Tektronix 7B10 User Manual

Section
2—
7B10
Operators
OPERATING
INSTRUCTIONS
The
7B10 Time-Base
unit
operates
with
a Tektronix
7100,
7700,
7800,
or
7900-series
oscilloscope
mainframe
and
a 7A-
series amplifier
unit
to form
a
complete
oscilloscope
system.
This
section
describes
the
operation
of
the front-panel
controls and
connectors,
provides
detailed
operating
information,
an
operators
checkout
procedure,
and
basic
applications
for
this
instrument.
CONTROLS,
CONNECTORS,
AND
INDICATORS
All controls,
connectors,
and indicators
required
for
the
operation of the
time-base
unit
are
located
on the
front
panel. Figure 2-1
provides
a brief
description
of
all
front-
panel
controls,
connectors,
and
indicators.
More
detailed
information
is
given in
the
Detailed
Operating
Information.
OPERATORS
CHECKOUT
The following
procedures
are provided
for
checking
basic
instrument
functions.
Refer
to the
description
of the
controls,
connectors,
and
indicators
while
performing
this
procedure. If
performing
the
operators
checkout
procedure
reveals
a malfunction
or
possible
maladjustment,
first
check
the
operation
of
the
associated
plug-in
units, then
refer
to the
instruction
manual for
maintenance
and
adjustment
procedures.
SETUP
PROCEDURE
1.
Install
the
time-base
unit
being
checked
in
the
A
horizontal
compartment
of
the
mainframe.
2. Install
an
amplifier
plug-in
unit
in
a
vertical
compartment.
3. Set
the
time-base
unit
controls
as
follows:
SLOPE
(+)
mode
auto
COUPLING
AC
SOURCE
INT
POSITION
Midrange
TIME/DIV
1
ms
VARIABLE
(CAL IN)
Calibrated
(Pushed
in)
HOLD
OFF
min
(fully
counterclockwise)
mag
XI
(pushed
in)
EXT
TRIG IN
OUT
50
O
4. Turn
on the
mainframe
and
allow
at
least 20
minutes
warmup.
5. Set
the mainframe
vertical
and
horizontal
modes
to
display
the
plug-in
units
used and
adjust
the
intensity
and
focus for
a
well-defined
display.
See
the
oscilloscope
mainframe
and
amplifier
unit
instruction
manuals
for
detailed
operating
instructions.
SWEEP
FUNCTIONS
Normal
Sweep
Perform
the
following
procedure
to
obtain
a
normal
sweep
and
to demonstrate
the
function
of
the
related
controls:
1 . Perform
the
preceding
Setup
Procedure.
2.
Connect
a
0.4-volt,
1
-kilohertz
signal
from
the
mainframe
calibrator
to
the
amplifier
unit
input.
3.
Set the amplifier
unit deflection
factor
for
4
divisions
of
display.
4. Adjust
the LEVEL
control
for
a
stable
display,
5. Turn
the
POSITION
control
and
note
that
the
trace
moves
horizontally.
6.
Turn the
FINE
control
and
note
that
the
display
can
be
precisely
positioned
horizontally.
7.
Check the
display
for
one
complete
cycle
per
division.
If
necessary,
adjust the
front-panel
SWP
CAL
screwdriver
adjustment
for
one
complete
cycle
per
division
over
the
center
8
graticule
divisions.
Be sure
that
the
timing
of
the
mainframe
calibrator
signal
is
accurate
to within
0 25%
(+20°
to
+ 30°
C).
8.
Press to
release
the
VARIABLE
(CAL
IN)
control.
Turn
the VARIABLE
(CAL
IN)
control
fully
counterclockwise
and
note
that
the
displayed
sweep
rate
changes
to
at
least the
next
slower
TIME/DIV
switch
setting
(i.e.,
2
milliseconds/division).
Press
the
VARIABLE
(CAL IN)
knob
in
to the
calibrated
position.
Magnified
Sweep
Perform
the
following
procedure
to
obtain
a XI
0
magnified
display
and
to
demonstrate
the
function
of
the
related
controls:
1.
Obtain
a one
cycle
per
division
display
as
described
in
the
preceding
Normal
Sweep
procedure.
2.
Press
to release
the
MAG
button
(XI
0).
Note
that
the
unmagnified
display
within
the
center
division
of the
graticule
is
magnified
to
about
10
divisions.
3.
Press
the
MAG
button
(XI
).
2-1

Tektronix 7B10 Specifications

General

Brand	Tektronix
Model	7B10
Category	Test Equipment
Language	English