B&K 2250 Light Instrukcja Użytkownika Pobierz pdf (Strona 119)

Hand-held Analyzer Type 2250 –

Instruction Manual

114

Influence from the Operating Environment....................47

Input Socket............................................................16, 49

Instantaneous Broadband Measurements.......................8

Instantaneous Time-weighted Sound Level...................10

International Standard for Sound Level Meters ...............1

Introduction......................................................................1

Latched Overload ..........................................................11

Linear Averaging............................................................44

Linear averaging times ..................................................44

Linear Operating Range ....................................7, 42, 46

Linearity Range..............................................................42

Low Static Pressure.........................................................8

Lower Limit ....................................................................41

Low-level Sounds ............................................................7

Magnetic Fields..............................................................48

Maximum Broadband Self-generated Noise..................39

Maximum Sound Level ..................................................41

Maximum Time-weighted Sound Level..........................11

Measured Quantities.................................................8, 13

Measurement Range .....................................................47

Measuring Range ..........................................................41

Microphone....................................................................20

Microphone Handbook BA 5105......................................8

Microphone reference point...........................................20

Minimum hold time according to IEC 60804..................44

Minimum Time-weighted Sound Level...........................11

Mounting for Acoustical Tests........................................15

Mounting for Mechanical Vibrations Tests.....................15

Noise Explorer, Type 7815 ..............................................2

Nominal delay time ........................................................44

Nominal Open Circuit Sensitivity ...................................20

Nominal preamplifier attenuation...................................20

Normal Mode of Operation during EMC Test ................17

Octave-band Filter Sets.................................................16

Octave-band Time Constants........................................47

Open Circuit Sensitivity..................................................41

Operating humidity range ..............................................48

Operating temperature range ........................................48

Optional Software Modules..............................................2

Outdoor Microphone Kit UA 1404....................................1

Output Socket................................................................49

Overload ............................................................8, 11, 13

Latched......................................................................11

Overload Limit................................................................41

Overload Percentage.....................................................11

Pause Measurement......................................................11

PC Software for Hand-held Analyzers, BZ 5503 .............2

Peak ..............................................................................44

Peak C Range ...............................................................43

Peak Sound Level .........................................................13

Preset Time ...................................................................11

Primary Indicator Range................................................41

Protector, Type 7825.......................................................2

Pulse Range..................................................................42

radio frequency emission ..............................................17

random-incidence frequency responses .......................24

Real-time frequency range ............................................45

Rear Input Socket..........................................................16

Reference attenuation ...................................................45

Reference Conditions for Acoustic Calibration..............20

Reference direction of sound incidence ........................20

Reference Environmental Conditions............................19

Reference frequency .....................................................20

Reference range............................................................20

Reference sound pressure level....................................20

Relative Attenuation ......................................................16

Relative humidity ...........................................................19

Reset .............................................................................11

RF-emitter/receiver........................................................16

Running Spectrum Measurements................................13

Sampling rate ................................................................45

Securing of Microphone Cables during EMC Test ........17

Self-generated Noise.....................................................39

Setting Up Signal Source for Immunity Test .................16

Settling time according to IEC 60804 ............................44

Signal Source for Immunity Test ...................................16

Slow Time Constant ......................................................47

Socket

Input ..........................................................................16

Software Modules

Optional.......................................................................2

Sound Level Calibrator Type 4231..................................8

Sound Level Meter Software for Type 2250, BZ 7222 ....2

Sound Level Meter Standard...........................................1

Sound Pressure Level ...................................................10

Spectrum Analysis.........................................................45

Spectrum Measurements ..............................................13

SPL................................................................................10

Standards ......................................................................19

Start Measurement........................................................11

Start Time......................................................................11

Static pressure ..............................................................19

Storage temperature range ...........................................48

Susceptibility .................................................................18

System Overview ............................................................2

Temperature..................................................................48

Test Rig .........................................................................15

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