
| Nor 840 | Real Time Multi-spectrum Analyzer, Sound Intensity System | £ 40 a day * |
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Features ♦ Dual channel measurements in true octave and third octave bands ♦ 0.1 Hz - 20 kHz frequency range in both channels in dual channel operation ♦ True A- and Lin spectral weighting networks in both channels ♦ Easy-to-use single-level menus and direct key control ♦ Large colour VGA display ♦ Microphone, line and charge inputs ♦ Powered from 12 VDC ♦ 80 dB dynamic range ♦ Internal memory for up to 32000 spectra ♦ Internal 3.5" MS-DOS compatible floppy disk drive ♦ IEEE-488, Centronics and RS-232C interfaces ♦ Multi-spectrum measurements (level vs. time) ♦ Internal signal generator ♦ Internal reverberation time calculations ♦ Sound intensity measurements - add a GRAS 50AI Sound Intensity Probe ♦ True 1/12 and 1/24 octave filters ♦ 800 lines dual channel FFT ♦ Maximum Length Sequence (MLS) for measurements of level differences and reverberation time calculations ♦ Handy unit for field use |
| GRAS 50AI | Sound Intensity Probe |
| GRAS 51AB | Sound Intensity Calibration Unit |
| Nor 250 | Hemi-dodecahedron loudspeaker - 120 dB SWL |
| Nor 260 | Power amplifier with noise generator - 1 kW peak into 4 Ω load |
| Nor 330 | Battery Case for Nor 840, 5AH Ni-Cad [2 hours] battery + charger |
| Nor 1020 | Nor-Xfer PC software |
| Nor 1201 | Preamplifier - 1/2" with Lemo 1B connector - order extension cables as required |
| Nor 1220 | Measurement Microphone - 1/2" air condenser - free-field |
| Nor 1251 | Sound Calibrator- Class 1 |
| Nor 1264 | Tripod adaptor for low level measurements, twin microphone holder |
| Nor 1408 | Microphone preamplifier extension cable - 10 m long |
| Nor 1410 | Microphone preamplifier extension cable - 2 m long |