Bruel & Kjaer 1621 Tuneable Band Pass Filter

Bruel & Kjaer 1621 Tuneable Band Pass Filter 0.2 Hz - 20 kHz
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Bruel & Kjaer 1621
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The Tuneable Band Pass Filter Type 1621 is a variable filter intended for use with the general purpose B&K 2511 Vibration Meter for narrow band frequency analysis of vibration levels.

 

Specifications:

 
Frequency Range 0.2 Hz to 20 kHz in 5 ranges
Pass Bandwidths Switchable: 3% or 23% (1/3 octave)
Attenuation at 1/2 and 2 x selected frequency: Switchable 34 dB or 16 dB
Dynamic Range >40 dB RMS with 3 % bandwidth between 0.2 Hz and 6 kHz
>35 dB RMS with 3 % bandwidth between 6 kHz and 20 kHz
>40 dB RMS with 2 % bandwidth between 0.2 Hz and 20 kHz
Accuracy of Indicated Frequency ±1.5% at 25°C with additional ±0.04% per °C
BNC Input 1 VRMS or 0.2 VRMS switchable with crest factor of 5
Impedance 1 V input: 1 kohm in series with 10 µF
Impedance 0.2 V input: 200 kohm in series with 10 µF
BNC Output Impedance: 0.5 kohm in series with 100 µF
Load Impedance: >25 kohm
Gain 0 dB ± 1 dB
Hum and Noise: 3 % Bandwidth Frequency: 0.2 Hz - 6 kHz / 6 kHz - 20 kHz
1 V input: 10 mV / 18 mV
0.2 V input: 2 mV / 3.6 mV
Hum and Noise: 23 % Bandwidth Frequency: 0.2 Hz - 20 kHz
1 V input: 10 mV
0.2 V input: 2 mV