Features

• A/C or battery powered

• Built-in wideband/octave-band pink noise generator

• Wideband or weighted SPL readings in each 1/3 octave band from 25Hz to 20 kHz.

• RT60 mode displays reverberation time up to 10 seconds with 10ms resolution.

• LED matrix plots the decay characteristic.

Specifications

ANALYZER SENSITIVITY (for 9dB Reference Level)

• 40 to 139dB-SPL or dBAQ-SPL, microphone: -60 to +39dBm, line.
• Maximum display range extends measurement limits to +9 and -27 re. ref. level.

DISPLAY RANGE / ACCURACY

0.5, 1 or 2 dB / step with relative Reference Level and indicated display error less than =0.25 dB; 3dB/step with less than ±0.5dB error.

FILTER CHARACTERISTICS

2 polepair filters on ISO one-third octave centers, 25 Hz to 20 kHz. Response exceeds ANSI S1.11/Class II/1971 standard. Relative filter accuracy ±0.5dB.

RECTIFIER CHARACTERISTICS

PEAK or 0.25, 1 or 4 sec. log-averaging response. Crest factor greater than 20dB above indicated reference level.

REVERBERATION ANALYSIS

• RT60 readout internally extrapolated from 30 or 15 dB initial decay. Measurements to 9.99 seconds with 10 ms resolution; an exclusive averaging system increases low frequency measurement accuracy.
• Accuracy ±3%, ±2 counts for decays greater than 0.1 second. Decay plot has vertical resolution of 0.5, 1, 2 or 3 dB/step, horizontal integration periods of 7.5, 15, 30 or 60 ms/step.

MICROPHONE INPUT

200 ohms, balanced with XLR connector. MIC CALIB adjustment accomodations microphone sensitivities between -60 and -48dB re, 10 u_bar.

LINE INPUT

100K-ohms, unbalanced: calibrated to ±0.5 dB.

PINK NOISE SOURCE

Digitally synthesized, pseudo-random; ±0.5 dB spectral accuracy. Selectable wideband or octaveband output with 2-pole filters on ISO centers, 63 Hz to 8 kHz. Manually-gated, unbalanced output is variable to ± 5 dBm.

EXTERNAL OSCILLOSCOPE OUTPUT

BNC connectors for scope vertical and sweep trigger; external scope display has 7.5, 15, 30 or 45dB dynamic range.

INTERFACE CONNECTOR

Permits external control of memory storage, pink noise gating and decay plot scan; provides display data output and internal clocking signals for interfacing with digital peripherals.

POWER REQUIREMENT

115/230 VAC, ± 10% ; 50/60 Hz ; 25 Watts.

INTERNATIONAL BATTERY

3-hour typical operating life ; recharges in 8 hours.

OPERATING ENVIRONMENT

0 to 50 degrees C ; 0 to 90% relative humidity at 40 degreees C.

SIZE AND WEIGHT

(including cover) 135mm H x 394 mm W x 292 mm D : 7.7 kg.

MICROPHONE

NOT SUPPLIED, optionally available from Inovonics.