BRUEL & KJAER 2672, Руководство пользователя

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Chapter 2 — Controls and Connectors
Front Panel
Sound Quality Conditioning Amplifier Type 2672
User Manual
Brüel & Kjær
2
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2
2.1 Front Panel
2.1.1 Filters
2.1.2 Gain
Fig.2.1 Front panel of Type 2672
Power On: LED lights when the amplifier is switched on.
Batt. Low: LED lights when the battery power is low.
HP: Two 3-position sliding switches for selection of 0.3, 10 or 20 Hz
2nd order high-pass filter for left- and right-hand channels.
DFCF: Two 2-position switches for turning the left- and right-hand Dif-
fuse Field Correction Filters On or Off.
On: The filters compensate for the diffuse-field characteristics of
Head and Torso Simulator Type 4100 (D), and give a flat
frequency response.
Off: No compensation is made.
Low/High: Two 2-position switches that you use in conjunction with the
switches to their right for selecting low or high gain adjustment of
the input signals. Settings are:
Low: – 20, – 10, 0, 10 dB
High: 20, 30, 40, 50 dB
Ovld.: Two overload indicators. An LED is lit when there is an overload
in the corresponding channel.
±
3 dB: Two potentiometers for sensitivity adjustment with a range of
±
3 dB relative to the Low/High settings.