User`s manual
Table Of Contents
- CONTENTS
- 1 INTRODUCTION
- 2 THE CLIO SYSTEM
- 3 CLIO INSTALLATION
- 3.1 MINIMUM PC CONFIGURATION
- 3.2 FW-01 DRIVERS INSTALLATION UNDER WINDOWS XP
- 3.3 FW-01 DRIVERS INSTALLATION UNDER WINDOWS VISTA AND 7
- 3.4 SOFTWARE INSTALLATION
- 3.5 THE 'CLIO BOX'
- 3.6 RUNNING CLIO FOR THE FIRST TIME
- 3.7 SYSTEM CALIBRATION
- 3.8 CLIO SERIAL NUMBER AND DEMO MODE
- 3.9 TROUBLESHOOTING CLIO INSTALLATION
- 4 CLIO BASICS
- 5 SYSTEM OPERATIONS AND SETTINGS
- 6 COMMON MEASUREMENT INTERFACE
- 7 SIGNAL GENERATOR
- 8 MULTI-METER
- 9 FFT, RTA AND “LIVE” TRANSFER FUNCTION
- 10 MLS & LOG CHIRP
- 11 SINUSOIDAL
- 12 WATERFALL , DIRECTIVITY & 3D
- 12.1 INTRODUCTION
- 12.2 WATERFALL, DIRECTIVITY & 3D CONTROL PANEL
- 12.3 WATERFALL SPECIFIC CONTROLS
- 12.4 MAKING A CUMULATIVE SPECTRAL DECAY
- 12.5 DIRECTIVITY SPECIFIC CONTROLS
- 12.6 MEASURING LOUDSPEAKER SINGLE POLAR DATA (1D MODE)
- 12.7 REPRESENTING SINGLE POLAR DATA
- 12.8 3D SPECIFIC CONTROLS
- 12.9 MEASURING LOUDSPEAKER SINGLE POLAR DATA (3D MODE)
- 12.10 MEASURING FULL SPHERE LOUDSPEAKER POLAR DATA (3D MODE)
- 12.11 REPRESENTING 3D BALLOON DATA
- 12.12 EXPORT 3D BALLOON DATA
- 13 MEASURING IMPEDANCE AND T&S PARAMETERS
- 14 LINEARITY & DISTORTION
- 15 ACOUSTICAL PARAMETERS
- 16 Leq LEVEL ANALYSIS
- 17 WOW AND FLUTTER
- 18 WAVELET ANALYSIS
- BIBLIOGRAPHY
- NORMS

Figure 10.11
Any other reflecting surface is further than the floor. If the microphone is directly
connected to the CLIO board remember to switch the microphone power
supply on. It is also very important to remember to type in the correct
microphone sensitivity in the microphone Dialog Box, this is crucial for setting the
correct measurement level. We have already dealt with level before, however here,
things are more dangerous. Supposing the amplifier used has a gain of 30dB, a
common value, leaving the CLIO output level at 0dB will cause the amplifier to
deliver the equivalent of circa 40W/8Ohm continuous. If the amplifier handles this
power you will almost certainly burn your tweeter. If the amplifier is of lower power
it is likely that it will saturate and burn your tweeter even faster! To avoid this
embarrassing event, do as follow: enable CLIO input auto-range, open the Multi-
Meter and select Pressure from the Parameter Drop Down. You will get the reading
of your environmental noise. Fig.10.12 shows ours, we hope yours is lower!
Figure 10.12 and 10.13
Now set CLIO output level to a very low value, -30 to -40dB and with the
microphone positioned 70cm to 1m from the speaker start the MLS & LOG CHIRP
signal. Increase the CLIO output level until you read 85 to 90 dBSPL as in
Fig.10.13. Now go back to the MLS & LOG CHIRP Menu, select dBSPL as the Y scale
unit and finally click on Go. The speaker we are testing is a glorious Rogers
10 MLS & LOG CHIRP 123