KONDENSATORMIKROFONE FÜR STUDIO - UND MESSTECHNIK M I C R OT E C H G E F E L L Schalldruck-Kalibrator 4000 Kl. 1 Sound Calibrator 4000 Cl. 1 MICROTECH GEFELL GMBH GEORG - NEUMANN - PLATZ D-07926 GEFELL INTERNET http://www.microtechgefell.de e-mail [email protected]

The sound calibrator operating principle Specifications Sound Calibrator 4000 C€ Certifikate Complies with ANSI S 1.40 yes Sound pressure level (re: 20 |iPa) 114.0 ± 0.2 dB Typical change in SPL per year < 0.02 dB Time for level to stabilise < 2 sec. Microphone cartridge size 1 ",1/2", 1/4" Controls Power-on push button with green LED indication. Automatic shut-off when the microphone is removed (except for 1/4") Ambient pressure range 65 - 108 kPa Battery live-time > 30 hours External supply voltage 7.5 -15 Vdc. Automatic shout-off when VBATT< 7.5 Vdc Safety EN 61010-1,1993 portable equipment...

Calibrator coupler sound pressure level (dB) as a function of the relative humidity (%RH) Reference point Typical Class 0 value

There are adaptors available to also facilitate the calibration of 1/2"-inch and 1/4"-inch cartridges in addition to full-inch. A green LED illuminates when the sound pressure level inside the coupler cavity is correct. The power button. Depress to start generating the sound pressure level. The sound calibrator switches itself off automatically if the required sound pressure level cannot be established, for example if the microphone to be checked has not been inserted. The unit also switches itself off after approximately five minutes. Miniature loudspeaker generating the sound pressure level...