COMDYNA GP-6 - Page 12

OPERATOR'S
&
MAINTENANCE
MANUAL
page
10.
SYMBOL
COLOBCODE
DESCRIPTION
SJ'
Gray
Alternate
summing
junction
for
amplifiers
1 -
4.
(Conducting
when
a
logic
11
0
11
is
patched
to
the
SW
switch
control
jack.)
1,-¥-
Green
Standard
input
summing
resistor,
normalized
as
a
unity
value
to
sim-
plify
programming.
(Actual
resistance
is
SOK
ohms.)
.1
rY-
Green
Summing
resistor
input
one
tenth
the
standard
value.
(Actual
resis-
tance
is
5K
ohms.)
·U,
B
Green
One
end
of
standard
integrating
capacitor,
normalized
so
that
the
11
1
11
resistor
and
B
capacitor
combine
to
produce
a
one
second
time
con-
stant,
as
referred
to
programming
time
scales.
(Actual
capaci-
tance
is
20
ufd
for
the
slow
and
.05
ufd
for
the
fast
time
scales.
·0,.18
Green
Integrating
capacitor
that
has
a
value
one
tenth
the
standard
B
capac-
itor.
(Actual
capacitance
is
2
ufd
for
the
slow
and
.005
ufd
for
the
fast
time
scales.)
SJ~C
Green
Resistor
network
for
the
SJ'
summing
junction.
Amplifier
becomes
an
0 0
inverter
when
SJ'
is
conducting.
Normally
used
for
integrator
initial
2
conditions.
May
also
be
used
as
the
feedback
and
input
with
the
SJ
summing
netwokr.
(See
Summer
patching.)
i
Yellow
Attenuator:
bottom
end
grounded;
top
end
input
and
wiper
output
brought
out
to
the
panel
--
wiper
indicated
by
the
arrow.
-
.
i
Yellow
Voltage
divider:
top
and
bottom
end
inputs
and
wiper
brought
out
to
the
panel
--
wiper
indicated
by
the
arrow.
:c
Black
System
ground.
11!'
~
Multiplier
network
symbol.
X
Brown
One
of
two
multiplier
inputs.
y
Brown
One
of
two
multiplier
inputs.
'L
Gray
Multiplier
output,
a
current
proportional
to
the
product
of
11
X
11
and
11
Y/
normalized
so
that
when
connected
to
the
summing
junction
of
an
op-
erational
amplifier
with
a
11
1
11
resistor
feedback,
and
with
reference
patched
as
both
inputs,
the
amplifier
output
equals
reference.
SW
White
Electronic
switch
'control.
Logic
O
(ground
or
positive
voltage,)
SJ'
con-
ducts,
SJ
shuts
off.
Logic
1
(-5V
or
less,)
SJ
conducts
and
SJ'
shuts
off.
Hold
logic
(-2V
thru
-3V)
SJ'
shuts
off
and
the
summer
resistor
network
is
disconnected
electronically
from
the
amplifier/capacitor
feedback.
OP
White
Computer's
operate
bus,
integrator
mode
logic
from
the
central
aper-
push
button
control,
patched
to
11
SW'
for
normal
integrator
operation.
COMDYNA,
INC.