Operating
Instructions—
Type
3B5
FIRST-TIME
OPERATION
The
following
steps
will
demonstrate
the
basic
function of
the
controls and
connectors of
the
Type
3B5
and
also
dem
onstrate
the
basic
operation
of
this
unit.
It
is
recommended
that
this
procedure
be
followed
completely
for
first-time
familiarization with
the
instrument.
The
first
12
steps
of
this
procedure
describe
the
method
of
setting
up
the
system
for
correct
time
measurements.
These
steps
may
be
used
to
set
up
the
unit
when
it
is
installed
in
an
oscilloscope
other
than
the
one
with
which
it
was
cali
brated.
NOTE
The
following
procedure
is
written
using
a
Tek
tronix
Type
561A
or
564.
Other
units
may
require
slight
changes
in
this
procedure.
Set-up
Information
1.
With
the
indicator
oscilloscope
power
turned
off,
insert
the
Type
3B5 into
the
horizontal
plug-in compartment
(com
plete
installation instructions
are
given
earlier
in
this
sec
tion).
2.
Insert
a
3-series
amplifier
unit
into
the
left
plug-in
com
partment.
(This
procedure
is
written
assuming
that
an
auto
matic/programmable amplifier
unit is
used;
if
other
units
are
used,
some of
the
demonstrations
may
not
apply.)
3.
Set
the
oscilloscope
intensity
control
counterclockwise.
4.
Connect
the
oscilloscope to
a
power
source which
meets
its
voltage
and
frequency requirements.
5. Turn
on the oscilloscope
power
switch.
Allow
about
five
minutes
warm
up
so
the
units
reach
a
normal
operating
temperature
before
proceeding.
6.
Set
the
front-panel controls
as
follows:
Type
3B5
Mode
MAN
POSITION
Midrange
DLY'D
SWP
MAG
OFF
DELAY
5.00
MANUAL
TIME/DIV
5
ms
VARIABLE
CAL
Trigger Function
INT-AUTO
LEVEL
Midrange
SLOPE
+
Amplifier
Unit
Position
Midrange
Input
coupling
DC
Volts/division
20
Millivolts
Mode
Manual
Indicator
Oscilloscope
Focus
Adjust
for
correct
display
Intensity
Adjust
for
visible
display
Calibrator
Scale
illumination
Power
0.1
volts
As
desired
On
7.
Connect
the
oscilloscope
calibrator
output
connector
to
the
input
of
the
amplifier
unit
with
a
BNC
cable.
8.
Press
the
SEEK
buttons
on
both
the
automatic/program
mable
amplifier
unit
and
the
Type
3B5.
The
display
should
be
between
two
and
five
divisions
vertically
with two
to
six
cycles
displayed horizontally.
9.
Push
the Type 3B5 MAN button
and
check
the
display
for
three
complete
cycles.
More
or less
cycles
may
indicate
incorrect
CAL
adjustment
(applies
for
60-Hz
calibrator
fre
quency
only).
See
Horizontal
Gain
Adjustment
in
this
section.
10.
Hold
the
SEEK
button
depressed
and
note
the
readout
panel
indication
and
number
of
cycles
in
the
display.
Then,
turn
the
CYCLES/SWEEP
adjustment
counterclockwise.
Note
that
the
sweep
rate
indicated on
the
readout
panel
increases
and
fewer
cycles
are
displayed.
11.
Hold
the
SEEK
button
depressed
and
turn the
CYCLES/
SWEEP
adjustment
clockwise.
Note
that
the
sweep
rate
decreases
and
more
cycles
are
displayed.
12.
Hold
the
SEEK
button
depressed
and
adjust
the
CYCLES/SWEEP
adjustment
for
the
desired
number
of
cycles
in
the
display
(determines
nominal
number
of
cycles
in
Seek
Mode
display;
sweep
rate
increases in
5-2-1
sequence).
Normal
adjustment
is
near
midrange
with
between
two
and
six
cycles
displayed.
Release
the
SEEK
button
after the
nominal
range is
obtained.
Operating
Mode
13.
Turn
the
MANUAL
TIME/DIV
switch
to
.1
ms.
Note
that
the
SEEK
light
goes
off
and
the
MAN
light
comes
on
when
the
MANUAL
TIME/DIV
switch
is
turned.
Also,
note
that
the
sweep-rate
readout
changes
as
various
sweep
rates
are
selected.
14.
Press
the
SEEK
button.
Note
that
the
display
returns
to
the
same
display
as obtained in
step
12.
15.
Turn
the
MANUAL
TIME/DIV
switch
to
20
ms.
16.
Press
the
SEEK
button.
Note
that
the
display
again
is
the
same
as in
step
12.
Sweep
and
Delayed
Sweep
Magnifier
17.
Turn
the
VARIABLE
control
throughout its
range.
Note
that
the UNCAL
readout
comes
on
and
the
s/DIV
readout
turns
off
when the
VARIABLE
control
is
moved
from
the
CAL
position
(fully
clockwise). The
sweep
rate
is
slower
by
about
2.5
times when
in
the
fully
counterclockwise
position
as
indicated
by
more
cycles
displayed
on
the
CRT.
Return
the
VARIABLE control
to
CAL.
18.
Press
the
MAN
button
and
set
the
DLY'D
SWP
MAG
switch
to
X10.
Note
that
the
CRT
display
is
expanded
starting
at about
the
center
of
the
display.
Also
note
that
the
MAG'D
SWP
readout
is
on
and
the
sweep
rate
as
indi
cated
by
the
readout
panel
is
10
times
faster
than
the
setting
of
the
MANUAL
TIME/DIV
switch.
2-4
Содержание 3B5
Страница 4: ...Fig 1 1 Type 3B5 Automatic Programmable Time Base unit Type 3B5...
Страница 15: ...Operating Instructions Type 3B5 TYPE 3B5 CONTROL SET UP CHART Fig 2 2 Control set up chart 2 7...
Страница 48: ...CO I o Fig 3 13 Delay and Timing Circuit logic block diagram Circuit Description Type 3B5...
Страница 61: ...GO i GO GO Fig 3 22 Seek Ciicuit Logic block diagram Circuit Description Type 3B5...
Страница 70: ...u k KJ Fig 3 29 Circuit conditions for Manual Mode operation Circuit Description Type 3B5...
Страница 71: ...w K w Fig 3 30 Circuit conditions for Seek Mode operation Circuit Description Type 3B5...
Страница 72: ...w I u U Fig 3 31 Circuit condition for External Mode operation Circuit Description Type 3B5...
Страница 88: ...Maintenance Type 3B5 Fig 4 9 Location of components on Logic Card 4 14...
Страница 89: ...u Oi Fig 4 10 Location of components on Counter Card Maintenance Type 3B5...
Страница 92: ...NOTES I...
Страница 104: ...NOTES...
Страница 106: ...Calibration Type 3B5 Fig 6 1 Recommended calibration equipment...
Страница 160: ......
Страница 176: ...J400 RtADOUT BOARD 3B5 PLUG IN A READOUT...
Страница 182: ...397 R E A D O U T B O A R D 10 6b READOUT BOARD...
Страница 184: ...FIG 1 FRONT SWITCHES TYPE 3B5 AUTOMATIC PROGRAMMABLE TIME BASE...
Страница 185: ...FIG 2 CHASSIS REAR 3 GS to TYPE 3B5 AUTOMATIC PROGRAMMABLE TIME BASE...
Страница 186: ...OPTIONAL ACCESSORIES...