Kenwood FC-757, Инструкция по эксплуатации, Страница: 12 / 40

© R E S E T S w i t c h
The R E S E T s w i t c h is provided to clear the
counter into 0. T h i s s w i t c h c a n w o r k , independ-
ently of any operation mode selected by F U N C
s w i t c h © .
If t h i s s w i t c h is pressed the counter w i l l
be reset to 0.
If t h i s s w i t c h is released, a new measurement
cycle w i l l be s t a r t e d .
© H O L D S w i t c h
The H O L D s w i t c h is provided to perform
v a r i o u s operations shown below. Note t h a t the
H O L D s w i t c h functions depend on operational
modes selected by F U N C s w i t c h © .
a . • In the operation modes other than the event
t o t a l count measurement mode ( T O T A L / A ) :
If t h i s s w i t c h is pressed ( t h e current
measurement value indicated by the display
L E D s is 'held' and the counter is reset.
If pressed again ( J B - ) , a new measurement
w i l l be s t a r t e d .
The d i s p l a y value being ' h e l d ' is not updated
u n t i l the new measurement is complete.
b. E v e n t t o t a l counter ( T O T A L / A ) mode :
If t h i s s w i t c h is pressed ) , the current
measurement value indicated by the display
L E D s is 'held' and the event t o t a l count is
t e r m i n a t e d . If pressed again ( J H L ) , a new
counting operation w i l l be s t a r t e d . Note t h a t
the T T L level of the gate input signal to the
T O T A L I Z E I N P U T / S T O P input j u c k © should be
High or the t e r m i n a l should be left 'open'
before the new counting operation is s t a r t e d .
© M H z / m s
( j n L
) / k H z / j « s ( J B . ) S w i t c h
( H e r e a f t e r , t h i s s w i t c h is explained a s the
' d i s p l a y unit select' s w i t c h . )
If t h i s s w i t c h is pressed ( _ • • _ ) in the frequency
measurement mode or the self-check operation
mode, the measurement value w i l l be displayed
in megaherz, in the period or t i m e i n t e r v a l
measurement mode, the measurement value w i l l
be displayed in milliseconds.
If t h i s s w i t c h is pressed again (ML), the meas-
urement d a t a w i l l be displayed in kiloherz or
microseconds.
12