5
4.1 Internal Mode
The strobe is in the Internal Mode when nothing is plugged into the input
jack. In the internal mode the strobe generates its own timing signals
and the user can adjust the fl ash rate as described below.
4.1.1 Adjusting the Flash Rate - RPM
The fl ash rate can be adjusted by pressing the large UP/DOWN
button. Pressing the UP end of the button ▲ will increase the fl ash
rate and pressing the DOWN end of the button ▼ will decrease the
fl ash rate. The fl ash rate can be adjusted in decades by pressing the
LEFT ◄ or RIGHT ► buttons which will change which digit is
adjusted. The active digit will blink. As the fl ash rate is increased
or decreased, the active digit will roll over to the next signifi cant
digit. The LEFT and RIGHT digit selection will wrap around as
shown below.
4.1.2 Doubling or Halving the Flash Rate
The strobe fl ash rate can be instantly doubled (x2) or halved (÷2)
by pressing the MENU button. The lower display will show X2/2.
Pressing the UP/DOWN button will double ▲ or halve ▼ the fl ash
rate. This is useful in determining actual rotational speed – refer to
the section on speed measurement – Section 7. Note that if doubling
or halving the fl ash rate will cause the strobe to exceed its capability,
the unit will be limited to the highest or lowest value it can generate
respectively. To exit this mode, press the LEFT ◄ button.
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