COMDYNA GP-6 - Page 6

OPERATOR'S
&
MAINTENANCE
MANUAL
page
4.
Evaluation
of
Time
Response
Curves
Based
on
Physical
Units
Y
Axis
...
Where
zero
is
the
center
co-ordinate,
the
full
scale
co-
ordinates
are
equated
to physical
units
by
setting
them
equal
to
the
amplifier output's amplitude
scale
factor:
the
maximum
estimated
amplitude
assigned
to
derive
a program's
scaled
equations
so
that
an
output
in
physical
units
equals
the
voltage output
times
the
scale
factor.
X
Axis
...
The
full
scale
X
axis
co-ordinate
is
the
compute time
period
in
computer
time units divided
by
the
program's
time
scale
factor.
Changing
the
Compute
Time
Period
If
it
is
determined that
the
compute
time
period
is
either
too
long
or short for
convenient display
or
recording,
the
COMPUTE
TIME
control
may
be
adjusted
and
a
new
compute
time
period
established.
A
new
compute
time
period
does
not
affect
the
response.
only
the
time
period
of
the
response.
If
a
convenient
readout
is
not
obtainable with
the
range
of
compute
time
period
selections,
a
new
program time
scale
factor
must
be
selected.
To
produce
dependent
variables
vs.
dependent
variable
curves:
Producing
curves
where
an
amplifier output
replaces
time
as
the
abcissa
requires
only that the X
ADDRESS
switch
be
positioned
to
the
desired
amplifier
number.
In
such
cases,
zero
shall
be
the
center
co-ordinate;
the
oscilloscope
or
plotter
plus
and
minus
full
scale
co-ordinates,
like
the
Y
axis
scaling,
shall
be
set
equal
to
the
amplifier
output's amplitude
scale
factor.
1.6 SLAVING TWO
OR
UNITS
TOGETHER
When
problem requirements
exceed
the
capacity
of
one
GP-6,
two or
more
units
may
be
slaved
into a single operating
system.
1 . Designate a unit to be the master; others shall then be slaves
to
the master.
2. Connect a common
ground
between units: rear terminals
GND
suggested.
3.
On
all slave units remove the shorting wire between
rear
terminals
OP
OUTPUT
and
OP
INPUT.
4.
Connect
the
rear
terminal
OP
OUTPUT
of
the master to the
OP
INPUT
terminals
of
all slave units.
5.
Patch each
unit
and the interconnections
between units.
6.
Run
the program from the master.
Note:
.After
the slaved operation
has
been
completed,
in
con-sideration
of
the next
user,
replace the
OP
OUTPUT
to
OP
INPUT
shorting wire.
1.7
OVERRANGE
When
any
of
the
eight operational amplifiers
exceed
either
plus
or
minus
reference,
the
OVLD
light
will
turn
on.
(The
actual
overrange threshold
is
normally
set
to about
1.05.
See
the
970
Overload
lndiator circuit description for adjustment
procedures.)
1.8
POWER
The
AC
power switch
is
a
part
of
the
COMPUTE
TIME
control.
To
turn
power
on,
rotate
the
COMPUTE
TIME
control clockwise
from
the
OFF
position.
The
above
located pilot light
indicates a power
on
condition .
.__-------------------------------------COM
DYNA,
INC.