5. USE WITH PRECISION SOUND
LEVEL
METER TYPE 2203
AND
IMPULSE PRECISION SOUND
LEVEL
METER TYPE 2204
Using these two portable meters, sound and vibration analysis
can
be
done
in the
field with the 1614,provided a 12 V
DC
battery
to
power the latter
is
available. The 2203's frequency
range
is
( 10
Hz-
25 kHz) suitable
for
audio
frequency
analysis
with
the 1614/15,
or
vibration analysis in
that
range.
The
2204
adds
to
the versatility
of
the 2203
by
providing in a model
of
the
same
external dimensions
as
the 2203 the
ability
to
measure impulsive noise
accurately. The frequency
range
for
normal sound and vibration measure-
ments
is
(2
Hz
- 70 kHz).
For calibration
and
operation
of
the 1614/15 and 2203/04 refer
to
the
Instruction manuals on the 8 & K measuring transducer employed. A
typical measuring
set
up employing the 1614/15, 2203/04
is
shown in Fig.
4.4
..
..
1614 or
1615
Filter
Set
2204
Impulse Precision
Sound
Level
Meter
1'7oo
7'1
Fig.4.4 Filter
Set
Type 1614/15 combined
with
Precision Sound Level
Meters 2203/04
OPERATION
1.
Connect
Set
up
as
in Fig.4.4
2.
To
operate 2203. Pull Function
knob
out
and
turn
to
Ext. Filter.
To
operate 2204. Turn meter switch (outer knob)
to
Fast
or
Slow,
then
turn
weighting
network
(inner knob)
to
Ext. Filter.
27