The Bruel & Kjaer 2231 Modular Precision Sound Level Meter 2 Hz - 70 kHz is a type 1 precision instrument. It is ideal for measurements according to the most stringent standards because of the comprehensive construction and extreme accuracy of the instrument. Bruel & Kjaer (B&K) Test Equipment Manuals: Buy Instruction Manual, Operating, Service Manual, Technical Documentation.

Calibration: Semi-automatic using and external Sound Level Calibrator The 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 output DC Output Signal: DC version of the signal on the detector 1, delayed 0.8 s - Fast, Inst., short circuit protected Output: 0 to 4.0 VDC, 50 mV/dB Update Rate: 160 times a second Max.

Load: 10 kΩ // 1 nF Output Impedance: Typically 100 Ω DC Input: Voltage Range: 0 to 4 V, max. -1 to 6 V Resolution: 5 mV, 800 steps Trigger Input: Voltage Range: 0 to 4 V, max. -1 to 6 V Trigger Level: 2 V, duration > 12.5 ms Trigger Output: Level: 4 V Duration: Throughout measurements. Note 1: When both detectors are set to, it is not possible to select the same frequency weighting for the two detectors Note 2: Time weightings F, S and I are available simultaneously Note 3: If the Aux 1 and Aux 2 sockets are used for input, the signals(s) can be displayed and stored Note 4: Values for are sampled 40 times a second and are derived from the signal on the detector 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. Une bouteille la mer 2012 rapidshare movies. One detector is an detector 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 Lin Overload Detector: Monitors all the frequency weighted channels Exchange Rate: 3 dB - in addition 4 or 5 dB can be selected Criterion Level: Can be set in the range 70 - 100 dB Threshold 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 signal AC Output Signal: Range adjusted AC output, unweighted or with the frequency weighting selected on the detector 1 - short circuit protected Output: 1 Vrms corresponds to full scale indication Max.

Rc4 stream cipher and its variants pdf printer. Load: 10 kΩ // 1 nF Output Impedance: Typically 100 Ω DC Input: Voltage Range: 0 to 4 V, max. -1 to 6 V Resolution: 5 mV, 800 steps 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 output DC Output Signal: DC version of the signal on the detector 1, delayed 0.8 s - Fast, Inst., short circuit protected Output: 0 to 4.0 VDC, 50 mV/dB Max.

Load: 10 kΩ // 1 nF Output Impedance: Typically 100 Ω DC Input: Voltage Range: 0 to 4 V, max. -1 to 6 V Resolution: 5 mV, 800 steps Trigger Input: Voltage Range: 0 to 4 V, max. -1 to 6 V Trigger Level: 2 V, duration > 12.5 ms Trigger Output: Level: 4 V Duration: Throughout measurements. Note 1: When both detectors are set to, it is not possible to select the same frequency weighting for the two detectors Note 2: Time weightings F, S and I are available simultaneously Note 3: If the Aux 1 and Aux 2 sockets are used for input, the signals(s) can be displayed and stored Note 4: Values for statistics are sampled 40 times a second and are derived from the signal on the detector 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%.