SHIMPO ST-5000 - Manual (Page 4)

LCD Sub-Menu: Adjust the Contrast on the LCD by spinning the
scroll wheel up and down.
Utilizing the Stroboscope Mode as a Tachometer
If you are unable to obtain a reading of your process with the
Tachometer Mode function of the ST-5000, you can utilize the
Stroboscope function as a Tachometer and still measure the true
revolutions per minute (RPM). When the flash rate is the same as
the object RPM, the moving object will appear to be stationary.
Note, you will also see the same stopped image at flash rate 1/2,
1/3, 1/4 etc. of actual RPM, while at a flash rate twice the actual
speed of the image you will see two images. To confirm the true
speed, change the flash rate (x2, x3…) by using x2/2 mode and
verify the view looks like the picture in the next column.
CONTRAST: 26
LCD
STROBE TACH SET *1
Procedure for utilizing Stroboscope function as Tachometer to ob-
tain true RPM speed of process.
1. Mark the object to be measured by either visually noting an
inherent distinguishing character, such as a label, scratch,
etc., or physically mark the object with a pen, tape or similar.
2. Turn on Power
3. Put into STROBE mode and adjust RPM on display to highest
setting
4. Adjust the Flash Rate Value (RPM) downward
5. The true revolutions per minute (RPM) can be noted once the
action appears frozen and the first single image of the mark ap-
pears (see chart and diagram below for further explanation)
6. To verify the revolution (RPM) reading, adjust the rate to half
the rate found in #6. If the image is again static after dividing
the rate in half, the RPM found in #5 is confirmed.
MAINTENANCE
Other than cleaning exterior with cloth, no maintenance can be
performed on product. Do not attempt to take unit apart with the
exception to battery cover. Damage to unit or laser may result.