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5.5
External Counter Operation
The built-in frequency
counter can
measure
external signais in
the
5Hz
to
lOOMHz
range.
A. Push the CNTR INP
switch
in.
B. Switch the back panel
switch to 10MHz or
lOOMHz, depending upon the frequency to be
measured
or
the resolution required.
C. Connectthe
signal
to be measured to the
EXT CNTR connector.
D. Press the appropriate
gate
Lime button
(the frequency appears in
the Frequency Display
window, but the OVER indicator is not lit). For unknown
signais,
push the 1
sec
button
first.
NOTE:
For better
accuracy, wail
60
seconds
for
a stable
reading when the 10
sec
button
is
pressed.
5.6
Auto Sweep Operation
A. Push the desired
FUNCTION
button
for square,
triangle,
or sine
wave
output.
B. Push the desired Range button
(lM,
lOOk
,
lOk,
lk, 100,
10,
1)
for
the desired
frequency.
C. Turn the FREQUENCY knob until the
MAXIMUM
desired
frequency shows
in the
Frequency Display window.
D. Ad just the AMPL
control for
the desired leve!
on
the Output
jack,
or pull the TIL/CM OS
knob and
ad
just the desired output leve! on the
TTL/CMOS output
jack.
15
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