Tektronix 2236 User Manual

Preparation For Use - 2236 Operators
П
П
pressed in
, the LED
illuminates
to indicate
that the A
Trigger circuit
is armed (
READY ) for a single
sweep
display
Table 2-1
VERT MODE Trigger Source
C
VERTICAL MODE
Trigger
Source
27 A TRIGGER LEVEL Control - Selects the amplitude
point on the trigger signal at which the sweep is
triggered
.
CH 1
CH
1
OR X &
DMM
input
signal .
CH 2 CH
2
OR Y
input
signal .
BOTH and ADD
П 1
П
28
SLOPE
Switches
Select
the
slope of the
signal that
triggers
the
sweep .
BOTH
and
CHOP
OUT
:
/
-When
button
is
released out ,
sweep
is triggered from the positive - going slope of the
trigger signal . In WIDTH mode the CTM measures
the
positive half cycles of
the trigger
signals
.
BOTH and ALT
Algebraic
sum of
CH 1
OR
X
&
DMM
and
CH
2
OR Y
input
signals
.
Algebraic
sum of CH
1 OR
X &
DMM
and
CH
2
OR
Y
input
signals .
Alternates between Channel 1 and
Channel 2 on
every
other
sweep
(
i.e.
CH 1
OR X &
DMM
input signal
trig
gers
the sweep
that
displays
Channel
1 , and CH
2 OR Y
input
signal
triggers
the
sweep
that
displays
Channel 2 )
.
IN :
-When
button
is
pressed in ,
sweep is
triggered from the negative - going slope of the trig
ger signal . In WIDTH mode the CTM measures the
negative half cycles of the trigger signals .
CH 2 - The signal applied to the CH 2 OR Y input
connector
is the
source of the
trigger signal .
Л
П
29 A
SOURCE
Switch
-
Determines
the
source of the
trigger signal that is coupled to the input of the A Trig
ger
circuit
.
31 A EXT COUPLING Switch / Determines the method
used to couple external signals to the A TRIGGER
circuit from the EXT INPUT connector .
INT -
Permits
triggering on
signals that are
applied
to the CH
1 OR X
&
DMM and CH 2
OR Y
input
connectors
. The
source of the
internal signal is
se
lected by the A & B INT switch .
AC -
Signals above 60 Hz
are
capacitively
coupled
to the
input
of
the A
Trigger
circuit
. Any
dc
compo
nents are blocked , and signals below 60 Hz are
attenuated .
П
П
П
LINE — The
power
-
source waveform is the
source
of the trigger
signal . This
trigger source
is useful
when
vertical
input signals are
time
related (
multi
ple or
submultiple ) to the
frequency of the
power
input
source voltage .
DC — All components of the signal are coupled to
the input of the A Trigger circuitry . This position is
useful
for
displaying low -
frequency or low
-
repeti
tion -
rate
signals .
EXT -
Permits
triggering on
signals
applied to the
EXT
INPUT
connector
.
DC : 10 — External trigger signals are attenuated
by a factor of
10. All
components of the signal
are
coupled to the input of the A Trigger circuit .
30 A & B
INT
Switch --
Selects the
source
of
the
internal
triggering signal when the A SOURCE switch is set to
INT
.
32 EXT INPUT Connector — Provides a means of intro
ducing external signals into the A Trigger circuit
through the A EXT COUPLING switch .
CH 1 — The signal applied to the CH 1 OR X &
DMM input
connector is the
source
of
the
trigger
signal .
n П
П
П
VERT
MODE
—
The
internal
trigger
source
is
deter
mined by the
signals selected
for display by
the
VERTICAL MODE
switches
.
See Table 2-1
for
VERT
MODE
trigger
source .
33 B TRIGGER LEVEL Control - Selects the amplitude
point on the trigger signals at which the sweep is trig
gered . When fully clockwise ( B RUNS AFTER DLY ) ,
the B Sweep circuit runs immediately following the de
lay time selected by the A SEC / DIV and the B DELAY
TIME POSITION control .
O
2-7
П

Tektronix 2236 Specifications

General

Brand	Tektronix
Model	2236
Category	Test Equipment
Language	English