COMDYNA GP-6 - Page 3

OPERATOR'S
&
MAINTENANCE
MANUAL
GP-6
OPERATING
PROCEDURES
1.0
CONNECTION
OF
EXTERNAL
READOUT
INSTRUMENTS
The
GP-6
offers
a
choice
of
slow
and
fast
time
scales.
Slow
time
outputs
are
normally
recorded
with
an
XY
plotter
or
strip
chart
recorder;
fast
time
outputs
are
normally
displayed
by
an
oscilloscope.
A
time
base
is
provided
and
should
be
used
wherever
possible
as
the
X
input
to
an
XY
plotter
or
XY
oscilloscope.
Use
of
the
interal
time
base
offers
two
advantages.
1.
The
time
base
is
calibrated
to
match
the
integrator
time
scales.
2.
It
sweeps
across
a
fixed
range
of
co-
ordinates
regardless
of
the
time
period
being
plotter
or
displayed.
~
~
y:('"'t-
___
....,.
C[]
GP-6
X
OUTPUT
..-----Y
OUTPUT
Time
Base
---+---
Amplifier
Outputs
Y/POT
ADDRESS
Figure
1-1
XADDRESS
*Note:
Rear
terminals
OP
INPUT
and
OP
OUTPUT
must
be
connected
for
normal
operation.
(See
para
1.6)
Rear
binding
post
terminals
offer
convenient
connections
to
the
X
and
Y
inputs
of
the
plotter and/or
oscilloscope.
The
three
connections
are
shown
in
Figure
1-1
and
listed
below.
1.
GND
...
signal
ground.
2.
Y
OUTPUT
...
selection
of
the
Y
ADDRESS
switch,
to
be connected
as
the plotter and/or
oscilloscope vertical input.
3.
X
OUTPUT
...
selection of the X ADDRESS
switch,
to
be
connected
as
the horizontal
input.
Note:
If
the
oscilloscope's
internal
time
base
and
external
trigger
is
to
be
used
for
display
of
high
speed
repetitive
outputs,
it
will
be
convenient
to
connect
its
external
trigger input
to
the
OP
OUTPUT
rear
terminal.
1.1
CALIBRATION
OF
READOUT
INSTRUMENTS
The
range
and
zero
position
of
a
plotter
or
oscilloscope
should
be
selected
and
positiooned
so
that
their
full
scale
horizontal
and
vertical
axes
span
the
GP-6
minus
and
plus
ten
volts
reference.
(Fig.
1-2.)
+RE
t-
Y
AXIS
0
-RE
F
..
-
-REF
_ __.v
0
X
AXIS
~
--
+REF
Positive
Full
Scale
Co-ordinate
Center
Position
Negative
Full
Scale
Co-ordinate
Figure
1-2
page
1.
--------------------------------------CO
MOYNA,
INC.