Measuring - Fluke PM6685 Getting Started

Measuring
Connect
the
output
of
the generator to input
A
of the
coun-
ter
and you
wii!
immediately see
the
measured frequency
on
the
display,
Note
the high resolution,
Nine
digits
are
dis-
played
in
a
measuring
time
of
only
200 ms.
The
following
section
is
a short description
on
how
to
use the keys and
the functions
for
setting the input.
Input settings
01^
AUTO
function
AUTO
The
built-in
AUTO
function
makes
the
use
of
PM6685
easy.
The peak
to
peak
voltage
is
measured
and Auto
sets the
hysteresis
band between
1/3
and
2/3.
You'll
soon
find that
it's
much
easier,
and more
accurate
to
measure
with
the
AUTO
function on,
than
to
do
manual
set-
tings.
There
are
just
a
few
exceptions
that
needs manual
set-
tings -
AM-moduiated
signals,
extremely noisy
signals,
non-
repetitive signals,
and
signals with frequencies
below 50
Hz.
Level meter
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A
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;
The
bar
graph
scale
has two
functions:
It
shows
the input
level
when
AUTO
is
on,
and
the
sensitivity setting
when
AUTO
is
turned
off.
A
scale
In
Vrms
is
printed
on the
front
panel.
One
step
on
the scale
equals 3dB.
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