SECTION
I
GENERAL
DESCRIPTION
The
Tektronix
Type
511-A Cathode
Ray
Oscillo
scope
is
a
wide
range,
portable
instrument,
making
possible
the
observation
of
a
wide
variety
of electrical
waveshapes.
It
is primarily
intended
for
laboratory
and
shop
use,
in
the
development
and testing
of
all
types
of
electronic
equipment.
The
Type
51
1-AD
Oscilloscope
is identical
to
the Type
511-A
except
that
it
includes
a
factory
installed Type
l-AD-25
Delay
Network,
which
is described
in Section
VII
of
this
manual.
CHARACTERISTICS
Signal
observable
1.
Sine
waves
from
10
cycles
to
10
m
c
.
2.
Pulses
of
.
1
microsecond
to
1
/50
sec.
Sweep
Circuit
Hard
tube
type,
either triggered
or
recurrent as
de
sired.
Sweep
Speeds
Continuously variable
from .01
sec.
per
cm
to
.1
micro
second
per
cm.
Trigger
Requirements
.5
to
50
V
(Peak)
sine
wave
or
pulse
of
either
polarity.
Pulse as
short
as
.05
microsecond
will
trigger
satis
factorily.
A
key
connected
between
TRIGGER
INPUT
and
GND.
is
suitable
for
triggering single
sweeps.
Sweep
Lag
CRT
is
unblanked
and
sweep
is
operating
linearly
in
less
than
.1
microsecond
after
receipt
of
an
infinitely
sharp trigger pulse.
Sweep
Magnification
Any desired
20%
of
the
sweep can
be
spread
over
the
entire
trace except for sweep speeds
faster
than
.5
microsecond
per
cm.
External
Sweep
Input
DC
coupled
via
1
00
K potentiometer
and
sweep
am
plifier.
Maximum
deflection sensitivity 1.5 V
per cm
DC
or
peak
to
peak
AC.
Band width,
DC
to
800
kc (3
db
down
at
800
kc).
Vertical
Deflection Circuit
Switch
permits
signal
input
connector
on panel to be
connected
to
deflection
plates
directly,
via
capacitor
(RC=.l
sec),
via 1
amplifier
stage,
or via 2 amplifier
stages.
Input
Attenuator
Frequency
compensated
RC
type
with
attenuation
ratios
of 2,
4,
and
8.
Vertical
Deflection
Sensitivity
Without
amplifier
27
V
per cm maximum,
200
V
per
cm
minimum,
DC
or
peak
to
peak
AC.
1
Stage, 2.7 V
per cm
maximum,
40 V
per
cm
mini
mum.
2
Stages,
.27
V
per
cm
maximum,
4
V
per cm
mini
mum.
(Sensitivity
is
reduced
by
a
factor
of 10
when
probe
is
used.)
In no
case
should the
combined AC
and
DC
input
voltages
exceed 600 V
peak.
Input
Impedance
1
meg
shunted
by 40
mmfd
(±5%)
for
any
setting
of
the
input
selector
and
input
attenuator.
With probe,
10
megohms shunted
by
14
mmfd.
Vertical
Amplifier
Bandwidth
1
stage, down
3
db
(Max) (from
1
mc
response) at
5
cps
and
10
m
c.
2
stages,
down
3 db
(Max) (from
1
mc
response)
at
5
cps
and 8
m
c.
Vertical
Amplifier Transient Response
Rise
time,
1
stage
.04
miarosecond (10%
to
90%)
2
stages
.05
microsecond
(10%
to
90%)
Calibrating
Voltage
Sine
wave
of power line
frequency.
Three
ranges
0-1,
0-10,
0-100
v.
peak
to
peak.
Accuracy
for
line
voltage
of 117
v.
is
±5%
of full
scale.
May
be
meas
ured
with
external
meter
when
greater
accuracy
is
required.
A
position
on
the
SIGNAL
CALIBRATE
switch
allows
the
use
of
an external
calibrating
source
when
desired.
Waveforms
available
externally.
Sweep
sawtooth,
20
volts
peak.
Positive
and
negative
gate,
40
V.
peak,
same
dura
tion
as
sweep.
Connection
to
CRT Cathode
via
.1
mfd
capacitor.
RC=.
0
12
sec.
Accelerating
voltage
on
cathode
ray
tube,
3
KV.
Power
Requirements.
105-125
volts,
or 210-250
volts,
50-60
cycles,
230
watts.
(See Section
IV.)
Weight.
50
pounds.
Dimensions.
15½" high,
12½"
wide,
21
½"
deep.
Finish.
Panel,
photo
etched
aluminum
with
black
letters.
Cabinet,
gray
wrinkle.
FUNCTIONS
OF
CONTROLS AND
BINDING POSTS
A
brief
explanation
of
the
function
of
each
control
and
binding
post
is
given below.
For
a
more
detailed
expla
nation
consult
Section
III, Circuit
Description.
SECTION
1, PAGE 1
TYPE
511-A, 511-AD
Summary of Contents for 511A
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Page 40: ...Fig 42 Interior view right front side SECTION 4 PAGE 22 TYPE 511 A 511 AD ...
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Page 42: ...E CI5E Fig 44 Sweep chassis bottom view R63 C2I TYPE 511 A 511 AD SECTION 4 PAGE 24 ...
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