PAD — 234
Analog/Digital
Trainer
Operator’'s Manual
GENERAL
This
manual
OPERATING
should
be
experimentation.
read
- As a general rule, NEVER
wiring with the PAD unit
Construct
power
to
the
the
circuit.
the
event
DO
NOT
thoroughly
construct
ON.
Double
a
check
before
circuit
your
circuit.
Should a problem occur.
the PAD and notify your
In
PROCEDURES
this
unit
ATTEMPT
TO
Turn the unit
instructor.
needs
REPAIR
repairs,
THIS
off
1)
or
wiring.
in
any
insert
any
Then
apply
immediately.
notify
UNIT
engaging
your
YOURSELF!!!
Unplug
instructor.
MAINTENANCE
OF
THE
PAD
234
ANALOG
DIGITAL
TRAINER
* % * CAUTION
* * *
FUSE
REPLACEMENT
1.
Before
replacing
the off position
the
and
fuse be sure that
UNPLUG THE PAD
!!
2.
Use
amp
fuses.
3.
Unscrew
the black cap on the
and remove bad fuse.
Replace
same
only
MDL
0.5
the
power
right side panel
with the correct
switch
DO
NOT
KEEP
DO
NOT
USE
ALL
LIQUIDS
USE
WARNING
SOURCES
AWAY
NEAR
FROM
****kk*
SIMULTANEOUSLY
THE
FLAMMABLE
PAD
UNIT
MATERIALS
in
of the PAD unit
fuse
in the
manner.
*kkkkk*
is
!!
!!
!!!
PAD
POWER
234
SUPPLY
ANALOG
(+)
DIGITAL
and(-)
supply,
12
with
TRAINER
volt
500
regulated
ma
short
power
circuit
protection.
(+) 5 volt
with 1 amp
regulated power supply,
short circuit protection.
(+) and (-) 15 volt variable
(from 1.5 V to 15V) with 1.5
short circuit protection.
(+)12.6
supply.
FUNCTION
CLOCK
GENERATOR
OUTPUT
Volt
AC
center
tap
power
Sine,
square,
and triangle output wave
shape.
1 Hz to 100 Khz in 5 ranges,
uncalibrated,
buffered,
adjustable
output O to 15 volts peak to peak.
(TTL)
Frequency determined by COARSE FREQUENCY
FINE FREQUENCY adjustment knob. Rise and
fall
time
is
400
ns.
INDICATORS
8
SWITCHES
8 binary toggle switches
(0
2 momentary pulse switches,
with complimentary outputs.
BREADBOARDS
2 breadboards
each.
POWER
CONSUMPTION
ADDITIONAL
FEATURES
supply
amp
BUFFERED
117
Volts
TTL
at
compatible
with
.5
or 5 Volts)
debounced
plug-in
tie
points
Amps
High impact plastic
grounded line cord.
line.
(3)
840
LED'S.
case
Fuse
with a 3-wire
protected AC
OPERATION
DC
POWER
SUPPLY
+5,
row
+12, -12,
located in the vertical
of binding posts,
positioned along
the
left
side
of
the
Connect the load
post and the GND
between the
(ground) .
binding
Use
of
5V
Use
of
+
12V
Use
of
-
12V
Connect the load between the Binding
Post marked - 12V and the Binding Post
marked GND (ground) .
DC
Located
VARIABLE
SUPPLY
Supply
breadboards.
Connector
Connect
Using the - 15V
Connect
AC
SUPPLY
Located
Connect
the
POWER
+
Using
the
6.3
Using
the
12.6
FUNCTION
load
between
above
left
the
the
to
Binding
Binding
the
main
Post
breadboards
and identified as + 15V,
controlled
appropriate knobs.
(Lower left hand
the top plate.)
15V
Using
the
Post marked + 12V and
marked GND (ground) .
the
load
between
the
tie
by the
corner
blocks
identified as + 15 V and OV (ground).
Use
knob marked + 15V to control the output
voltage of this tie block.
the
load
between
identified as the knob marked
voltage of this
and
VAC
VAC
GENERATOR
above
the
identified
as
load
as
tie
to
AC
the
Use
output
breadboards
Volts.
between
6.3
main
the
block
15V and OV (ground).
- 15V to control the
tie block.
right
identified
the
of
and
0
Connect the load between
marked 6.3 and 6.3.
the
tie
block
(ground).
the
tie
blocks
The output for the GENERATOR and CLOCK are
located in the top two Binding posts in the
vertical row, on the left hand side of the
breadboards
marked
GEN
and
CLOCK.
The generator and clock outputs are controlled
by the five knobs located on the far left hand
side of the PAD unit and marked accordingly.
(4)
GENERATOR
Before
(CONTINUED)
using
familiarize
and
the
the
Geneérator
yourself
effects
they
or
with
the
have
on
Connect an oscilloscope to
as described above. Adjust
visible
Clock
output
functions
the
the
the
of
output
in
an
the
actual
five
circuit
control
GEN Binding post and
O-scope as necessary
GND Binding post
to observe a clearly
waveform.
By using the five control knobs observe how you are able
output waveforms,
by using these controls.
(see the section below labeled "Using the Generator".
Using the CLOCK
Connect the load
marked CLOCK and
-
the
to
Adjust
to
marked
Connect
GENERATOR
the
FINE
marked
exact
frequency
the
load
between
(Function
the
and
the
the
Binding
Generator)
the
posts
using
using
FREQUENCY.
GEN
adjust
between the Binding
GND
(ground) .
Select the appropriate frequency
knob marked COARSE FREQUENCY.
=
Using
knobs
waveforms.
knob
Posts
GND
(ground) .
1.
Select
2.
Set
3.
(using the
Fine tune the frequency
to the exact frequency required.
4.
Adjust
output
5.
Adjust the
OFFSET.
the
the
type
COARSE
of
waveform
FREQUENCY
required
knob
to
by
the
using
the
correct
knob
as
needed
with
the
marked
bottom
left
knob.
range.
FINE
knob
(using the AMPLITUDES)
the amplitude
voltage maintaining a clear waveform.
offset
top
to
control
FREQUENCY)
adjust
knob
the
marked
DIGITAL
Using
SECTION
the
Toggles
=
Located
=
This section includes eight manual
toggle switches,
eight LED tie blocks
two pulse switches.
&
Connect
to
be
across
the
the
top
device
used
of
the
between
(numbered
0 to
7)
PAD
the
tie
and
block
and
GND
the
up
(ground) .
-
When
the
toggle
position,
device.
+5
When
position
Using
Using
the
the
LED
Tie
Momentary
=
-
0
switch
volts
the
is
switch
volts
is
Connect the device
directly under the
+
SV
is
0
is
applied
For
tie
+
applied
5V
block
it
pulse
is
in
supplied
is
in
the
to the
LED to
tie block
be used. When
the
LED
will
be
off.
connect
When
the
the
light,
device
switch
pulsed the output at the tie block
be +5V. For O V pulse,
connect the
to
the
tie
applied to
is pulsed,
block
the
down
applied.
will
markedO.
to
market
1.
the point block
then the output
+5
when
to
is
will
device
V will
till
will
the
be
the switch
be O V.
To become more familiar with the toggle switches and LED tie points
take a piece of wire and connect between one of the Toggle tie point
blocks and one of the LED tie point blocks.
Flip the switch and observe
that voltage is being applied,
lighting the LED.
Repeat
this
procedure
using
the
momentary
(6)
pulse
switches.
PAD
234
EXTENDER
DESCRIPTION
15
—
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&
*
*
*
*
*
*
A
B
c
D
E
F
G
H
X
Y
1
—_—
16
FM
EXTENDER
PIN
1
2
3
4
5
6
7
8
g
10
it
12
13
14
15
16
TIE
BLOCK
3
=
=
e
K=
T
A
B
(¢]
D
E
B
G
H
X
Y
A 16-pin Insulation Displacement
EXTENDER on the top plate of the
connection to personal computers
2
EXTENDER
l—AM
FUNCTION
GROUND
-12v
*
5V
+ 12 v
CLOCK
GEN
=
¥
=
=
=
e
=
EM INPUT
AM INPUT
labeled
(IDC),
Connector
ribbon-cable
PAD 234, allows
and other electronic equipment.
and digital signals to add-on
analog,
The user can supply power,
The EXTENDER has eight uncommitted
boards via a ribbon cable.
lines which can be easily connected via tie-blocks
bidirectional
add-ons or
Also,
to the LEDs and switches of the PAD 234.
can be interfaced to circuits already breadexternal equipment
boarded
on
the
trainer.
the function generator built into the PAD 234 can be
In addition,
either AM or FM modulated by applying signals to either pins 15
is
(FM)
Since pin 15
and 16 of the IDC or tie-blocks X and Y.
it may be used as
capacitively coupled to the function generator,
DC-level signal in certain applications.
an additional
et
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