the object.
Stroboscope principles
Reference points such as fan blades, coupling bolts, shaft keyways help to measure speed of
the object. If object to be measured does not have a reference point, then the object can be
marked with colour or a tape provided the machine can be stopped and is not too hot.
If the frequency of the strobe light corresponds to the speed of the object, then the object is
viewed as a still image. If the strobe light frequency is then double (tap x2). If the frequency is
halved (tap /2) a single image is seen.
For a shaft with a single keyway, a still image of the keyway is seen if the strobe light fre-
quency is 1/2, 1/3, 1/4, etc. of the RPM.
72 Version:1.0
On-board help
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