Tektronix 585 User manual
INSTRUCTION
MANUAL
NOTICE
This
oscilloscope
has
been
improved
over
in
struments
manufactured
before
Serial
No.
2585.
The
improvements
are
within
the
ertical
Ampli
fier
system
and
are
required
by
the
user
of
plug
in
units
with
type
numbers
above
Type
80.
The
improvements
can
be
put
into
any
instrument
before
Serial
No.
2585
by
ordering
Tektronix
Field
Modification
No.
040-275.
See
your
local
Tektronix
Field
Engineer
for
details
and
avail
ability.
Tektronix,
Inc.
S.W.
Millikan
Way
•
P.
O.
Box
500
•
Beaverton,
Oregon
•
Phone
Ml
-0161
•
Cables:
Tektronix
Tektronix
International
A.G.
Terrassenweg
1A
•
Zug,
Switzerland
•
PH.
0 2- 9192
•
Cable:
Tekintag,
Zug
Switzerland
•
Telex
53.57
070-171
WARRANTY
All
Tektronix
instruments
are
warranted
against
defective
materials
and
workman
ship
for
one
year.
Tektronix
transformers,
manufactured
in
our
own
plant,
are
war
ranted
for
the
life
of
the
instrument.
Any
questions
with
respect
to
the
war
ranty
mentioned
above
should
be
taken
up
with
your
Tektronix
Field
Engineer.
Tektronix
repair
and
replacement-part
service
is
geared
directly
to
the
field,
there
fore
all
requests
for
repairs
and
replace
ment
parts
should
be
directed
to
the
Tek
tronix
Field
Office
or
Representative
in
your
area.
This
procedure
will
assure
you
the
fastest
possible
service.
Please
include
the
instrument
Type
and
Serial
number
with
all
requests
for
parts
or
service.
Specifications
and
price
change
priv
ileges
reserved.
Copyright
©
1959.
New
material
copy
right©
1962
by
Tektronix,
Inc.,
Beaverton,
Oregon.
Printed
in
the
United
States
of
America.
All
rights
reserved.
Contents
of
this
publication
may
not
be
reproduced
in
any
form
without
permission
of
the
copy
right
owner.
Warranty
Section
1
Characteristics
Section
2
Operating
Instructions
Section
3
Applications
Section
4
Circuit
Description
Section
5
Maintenance
Section
6
Calibration
Procedure
Section
7
Accessories
Section
8
Parts
List
and
Schematics
CONTENTS
SECTION
1
CHARACTERISTICS
General
The
Tektronix
Type
585
Oscilloscope
is
a
wide
range,
general
purpose
laboratory
instrument
which
provides
accurate
measurements
in
the
d
c
to
approximately
95
mega
cycle
range.
Plug-in
amplifiers
are
used
in
the
vertical
de
flection
system,
permitting
the
instrument
to
be
used
in
many
specialized
applications.
Any
of
the
Tektronix
Eighty
Series
Plug-In
Units
can
be
used
with
the
oscilloscope
to
satisfy
many
types
of
wide-band
uses.
Use
of
the
Type
81
Plug-In
Adapter
permits
use
of
any
of
the
Tektronix
letter
series
plug-ins
for
applications
involving,
among
others,
dual
trace
operation,
low
level
signals,
differential
signals,
pulse
sampling,
and
transistor
risetime
checking.
High
calibrated
sweep
rates
allow
full
use
of
the
rise-time
capabilities
of
the
instrument.
Special
circuits
incorporated
in
the
Type
585
Oscilloscope
allow
accurate,
continuously
variable
delay
in
the
pre
sentation
of
a
sweep
from
1
microsecond
to
10
seconds
after
the
receipt
of
a
triggering
impulse.
The
delayed
sweep
feature
permits
highly
magnified
displays
of
a
small
portion
of
an
undelayed
sweep;
accurate
measurements
of
wave
form
time
jitter;
precise
time
measurements,
as
well
as
many
other
uses.
VERTICAL
DEFLECTION
SYSTEM
Characteristics
for
the
vertical
deflection
system
of
the
Type
585
Oscilloscope
depend
upon
the
plug-in
unit
and
probe
used
with
the
instrument.
The
following
character-
3.7
nanoseconds
Fig.
1-1.
Vertical
risetime
of
the
Type
585
Oscilloscope
and
Type
80
Plug-In
combination.
Bandpass
1
Risetime
2
erical
Deflection
Factor
Input
Characteristics
DC
to
approximately
95
megacycles
Better
than
3.9
nsec,
10%
to
90%,
nominal
ly
3.7
nsec.
0.1
volts
per
centime
ter.
A
function
of
the
indiv
idual
plug-in
or
probe
used.
HORIZONTAL
DEFLECTION
SYSTEM
Sweep
Rates
Time
Base
A
0.05
microseconds
(50
nsec)
to
2
seconds
per
centimeter
in
24
accurately
calibrated
steps.
An
uncalibrated
control
permits
sweep
rates
to
be
varied
continuously
between
50
nsec
and
approximately
5
seconds
per
centimeter.
Calibrated
sweep
rates
are
typically
within
2%
and
in
all
cases
within
3%,
of
the
indicated
rate.
Time
Base
B
2
microseconds
to
1
second
per
centimeter
in
18
accurately
calibrated
steps.
All
sweep
rates
are
typically
within
1
%,
with
the
.2,
.5,
and
1
second
per
centimeter
ranges
within
3%
of
the
indicated
rates.
Magnifier
Provides
a
5
times
horizontal
expansion
of
the
center
2-
centimeter
portion
of
the
oscilloscope
display.
It
extends
the
fastest
Time
Base
A
sweep
rate
to
10
nsec
per
centi
meter
with
a
typical
1
%
linearity.
Triggering
Modes
Time
Base
A
and
B
External,
Internal,
and
Line.
Triggering
SLOPE
and
LE EL
are
adjustable.
1-1
istics
are
given
for
the
Type
585
when
used
with
a
Type
80
Plu
g
-ln
Unit
and
a
Type
P80
Probe.
Characteristics
—
Type
585
Triggering
Signal
Requirements
Time
Base
A
Internal
—
a
signal
producing
4
mm
of
vertical
deflection
from
15
cps
to
10
m
c
.
a
signal
producing
1.5
cm
of
vertical
deflection
from
10
to
30
m
c
.
a
signal
producing
2.5
cm
of
vertical
deflection
from
30
to
50
m
c
.
a
signal
producing
4.0
cm
of
vertical
deflection
from
50
to
100
m
c
.
NOTE
See
page
2-9
for
operating
instructions
to
syn
chronize
the
A
sweep
with
signals
of
less
than
4.0
cm
amplitude
from
50
m
c
through
150
m
c
.
External
—
a
signal
of
0.2
volts
to
30
volts
peak-to-peak.
(The
A
sweep
will
trigger
on
larger
signals,
but
the
TRIG
GERING
LE EL
control
operates
only
over
a
—
15
volt
to
+
15
volt
range.)
Time
Base
B
Internal
—
4
mm
of
c
rt
display
through
500
kc,
increasing
to
2
cm
ert
display
at
4
megacycles.
External
—
AC
or
DC:
a
signal
of
±0.4
volts
through
500
kc,
increasing
to
1
volt
at
1
m
c
,
and
2.5
volts
at
2
m
c
.
External-Horizontal
Signal
Input
Deflection
Factor
—
approximately
0.2
to
15
volts
per
centi
meter,
continuously
variable.
Frequency
Response
—
depends
on
the
amount
of
deflection.
The
product
of
frequency
response
and
deflection
in
centi
meters
is
approximately
4.8
megacycle
centimeters.
Input
Characteristics
—
1
megohm
paralleled
by
approximate
ly
50
pf.
Delayed
Sweep
Sweep
delay
continuously
variable
from
1
microsecond
to
10
seconds.
Actual
delay
steps
within
1%
of
indicated
delay
from
2
sec/cm
to
0.1
sec/cm;
0.2
sec/cm
to
1
sec/
cm
typically
within
1%
but
never
more
than
3%.
Incre
mental
delay
accuracy
is
within
0.2%.
Jitter
—
not
more
than
1
part
in
20,000.
1-2
Characteristics
—
Type
585
OTHER
CHARACTERISTICS
Cathode-Ray
Tube
Type
—
T581P31;
P
1
,
P2,
P7,
and
P
11
phosphors
optional.
Other
phosphors
available
on
special
order.
Unblanking
—
DC
coupled.
Accelerating
potential
—
10,000
volts.
Deflection
system
—
electrostatic.
Beam
deflected
vertically
by
6
pairs
of
distributed
deflection
plates.
Beam
deflected
horizontally
by
1
pair
of
deflection
plates.
Usable
viewing
area
—
4
centimeters
by
10
centimeters.
ertical
Deflection
Factor
—
4.6
to
5.6
volts
per
centimeter.
Horizontal
Deflection
Factor
—
18
to
21
volts
per
centimeter.
Graticule
Illumination
—
variable
edge
lighting.
Markings
—
marked
in
4
vertical
and
10
horizontal
1
-centi
meter
divisions
with
2-millimeter
markings
on
the
center
lines.
Amplitude
Calibrator
Waveform
—
square-waves
at
approximately
1
kc.
Output
voltage
—
0.2
millivolts
peak-to-peak
to
100
volts
peak-to-peak
in
18
steps.
Accuracy
—
peak-to-peak
amplitude
of
square-waves
within
3%
of
indicated
voltage.
Output
Loading
—
33
k
load
will
reduce
100
volts
output
2%.
500
k
load
will
reduce
50
volt
output
2%.
100
k
load
will
effect
voltages
1
volt
or
below.
Power
Supplies
Electronically
regulated
for
stable
operation
with
widely
varying
line
voltages
and
loads.
Line
voltage
requirements
—
105
to
125
volts,
or
210
to
250
volts.
Power
—
approximately
630
watts.
Line
frequency
—
50
to
60
cycles.
Output
Waveforms
Available
Positive
Gate
A
—
approximately
30
volts
peak-to-peak
with
same
duration
as
A
sweep.
Approximately
200
ohms
output
impedance.
Positive
Gate
B
—
approximately
30
volts
peak-to-peak
with
same
duration
as
B
sweep.
Approximately
300
ohms
output
impedance.
Delayed
Trigger
pulse
—
approximately
5
volts
in
amplitude,
occuring
at
end
of
the
delay
period.
Sawtooth
A
—
sweep
A
sawtooth
waveform,
approximately
150
volts
peak-to-peak.
Maximum
allowable
load,
18
k.
MECHANICAL
SPECIFICATIONS
Ventilation
Forced
filtered
air.
Thermal
relay
interrupts
instrument
power
in
the
event
of
overheating.
Will
operate
satisfactorily
up
to
approximately
120°
F
ambient
air
temperature.
Construction
Aluminum-alloy
chassis
and
three-piece
cabinet.
Photo-etched
anodized
panel,
blue
vinyl
covered
textured
aluminum.
Dimensions
—
see
Figure
1-3.
Weight
—
74
pounds.
Fig.
1-3.
Type
585
Oscilloscope
dimensions.
Accessories
Included:
2
Binding-post
adapters
(013-004)
1
Test
lead
(012-031)
1
Green
Filter
(378-514)
1
Power
cord
(161-010)
1
Adapter,
3
wire
to
2
wire
(103-013)
2
Instruction
Manuals
1-3
NOTES
SECTIOIXI
2
OPERATING
INSTRUCTIONS
General
Information
The
Type
585
Oscilloscope
is
an
extremely
versatile
instrument
which
is
adaptable
to
a
great
number
of
applica
tions.
However,
to
make
use
of
the
full
potentialities
of
the
instrument,
it
is
necessary
that
you
understand
completely
the
operation
of
each
control.
This
portion
of
the
manual
is
intended
to
provide
you
with
the
basic
information
you
require.
PRELIMINARY
INSTRUCTIONS
Cooling
A
fan
maintains
safe
operating
temperature
in
the
Type
585
by
circulating
filtered
air
over
the
rectifiers
and
other
components.
When
in
operation,
the
instrument
must
be
placed
so
that
the
air
intake
at
the
back
is
clear
of
any
obstruction
that
might
impede
the
flow
of
air.
Side
panels
should
also
be
in
place
for
proper
air
circulation.
The
air
filter
should
be
kept
clean
in
accordance
with
cleaning
instructions
found
in
the
Maintenance
Section
of
this
Manual.
Under
no
circumstances
should
your
Type
585
oscilloscope
be
operated
without
the
fan
running.
Without
the
fan,
inside
temperature
of
the
oscilloscope
will
rise
to
a
dangerous
level
in
five
to
ten
minutes.
In
this
event,
the
thermal
cutout
switch
will
disconnect
the
power
and
keep
it
disconnected
until
the
temperature
drops
to
a
safe
level.
Power
Requirements
Unless
tagged
otherwise,
this
instrument
is
connected
at
the
factory
for
operation
at
105
to
125
volts,
50
to
60
cycles
AC
(117
volts
nominal.)
However,
provisions
are
made
for
easy
conversion
to
operate
at
210
to
250
volts,
50
to
60
cycles
(234
volts
nominal).
The
power
transformer
has
eight
primary
terminals
making
possible
operation
from
six
different
input
voltages.
The
Type
585
can
be
operated
from
primary
voltages
of
110,
117,
124,
220,
234
and
248
volts,
50
or
60
cycles.
Figure
2-1
illustrates
proper
connections
to
permit
operation
on
any
one
of
the
listed
voltages.
Fan
Connections
When
connecting
the
power
transformer
for
operation
with
a
supply
voltage
of
200
volts
or
more,
be
sure
to
leave
the
fan
wires
connected
at
terminals
1
and
3
of
the
primary.
This
is
to
insure
that
the
fan
motor
will
not
be
supplied
more
than
125
volts.
Figure
2-2
shows
a
typical
high
line
voltage
connection
assuring
proper
fan
operation
when
the
line
voltage
is
248
volts.
Fig.
2-1.
The
power
transformer
has
two
extra
windings
permitting
nominal
primary
voltages
of
1
10,
1
17,
12 ,
220,
23 ,
2 8
volts,
50
or
60
cycle
operation.
2-1
Operating
Instructions
—
Type
585
Fuse
Data
Fuse
data
is
silk-screened
on
the
rear
panel
of
the
instru
ment
adjacent
to
the
fuse
holder.
Use
only
the
recom
mended
fuses
for
maximum
over-current
protection.
proper
contact.
Tighten
the
plug-in
unit
locking
control
to
hold
the
unit
securely
in
place
and
turn
the
oscilloscope
INTENSITY
control
fully
counterclockwise.
Connect
the
power
cord
to
the
rear
of
the
instrument
and
to
the
power
line
and
place
the
POWER
switch
in
the
ON
position.
OSCILLOSCOPE
OPERATING
INFORMATION
If
you
are
familiar
with
other
Tektronix
Oscilloscopes,
you
should
have
very
little
difficulty
in
understanding
the
opera
tion
of
the
Type
585.
The
function
of
many
controls
is
the
same
as
the
function
of
corresponding
controls
on
other
Tektronix
instruments.
Plug-In
Units
The
Type
585
Oscilloscope
is
designed
to
operate
with
the
Tektronix
Eighty
Series
Plug-In
Units.
In
addition,
the
Type
81
Plug-In
Adapter
permits
use
of
all
of
the
Tektronix
Letter-Series
plug-in
units.
The
particular
plug-in
unit
used
must
be
selected
to
satisfy
the
application
requirements.
In
selecting
the
plug-in
unit
for
any
particular
application,
consider
the
bandpass,
sensitivity,
the
type
of
input
required
for
that
application.
The
plug-in
units
now
available
and
those
presently
under
development
will
satisfy
the
require
ments
for
most
applications.
Preparation
for
Use
When
the
plug-in
unit
to
be
used
has
been
selected,
insert
the
unit
into
the
plug-in
compartment
of
the
Type
585
oscillo
scope
and
press
firmly
to
insure
that
the
connectors
make
Fig.
2-2.
A
typical
high-voltage
fan
connection,
using
as
an
example
the
wiring
for
a
2 8-volt
supply.
Time
Delay
A
time
delay
relay
used
in
the
Type
585
Oscilloscope
delays
operation
of
the
instrument
for
approximately
25
seconds
after
the
POWER
switch
is
turned
on
to
allow
a
brief
tube
warmup
period.
The
delay
allows
the
tubes
sufficient
time
to
heat
before
the
d
c
operating
voltages
are
applied.
If
the
ac
power
is
off
for
only
an
instant,
the
normal
25
second
delay
will
occur
before
the
instrument
returns
to
full
operation.
This
delay
will
occur
regardless
of
whether
the
ac
power
is
off
because
of
momentary
power
failure
or
is
turned
off
with
the
POWER
switch.
INTENSITY
Control
The
INTENSITY
control
is
used
to
adjust
the
brightness
of
the
oscilloscope
display.
This
permits
compensation
for
changes
in
brightness
resulting
from
changes
in
the
sweep
or
triggering
rate.
The
INTENSITY
control
is
rotated
clock
wise
to
increase
brightness
and
counterclockwise
to
decrease
brightness.
Care
must
be
taken
when
using
the
INTENSITY
control
that
the
brightness
is
not
turned
up
to
the
point
where
the
face
of
the
cathode-ray
tube
is
permanently
damaged.
If
the
intensity
of
the
beam
is
turned
up
too
far,
the
phosphor
on
the
face
of
the
c
rt
may
be
burned.
FOCUS
and
ASTIGMATISM
Controls
The
FOCUS
and
ASTIGMATISM
controls
operate
together
to
allow
a
sharp,
clearly
defined,
spot
or
trace
to
be
ob
tained.
FOCUS
adjustments
need
to
be
made
after
each
change
of
the
INTENSITY
control.
For
slow
sweep
rates,
proper
adjustment
of
the
ASTIGMATISM
control
will
produce
a
circular
spot,
then
adjust
the
FOCUS
control
for
as
small
a
spot
as
possible.
For
fast
sweep
rates
with
low
repetition
rates
that
produce
a
dim
trace,
best
focus
can
be
obtained
by
looking
at
the
waveform
and
simultaneously
adjusting
the
ASTIGMATISM
and
the
FOCUS
control.
There
is
a
maxi
mum
setting
of
the
INTENSITY
control
above
which
a
good
focus
is
not
possible.
Best
definition
for
all
signals
will
be
obtained
by
using
the
horizontal
center
six
centimeters
of
the
graticule.
Graticule
and
Scale
Illumination
Control
The
graticule
used
with
the
Type
585
Oscilloscope
is
accurately
marked
with
10
horizontal
and
4
vertical
1-
centimeter
divisions
with
2-millimeter
markings
on
the
center
lines.
These
graticule
markings
in
conjunction
with
the
cali
brated
scale
factors
of
the
Type
585
allow
time
and
voltage
measurements
to
be
made
directly
from
the
oscilloscope
crt.
The
graticule
is
illuminated
by
two
lamps
located
at
the
top
edge
of
the
graticule.
This
illumination
can
be
con
trolled
so
that
the
graticule
markings
appear
either
red
or
2-2
A
A
Operating
Instructions
—
Type
585
Attenuator
Tip
Connected
To
The
Signal
Source
Probe
Ground
Lead
Connected
To
The
Chassis
Attenuator
Head
Fig.
2-3.
Proper
connection
of
the
P80
Probe
to
a
coaxial
system
including
attenuator
and
termination.
white,
as
desired.
The
graticule
markings
are
changed
from
one
color
to
the
other
by
removing
the
graticule
cover
and
rotating
the
graticule
through
180°
about
an
axis
through
the
center
of
the
graticule.
As
a
general
rule,
white
graticule
markings
are
superior
to
red
for
photographic
purposes.
The
brightness
of
the
graticule
markings
is
adjusted
by
the
SCALE
ILLUM
control
located
just
under
the
oscilloscope
crt.
Rotating
the
control
clockwise
increases
the
brightness
of
the
markings;
rotating
the
control
counterclockwise
de
creases
the
brightness.
For
convenience
in
photographic
work,
the
SCALE
ILLUM
control
is
marked
in
approximate
f-stops.
The
f-stop
num
bers
are
intended
for
working
with
35
mm
TRI-X
film
and
Polaroid
Type
47
film,
with
a
one
second
exposure.
Polaroid
Type
44
requires
ten
seconds
exposure.
A
few
practice
shots
will
help
you
get
consistently
good
pictures.
White
graticule
markings
should
be
used,
and
the
trace
brightness
must
approximately
match
that
of
the
graticule
markings.
Positioning
Controls
Three
controls
are
used
with
the
Type
585
Oscilloscope
to
allow
the
trace
to
be
positioned
to
any
point
on
the
crt.
Two
of
these
controls
are
used
to
set
the
horizontal
position
of
the
trace.
The
third
control
is
used
to
set
the
vertical
position
of
the
trace
and
is
located
on
the
front
panel
of
the
plug-in
unit
used
with
the
oscilloscope.
The
two
HORIZONTAL
POSITION
controls
move
the
trace
to
the
right
when
they
are
rotated
in
the
clockwise
direction
and
to
the
left
when
they
are
rotated
counterclockwise.
The
combination
of
the
two
controls
has
a
total
positioning
range
of
approximately
12
centimeters
with
the
sweep
magnifier
off
or
approximately
60
centimeters
with
sweep
magnifier
on.
The
black
HORIZONTAL
POSITION
control
has
approx
imately
three
times
the
range
of
the
red
ERNIER
control.
The
fine
range
of
adjustment
of
the
ERNIER
control
makes
this
control
particularly
useful
whenever
fine
horizontal
posi
tioning
is
required,
as
for
example,
when
the
sweep
magni
fier
is
used.
The
vertical
positioning
control
has
sufficient
range
to
allow
the
trace
to
be
positioned
completely
off
the
top
or
bottom
of
the
crt
or
to
any
intermediate
point.
The
trace
moves
up
when
the
control
is
rotated
clockwise
and
down
when
the
control
is
rotated
counterclockwise.
Four
small
indicator
lights
located
just
above
the
crt
indi
cate
the
position
of
the
spot
or
trace.
When
one
of
these
lamps
is
lit,
it
indicates
that
the
trace
is
off-centered
in
the
direction
of
the
arrow.
These
four
lights
allow
you
to
posi
tion
the
spot
to
the
center
of
the
crt
even
though
the
in
tensity
is
so
low
that
the
trace
is
not
visible.
When
the
sweep
is
running,
the
spot
moves
from
the
left
to
the
right
and
may
cause
both
horizontal
lamps
to
light
each
time
the
sweep
runs.
Also
a
vertical
input
signal
may
cause
both
vertical
lamps
to
remain
lit.
2-3
PROBE
Operating
Instructions
—
Type
585
Input
Signal
Connections
Input
signals
to
the
oscilloscope
are
carried
to
the
input
connector
of
the
Type
80
Plug-In
Unit
through
the
P80
high-frequency
probe.
The
Type
585,
Type
80
Plug-In
Unit
and
P80
Probe
make
up
a
basic
DC
to
95
megacycle
system.
The
gain
of
this
combination
is
calibrated
with
a
vertical
deflection
of
0.1
volts
per
centimeter
at
the
input
to
the
probe.
NOTE
A
second
basic
wide-band
system
includes
the
Type
82
Dual-Trace
Plug-In
Unit
with
a
sensitivity
of
0.1
volts
per
centimeter.
Special
probes
are
provided
with
the
Type
82,
permitting
easy
con
nection
into
any
circuit.
A
higher
gain
of
0.01
volts
per
centimeter
is
available
with
slightly
reduced
bandpass.
The
rest
of
this
manual
was
written
for
use
of
the
Type
80
Plug-In
and
P80
Probe.
Most
of
the
conditions
apply
to
the
Type
82,
except
the
input
resistance
and
capacitance.
See
the
Type
82
Manual
for
additional
details.
A
third
system
using
the
Type
81
Plug-In
Adapter
makes
possible
the
use
of
all
Tektronix
Letter-Series
plug-in
units.
When
using
a
Type
81
Plug-In
Adapter
Unit
with
a
Type
K
or
Type
L
Plug-In
Unit,
the
system
bandpass
is
de
to
3
db
down
at
30
M
c
.
When
using
the
Type
80
Plug-In
Unit
with
the
P80
Probe
in
cases
where
the
amplitude
of
the
input
signal
is
suffi
cient
to
deflect
the
spot
off
the
screen,
the
vertical
size
of
the
displayed
waveform
can
be
reduced
to
a
usable
level
by
using
one
of
the
5
fixed
attenuators
supplied
with
the
P80
Probe.
The
attenuators
connect
directly
to
the
front
of
the
probe
and
provide
attenuation
factors
of
2,
5,
10,
20,
and
50
and
vertical
deflection
factors
of
from
0.1
volt
per
centimeter
without
an
attenuator,
to
5
volts
per
centi
meter.
The
fixed
attenuators
supplied
with
the
P80
Probe
can
be
used
only
one
at
a
time.
In
cases
where
additional
attenua
tion
is
required,
a
standardized
attenuator
is
available
that
permits
the
stacking
of
any
one
regular
attenuator
on
a
standardized
attenuator.
The
standardized
attenuator
pro
vides
attenuation
of
10
when
used
alone.
If
the
XI
0
Stand
ardized
Attenuator
is
used
with
a
regular
2-1
attenuator,
the
total
attenuation
will
then
be
20.
See
the
Accessories
section
of
this
manual
for
part
numbers
and
ordering
in
formation.
Accuracy
of
the
deflection
factors
of
any
of
the
attenu
ators
or
attenuator
combinations
can
be
checked
by
connec-
ing
the
attenuator
tip
to
the
CAL.
OUT
connector
and
com
paring
the
resulting
deflection
against
the
Amplitude
Cali
brator
voltage.
The
calibrated
vertical
deflection
factors
and
the
graticule
markings
permit
accurate
voltage
measurements
to
be
made
directly
from
the
oscilloscope
crt.
The
procedures
for
making
voltage
measurements
are
described
in
the
Applications
sec
tion
of
this
manual.
When
connecting
the
oscilloscope
to
the
signal
source,
consider
the
loading
effect
produced
by
the
probe
on
the
signal
source.
At
low
frequencies
the
input
impedance
of
the
P80
probe
is
100
kilohms
which
in
most
cases
limits
the
loading
effect
to
a
negligible
amount.
However,
as
the
frequency
of
the
input
signal
is
increased
and
approaches
the
upper
limit
of
the
oscilloscope
passband,
the
input
im
pedance
of
the
probe
drops
to
about
150
ohms.
The
load
ing
effect
of
the
probe
under
these
conditions
can
be
con
siderable,
particularly
when
the
input
signal
is
connected
from
a
high
impedance
source.
Loading
may
be
sufficient
to
adversely
affect
operation
of
the
signal
source.
Loading
of
the
signal
source
can
be
reduced
through
use
of
an
attenuator
head
on
the
P80
Probe.
However,
this
also
has
the
effect
of
reducing
the
vertical
amplitude
of
the
displayed
waveform.
Consequently,
the
use
of
an
attenu
ator
head
must
be
a
compromise
between
reducing
the
loading
effect
and
reducing
the
signal
amplitude.
In
no
way
can
the
loading
effect
be
completely
eliminated.
You
must
consider
this
effect
when
evaluating
information
ob
tained
from
the
oscilloscope.
When
observing
signals
from
low
impedance
sources,
loading
will
usually
be
negligible.
To
prevent
reflection
of
high
frequency
waveforms
and
resulting
waveform
distortion,
all
cables
and
high
frequency
signal
sources
should
be
terminated
in
their
characteristic
Type
P80
Probe
Fig.
2- .
Accessories
required
to
connect
a
50
O
system
to
the
Type
80
Probe.
The
Attenuator
is
optional.
2-
50-ohm
Cable
with
GR
Connector,
017-501
50-ohm
10:1
Atten.,
010-31
50-ohm
Termination,
013-033
BNC
to
UHF
Adapter,
103-032
GR
to
BNC
Adapter,
017-02
Operating
Instructions
—
Type
585
impedance.
This
can
be
done
by
connecting
the
proper
termination
resistor
at
the
input
to
the
probe.
Special
adapt
ers
are
available
which
permit
direct
connections
of
the
probe
to
Type
N,
BNC,
UHF,
and
GR
TYPE
874
connectors.
See
the
Accessories
section
of
this
manual
for
part
numbers
and
ordering
information.
Compensating
Attenuator
Heads
To
prevent
waveform
distortion,
attenuator
heads
must
be
compensated
for
high
frequency
losses.
The
compensation
should
be
checked
each
time
an
attenuator
head
is
used.
The
adjustment
is
made
by
displaying
a
square
wave
with
a
risetime
of
03
microsecond
or
faster
on
the
oscilloscope
and
adjusting
the
compensation
control
to
eliminate
any
distortion
occurring
in
the
leading
edge
of
the
waveform.
The
50-1
attenuator
head
can
be
successfully
compensated
using
the
oscilloscope
calibrator
with
its
1.0
microsecond
risetime.
The
adjustment
should
be
made
with
the
probe
input
selector
in
the
DC
position.
The
compensation
control
is
a
small
plastic
screw
located
in
the
body
of
the
attenu
ator
head
near
the
tip
end.
Attenuator
compensation
is
sensitive
to
pressures
applied
laterally
at
the
tip.
Be
sure
to
apply
the
probe
and
attenu
ator
combination
to
any
test
point
directly
without
side
pressure.
Input
Selection
The
Input
Selector
switch
on
input
waveforms
to
be
applied
scope
(d
c
coupled)
or
to
be
the
Type
P80
Probe
permits
either
directly
to
the
oscillo-
applied
to
the
oscilloscope
Fig.
2-5.
Oscilloscope
in
triggered
sweep
operation,
waveform
ladder
diagram
showing
sequence
of
operations
from
input
signal,
triggering
signal,
the
sweep,
and
the
ert
display.
through
a
.01
f
150
volt
capacitor
(ac
coupled).
The
input
Selector
switch
should
be
placed
in
the
DC
position
when
low
frequency
waveforms
are
observed,
to
prevent
distortion
and
attenuation.
The
AC
position
should
be
used
to
elimi
nate
large
d
c
components
from
waveforms
applied
to
the
probe.
The
AC
position
blocks
the
d
c
component
of
a
wave
form
and
permits
the
variable
component
of
the
waveform
to
be
applied
to
the
oscilloscope.
HORIZONTAL
DEFLECTION
SYSTEM
The
Type
585
Oscilloscope
features
two
independent
time
base
units:
Time
Base
A
and
Time
Base
B.
Either
of
the
two
time
bases
may
be
displayed
on
the
c
rt
at
any
time.
Controls
affecting
Time
Base
A
and
Time
Base
B
operation
are
in
the
correspondingly
labeled
blocks
on
the
front
panel.
The
HORIZONTAL
DISPLAY
switch
determines
which
time
base
is
used
and
the
type
of
display
to
be
presented.
Time
Base
A
is
selected
when
the
HORIZONTAL
DISPLAY
switch
is
in
position
A;
Time
Base
B
is
selected
when
the
switch
is
in
position
B.
Sweep
Rates
Time
Base
A
has
24
accurately
calibrated
sweep
rates
ranging
from
0.05
microsceond
to
2
seconds
per
centimeter.
Calibrated
sweep
rates
are
obtained
only
when
the
ARI
ABLE
TIME/CM
control
is
snapped
in
the
fully
clockwise
position.
The
ARIABLE
TIME/CM
control
permits
the
sweep
rate
to
be
varied
continuously
between
0.05
microsecond
and
approximately
5
seconds
per
centimeter.
All
sweep
rates
obtained
with
the
ARIABLE
TIME/CM
controls
in
any
position
but
fully
clockwise
are
uncalibrated.
Uncalibrated
sweep
rates
are
indicated
when
the
UNCALIBRATED
lamp
is
lit.
Time
Base
B
has
sweep
rates
ranging
from
2
microseconds
to
1
second
per
centimeter
in
18
steps.
There
is
no
ARIABLE
TIME/CM
control
for
Time
Base
B.
The
red
LENGTH
control
adjusts
the
sweep
length
between
approximately
10
and
4
centimeters.
Triggered
Operation
For
most
uses
of
the
oscilloscope
a
stable
display
of
some
waveform
is
required.
To
accomplish
this
the
oscilloscope
can
be
operated
so
that
the
horizontal
sweep
starts
at
a
given
point
on
the
displayed
waveform.
This
is
known
as
“
triggered
”
operation.
For
the
present,
we
will
refer
to
the
starting
of
the
sweep,
at
the
left
side
of
the
graticule,
as
"triggering"
the
sweep.
Triggered
operation
is
useful
for
observing
a
waveform
which
may
occur
only
once,
or
which
may
occur
at
random
intervals.
For
any
of
these
uses,
the
oscilloscope
can
be
used
in
such
a
way
that
each
horizontal
sweep
is
triggered
by
some
waveform
other
than
the
one
being
observed,
but
which
bears
a
time
relationship
to
the
observed
waveform.
The
waveform
used
to
start
the
horizontal
sweep
is
called
the
“
triggering
signal",
whether
it
is
the
waveform
being
observed,
or
some
other
waveform.
The
instructions
that
follow
tell
you
how
to
select
this
signal.
They
also
contain
information
on
triggering
according
to
various
modes,
de
pending
on
the
nature
of
the
triggering
signal.
2-5
Operating
Instructions
—
Type
585
Fig.
2-6.
The
triggering
signal
source
is
selected
by
the
TRIGGERING
SOURCE
switch.
Selecting
the
Triggering
Signal
1.
To
trigger
either
the
Time
Base
A
or
B
sweep
from
the
waveform
being
observed,
set
the
appropriate
TRIGGER
ING
SOURCE
knob
to
INT.
1.
To
trigger
the
sweep
from
the
power-line
wave
(as
in
the
case
when
observing
a
waveform
which
has
a
time
relationship
to
the
power-line
frequency),
set
the
TRIGGER
ING
SOURCE
knob
to
LINE.
3.
To
trigger
the
sweep
from
some
external
waveform
(one
having
a
time
relationship
to
the
waveform
being
observed),
connect
the
source
of
the
triggering
signal
to
the
TRIGGER
INPUT
connector
and
set
the
TRIGGERING
SOURCE
knob
to
EXT.,
DC
or
AC.
When
the
frequency
of
the
external
triggering
signal
is
below
about
15cps,
the
TRIGGERING
SOURCE
switch
must
be
placed
in
the
EXT.
DC
position
to
obtain
stable
triggering.
Below
15cps,
the
coupling
circuit
in
the
EXT.
AC
position
attenuates
the
input
signal,
thereby
making
it
difficult
or
impossible
to
obtain
reliable
operation.
When
in
doubt,
the
proper
setting
of
the
TRIGGERING
SOURCE
switch
can
be
chosen
by
observing
which
position
produces
the
best
triggering.
Refer
to
Fig.
2-6
for
a
pictorial
pre
sentation
of
the
various
triggering
source
options.
Selecting
the
Triggering
Slope
The
horizontal
sweep
can
be
triggered
on
either
the
rising
(
+
slope)
or
falling
(
—
slope)
portion
of
the
triggering
waveform.
This
is
determined
by
the
position
of
the
TRIG
GER
SLOPE
switch.
When
the
switch
is
in
the
+
position,
the
sweep
is
triggered
on
the
rising
portion
of
the
trigger
ing
waveform;
when
the
TRIGGER
SLOPE
switch
is
in
the
—
position,
the
sweep
is
triggered
on
the
falling
portion
of
the
waveform
(see
Figure
2-8).
In
many
applications
the
triggering
slope
is
not
important
since
triggering
on
either
slope
will
provide
a
display
which
is
suitable
to
the
application.
However,
in
other
cases,
such
as
pulse
risetime
or
falltime
measurements,
the
trigger
ing
slope
is
very
important
and
must
be
selected
properly
if
you
are
to
obtain
a
useful
display.
To
accurately
measure
the
risetime
of
a
pulse
it
is
necessary
to
trigger
the
sweep
on
the
rising
portion
of
the
waveform.
Also,
to
observe
the
fall
of
a
pulse
it
is
necessary
to
trigger
the
sweep
on
the
falling
portion
of
the
waveform.
In
either
case,
selection
of
the
wrong
triggering
slope
will
make
it
difficult
or
im
possible
to
observe
the
portion
of
the
waveform
to
be
checked.
When
displaying
sine
waves
above
50
megacycles
the
Time
Base
A
trigger
circuit
may
produce
a
stable
display
on
only
one
slope.
Be
sure
to
try
both
the
+
and
—
posi
tions
of
the
A
TRIGGER
SLOPE
switch
for
the
best
triggering.
2-6
Operating
Instructions
—
Type
585
Sweep
Triggers
On
+
Slope
Trigger
Slope
Waveforms
Obtained
With
The
Triggering
Level
Control
Set
In
The
-
Region
Sweep
Triggers
On
—
Slope
Trigger
Slope
+
On
—
Slope
+
Fig.
2-7.
Effects
of
the
TRIGGERING
LEVEL
and
TRIGGER
SLOPE
controls.
2-7
Operating
Instructions
—
Type
585
Fig.
2-8.
Effects
on
the
oscilloscope
display
produced
by
-
and
—
settings
of
the
TRIGGER
SLOPE
switch.
Using
the
STABILITY
and
TRIGGERING
LEVEL
Controls
In
virtually
every
triggering
application,
satisfactory
opera
tion
can
be
obtained
with
the
STABILITY
control
in
the
fully
counterclockwise,
PRESET,
position.
This
setting
has
the
ad
vantage
that
no
further
adjustment
of
the
STABILITY
control
is
required
when
switching
from
one
triggering
signal
to
another.
However,
if
it
becomes
difficult
to
obtain
stable
triggering
with
the
STABILITY
control
at
PRESET,
it
will
be
Fig.
2-9.
TRIG.
SENS,
control
location.
necessary
to
adjust
the
control
for
proper
triggering.
Also
it
may
be
necessary
to
adjust
the
PRESET
ADJUST
control
as
described
in
the
Calibration
section
of
this
manual.
To
adjust
the
STABILITY
control,
place
the
TRIGGERING
LE EL
control
in
the
fully
counterclockwise
position.
Then
rotate
the
STABILITY
control
slowly
clockwise
until
a
trace
appears
on
the
c
rt.
The
correct
setting
is
obtained
by
rotat
ing
the
control
counterclockwise
three
to
five
degrees
past
the
point
where
the
trace
disappears.
The
TRIGGERING
LE EL
control
determines
the
point
on
the
triggering
waveform
where
triggering
occurs.
Rotating
the
control
clockwise
causes
the
sweep
to
trigger
at
more
positive
points
on
the
waveform
while
rotating
the
control
counterclockwise
causes
the
sweep
to
trigger
at
more
nega
tive
points.
Setting
the
TRIGGERING
LE EL
control
at
0
will
cause
the
sweep
to
start
at
approximately
the
average
voltage
point
of
the
waveform.
The
+
arid
—
markings
for
the
TRIGGERING
LE EL
con
trol
should
not
be
confused
with
similar
markings
for
the
TRIGGER
SLOPE
switch.
The
markings
on
the
TRIGGER
SLOPE
switch
indicate
only
whether
triggering
occurs
on
the
rising
or
falling
portion
of
the
triggering
waveform.
The
markings
for
the
TRIGGERING
LE EL
control
indicate
whether
triggering
occurs
on
the
upper
or
lower
portion
of
the
waveform.
2-8
Operating
Instructions
—
Type
585
OUTPUT
OF
THE
EXTERNAL
EQUIPMENT
IS
APPLIED
TO
THE
OSCILLOSCOPE
INPUT.
FREE-RUNNING
SWEEP
GATE
OR
SAWTOOTH
WAVE
FORMS
ARE
CONNECTED
TO
THE
EXTERNAL
EQUIPMENT.
EQUIPMENT
TO
BE
TRIGGERED
OR
SYNCHRONIZED
BY
THE
OSCILLOSCOPE.
in
some
applications
it
may
be
more
desirable
to
reverse
the
process
and
initiate
the
input
waveform
through
use
of
a
periodically
recurrent
waveform
from
the
oscilloscope.
In
this
type
of
application
the
sweep
is
caused
to
free-run
and
an
output
from
either
the
-(-GATE
OUT
or
SAW
TOOTH
A
front
panel
connectors
is
used
to
trigger
or
synchronize
the
input
waveform.
The
Time
Base
B
may
be
used
as
a
trigger-rate-generator
while
the
Time
Base
A
is
used
in
its
normal
fashion.
Either
Time
Base
can
be
made
to
free
run
by
rotating
its
STABILITY
control
fully
clockwise.
Under
these
conditions
the
sweep
runs
at
a
rate
determined
by
the
setting
of
the
TIME/CM
controls.
In
this
application
it
is
advisable
to
place
the
TRIGGER
ING
SOURCE
switch
in
its
EXT.
position
to
prevent
the
vertical
signal
from
producing
any
interference
or
jitter.
In
addition
to
providing
the
means
for
triggering
or
syn
chronizing
an
external
piece
of
equipment,
a
free-running
sweep
also
provides
a
convenient
reference
trace
on
the
oscilloscope
screen
without
requiring
an
input
signal.
The
trace
can
then
be
used
to
establish
a
voltage
reference
line.
Fig.
2-10.
Using
the
Gate
or
Sawtooth
output
waveforms
to
syn
chronize
or
trigger
external
equipment.
Time
Base
A
Synchronized
High
Frequency
Operation
If
it
is
necessary
to
observe
a
high
frequency
repetitive
waveform,
too
low
in
amplitude
to
produce
a
stable
trig
gered
display,
a
special
adjustment
can
be
made
to
permit
synchronizing
the
Type
585
with
the
low
level
signal.
Remove
the
right
side
panel
of
the
oscilloscope.
Find
R47,
the
TRIG.
SENS,
control,
located
right
under
the
forward
carrying
handle.
Note
its
setting,
then
rotate
it
fully
clockwise.
(Figure
2-9).
With
the
TRIG.
SENS,
control
fully
clockwise,
the
tunnel
diode
trigger
regenerator
will
oscillate
at
certain
settings
of
the
front
panel
TRIGGERING
LE EL
control.
This
mode
of
operation
permits
the
vertical
information
to
synchronize
the
tunnel
diode
oscillation
rate
and
cause
the
sweep
gen
erator
to
present
a
stable
display.
When
synchronizing
the
sweep,
place
the
STABILITY
control
in
its
PRESET
position,
then
apply
the
vertical
signal,
and
rotate
the
TRIGGERING
LE EL
control
for
a
stable
presentation.
Note
that
once
the
internal
TRIG.
SENS,
control
has
been
rotated
clockwise,
the
tunnel
diode
trigger
regenerator
can
be
made
to
cause
a
sweep
at
some
positions
of
the
TRIG
GERING
LE EL
control
in
the
absence
of
a
triggering
signal.
It
is
best
to
restore
the
TRIG.
SENS,
control
to
its
proper
triggerable
position
you
previously
noted,
and
as
described
in
the
Calibration
section
of
this
manual.
Replace
the
right
side
panel
once
synchronized
operation
is
completed.
Free-Running
Sweep
Operation
of
either
A
or
B
Sweep
In
the
usual
oscilloscope
application,
the
sweep
is
trig
gered
or
synchronized
by
the
input
waveform.
However,
Single
Sweep
Operation
The
usual
oscilloscope
display
formed
by
a
repetitive
sweep
is
best
for
most
applications.
However,
in
applica
tions
where
the
displayed
waveform
is
not
repetitive
or
varies
in
amplitude,
shape,
or
time
interval,
a
repetitive
sweep
produces
a
jumbled
display.
When
observing
a
waveform
of
this
type,
it
is
usually
best
to
use
a
single
sweep
presentation.
The
Type
585
Oscilloscope
permits
a
single
sweep
pre
sentation.
The
single
sweep
feature
is
selected
by
placing
the
HORIZONTAL
DISPLAY
switch
in
the
"A"
SINGLE
SWEEP
position.
In
this
position,
only
Time
Base
A
can
produce
a
single
sweep.
The
RESET
button
controls
the
operation
of
the
single
sweep.
When
the
A
Sweep
STABILITY
control
is
set
fully
clock
wise,
a
single
sweep
runs
immediately
each
time
the
RESET
button
is
depressed.
When
the
STABILITY
control
is
set
for
triggered
operation,
the
single
sweep
does
not
occur
when
the
RESET
button
is
depressed
until
a
triggering
signal
is
applied.
Instead
the
READY
lamp
lights
to
indicate
that
the
sweep
is
ready
to
be
triggered.
When
a
triggering
signal
occurs,
the
sweep
runs
once
and
the
READY
light
goes
out.
Each
time
the
RESET
button
is
depressed
the
procedure
is
repeated.
When
operating
the
Type
585
in
the
single
sweep
mode
the
apparent
brilliance
of
the
crt
trace
will
be
less
than
dur
ing
repetitive
sweep
operation.
This
is
due
to
both
the
crt
phosphor
and
your
eye
persistence
making
a
repetitive
sweep
look
brighter
than
each
individual
sweep
is.
In
an
attempt
to
increase
the
single
sweep
brilliance
you
may
turn
up
the
intensity
control
too
high.
There
is
a
point
(that
varies
a
bit
between
different
instruments)
of
maximum
intensity
above
which
a
good
focus
can
not
be
obtained.
So
to
get
the
best
writing
rate
during
single
sweep
work,
first
be
sure
that
the
intensity
is
within
the
range
permitting
small
spot
size
and
good
focus.
2-9
Operating
Instructions
—
Type
585
Fig.
2-11.
Comparison
of
single
sweep
and
repetitive
sweep
presentations
of
a
damped
sine
wave.
Note
the
jumbled
display
produced
by
the
repetitive
sweep
presentation.
Delayed
Sweep
Using
the
Type
585
Oscilloscope,
the
start
of
the
hori
zontal
sweep
can
be
delayed
for
a
period
of
from
1
micro
second
to
10
seconds
after
application
of
the
triggering
waveform.
This
is
done
through
simultaneous
use
of
Time
Base
A
and
Time
Base
B.
In
this
application
Time
Base
B
is
used
to
provide
the
accurate
time
delay
while
Time
Base
A
presents
a
normal
horizontal
sweep
at
the
end
of
the
delay
period.
The
duration
of
the
sweep
delay
is
controlled
by
the
TIME
BASE
B
TIME/CM
or
DELAY
TIME
switch
and
the
DELAY-TIME
MULTIPLIER
control.
The
delayed
sweep
feature
of
the
Type
585
Oscilloscope
can
be
used
in
a
number
of
special
applications
to
increase
the
versatility
of
the
instrument.
Such
applications
include
high
magnification
of
a
selected
portion
of
an
undelayed
sweep,
accurate
time
measurements,
and
accurate
measure
ments
of
waveform
jitter.
Also,
it
is
possible
to
pick
off
and
display
any
desired
line
of
a
television
scan
or
to
check
pulse-time
modulation.
The
delayed
sweep
feature
is
readily
adaptable
to
a
great
number
of
other
applica
tions.
Fig.
2-12.
Calculating
delay
time.
The
delayed
sweep
feature
is
selected
when
the
HORI
ZONTAL
DISPLAY
switch
is
in
the
‘
A'
DEL'D
by
B'
posi
tion.
The
amount
of
delay
occur
r
ing
after
the
application
of
the
triggering
waveform
until
the
sweep
is
permitted
to
run,
is
indicated
directly
by
the
settings
of
the
TIME/CM
or
DELAY
TIME
switch
and
the
DELAY-TIME
MULTIPLIER
control.
The
settings
of
the
two
controls
are
multiplied
together
to
obtain
the
actual
delay
time.
For
example,
if
the
TIME/CM
or
DELAY
TIME
switch
is
set
at
1
MILLISEC
and
the
vernier
dial
of
the
DELAY-TIME
MULTIPLIER
control
indicates
6.75,
the
delay
time
is
6.75
milliseconds.
When
this
time
delay
has
elapsed,
one
of
two
events
will
occur
depending
upon
the
setting
of
the
Time
Base
A
STABILITY
control.
If
the
STABILITY
control
is
fully
clockwise,
the
hori
zontal
sweep
will
occur
immediately
at
the
end
of
the
delay
period.
This
is
the
mode
of
operation
most
com
monly
used
because
it
allows
obtaining
calibrated,
continu
ously
variable
delay
times.
If
the
Time
Base
is
adjusted
for
normal
triggered
operation,
the
horizontal
sweep
does
not
start
at
the
end
of
the
delay
period
but
waits
until
a
triggering
signal
is
received
to
the
“
A"
Trigger
Circuit.
The
triggering
pulse
may
be
either
the
input
waveform
to
the
oscilloscope,
or
an
externally
de
rived
triggering
signal.
The
triggering
slope,
source,
and
level
can
be
selected
in
the
same
manner
as
for
conventional
triggered
operation.
In
this
mode
of
operation,
the
delay
in
presentation
of
the
horizontal
sweep
is
not
continuously
vari
able
but
is
dependent
on
both
the
setting
of
the
delay
time
controls
and
the
occurrence
of
the
triggering
signal.
The
delay
plus
trigger'
mode
is
used
primarily
to
elimin
ate
jitter
from
the
displayed
waveform.
Since
the
sweep
is
usually
triggered
by
the
input
waveform,
inherent
jitter
in
the
waveform
is
eliminated
from
start
of
the
display.
When
using
the
‘
delay
plus
trigger'
mode,
the
READY
light
on
the
oscilloscope
front
panel
goes
on
when
the
delay
time
has
elapsed
to
indicate
that
the
sweep
is
ready
to
be
triggered.
When
the
sweep
is
triggered,
the
READY
2-10
Operating
Instructions
—
Type
585
light
then
goes
out.
If
the
sweep
is
triggered
immediately
at
the
completion
of
the
delay
time,
the
READY
light
may
not
appear
to
go
on.
When
the
HORIZONTAL
DISPLAY
switch
is
placed
in
the
'B'
INTENSIFIED
BY
A'
position,
you
can
obtain
a
normal
sweep
presentation
using
Time
Base
B.
If
all
other
controls
are
set
for
delayed
sweep
operation
and
the
Time
Base
A
TIME/CM
switch
is
set
for
a
faster
sweep
rate
than
the
Time
Base
B
TIME/CM
or
DELAY
TIME
control,
a
portion
of
the
sweep
will
be
brightened.
The
start
of
the
brightened
portion
indicates
the
start
of
the
delayed
sweep
and
the
length
of
the
brightened
portion
indicates
the
delayed
sweep
duration.
The
start
of
the
brightened
portion
can
be
positioned
left
or
right
with
the
DELAY-TIME
MULTIPLIER
control.
The
length
of
the
brightened
portion
can
be
ad
justed
with
the
Time
Base
A
TIME/CM
control.
Using
these
two
controls
it
is
possible
to
include
any
portion
of
the
displayed
waveform
in
the
brightened
area.
To
expand
a
portion
of
the
Time
Base
B
sweep
presenta
tion,
adjust
the
DELAY-TIME
MULTIPLIER
and
Time
Base
A
TIME/CM
controls
to
include
the
portion
you
wish
to
expand
in
the
brightened
area.
Then
place
the
HORIZONTAL
DIS
PLAY
switch
in
the
'A'
DEL
’
D
BY
B'
position.
This
expands
the
brightened
portion
to
the
full
width
of
the
crt.
The
amount
of
magnification
is
the
ratio
of
the
Time
Base
B
TIME/CM
or
DELAY
TIME
control
setting
to
the
Time
Base
A
TIME/CM
control
setting.
For
example,
if
the
Time
Base
B
TIME/CM
or
DELAY
TIME
switch
is
set
at
1
MILLISEC
and
the
Time
Base
A
TIME/CM
switch
is
set
at
1
SEC,
the
brightened
portion
of
the
sweep
is
magnified
horizontally
1,000
times.
Using
this
method,
practical
sweep
magnifica
tions
up
to
approximately
10,000
times
are
attainable.
At
times
when
using
the
delayed
sweep
to
obtain
high
magnification,
the
trace
may
appear
very
dim
because
of
low
duty
cycle.
In
many
of
these
cases
the
intensity
cannot
be
improved
sufficiently
with
the
INTENSITY
control.
How
ever,
the
intensity
can
often
be
increased
by
using
the
Time
Base
B
SWEEP
LENGTH
control
to
increase
the
duty
cycle.
To
set
the
SWEEP
LENGTH
control,
place
the
HORI
ZONTAL
DISPLAY
switch
in
the
"B"
INTENSIFIED
BY
"A"
position.
Adjust
the
SWEEP
LENGTH
control
until
the
sweep
stops
at
a
point
just
past
the
brightened
portion
of
the
trace.
Then
return
the
HORIZONTAL
DISPLAY
switch
to
the
"A
”
DEL'D
BY
“
B"
position.
Delayed
Trigger
A
delayed
triggering
pulse
can
be
obtained
from
the
front
panel
DEL'D
TRIG,
connector
any
time
from
.05
micro
seconds
to
10
seconds
after
the
start
of
a
sweep.
When
the
oscilloscope
is
set
for
delayed
sweep
operation
the
delayed
trigger
occurs
at
the
start
of
the
delayed
sweep.
The
delayed
triggering
p
ul
se
can
be
used
to
initiate
some
event
after
a
known
time
interval,
and
when
used
with
the
delayed
sweep,
permits
observation
of
the
resulting
event.
In
the
Time
Base
B,
'B'
INTENSIFIED
BY
'A',
'A'
DEL'D
BY
'B',
EXT.
X
1
,
and
EXT.
X
1
0
positions
of
the
HORIZON
TAL
DISPLAY
switch,
the
delayed
trigger
is
controlled
by
Time
Base
B.
In
the
other
two
positions
of
the
HORIZONTAL
DISPLAY
switch,
the
delayed
trigger
is
controlled
by
Time
Base
A.
To
obtain
a
delayed
trigger
from
either
time
base,
ad
just
the
appropriate
time
base
unit
for
triggered
operation
or
for
free
running
operation,
depending
upon
the
applica
tion.
The
delay
is
then
set
with
the
appropriate
TIME/CM
control
and
the
DELAY-TIME
MULTIPLIER.
(See
Figure
2-12.)
The
lights
above
the
DELAY-TIME
MULTIPLIER
control
indi
cate
which
time
base
unit
is
used
to
produce
the
delayed
trigger
with
each
setting
of
the
HORIZONTAL
DISPLAY
switch.
External
Horizontal
Input
For
special
applications
the
spot
can
be
deflected
hori
zontally
by
some
externally
derived
waveform
allowing
the
oscilloscope
to
plot
one
function
versus
another.
To
use
an
external
horizontal
input,
connect
the
externally
derived
waveform
to
the
HORIZ.
INPUT
connector
and
place
the
HORIZONTAL
DISPLAY
switch
in
either
X
1
or
X10
EXT.
position.
The
horizontal
deflection
factor
is
con
tinuously
variable
from
approximately
0.2
to
approximately
15
volts
per
centimeter
with
the
ARIABLE
10-1
control
and
the
HORIZONTAL
DISPLAY
switch.
Fig.
2-13.
Operation
of
the
sweep
magnifier.
Sweep
Magnifier
The
sweep
magnifier
allows
any
two-centimeter
portion
of
the
displayed
waveform
to
be
expanded
to
the
full
ten-
centimeter
width
of
the
graticule.
This
is
done
by
first
using
the
HORIZONTAL
POSITION
control
to
move
the
portion
of
the
display
to
be
expanded
to
the
center
of
the
graticule,
then
placing
the
5X
MAGNIFIER
switch
in
the
ON
position.
The
5X
MAGNIFIER
lamp
indicates
when
the
magnifier
is
on.
Any
portion
of
the
original
unmagnified
display
can
be
observed
by
rotating
the
HORIZONTAL
POSITION
con
trols.
In
magnified
sweep
operation,
the
sweep
rate
indicated
by
the
position
of
the
TIME/CM
control
is
divided
by
5
2-11
Operating
Instructions
—
Type
585
to
obtain
the
actual
time
required
for
the
spot
to
move
one
centimeter.
For
example,
if
the
TIME/CM
control
is
set
at
5
MILLISEC,
the
actual
time
per
centimeter
is
5
milliseconds
divided
by
5,
or
1
millisecond
per
centimeter.
(See
Figure
2-13).
Output
Waveforms
For
external
use,
the
Time
Base
A
sawtooth
sweep
wave
form
is
available
at
the
SAWTOOTH
A
connector
on
the
front
panel.
This
positive
going
waveform
starts
at
about
—
2
volts
and
rises
linearly
to
a
peak
amplitude
of
about
140
volts.
The
SAWTOOTH
A
waveform
is
d
c
coupled.
The
start
and
duration
of
the
rising
part
of
the
sawtooth
coincides
with
the
start
and
duration
of
the
Time
Base
A
horizontal
sweep
on
the
crt.
The
rate
at
which
the
saw
tooth
rises
is
determined
by
the
setting
of
the
Time
Base
A
TIME/CM
control.
Two
positive
rectangular
waveforms
are
available
at
the
+GATE
A
and
+
GATE
B
connectors.
These
waveforms
start
at
ground
and
rise
to
about
30
volts.
The
starting
time
and
duration
of
each
pulse
coincides
with
the
starting
time
and
duration
of
the
particular
Time
Base
A
or
B
sweep
generator
sweep
action.
Amplitude
Calibrator
The
AMPLITUDE
CALIBRATOR
provides
a
convenient
source
of
square
waves
of
known
amplitude
at
a
frequency
of
approximately
1
kc.
The
square-waves
are
used
primarily
to
compensate
attenuators
or
probes
and
to
verify
the
amplitude
calibration
of
the
vertical
deflection
system
of
the
oscilloscope
and
plug-in
unit.
Calibrator
square-waves
are
adjustable
from
0.2
millivolts
peak-to-peak
to
100
volts
peak-to-peak
in
18
steps.
The
amplitude
is
controlled
by
the
setting
of
the
AMPLITUDE
CALIBRATOR
switch
and
is
accurate
within
3%
of
the
AMPLITUDE
CALIBRATOR
switch
setting,
when
the
output
is
connected
to
a
high
impedance
load.
Intensity
Modulation
The
crt
display
of
the
Type
585
Oscilloscope
can
be
intensity
modulated
by
an
external
signal
to
display
addi
tional
information.
This
is
done
by
disconnecting
the
ground
ing
bar
from
the
EXTERNAL
CRT
CATHODE
connector
at
the
rear
of
the
instrument
and
connecting
the
external
signal
to
the
two
terminals.
To
make
very
accurate
time
measurements
from
the
crt
display,
you
may
intensity
modulate
the
beam
with
time
markers
and
make
measurements
directly
from
the
time
markers
presented
on
the
crt.
A
signal
of
approximately
+
2
to
+
25
volts
is
required
to
cut
off
the
crt
beam
from
normal
intensity.
Restore
the
grounding
bar
to
the
EXTERNAL
CRT
CATHODE
connector
during
normal
operation
to
avoid
uneven
trace
intensity
at
high
sweep
rates.
Dual-Trace
Displays
When
using
the
Type
81
Plug-In
Adapter
with
a
Type
CA
Plug-In
Unit,
and
the
Type
82
Plug-In
Unit
(without
the
Type
81)
two
separate
traces
may
be
obtained
on
the
face
of
the
crt.
This
permits
display
of
two
functions
simultane
ously.
Detailed
instructions
for
operating
either
plug-in
unit
are
contained
in
the
appropriate
Instruction
Manual.
2-12
Table of contents
Other Tektronix Test Equipment manuals
Tektronix
Tektronix TDS3000 Series User manual
Tektronix
Tektronix 7623A User manual
Tektronix
Tektronix KEITHLEY 2520 User manual
Tektronix
Tektronix 442 User manual
Tektronix
Tektronix 7844 User manual
Tektronix
Tektronix TDS7000 Series Manual
Tektronix
Tektronix 2225 User manual
Tektronix
Tektronix TAS 465 User manual
Tektronix
Tektronix DPO70000C Series User manual
Tektronix
Tektronix TriMode P7504 Manual
Tektronix
Tektronix 213 DMM User manual
Tektronix
Tektronix 222PS User manual
Tektronix
Tektronix P5100A Use and care manual
Tektronix
Tektronix 7B52 User manual
Tektronix
Tektronix 324 User manual
Tektronix
Tektronix Keithley 1754 User manual
Tektronix
Tektronix 434 User manual
Tektronix
Tektronix 442 User manual
Tektronix
Tektronix 321 A User manual
Tektronix
Tektronix 5110 User manual
Popular Test Equipment manuals by other brands
INTERSPIRO
INTERSPIRO Spiromatic test user manual
Hydrajaws
Hydrajaws 2008 operating instructions
Agilent Technologies
Agilent Technologies 8156A Operating and Programming Guide
Fluke
Fluke 5560A Service manual
Alcolizer
Alcolizer HH4 user manual
FitCheck Technology
FitCheck Technology FC6110 quick start guide
SW-Stahl
SW-Stahl 21010L instruction manual
SENSIRION
SENSIRION EK-P5 quick start guide
impact
impact BM255 user guide
LNI
LNI SONIMIX 3030 Series operating manual
Gossen MetraWatt
Gossen MetraWatt PROFITEST MBASE MTECH Short-form operating instructions
Cooper Crouse-Hinds
Cooper Crouse-Hinds FBT-3 quick start guide