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12
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-36---
MB
—U—I --L'--
—----611--U—l
-
Figure
13
Example: Change range
to 0-80
feet.
Press: 8- 0
-
LOWER LIMIT
The
depth
will then be
displayed.
16-—
--——-——
6--—----
LI0_
-_________
6M
U11-----D-I-—
— -
Figure
14
Any depth
in a
multiple
of ten
(10,
20, 30, 500,
etc.) may
be
used as a lower limit
displayed
at
the bottom of the chart
paper.
Example: Change range
to 0-150
feet.
Press: 1
-
5
-
0
-
LOWER LIMIT
The
depth
will then be
displayed:
(See Figure
15.)
Note that the
paper speed
slows
automatically
at this
range
setting.
UPPER LIMIT
Many
times it is desirable to ex-
--
30
-—-----—————- —-———
an
—
--
60
——-—-—---—---——-—---
60
--
90—-
—-—-—------———
90—
—12n —120—
Figure
15
pand
a section of the area that is
displayed
on the
graph
recorder to
show more detail. This is made
possible by
the X-15A to show
segments
of the underwater world
by using
the UPPER LIMIT func-
tion.
Using
the UPPER
LIMIT
key
allows
you
to
display
any depth
range
in
multiples
of 10 at the
top
of the
chart
paper.
Example:
Turn on unit and set
range
to 20-60 feet.
Press: 2
-
0
-
UPPER LIMIT
The
depth
will then be
displayed.
-
-
—26
--
- ——-—
—-- -
—92
-
-52
-
62-—fl-
L-hB B- I-
Figure
16
Example:
Set
range
to 40-60 feet.
Press: 4— 0
-
UPPER LIMIT
The
range
will then be
displayed:
(See
Figure17.)
The
Upper
and.
Lower
Limits
can be used
in various combina-
squarely
to the
take-up
core.
(See Figure 30.)
Small
pieces
of
tape
may
be stored inside
the
housing
for this
purpose.
Close the
top
of the
platen
assembly by pressing
the two
tabs
together
on the
paper
retainer and
returning
the re-
tainer back to the
operating
position.
(See Figure 31.)
9. Turn the small knob at the
upper
left hand side of the
platen assembly
to
put
a
small
amount of tension on
the
paper.
It should be
snug
against
the
platen. (Figure 32.)
10.
Push the
platen assembly
back to its
operating position.
Be sure it
engages
the catch
inside the
top
of the case.
11. Close the front of the case.
Latch both catches on
the
top
of the case.
12. Turn the unit on. Move the
Chart
Speed
knob
fully
clock-
wise. Watch the
paper long
enough
to be sure
it is mov-
ing smoothly
and
evenly
across the
platen.
If the
pa-
per
flutters or
begins
to run
'uphill", repeat step
8.
8
13
Figure
29
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