Manufacturers' Specifications
Analogue Inputs
Microphone and Line - selectable via separate switch Maximum input signal ± 8 V Peak, depends on range setting, protected up to 150 V Microphone input : 7-pin B&K socket Preamplifier voltage : 120 V ± 8%, 3 mA Polarization voltage : 0 V or 200 V ± 1% Line input BNC Input impedance : 1 Mohm // 120 pF Measurement Ranges Upper Limit : 135 dB for both microphone and line input Maximum Peak : 138 dB for both microphone and line input Lower Limit : Microphone input A-weighted : 22 dB or 26.8 µV B weighted : 24 dB or 27.6 µV C-weighted : 29 dB or 29.2 µV Linear : 31 dB or 29.8 µV Flat : 56 dB or 34.9 µV 1kHz - 1/3 octave : 15 dB or 23.5 µV Lower Limit : Line Input A-weighted : 18 dB or 25.1 µV B weighted : 18 dB or 25.1 µV C-weighted : 18 dB or 25.1 µV Linear : 21 dB or 26.4 µV Flat : 25 dB or 27.9 µV 1kHz - 1/3 octave : 10 dB or 3.2 µV Input Amplifier Amplifier gain : - 10 to + 30 dB in 10 dB steps Additional gain : 0 to 10 dB in 0.1 dB steps for calibration Measurement range : 1.0 µV to 5.6 V RMS, corresponds to SPL values from 0 to + 135 dB SPL with a microphone sensitivity of 50 mV/Pa. Amplifier accuracy : < 0.2 dB error between any gain step Frequency Response A, B, C network : In accordance with BS EN 60651, BS EN 60804 Flat : 2 Hz to 20 kHz ± 0.2 dB and 0.4 Hz to 22 kHz + 0.2 or - 3 dB Linear : 30 Hz to 16 kHz ± 0.2 dB and 17.8 Hz to 22.4 kHz + 0.2 or - 3 dB Overload detector : Operates in accordance with BS EN 60651, BS EN 60804, the overload detection starts at 6dB above full scale setting (sine wave) Analogue to Digital Converter Converter type : Sigma delta Sampling rate : 50 kHz Filters and Networks Digital filter type - IEC 61260 class 1 : Serial : 8-pole 1/3 and 1/1 octaves. Butterworth type IIR filters Parallel filters : 6-pole 1/3 and 1/1 octaves. Butterworth like type IIR filters Frequency range : 1/3 octave filters : 1 Hz to 20 kHz in 1/3 octave band steps 1/1 octave filters : 1 Hz to 16 kHz in 1/1 octave band steps Noise bandwidth error : Max. 0.1 dB Spectral weighting networks : A : B : C and Linear, Flat in accordance with BS EN 60651 type 0, BS EN 60804 type 0 True A, C and Flat in real time mode in parallel with full 1/1 or 1/3 octave band mode Level Detector Detector type : Digital true RMS : In accordance with BS EN 60651 type 0, BS EN 60804 type 0 Resolution : 0.1 dB - 0.01 dB for certain functions Accuracy : Measured with 1 kHz sine wave, 1/3 octave band selected 5 dB above to 70 dB below full scale : <0.2 dB 70 dB below to 80 dB below full scale : <0.5 dB 80 dB below to 90 dB below full scale : <2.0 dB Time constants : F, S and I, Peak + and Peak - simultaneously, in accordance with BS EN 60651 type 0. In addition Peak Wide band is measured whenever a spectral weighting network is selected Integration selection : Leq periods are user selectable from 1 second to 100 Integration setting time : <1 sec or error less than 0.1 dB Crest factor capability : 8 dB crest factor margin at full scale increasing to 98 dB at 90 dB below full scale Linearity range : 80 dB according to BS EN 60804 type 1, + 5 dB above to 75 dB below full scale. 75 dB type 0 Pulse range : 83 dB according to BS EN 60804 type 1 Peak Detector Dynamic range : Measured from 8 dB above full scale down to the values listed below : A : B and C : 43 PeakW and 58 Peak+ / Peak- Lin / Flat : 43 PeakW and 43 Peak+ / Peak- Filters : N/A PeakW and 58 Peak+ / Peak- Accuracy ± 1.5 dB. Frequency response - PeakW : 35 Hz to 20 kHz ± 0.5 dB, continuous sine wave 15 Hz to 22 kHz ± 3 dB, one period of a sine wave Frequency response - Peak+ / Peak- : Determined by the applied spectral weighting function (network) Display Display type : LCD, graphical with switchable back light Picture resolution : 240 x 64 (w x h) pixels Graphics range : 0 to 90 dB below full scale Graphics graduation : 0.5 dB on bar graph Numerical graduation : 0.1 dB, 0.01 dB for certain functions Range for results : - 99.8 dB to + 227.0 dB Display printouts : Via RS-232 interface to optional printer, alphanumeric and graphical Memory Capacity : 100,000 values Memory size : 256 Kilobyte Storage lifetime : more than 10 years, internal Li battery Analogue Outputs AC output : BNC socket. May be spectrally weighted (A or C) by use of Filter Unit Nor 237 Output impedance : < 10 ohms, short-circuit protected Output level : Full scale corresponds to 1 VRMS or 2.8 V PEAK Frequency response : 1 Hz to 40 kHz ± 0.3 dB, input amplifier set to 0 dB gain DC output : pin 14 I/O socket. GND at pin 13 Output level : full scale corresponds to 1 VDC Sensitivity : 0.01 VDC/dB Output impedance : <10 ohm, short-circuit protected Digital Interfaces Controllable : most of the functions of the SA 110 are remotely controllable via the interfaces, and the effect of pushing any front panel key can be simulated. Not controllable : On / Off switch, Input selector and Polarization Voltage selector Serial Interface : 2 x RS-232, V.24. Galvanically insulated from analogue ground Baud Rates : 150 to 9600 in standardized steps Digital Inputs : 2 Digital Outputs : 6 output lines for control of external equipment Environmental Temperature operating range : -10 to +50 °C, provided no condensation Temperature drift, without microphone : 0.002 dB/°C, within the range -10 to +50 °C. Temperature drift of the polarization voltage has been taken into account. Humidity operating range : 0 to 90% Sensitivity to humidity : negligible, determined solely by the microphone used Vibration operating/storage range : 2 g, in accordance with the IEC 68-2-6 test Fc. Vibration sensitivity : negligible, determined solely by the microphone used Magnetic sensitivity : negligible, determined solely by the microphone used EMC : fulfills EN 50081-1 and EN 50082-1 General Warm up time : less than 30 sec for 0.1 dB accuracy, instrument only - not the 1220 Power requirements : internal batteries or external DC voltage Voltage : 6.5 to 15 VDC Battery type : dedicated battery pack Nor 316. Six Ni-Cd cells : 7.2 V size C Charge time : 12 hours Current consumption : 530 to 680 mA Dimensions : 56 x 380 x 168 mm or 2.2 x 15.0 x 6.6 inches (d x w x h) Weight : 2.2 kg with batteries
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