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1.
G E N E R A L
The FC-757 is a universal counter. It can be used to
measure frequencies (175MHz M a x . ) , period, frequency
r a t i o , t o t a l number, and time
can be also counted w i t h the
Channel A is an input channel
resistor of
1.2MO
and used to measure the frequencies
between 5Hz and 175MHz, period and the t o t a l
of event
inputs.
Channel B is an input channel terminated
resistor of
1.2MI2
and used to measure frequency
and time
i n t e r v a l .
The signals in the range f r o m
5Hz to 2 M H z can be input.
The FC-757 universal counter has an 8-digit high-
brightness L E D display.
is 0.1Hz.
The FC-757 is a highly functional
counter w i t h the f o l l o w i n g functions.
- Period measurement
The period
measurement function
the period of each input s i g n a l .
output higher-precision measurement d a t a in
low frequency operation
i n t e r v a l .
E v e n t inputs
counter.
terminated w i t h a
w i t h a
The highest display
resolution
advanced universal
function
is used to measure
T h i s function
relatively
mode.
— T i m e measurement
The time measurement function
the interval time between any t w o edges of
different
t w o s i g n a l s , and between t w o
pulse signals.
- E v e n t Input t o t a l count measurement
number
The event input t o t a l count measurement
is used to measure the t o t a l number of event
to the counter.
ratio
through panel operations or by inputting gate
signais externally.
In addition,
self-check function.
measurement functions can be tested.
The display function
and consists of many L E D s
unit, gate a c t i v i t y and overflow occurrence.
The FC-757 multi-functional
c r y s t a l oscillator a s the time
would
Therefore, high accuracy measurement is not adversely
affected by f l u c t u a t i o n s
supply
voltage.
function
is used to measure
T h i s function
can be
the FC-757 universal counter has a
W i t h t h i s check f u n c t i o n ,
supports a leading-zero
indicating a measurement
counter has a high stable
base clock generator.
in temperature and power
'single-shot'
function
function
inputs
controlled
major
blanking
3
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