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5.
OPERATING PROCEDURES
E v e r y time when you s t a r t using the FC-757 M u l t i -
Functional
universal counter, look a t the rear panel
and v e r i f y t h a t the power supply voltage selector
setting
indicates the level of the supply voltage
be a c t u a l l y
applied.
1)
Connect the accessory power cord w i t h the
input connector (inlet) of the rear panel and
insert the A C plug into the nearby
2)
Press the P O W E R switch ( m ) .
be turned
on.
3)
When the counter
is switched on w i t h a l l
functional
switches set to O F F , the L E D display
indicates ' 0 ' .
4)
Read carefully Chapter 3 P R E C A U T I O N
(on page 7) to handle this instrument
5-1
Frequency measurement
5 - 1 - 1
Frequency Measurement w i t h Channel A (5Hz
to
175MHz)
(1)
Input a target
signal (to be measured)
C H A N N E L A
input juck
to
power
outlet.
The counter
w i l l
the
F O R U S E
correctly.
to
© .
(2)
Select the F R E Q / A
mode by using
switch @ .
(3)
Select the measurement unit w i t h display unit
select switch @ .
If the display unit select switch is pressed
the measurement value w i l l be
( - J M - ) ,
displayed in M H z / m s .
unit L E D © w i l l be turned
If the switch is pressed again ( J U L ) ,
measurement value w i l l be displayed
k H z / ^ s .
In this case, display unit
w i l l be turned
on.
Note : The m a x i m u m
in each display range varies
on the measurement modes.
k H z / ^ s measurement mode, up
10MHz-frequency can be processed while
the m a x i m u m
handled in the M H z / m s mode is 175MHz.
The proper
range should be used accord-
ing to
input signal frequencies w i t h
each range characteristics f u l l y in
F U N C
In t h i s case, display
on.
the
in
L E D (3)
measurement
frequency
depending
In the
to
frequency t h a t can be
mind.
19
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