User`s manual

CORRECTING THE MICROPHONE RESPONSE
By checking the Microphone Correction check boxes the software will correct the
measured curve according to the data stored in two text files named “MICA.CAL”
(for input channel A) and “MICB.CAL” (for input channel B).
The microphone correction files, if present, must be placed inside the
installation folder (usually c:\program files\audiomatica\clio 10\).
Note: The maximum number of correcting points allowed is 100.
The example below shows a sample text file created to store the microphone
frequency response:
Freq dB Phase
1000 0 0
4000 0.25 0
8000 0.33 0
10000 0.5 0
15000 1.75 0
20000 2.5 0
Note: microphone correction will affect the measured curve only if dBSPL
(or dBPa or dBPa/V) is selected as Y Scale unit.
If your microphone came with frequency calibration data supplied by Audiomatica
(see 2.2.3) you can find the correction file inside the furnished disk.
The file is stored with the name serialnumber.cal ; for example in the disk given
with the microphone with serial 9501255 you will find the “9501255.CAL” file.
To use it you must:
1) Copy it inside the CLIO 10 installation folder
2) Rename it according to which input channel it is connected; “MICA.CAL” for
channel A or “MICB.CAL” for channel B.
DISPLACEMENT, VELOCITY, ACCELERATION, CURRENT, POWER
Set the sensitivity for each of these units where used in the program.
dBREL REFERENCE
Sets the voltage reference for the unit dBRel.
dBPa/V REFERENCE
When measuring with dBPa/V it is possible to use as reference level:
- the dBRel reference voltage
- CLIO output level (balanced)
- CLIO output level (unbalanced)
- QCBox Output
- Output of any amplifier of a given gain in dB connected to the balanced output
5 SYSTEM OPERATIONS AND SETTINGS 65