7
Each time the
button is pressed the blinking digit moves one
position to the right, the decade decreases by 10 until the digits stop
blinking. Pressing the
button again will cause the left most digit
to start blinking.
To exit the decade adjustment mode while a digit is blinking press
any key other than the
button.
3.1.4 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.
3.1.5 Fixed Increment N Adjustment
The strobe flash rate can be incremented or decremented
in fixed increments. To do this, adjust the flash rate to the
required adjustment value, say 300, which we will refer to
as N. Then press the
±N
button shown right (Note: – N is
the displayed value at the time the button is pressed). The display will
show
ALT
in the bottom left hand corner which indicates the knob is
in the ALTernate function mode. Turning the knob counterclockwise
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