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(5)
If H O L D s w i t c h
©
measurement, the current measurement value on
the Display is held a s it is.
If pressed again, a new measurement cycle w i l l
be s t a r t e d . However, the measurement value
currently being displayed w i l l remain unchanged
until the new measurement cycle is complete.
T h a t is, the display value being held by the H O L D
switch is updated by the output value f r o m the
new measurement operation.
(6)
If R E S E T s w i t c h
©
measurement, the measurement value on the
Display w i l l be reset to ' 0 ' .
If the s w i t c h is released, a new measurement
cycle w i l l be s t a r t e d . However, the measurement
value w i l l remain ' 0 ' until the new cycle is
complete.
(7)
A T T x 10 switch ® and L P F switch
helpless in the prescale input mode.
5 - 2
Period
Measurement
In the period measurement mode, the cycle time of
each input signal is measured.
The cycle time f i n a l l y output by the counter is the
is pressed during frequency
is pressed during frequency
©
are
average of a l l the cycles measured. The number of
cycles to be measured can be 1, 10, 100 or 1000.
The m a x i m u m input frequency is 3=5MHz.
(1)
Input a target signal ( t o be measured) to the
C H A N N E L A input juck.
(2)
Select the P E R / 0 . 3 u s (period)
s w i t c h
@ .
The k H z / ^ s L E D w i l l turn on indicating t h a t the
measurement value is displayed in microseconds.
(3)
Select a desired display resolution value w i t h
G A T E s w i t c h
@ . T h i s G A T E s w i t c h is used to
specify the number of cycles per cycle measurement.
A s already explained, the f i n a l cycle time output
is the average of a l l the cycle times. The display
resolution L E D s ( f r o m the l e f t ) indicates 1, 10,
100 and 1000.
(4)
The average cycle time of a l l the periods measured
is output to Display
G A T E L E D ®
blinks during the period
The measurement value on the display w i l l be
updated a t the moment when one period
is complete (when the G A T E L E D turns o f f ) . The
G A T E L E D blinking may not be confirmed because
mode w i t h
F U N C
© .
measurement.
measurement
19
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