4. P A N E L E X P L A N A T I O N
4 - 1 F r o n t panel
® P O W E R O N - — - / O F F J B L S w i t c h
The P O W E R O N / O F F s w i t c h is provided to
apply power to t h i s counter. If p r e s s e d ( _ • * . ) ,
the counter w i l l be turned on. If pressed again
( J H L ) , the counter w i l l be turned o f f .
© G A T E Indicator ( L E D )
(3)
k H z / ^ s Indicator ( L E D )
The k H z / ^ s L E D indicator is provided to
remind the user of the current measurement
d a t a unit.
T h i s L E D indicates the unit of the current
measurement operation. T h i s L E D remains
active a s long a s the measurement unit is not
changed w i t h the measurement unit select s w i t c h
(not pressed).
If the frequency measurement mode or the self-
check mode is a c t i v a t e d , t h i s indicator means
t h a t the measurement value is output in kiloherz.
The L E D indicates t h a t the measurement value
is displayed in microseconds if a period or time
interval is being measured. T h i s L E D indicator
becomes inactive when the frequency r a t i o meas-
urement mode or the event t o t a l count measure-
ment mode has been s t a r t e d up.
© M H z / m s Indicator ( L E D )
The M H z / m s L E D indicator is provided to
remind the user of the current measurement
d a t a unit. T h i s L E D becomes a c t i v e a s long
as the measurement unit is changed w i t h the
measurement unit select s w i t c h (pressed ) .
If the frequency measurement mode or the self-
check mode is a c t i v a t e d , t h i s indicator means
t h a t the measurement value is output in m e g a -
herz. The L E D indicates t h a t the measurement
value is displayed in milliseconds if a period or
time interval is being measured.
T h i s L E D indicator becomes inactive when the
frequency r a t i o measurement mode or the event
t o t a l count measurement mode has been
s t a r t e d up.
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