Download Bellsouth 2250 Bk Manual
Calibration:Semi-automatic using and external Sound Level CalibratorThe initial factory calibration, sensitivity and microphone serial number is stored for comparison with later calibrations. When using the supplied microphone the maximum allowed deviation from the initial sensitivity is ± 1.5 dB. An unspecified microphone can be chosen during calibration, in which case calibration can be made with practically any sensitivity.Stored Calibration History: 20 latest calibrations plus initial calibration. Aux 2 Socket:Connector: Lemo coaxial, can be used as a DC output, a DC input for an external signal, a trigger input or a trigger outputDC Output Signal: DC version of the signal on thedetector 1, delayed 0.8 s - Fast, Inst., short circuit protectedOutput: 0 to 4.0 VDC, 50 mV/dBUpdate Rate: 160 times a secondMax.
Download Bellsouth 2250 Bk Manual 2017
Load: 10 kΩ // 1 nFOutput Impedance: Typically 100 ΩDC Input:Voltage Range: 0 to 4 V, max.1 to 6 VResolution: 5 mV, 800 stepsTrigger Input:Voltage Range: 0 to 4 V, max.1 to 6 VTrigger Level: 2 V, duration 12.5 msTrigger Output:Level: 4 VDuration: Throughout measurements. Note 1: When both detectors are set to, it is not possible to select the same frequency weighting for the two detectorsNote 2: Time weightings F, S and I are available simultaneouslyNote 3: If the Aux 1 and Aux 2 sockets are used for input, the signals(s) can be displayed and storedNote 4: Values for are sampled 40 times a second and are derived from the signal on thedetector with a pre-selected time weighting - F, S or I. The class width is 0.5 dB. Seven percentiles (LXYN,T) are available during measurement at user selectable levels, 1% - 99%. Detectors:Two detectors with independent frequency weightings.
One detector is andetector and the other can be set up as a Peak detector or an additional RMS detector, allowing two independently weighted RMS detectors in parallel, each providing three exponential time weightings in parallel.RMS: Three simultaneous exponential time weightings, Fast, Slow, Impulse and a linear averaging detector. Selectable frequency weighting A, C or LinOverload Detector: Monitors all the frequency weighted channelsExchange Rate: 3 dB - in addition 4 or 5 dB can be selectedCriterion Level: Can be set in the range 70 - 100 dBThreshold Level: Can be set in the range 0 - 100 dB.
Aux 1 Socket:Connector: Lemo coaxial, can be used as an AC output or a DC input for an external signalAC Output Signal: Range adjusted AC output, unweighted or with the frequency weighting selected on thedetector 1 - short circuit protectedOutput: 1 Vrms corresponds to full scale indicationMax. Load: 10 kΩ // 1 nFOutput Impedance: Typically 100 ΩDC Input:Voltage Range: 0 to 4 V, max.1 to 6 VResolution: 5 mV, 800 stepsAux 2 Socket:Connector: Lemo coaxial, can be used as a DC output, a DC input for an external signal, a trigger input or a trigger outputDC Output Signal: DC version of the signal on thedetector 1, delayed 0.8 s - Fast, Inst., short circuit protectedOutput: 0 to 4.0 VDC, 50 mV/dBMax. Load: 10 kΩ // 1 nFOutput Impedance: Typically 100 ΩDC Input:Voltage Range: 0 to 4 V, max.1 to 6 VResolution: 5 mV, 800 stepsTrigger Input:Voltage Range: 0 to 4 V, max.1 to 6 VTrigger Level: 2 V, duration 12.5 msTrigger Output:Level: 4 VDuration: Throughout measurements. Note 1: When both detectors are set to, it is not possible to select the same frequency weighting for the two detectorsNote 2: Time weightings F, S and I are available simultaneouslyNote 3: If the Aux 1 and Aux 2 sockets are used for input, the signals(s) can be displayed and storedNote 4: Values for statistics are sampled 40 times a second and are derived from the signal on thedetector with a pre-selected time weighting - F, S or I.
The class width is 0.5 dB.(LXYN,T) are available during measurement at user selectable levels, 1% - 99%. A complete level distribution is stored. Detectors:Simultaneous detection of RMS and Peak with independent frequency weightings: Three selectable exponential time weightings - Fast, Slow Impulse - and a linear averaging detector. Selectable frequency weighting A, C or LinPeak: Selectable frequency weighting C or LinOverload detector: Monitors all the frequency weighted channelsExchange Rate: 3 dB - in addition 4 or 5 dB can be selectedCriterion Level: Can be set in the range 70 - 100 dBThreshold Level: Can be set in the range 0 - 100 dB.