Monarch Instrument Nova-Strobe PBL - Manual (Page 9)

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The strobe automatically adjusts these values as the fl ash rate is
increased or decreased to maintain these limits at all times. For
example - at a fl ash rate of 600 fl ashes per minute 14° of blur
represents a fl ash pulse width of 3800 µsec. The Strobe will limit
this value to 3000 µsec or 10.8° of rotation (blur).
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.
2.1 Power
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 fl ash pulse
width. Narrower fl ash widths increase the operating time. Note that the
DBL strobe will not operate from the recharger supplied with the unit.
The PBL will run continuously from the supplied AC powered charger
(PSC-PBXU).
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.