Manual

1
1 Introduction
Congratulations on your purchase of the Opus Suite SLM 4-ch module.
The Opus Software Suite is a Sound and Vibration software that contains several modules:
• SLM 4-ch module : 4-channels, Class 1 (IEC 61672 and ANSI S1.43)
• SLM & 3Vib module : 1 SLM channel (same as SLM 4-ch module) and 3 vibration channels
(ISO 8041 and ISO 2631)
• Data Logger module
• Building Acoustic module
• Sound Transmission (ASTM E 336/ISO 140-4)
• Reverberation Time (ISO 3382)
• Speech Privacy (ASTM E 2638 and ASTM E 1130)
• Building Vibration module (DIN 45669-1 and ANSI S2.46)
• Intensity module (IEC 1043)
The Opus Suite is intended to run on a Concerto. The software can also be installed on a computer if
an Alto-6ch or an I-Track unit is connected. Moreover, some post-processing functions are available
on a PC even if no compatible unit is detected.
The current user’s manual presents the SLM 4ch Module.
General Specifications
Class 1 Integrating SLM
1 to 4 channels simultaneously
Conform IEC 60561/60804/61672; ANSI S1.42
Frequency span: 6.3 Hz to 20 kHz
Linearity range (50mV/Pa) : 25-119 dBA (Low) 37-130 dBA (High)
Simultaneous measurement
on 4 channels
LF, LS, LI & Lpk & LE & Leq (A, C & Z weightings)
Real time 1/3 octave band spectrum (IEC 1260 Type 1)
Time history resolution starting at 10 ms
854 lines FFT spectrum
Min & Max values logged for each period
Programmable measurement period
Real-time display
Time History, 1/3 octave spectrum, Numeric Indicator, FFT Spectrum,
Statistics and Camera.
Display up to 4 graphs with up to 4 plots per graph.
Miscellaneous
Audio Recording and Photo (on trigger or periodic)
Web Station mode with FTP transfer for Web monitoring
Multi-Purpose output generators