EasyManua.ls Logo

Tenma 72-455 - Operating Instructions; Start-up Procedure; Waveform Selection; Frequency Selection

Tenma 72-455
15 pages
Save Page as PDF
Print Icon
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Loading...
OPERATING INSTRUCTIONS
1.
Start-up
First
check
that
the
fuse
(12),
then
connect
the
supplied
AC
power
cord
to
your
AC
outlet.
Toggle
the
power
switch
(2)
and
the
pilot
lamp (1) will light
indicating
that
the
unit
is
ready
for
operation.
Allow
2
or
3
minutes
for
the
unit
to
warm
up
so
that
it
is
stabilized.
2. Waveform
Selection
Press
the
WAVE FORM
switch
(5)
to
"~"
position
to
obtain
sine waves. Press
the
switch
to
the"
.n.
"posi-
tion
for
square
waves.
3.
Frequency
Selection
First
set
the
FREQ.
RANGE
switch
(6)
to
the
desired
range,
then
set
the
frequency
dial (8) so
that
the
dial
pointer
(10)
indicates
your
frequency.
Example:
Suppose
you
want
to
select
a
frequency
of
1.5kHz,
then
proceed
as
follows:
1.
Set
FREQ.
RANGE
switch
(6)
to
x
100.
2. By using
the
frequency
dial,
set
the
dial
pointer
(10)
to
"15"
on
the
dial scale.
The
frequency
thus
selected
is:
15x
100=
1500(Hz)
=
1.5(kHz)
4.
Adjustment
of
Output
Voltage
The
output
voltage
from
OUTPUT
terminal
(4),
be it sine wave
or
square
wave,
can
be
continuously
varied
by
AMPLITUDE
(7)
and
stepper
riown by
ATTENUATOR
(3).
Example:
To
adjust
output
voltage
to
10mV
rms, pro-
-6-
ceed
as
follows:
1.
Connect
a
voltmeter
capable
of
measuring
AC
lV
rms
to
OUTPUT
terminal
(4).
2.
Set
ATTENUATOR
(3)
to
OdB
and
then
adjust
AMPLITUDE
(7) until
the
voltmeter
indicates
lV
rms. A voltage
of
lV
rms will
appear
at
OUTPUT
terminal
(4).
3.
Set
ATTENUATOR
(3)
to
-40dB.
The
voltmeter
indicates
about
OV, whi
Ie
a voltage
of
10mV
rms
appears
at
OUTPUT
terminal
(4).
5.
Use
of
Synchronizing
Input
Terminal
(instrument
is
between
990Hz
and
1010Hz)
By
applying
an
external
sine wave signal
to
SYNC
terminal
(11),
the
oscillating
frequency
of
instrument
can
be
synchronized
to
the
external
signal.
The
synchron.izing
range
is
increased
in
proportion
as
the
input
voltage
is
increased as
shown
in
Fig.
3,
indicating
that
the
synchroniz-
ing range
is
about
±
1%
per
input
voltage
of
1V.
Example:
Suppose
that
the
input
signal voltage
is
1V
rms
and
the
oscillating
frequency
of
GEN-
ERATOR
is
between
990Hz
and
1010H
(lkHt
±
1kHz
x
l%/v
xlV
=
lkHz±
lkHzx
0.01),
the
frequency
can
be
synchronized
with
1
kHz
of
the
input
signal.
Note
that
too
high a
synchronizing
signal voltage will
affect
the
amplitude
and
distortion
factor,
and
care
must
therefore
be
taken
when
the
signal voltage
is
higher
than
3V
rms. Also,
note
that
if
the
synchronizing
signal
is
largely
deviated
from
the
frequency
of
instrument
the
synchroniza-
tion
is
pulled
out
which
affects
the
distortion
factor.
It
is

Table of Contents

Related product manuals