Adjustment Procedure
2307.2
ODD
0 0 0 0 0 0 0 0 0 0 0
DOD
0 0 0 0 0
DOD DOD
0 0 0 0
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~
~--
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QP
1102
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1
POTENTIOMETER RANGE :
"50
dB"
RECTIFIER RESPONSE :
"Peak"
LOWER
LIM
. FREO.:
"2
Hz"
WRITING SPEED:
"1000
mm/sec"
PAPER SPEED: "1 mm/sec"
INPUT
ATTENUATOR:"OdB"
Paper: OP 1102
WRITING WIDTH:
"100
mm"
Replacement
of
the
slider
10.75
OdB
A detailed drawing of
the
lamellae
of
the
potentiometer and
the
curve above .
As
it can be seen on
the
drawing, one step on
the
curve correspond
to
the
slider are moved from
one
lamellae
to
another.
Connect
2307 as
the
drawing shows above.
Adjust
the
input voltage (at approx. 20 kHz) for a pen deflection
to
just a little higher
than
50
dB
line. Turn
the
generator
to
approx. 20
Hz
and check
that
the
pen deflection
is
under 0
dB
line.
Switch the generator
to
automatic scanning and
start
the
Level
Recorder.
The
pen will ladder
in
steps with 6
dB/oct
. as shown
in
the
drawing above.
Remove
the
Range Potentiometer.
Dismount
the
locking spring by use
of
slim pliers.
Dismount the defective slider and
mount
the
new one.
Then the locking spring
is
put
into position behind
contact
After replacement regrind
the
slinder. This
is
done by placing a piece of
the
finest glass-paper
~
etween
the lamellae and
the
slider and move
the
pen
from side
to
side.
Valid from serial no
371302
2-5
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