Tektronix 2221 User Manual

Section
3-2221
Operators
Л
П
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o
CONTROLS ,
CONNECTORS ,
AND
INDICATORS
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The following descriptions are intended to familiarize
the operator with the location and function of the
instrument's controls , connectors , and indicators .
7 )
TRACE
ROTATION
Control
-
Permits
alignment of
the trace
with the
horizontal graticule line . This
con
trol is a
screwdriver
adjustment that ,
once set ,
should
require
little
attention
during
normal
operation
.
POWER AND DISPLAY
8
INTENSITY Control -
Adjusts the
brightness of
all
displayed NON - STORE waveforms .
See Figure 3-1 for the location of items 1 through 9 .
9
Л
STORE / READOUT INTENSITY
Control -
Adjusts
the brightness of the STORE mode displayed
waveforms and the readout intensity in both STORE
and NON - STORE modes . The fully counterclockwise
position of the control toggles the STORE / NON
STORE
readout
on and off .
1
Internal
Graticule -
Eliminates
parallax
viewing
error
between the trace and the graticule lines . Rise - time
amplitude and measurement points are indicated at
the left
edge
of
the
graticule
.
C
VERTICAL
2
POWER
Switch -
Turns
instrument
power on
or
off .
Press in for ON ;
press again for
OFF .
See Figure 3-2 for the location of items 10 through 17 .
3
Power On Indicator Lights up while instrument is
operating .
4
11
П
П
FOCUS
Control -
Adjusts for
optimum
display
definition . Once set , proper focusing is maintained
over a wide
range of display
intensity
.
10
VOLTS
/
DIV
Switches - Select the
vertical
channel
deflection
factors from 2
mV to 5 V
per
division
in a
1-2-5 sequence . The VOLTS / DIV control settings for
displayed
waveforms
containing
cursor
symbols
are
shown in the crt readout .
5
PROBE
ADJUST
Connector -
Provides an
approxi
mately 0.5 V , negative - going , square - wave voltage
( at approximately 1 kHz ) for use in compensation
voltage probes and checking the vertical deflection
system . The PROBE ADJUST output is not intended
as a reference in checking either the vertical or the
horizontal accuracy of the instrument .
П
In STORE
mode , SAVE
waveforms
and
waveforms
waiting
to
be
updated
between
trigger
events
may
be vertically expanded or compressed by up to a
factor
of
10 times (
or as many
VOLTS
/
DIV
switch
positions
remaining -
whichever is
less ) by
switching
the corresponding VOLTS / DIV control . ( Waveforms
acquired at 2 mV / div cannot be expanded and
waveforms
acquired
at
5
V /
div
cannot
be
compressed . ) The VOLTS / DIV readout reflects the
vertical scale
factor of the
displayed
waveform . If the
VOLTS
/ DIV
switch is
switched
beyond
the
available
expansion or compression range , the readout is
tilted
to
indicate that
the
VOLTS / DIV
switch
setting
and
the
VOLTS
/
DIV
readout
no
longer
agree .
6
BEAM FIND Switch - Compresses the vertical and
horizontal
deflection
to
within the
graticule area and
intensifies the
display to aid the
user in
locating
traces that are overscanned or deflected outside of
the
crt
viewing
area .
C
П
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3-1

Tektronix 2221 Specifications

General

Brand	Tektronix
Model	2221
Category	Test Equipment
Language	English