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

2.3 THE PRE-01 MICROPHONE PREAMPLIFIER
The microphone preamplifier PRE-01 has been designed to match Audiomatica’s
microphones MIC-01, MIC-02 and MIC-03. It is particularly useful when the
microphone has to be operated far from the analyzer or when weighted
measurements are needed. PRE-01 powers the microphone connected to its input
with an 8.2V phantom supply and adds a selectable weighting filter (A or B or C);
also available there is a 20 dB gain stage. The unit is operated with one standard
9V battery or with an external DC power supply.
2.3.1 TECHNICAL SPECIFICATION
Frequency response: 7Hz÷110kHz (-3dB)
Weighting filter: A, B, C (IEC 651 - TYPE I)
Phantom power supply: 8.2V (5600 Ohm)
Gain: 0 & 20dB (INTERNAL SETTINGS)
Input impedance: 5600 Ohm
Output impedance: 100 Ohm
Maximum output voltage (@1kHz): 25 Vpp
THD (@1kHz): 0.01%
Input noise (@20dB gain): 7uV LIN, 5.3uV A
Drive capability: ±7mA
Batteries duration: >24h (alkaline cell)
Size: 12.5(w)x19(d)x5(h)cm
Weight: 900g
2.3.2 USE OF THE PREAMPLIFIER
The MIC-01 or MIC-02 or MIC-03 microphone cable should be connected to the
preamplifier input while the preamplifier output requires connection to the analyzer
input. The unit is switched on with the POWER switch, while the TEST push-button
controls the state of the unit. Correct operation of the unit is indicated by the led
light being illuminated, if the LED fails to illuminate then either the batteries are low
or the external power supply is not connected. The FILTER switch inserts the
weighting filter. To choose the desired weighting filter type and to set the amplifier
gain you have to modify the unit settings with the dip switch operated from the
back panel.
NOTE: if the 20 dB gain stage is inserted the overall sensitivity (microphone + pre)
is 10 times higher. For example if your microphone has a sensitivity of 17.1 mV/Pa
and you amplify it by 20 dB then you get a sensitivity of 171 mV/Pa.
2 THE CLIO SYSTEM 19