BRUEL & KJAER 2203 - Third Octave Filter Set 1616; Microphones

6.2.1. Octave Filter Set 1613
This filter set (Fig.6.8) is designed for octave analysis of noise and vi-
bration . It fits onto the 2203 with four screws thus making one com-
pact, portable unit.
The 1 61 3 has 11 octave filters with center frequencies from 31,5 Hz
to 31,5 kHz according to IEC standards.
Full details on the 1 61 3 and its use with the 2203 are given in the
1 61 3 Instruction Manual.
(\. ___ ··-·····
f) out
On Off
-
Weighting Switch
1000 2000
500 • • 4000
250 • • 8000
• •
125 . 16000
63 .
Frequency Hz
Octave Fllto• Set
Fig.6.8. 1613
6.2.2. Third Octave Filter Set 1616
This filter set (Fig.6.9) contains 34 active filters with third octave cen-
ter frequencies from 20Hz to 40kHz. If fulfills the requirements of IEC
R 225, DIN 45 652 , and ANSI S 1.11 Class Ill. For a 2203 with serial
No. 424272 or less, a new bottom plate, DD 0135 must be used to
permit mounting of the 1 61 6.
See the Instruction Manual of the 1 61 6 for full details.
6.2.3. Microphones
The B & K Condenser Microphones suitable for use with the 2203 are
shown in Fig.6.1 0. The microphones are designed for linear frequency
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