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Tektronix 519 User manual

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INSTRUCTION
MIAN
UAL
IMPORTANT
Before
operating
this
instrument,
be
sure
to
remove
the
plastic
shipping
clamps
from
the
shock
mounts
of
the
amplifier
chassis.
These
clamps
should
be
saved
and
reinstalled
as
shown
in
the
sketch
if
the
instrument
is
to
be
shipped.
Be
sure
the
tongue
is
inserted
next
to
the
chassis
to
prevent
damage
to
the
shock
mount.
The
clamp
should
be
on
the
same
side
of
the
shock
mount
as
the
nut.
SHIPPING
CLAMP
~<a——
WITH
TONGUE
TOWARD
CHASSIS
RUBBER
MOUNT
CHASSIS
Tektronix,
Inc.
S.W.
Millikan
Way
@
P.
O.
Box
500
@
Beaverton,
Oregon
97005
@
Phone
644-0161
@
Cables:
Tektronix
070-243
rvice
rts
or
se
7S
°
wo
Ww
+
ice
.
s
and
pr
@i
Type
519
nTENSITY
ASTIGMATION:
SCALE
JLLUM.
WME
BASE
=
DELAY
nanosec
fom
"
&
sarenon
se
net
FOCUS
108
204,
‘a
Cod
1900,
RATE
GENERATOR
EXCL
ESISES
xeon?
a
-
STEP
GENERATOR
CALIBRAT
oe:
co
exten
REE
outs
Type
519
TRIGGER
PULSE
AMBLATUOE
on
SINE:
ng
id
vee
eco
SeeTeh
Pad
TYPE
S19
OSCILLOSCOPE
SERIAL
PRC
TRONI
INC,
CONTLANTD,
ORD
8
A
a
pret
AMPLITRDE
08
SNE
.
seveng
aoe
ba
HE
SYNE
FONETSOM
apy
aa
ene
a
mE
A
General
Information
The
Tektronix
Type
519:
Oscilloscope
is
a
wide-band
laboratory
instrument
designed
expressly
for
the
observation
and
measurement
of
high-frequency
phenomena.
Fast
linear
sweeps,
high
CRT
accelerating
potential,
excellent
triggering
sensitivity,
wide-band
trigger
system,
and
vertical
bandwidth
well
beyond
1000
megacycles
permit
accurate
repetitive
and
single-shot
displays
to
be
observed
and
photographed
from
fractional-nanosecond
signals.
An
inter-
nal
delay
line
in
the
vertical
channel
of
the
instrument
permits
display
of
the
leading
edge
of
the
signal
triggering
the
oscilloscope.
Sweep
delay
control
through
35
nano-
seconds
permits
viewing
signals
before
and
after
the
main
signal
event.
The
Type
519
incorporates
two
internal
waveform
gen-
erators.
An
adjustable
repetition-rate
fast-rise
pulse
gen-
erator
and
a
fast-rise
calibration-step
generator
supply
waveforms
which
can
be
used
to
check
the
calibration
of
the
oscilloscope
itself,
or
to
drive
external
devices.
These
wave-
form
generators
meet
most
requirements
to
complete
a
test
setup.
VERTICAL-DEFLECTION
SYSTEM
Vertical
Deflection
Factor
With
Type
T519P-A
CRT,
less
than
10
volts
per
cm.
Exact
CRT
deflection
factor
indicated
on
CRT
face
mask
of
each
instrument.
Passband
With Type
T519P-A
CRT,
dc
to
1000
megacycles
minimum
at
3-db
down.
Risetime
With
Type
T519P-A
CRT,
less
than
0.35
nanosecond
*
Input
Impedance
125
ohms.
*
1
nanosecond—=10°?
seconds.
®
SECTION
1
CHARACTERISTICS
Maximum
Allowable
Input
Power
to
Vertical
Channel
1.8
watts,
corresponding
to
15
volts
de
or
rms.
Maximum
Allowable
Peak
Signal
Amplitude
+100
volts.
Repeated
pulses
of
higher
voltage
may
dam-
age
the
125-ohm
signal
termination
resistor.
Internal
Signal
Delay
Approximately
45
nanoseconds,
fixed.
Voltage
Standing
Wave
Ratio
Nominally
1.25:1
to
1000
mc.
TRIGGER
Triggering
Signal
Sources
Internal
from
=
applied
signals,
internal
from
the
Rate
Gen-
erator,
internal
from
the
Calibration-Step
Generator,
and
external
from
-
trigger
inputs.
External
Triggering
Signal
Requirements
Pulse
amplitude:
20
millivolts.
Duration:
1
nanosecond
or
longer.
Maximum
permissible
external
triggering
signal:
+10
volts
peak, higher
with
external
attenuators.
Repeti-
tion
rate:
to
1000
mc.
Internal
Triggering
Signal
Requirements
Pulse
amplitude:
sufficient
signal
to
produce
a
2
trace-
width
deflection
on
the
screen
(approximately
200
mv).
Dur-
ation:
1
nanosecond
or
longer.
Repetition
rate:
to
1000
mc.
Countdown
A
sweep
is
obtained
for
each
trigger
signal
at
trigger
signal
frequencies
below
the
maximum
sweep
repetition
rate.
Trig-
gering
circuits
countdown
for
trigger
signal
frequencies
1-1
Characteristics—Type
519
higher
than
the
maximum
sweep
repetition
rate.
Sine-wave
trigger
requirements:
1
mc
to
1000
mc,
20
mv
peak-to-peak
external
trigger
input,
or
200
mv
peak-to-peak
signal
to
verti-
cal
input.
Pulse
Amplitude
or
Sync
Single
control
adjusts
pulse
triggering
level
or
high-fre-
quency
sync.
An
additional
control
provides
vernier
sync.
Delay
Sweep-start
delay
over
a
range
of
35
nanoseconds.
Per-
mits
waveform
to
be
positioned
horizontally
within
the
sweep,
to
display
a
selected
time
interval.
TIME
BASE
Sweep
Rates
Nine
Ranges:
2,
5,
10,
20,
50,
100,
200,
500,
and
1000
nano-
seconds
per
centimeter.
Accuracy
Typically
within
2%
of
indicated
rate on
all
ranges
except
the
2-nanosecond
range,
which
is
within
3%.
These
specifi-
cations
apply
to
the
entire
sweep
except
for
the
first
2
nano-
seconds
or
2
mm
(whichever
is
larger).
Single
Sweeps
Normal
or
single
sweeps
selected
by
front-panel
switch.
+
Trigger
Output
Greater
than
1-volt
pulse
into
50
ohms
upon
triggering.
Delayed
+
Gate
Greater
than
1-volt
gate
into
50
ohms
during
sweep;
delayed
with
respect
to
+
Trigger
Output
depending
on the
setting
of
the
sweep-delay
control.
RATE
GENERATOR
Risetime
Less
than
0.8
nanosecond
(0.5
nanosecond
typical).
Pulse
Repetition
Rate
3
cps
to
30
kc,
continuously
variable.
1-2
Pulse
Duration
10
nanoseconds
+
or
—
20%
at
the
50%
amplitude
points.
Output
Impedance
50
ohms.
Amplitude
Approximately
+15
volts.
CALIBRATION-STEP
GENERATOR
Risetime
Approximately
0.1
nanosecond.
Repetition
Rate
Adjustable
from 400
to
850
step
waveforms
per
second;
normally
operated
near
reed-switch
resonant
frequency
at
approximately
750
steps
per
second.
Output
Impedance
125
ohms.
Amplitude
Into
125
ohms,
0
to
10
volts.
Into
50
ohms
through
T50/T125
adapter,
0
to
1
volt.
Voltages
applied
to
both
impedances
are
continuously
variable
and
calibrated.
Uncalibrated
volt-
ages
up
to
50 volts
into
125
ohms.
Polarity
The
ouput
polarity
can
be
selected
by
a
front-panel
switch.
CATHODE
RAY
TUBE
Type
T519P-A
Phosphors
Type
P11
phosphor
standard
(recommended
for
single-shot
photographic
recording
at
fastest
sweep
rate).
Other
phos-
phors
available
only
on
special
request.
Usable
Viewing
Area
Two
centimeters
vertical,
six
centimeters
horizontal.
Accelerating
Voltage
24
kv.
Spot
Diameter
0.004
inch
(approximately
0.1
mm)
at
normal
intensity.
Deflection
Electrostatic.
Vertical
deflection
system
is
125-ohm
dis-
tributed-constant
delay
line.
Conventional
horizontal
deflec-
tion
plates.
CONSTRUCTION
AND
POWER
REQUIREMENTS
Construction
Single-unit
construction
with
light-weight
aluminum-alloy
chassis
and
four-piece
vinyl-finish
cabinet.
Side
panels,
top
and
bottom
panels
are
separately
removable.
Ventilation
Filtered
forced
air
with
protective
thermal
cutout
insures
safe
operating
temperatures.
Dimensions
Approximately
221%,"
high,
1434,”
wide,
and
251%,”
long.
Characteristics—Type
519
Power
Requirements
105
to
125
or
210
to
250
volts,
50
to
60
cycles,
approxi-
mately
650
watts.
ACCESSORIES
Information
on
accessories
for
use
with
this
instrument
is
included
at
the
rear
of
the
mechanical
parts
list.
1-3
Operating
Information—Type
519
INTENSITY
ASTIGMATISM
SCALE
ILLUM.
TYPE
S19
OSCILLOSCOPE
SERIAL
TEKTRONIX,
INC.
PORTLAND,
OREGON.
U.S.
A,
POSITIONING
VERTICAL
HORIZONTAL
AXIS
ROTATION
yas
TIME
BASE
NANOSEC
/CM
OPREK,
HI
O8ELT
1990.
20
NIN
sooo!
uate:
DELAYED
+
GATE
son
SINGLE
end
normat
ME
Sweer
one
RATE
GENERATOR
MULTIPLIER
CYCLES/SEC
RMULT
¢
I1@
xt
ee
gio
KIGOO
9
RATE
son
PULSE
AMPLITUDE
an
SYNC
TRIGGER
SOURCE
ra
TRIGGER
TRIGGER
OPERATION
PULSE
AMPLITUDE
OR
SYNC
vunctian
OR
HFS
2.
BEST
PULSE
SENESTIITY
JUST
EFORE
ARROW,
VERNIER
SYNC
FUNCTION
@witct
TH
APRROKOMATELY
FOG
RES
mare,
SYNC
BIOME
sa
KEN,
HP
SYNG
ror
unsE
ro
x
taacyenes.
FUNCTION
GAIN
SwiTcH
pene
Pee
NALS
EXUEEDING
820
VOLTS
Of
pasty
TRIGRENE
EXQEKOING
£2
VOLTS.
XS
OM
KES
POR
SMALL
AMPLITUDE
TemGERS
ue
TO
some,
POWER
oie
on
atti.
till
STEP
nes
Hehe
RET
turn
to
STANDBY
to
exrens
eee
VARIABLE
ed
cLesune
POLARITY
*
DRIVE
INPUTS
REED
SWITCH
FREQUENCY
EXTERNAL.
TRIGGER
128
4
Iv
MAX.
PEAK
SxCEPY
BDV
MAK.
PEAK
YS
KE
TREER
GIR
BEY
MAR
DEO
TORS,
ORF
MAR.
ROLE
2-0
Fig.
2-1.
Type
519
Oscilloscope
front
panel.
Introduction
The
Type
519
Oscilloscope
is
a
high
speed
laboratory
instrument
designed
for
observing,
measuring,
and
photo-
graphically
recording
phenomena
in
the
nanosecond
(milli-
microsecond)
domain.
However,
before
the
instrument
can
be
used
successfully,
it
is
important
for
you
to
have
an
un-
derstanding
of
the
operation
of
each
control.
This
section
of
the
Instruction
Manual
is
intended
to
help
you
acquire
this
understanding.
Much
of
the
familiarity
with
the
controls
will
come
only
with
actual
use
of
the
instrument.
A
brief
description
of
each
of
the
front-panel
controls
follows.
Front-
panel
markings
are
shown
in
Fig.
2-1.
FUNCTION
OF
CONTROLS
CRT
FOCUS
Used
in
conjuction
with
the
ASTIGMATISM
control
to
focus
the
oscilloscope
trace.
INTENSITY
Adjusts
the
brightness
of
the
trace.
ASTIGMATISM
—
Used
in
conjunction
with
the
FOCUS
con-
trol to
obtain
a
round
spot
and
a
sharply
focused
trace.
SCALE
ILLUM.
Adjusts
the
brightness
of
the
graticule
markings.
Graticule
A
knurled
knob
located
below
the
center
Control
of
the
graticule
permits
graticule
to
be
moved
down
out
of
the
viewing
area.
TIME
BASE
NANOSEC/CM
_
Selects
the
desired
time
base.
DELAY
Determines
the
delay
of
the
start
of
the
sweep
with
respect
to
the
trigger
signal
input.
NORMAL-SINGLE
Selects
either
normal
or
single-sweep
SWEEP
operation.
RATE
GENERATOR
CYCLES/SEC
Used
in
conjunction
with
the
MULTIPLIER
control
to
set
the
Rate
Generator
out-
put
frequency.
SECTION
2
OPERATING
INFORMATION
MULTIPLIER
Multiplier
for
the
CYCLES/SEC
control.
Should
be
set
to
OFF
position
when
Rate
Generator
is
not
being
used.
CALIBRATION-STEP
GENERATOR
RANGE
Selects
full-scale
amplitude
of
the
cali-
brated
steps,
a
variable
uncalibrated
step
amplitude,
or
a
standby
condition.
Should
be
set
to
STANDBY
when
Calibration-Step
Generator
is
not
being
used.
VARIABLE
Permits
the
step
waveform
to
be
preset
to
an
arbitrary
desired
amplitude
up
to
about
50
volts
into
a
125-ohm
load.
VOLTS
Sets
the
output
voltage
of
the
calibration-
step
waveform
in
the
10V
and
1
V
posi-
tions
of
the
RANGE
switch.
REED
SWITCH:
DRIVE
Adjusts
the
reed-switch
magnetic
excita-
tion
for
proper
closures
or
permits
single
reed
operation.
FREQUENCY
=
Controls
frequency
of
the
reed-switch
mag-
netic
excitation
to
help
minimize
contact
bounce.
TRIGGER
PULSE
AMPLI-
=
Selects
triggering
signal
amplitude
re-
TUDE
OR
SYNC
*
quired
to
operate
triggering
circuits,
or
ad-
justs
synchronization.
VERNIER
SYNC
Used
in
conjunction
with
PULSE
AMPLI-
TUDE
OR
SYNC
control
to
synchronize
the
sweep.
FUNCTION
*
Permits
choice
of
triggered
or
synchronized
displays.
GAIN
*
Selects
proper
gain
or
attenuation
for
the
triggering
signal.
TRIGGER
Selects
the
triggering
signal
source
and
SOURCE
polarity.
*
Also
see
TRIGGER
OPERATION
section
of
front-panel,
Fig.
2-1.
2-1
Operating
Information—Type
519
POSITIONING
VERTICAL
Adjusts
the
vertical
position
of
the
trace.
AXIS
ROTA-
Aligns
the
trace
parallel
to
the
horizontal
TION
graticule
lines.
HORIZONTAL
—
Adjusts
the
horizontal
position
of
the
trace.
POWER
DIM
ADJ.
Used
to
adjust
the
brightness
of
pilot
light
after
45-second
warm-up
period.
ON
AC
line
switch.
PRELIMINARY
INSTRUCTIONS
Cooling
A
blower
maintains
safe
operating
temperature
in
the
Type
519
Oscilloscope
by
drawing
air
through
a
filter
and
circulating
it
over
the
components.
Therefore,
the
instru-
ment
must
be
placed
so
that
the
air
intake
and
cabinet
ventilating
holes
are
not
blocked.
The
air
filter
must
be
kept
clean
to
permit
adequate
air
flow.
A
thermal
cutout
switch
disconnects
the
dc
power
if
the
instrument
becomes
overheated.
The
pilot
lamp
will
re-
turn
to
full
brightness
in
the
event
that
dc
power
is
lost.
Brown-Yellow-Green
Lo
B
beats
Black-White
117-VOLT
OPERATION
Brown-Yellow-Green
Brown-Yellow-
Brown
Black-White
234-VOLT
OPERATION
If
this
happens,
check
immediately
for
proper
airflow
into
the
instrument. The
blower
continues
to
cool
the
interior
and
reduces
the
time
the
thermal
switch
remains
open.
DC
power
will
be
restored
when
the
temperature
drops
to
a
safe
value.
Power
Requirements
The
regulated
power
supplies
in
the
Type
519
Oscillo-
scope
will
operate
with
line
voltages
from
105
to
125
volts
(117
nominal)
or
from
210
to
250
volts
(234
nominal).
The
line
voltage
for
which
your
instrument
is
wired
at
the
factory
is
indicated
on
a
metal
tag
fastened
to
the
rear
panel
near
the
power
receptacle.
Transformer
connections
may
be
changed
for
either
117-
or
234-volt
operation
by
using
the
information
given
in
Fig.
2-2.
The
power
trans-
former
is
wound
with
two
117-volt
primaries
which
are
connected
in
parallel
for
117-volt
operation
and
in
series
for
234-volt
operation.
Since
the
blower
motor
is
connected
across
only
one
of
the
transformer
primaries,
no
change
in
the
motor
lead
connections
is
required.
When
the
trans-
former
connections
are
changed,
the
voltage
indicated
on
the
metal
tag
should
be
covered
with
another
tag
which
conforms
to
the
new
operating
voltage.
For
maximum
dependability
and
long
life,
the
line
voltage
applied
to
the
Type
519
Oscilloscope
should
be
near
the
voltage
indicated
on
the
metal
tag
located
near
the
power
receptacle
at
the
rear
of
the
instrument.
If
the
line
voltage
exceeds
the
operating
limits,
or
has
a
poor
waveform
(dis-
torted
sine
waves),
unstable
power-supply
operation
may
Fig.
2-2.
Power
transformer
connections
for
operation
of
the
Type
519 Oscilloscope
at
117
or
234
volts.