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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