Philips PM 3266 - Page 154

3. 4.
1
0.
7.
Bandwidth
—
Depress
push-button
A (B)
of the display-mode
controls
(SI
)
—
Push
the Y POSITION
controls to the NORM position
—
Set the channel
A (B) AMPL switch
to 2
mV/DIV and its vernier
to
CAL
—
Depress push-buttons
AC
of the signal coupling controls
—
Depress
push-button MTB
of
the X
deflection controls
(S2)
—
Push
the TB
MAGN switch
to x1
—
Depress push-button AUT of the
trigger-mode controls
—
Depress push-button
HF
of the
trigger-coupling
controls
—
Depress push-button A
(B) of the
trigger-source controls (S22)
—
Set
the
m.t.b. TIM
E/D IV
switch
to 2
ms and its
vernier
to
CAL
—
Set
the
d.t.b.
TIME/DIV switch to
OFF
—
Apply
a
sine-wave voltage
of 1 6
mVp_p,
frequency
2
MHz
,
to the
channel
A (B)
input
—
Check that the
trace
height
is 8
DIV
—
Increase
the frequency
of the input
signal to
35 MHz
—
Check
that the trace
height is at
least
5,6
DIV
—
Set
the channel A
(B) AMPL
switch to 5
mV/DIV
and
its
vernier
to
CAL
—
Increase the input
voltage to
40
mVp.p,
frequency 2
MHz
—
Check that the
trace
height
is
8
DIV
—
Increase the
frequency
of the input
voltage to
100
MHz
—
Check that the trace
height is at
least 5,6
DIV
—
Remove
the input
signal
3.4.10.8.
Common-mode
rejection
-
Depress
push-button
ADD of
the
display-mode
controls
(SI
)
—
Push
the
channel A
POSITION
control to
NORM
—
Push the
channel B
POSITION
control to
INVERT
-
Set both
AMPL
controls to
10
mV/DIV
and
their
verniers to CAL
—
Apply a
sine-wave
voltage
of 240
mVp.p
simultaneously
to
the
channel A
and B inputs
-
Check the
rejection
in
accordance
with
the
following
table
Note: Adjust
the
channel A
or B
AMPL
vernier
control
for
minimum
trace
height.
Input voltage
Frequency
Max.
trace
height
240
mV
100
kHz
240
mV
2
MHz
240
mV 50
MHz
1,2
SUBDIV
1,2
SUBDIV
6
SUBDIV
—
Remove
the input
signal.
Rejection
factor
>100
> 100
>
20
3.4.
10.9.
Dynamic
range and
position range
-
Depress
push-button A
of
the
display-mode
controls
(SI
)
-
Set
both AMPL
switches to 5
mV/DIV
and
their
verniers to
CAL
—
Apply
a
sine-wave
signal
of
1 20
mVp.p,
frequency
10
kHz, to
the
channel A
(B)
input
—
Check that
the top
and
bottom
parts of the
sine-wave
signal
can be
displayed,
reasonably
undistorted,
within the
measuring
graticule,
using
the
channel
A (B)
POSITON
control
—
Remove
the input
signal.
3.
4.10.1
0.
Chopped
mode
-
Depress
push-button
CHOP
of
the
display-mode
controls
—
Set
the m.t.b.
TIME/DIV
switch to
.2
ps
—
Check that
there
are two
time-base
lines
displayed
which
can be
shifted in
relation
to
each
other,
using
the Y
POSITON
controls.