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| MEASURE all types of sound, check that LEGAL LIMITS
in factories and residential areas are met, compare lawn mowers, paper
shredders etc, measure the effect of sound proofing or double glazing. HAND HELD self contained unit has "A" weighted frequency response to compare both low and high frequency annoyance. CALIBRATOR is built-in, linear measurement range from 40 dB (public library) to 120 dB (overhead jet take-off). PEAK sound response, even with pulsating or irregular soungs, just set knob to dB, LED flashes when sound exceeded, or turn knob till LED flashes and read dB, no flickering needle. DATA output shows when dB exceeded, for computer. applause timing, "Wear Ear Defenders" sign, intruder alarm, FLASH PHOTOGRAPHY, disco lights, chart recorder etc. DESIGNED to BS 5969, internal battery or 9 V at 20 mA, 4 x 7 x 14 cm, 300 g. |
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| 10 Hz - 200 kHz in four overlapping ranges, logic (TTL or
CMOS) and 0 - 1 V variable sine and square wave outputs, linear frequency
scale, no tuning "bounce", needs 12 V at 10 mA, 4 x 7 x13 cm,
250 g. "calibration was also very good", RP in Glasgow. |
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| Program your own tunes, any of millions - not just 24, choose
your own, make up your own, change them in seconds, surprise guests, 10
notes programmable for pitch and duration by push buttons and colour coded
wires, volume and tempo controls, 3W output, rich bell sound, runs from
bell transformer or 12 V, legal to use in a car, 5x 7 x 14 cm, 450 g. "very satisfactory", FPT in London. |
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