Monarch Instrument Pocket LED Strobe - Manual (Page 7)

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whenever there is a plug in the input jack. When the strobe is in
the External Input Mode, EXT will be displayed.
When an external input is applied to the unit and the strobe is put
in the Tachometer Mode, the unit will read the signal from the
external input (sensor) and display the reading on the LCD display
without fl ashing the lamp. When there is a valid external signal the
on target indicator
will turn on. The strobe will not fl ash in
the Tach (Tachometer) Mode. To exit the External mode, remove
the device from the input jack.
1.1.3 Charging Mode
The Charging Mode is when the strobe has the battery recharger
plugged into it. The strobe will not operate while charging. The
status of the charge is indicated by the LED on the charger.
While charging the LED on the charger is RED; when the charge
is complete the LED will turn GREEN. USE ONLY THE
CHARGER SUPPLIED WITH THE STROBE - Model LBC-U.
1.2 Brightness
GLOSSARY:
LED – Light Emitting Diode
° = degree. One rotation = 360°
msec – millisecond = 1/1,000 of a second
µsec – microsecond = 1/1,000,000 of a second
The strobe’s brightness depends on how wide the LED fl ash pulse is;
the wider the pulse, the brighter the visual output from the LEDs. Since
the strobe is primarily used on reciprocating or rotating targets, there is
a downside to the wider fl ashes. All strobes work by giving short bursts
of light (the pulse width) at a rapid repetition rate (the fl ash rate). Strobes
rely on the persistence of the human eye (the ability to remember and
image) and its response to bright light to give an apparent stopped motion