SECTION
2
OPERATING
INSTRUCTIONS
Front-Panel
Controls,
Indicators, and Connectors
(See
Fig. 2-1.)
The
function
of
each
item
on
the
Type 114
front
panel
is
given
in
the
following
tabulation.
POWER
Switch
This
toggle switch
completes
the
circuit
to
the
primary
of
the
power
transformer.
Indicator
The
white
lamp
to
the
right
of
the
POWER
switch
lights
when
the
Type
114
is
en
ergized.
PERIOD
Switch
This
switch selects
the
basic
range
of
pulse period.
When
the
switch
is
set
to
EXTERNAL
TRIGGER
—
INPUT,
the
Type
114
provides
width
and
amplitude
control
for
externally
generated
pulses
applied
to
the
INPUT
connector.
Note
that
“
100
mS"
does
not
indicate
a
switch
position, but
is
instead
an
index
for
the
VARIABLE
control.
VARIABLE
This
control
has
a range
of
10:1
or
more,
Control
and
provides
continuous
coverage
between
the
steps
of
the
PERIOD
switch.
EXTERNAL
BNC
connector to
which
the external
trig-
TRIGGER-
ger
is
applied
when
externally
triggering.
INPUT
Con
nector
WIDTH
Switch
This
switch
selects
the
basic
ranges
of
pulse
width. Note
that
the
word
“
10
mS
”
does
not
indicate
a
switch
position,
but
is
instead
an
index
for
the
associated
VARI
ABLE
control.
When
the
WIDTH
switch
is
set
to
SQUARE
WAVE,
the
output
of
the
Type
114
is
a
square
wave
whose
period
is
selected
by
the
PERIOD
controls.
VARIABLE
This
control
provides
continuous
cover-
Control
age
between
the
steps
of
the
WIDTH
switch
and
has
a range
of
10:1
or
greater.
WIDTH
>
With
the
flexibility
provided,
it
is
possible
PERIOD
In-
to
set
the
controls
so that
the
width
of
the
dicator
light
pulse
selected
exceeds
the
period
selected.
When
this
occurs, the
Type
114
counts
down
the repetition
rate
and
lights
the
WIDTH
>
PERIOD
light.
The
pulse
width
remains
as
selected,
but
the pulse
period
is
no
longer
that
selected
by
the
PERIOD
controls.
AMPLITUDE
Switch
Selects
the
two
basic voltage
ranges
and
the
polarity
of
the
output
signal.
VARIABLE
Provides for
varying
the output
amplitude
Control
within
the
range
selected by
the AMPLI
TUDE
switch.
OUTPUT
Connector
BNC
connector
from
which
the
output
is
taken.
TRIGGER
Switch
This
switch permits
the
operator
to select
the
edge
of
the output
pulse
at
which
the
trigger
pulse
occurs.
Connector
BNC
connector from
which
the
trigger
pulse
output
is
taken.
First Time
Operation
The
following
procedures
are
designed
to
acquaint
the
operator with
the
operation
of
the
Type
114.
1.
Set
the
three
VARIABLE
controls
extreme
counterclock
wise.
Set
the PERIOD
switch
to
100 µS,
the
WIDTH
switch to
SQUARE
WAVE,
and
the
AMPLITUDE switch
to
the
"
+1
TO
+3
V"
position.
2.
Connect
the
OUTPUT
connector
of
the
Type
114
to
the
vertical
input
of
an
oscilloscope
(Tektronix
Type
547/1
Al
or
equivalent)
by means
of
a
50
ft
coaxial
cable.
Terminate
the
coaxial
cable
at
the
oscilloscope
end
with
a
50
ft
ter
mination
(Tektronix
Part
No.
011-049
or
equivalent). Make
sure
the
input
voltage
switch
is
set
to
match
the
voltage
of
the
power
source
in
use
(115
or
230
V
ac). See
Fig.
2-2.
At
tach
the
power
cord.
3. Apply
power
to
the
Type 114
and
the
oscilloscope.
Set
the
oscilloscope
TIME/DIV
or
TIME/CM
switch
to
.1
mSEC
and
obtain
a stable
display.
4.
Set
the
WIDTH
switch
to
10
µ
S.
Turn
the
associated
VARIABLE control
clockwise
and
note
the
increase
in
pulse
width.
When
the
control
is
turned
so
that
the pulse width
exceeds
100
/
j
.S,
the
WIDTH
>
PERIOD
lamp
lights.
5. Operate
the
PERIOD,
WIDTH,
and
AMPLITUDE
switches
and
controls
throughout
their
ranges
and
check
the results
with
the
oscilloscope.
Using the Type
114 as a Source of Delayed
Trigger
The
use
of
the
Type
114 as
a
source
of
delayed
trigger
may
be
demonstrated as
follows:
1.
Apply
a
1
Kpps
signal
(such
as
the
output
of
the
oscillo
scope
calibrator)
through
a
BNC
T
connector
and
appro
priate
coax
cables
to
the
external
trigger
input
connectors
of
2-1
Summary of Contents for 114
Page 3: ...Type 114 Type 114 Pulse Generotor ...
Page 8: ...Operating Instructions Type 114 Fig 2 1 Front panel control Fig 2 2 Type 114 rear ponel 2 2 ...
Page 10: ...NOTES ...
Page 14: ...NOTES ...
Page 28: ...Maintenance and Calibration Type 114 Fig 4 20 Locations of electrical components 4 14 ...
Page 30: ...Parts List Type 114 EXPLODED VIEW 5 2 ...
Page 45: ...TYPE 114 PULSE GENERATOR ...
Page 46: ...PULSE GENERATOR ...
Page 47: ...TYPE IM PULSE GENERATOR c ...
Page 48: ...SW282 POWER SUPPLY CMD OUTPUT AMPLIFIER 4 POWER SUPPLY ...
