Monarch Instrument Nova-Strobe BBL - Manual (Page 8)

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2.0 PREPARATION FOR USE
The Stroboscope may be hand held or mounted on a tripod or other user
supplied bracket using the ¼-20 UNC bushing at the base of the handle.
The LED Strobe is battery powered and has internal rechargeable batteries.
The unit should be charged before use (see section 5.0). The actual operating
time of the stroboscope depends on the flash pulse width. Narrower flash
widths increase the operating time. Note that the BBL strobe will not operate
from the recharger supplied with the unit.
To turn on the stroboscope, depress and hold the trigger. The trigger may be
locked in position using the side locking button. To lock the stroboscope on,
depress the trigger as far as it will go and then press the locking button. Once
the locking button is set you may release the trigger and the trigger will be
held in place. To unlock the stroboscope, simply depress the trigger and then
release.
NOTE: Unit must power down completely (OFF will be displayed and
then disappear) before unit will power on again. This is normal
operation. Wait 2 seconds before turning the unit back on again.
3.0 LED STROBE OPERATION
3.1 Adjusting the Flash Rate - RPM
The flash rate can be adjusted by turning the knob on the side of the
unit – counter clockwise to increase the flash rate and clockwise to
decrease the flash rate. The knob is rate sensitive, the faster you turn the
knob the greater the change in flash rate. The smallest adjustment is to
add or subtract one from the least significant (right most) digit on the
display.
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3.1.1 Multiply or Divide By 2
The strobe flash rate can be instantly doubled (x2) or
halved (÷2) by pressing the
x2 and ÷2 buttons shown
right. This is useful in determining actual rotational
speed. Refer to the section on speed measurement –
Section 4.0. Note that if doubling or halving the flash
rate will cause the strobe to exceed its capability, the
display will show OVER or UNDER respectively and the flash
rate will remain at the current flash value.
3.2 Adjusting the Flash Duration (Brightness)
The flash duration, the width of the LED flash, can be adjusted by the
user to be a preset number of degrees of rotation (DEGS) or a fixed
with in microseconds (uSEC). The result is a more or less bright image
at the expense of less or more image blur. Read the section on Brightness
- Section 1.1.
3.2.1 Flash Duration - Degrees
To view or adjust the flash duration press the BRIGHT
button shown on the right. The display will show the
current flash duration in degrees of rotation – note that
there are 360° in a complete rotation. The
degrees shown is the amount of rotation visible
during the flash. The higher the degrees the
brighter the image and the more apparent the
blur. Use the knob to increase or decrease the flash duration in
degrees of rotation. Adjusting the degrees will cause this to be the
controlling parameter for pulse width. As the flash rate increases
or decreases the strobe will adjust the flash duration to keep it at
the preset number of degrees provided this does not exceed the
strobe specifications. Press any key other than
BRIGHT to exit or
press BRIGHT again to go to MICROSECOND adjustment.
1 11 11 .....22222
DEGS DEGS DEGS DEGS DEGS