Casella-cel CEL-281 Manual do Utilizador descarregar pdf (Página 132)

CEL-6225 Dust Cover has no measurable effect on acoustic

performance of microphone.

Electrical substitution of microphone input for

calibration:

Not recommended to be performed by unqualified personnel.

The procedure requires the microphone assembly to be replaced

by the CEL-6100 Dummy Microphone and recommends use of

an oscillator with 600 Ω impedance.

Consult CEL for precise details.

Operating environment:

Temperature: -10 to +50 C,

(Effect on

accuracy: ±0.5 dB re 20

C at 65% RH),

Atmospheric

Pressure: 101.3 kPa ±10%

(1013 mbar, 760 mmHg),

Humidity: 30 to 90% RH (non-condensing),

(Effect on

accuracy: ±0.5 dB re 65% RH at 40

C),

Magnetic Fields: Negligible effect,

Vibration: Negligible effect.

Storage environment:

(without batteries)

Temperature: -10 to +50

Humidity: 30 to 95% RH (non-condensing).

Consult the battery Manufacturer for storage conditions with

batteries.

Technical Information

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Casella-cel CEL-281 Manual do Utilizador Página 132