-. ..
(2—
- —.
90
-01 -u • 60 U—I
Figure 13
Example: Change
range to: 0-80
feet.
Press: 8 - 0 - LOWER LIMIT
The depth will then be displayed.
F1.,lJ' ...L.
lb——.——— — •'--
IL'—--——
22
90 ——--—. —--.-'—-—.
69—— :
00 0—i 'u—-' -' -2—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 -
The depth will then
(See Figure 15.)
Note that the paper speed
slows automatically at this range
setting.,
UPPER LIMIT
Many
times it is desirable to ex-
JO ' —-——--—' 20—
bO 60—
90 ''' '——— 90--
—20 ——————---—------————- —
20 —
ISO ' 01—' U- —..-—'-.- ISO'
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-15B 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.
20
-—'——-—---———-——-——
20
2——--'-
- Oh — -36
qi
-. 52 -
02
- bil'——'P--I—"'-—'-I.' —-
Figure 16
Example: Set range to 40-60 feet.
Press: 4-0- UPPER LIMIT
The range will then be displayed:
(See Figure 17.)
The Uppef
and Lower Umits
can be used in various combina-
8. Draw the
end of the paper
across the face
of the platen,.
around the friction roller, over

the

take-up core, and tape it
scuarely
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
as?embly 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
insidb 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 moy-
ing smoothly and evenly
across the platen. If the
pa-
per flutters or begins to run
"uphill", repeat step
8.
LOWER LIMIT
be displayed:
8 J 13
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