CLIOwin 6.5 PCI User's Manual - Audiomatica Srl

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13.4 I SENSE Requires <strong>Audiomatica</strong> CLIOQC Amplifier and Switch Box model 2, 3 or 4. It is a simplified Constant Voltage method. Simplification arises as both device gain and sensing resistor (around 0.1 Ohm) is known. Fig.13.9 shows the CLIOQC Software Control Dialog Box. I Sense should be selected. Fig.13.10 shows required connections. Figure 13.9 INPUT A CLIO INPUT B OUTPUT A OUTPUT B LPT PORT CLIOQC AMPLIFIER&SWITCHBOX BLACK RED GAIN I SENSE FROM CLIO INPUT 1 INPUT 2 INPUT N GAIN=10dB(Model 1,2&3) GAIN=20dB(Model 4) TO CLIO Figure13.10 Before proceeding, whatever in MLS or Sinusoidal, remember to go in the Settings Dialog and select I Sense under Impedance. CLIO’s output level has to be set to a much lower level than in Internal Mode. We have seen before that with 10dBu out we had 0.316V at speaker terminals at resonance. Should you let this level you would have 7.75V at any Frequency! -20 to -30 dBu are reasonable output level to start with. The CLIOQC Amplifier gain is 10dB(Model 2&3) or 20dB(Model 4); it therefore multiply CLIO’s output by 3.16(Model 2&3) or 10(Model 4). As the output impedance is close to 0 no further attenuation occurs once the speaker is connected. Finally we deal with measuring accuracy in this case. The sensing resistor value has been stated as around 0.1 Ohm. It is very difficult to keep such a low value within a reasonable tolerance and therefore the real value is going to change between units. The default value that comes is 0.127 Ohm. User can further adjust this value using a reference resistor of known value in the 10 Ohm range (the real value can be eventually measured with high accuracy using internal mode). Simply take an impedance measurement of the known resistor and adjust the I Sense value displayed multiplying it by the ratio between the know resistor 132 Chapter 13 - Measuring impedance and T&S parameters
value and the marker reading at 1kHz. Example: known resistor value 10 Ohm, reading at 1kHz 9.3 ohm, I sense value 0.127 Ohm. Multiply 0.127 by 1.075268817, obtain 0.13655914, input this new value and check everything performing a new measurement. 13.5 CONSTANT VOLTAGE & CONSTANT CURRENT These were the standard approaches to measure impedance with traditional set of instruments. We will skip further theoretical discussion and go directly on how CLIO implements them. These methods both require two external components, a reference resistor of suitable and know value (where known means better than 1% tolerance) and a power amplifier. They also require two measures to be taken one after the other, changing connections in between. CLIO, by means of its processing tools can speed up things a lot but the whole procedure remains quite complicate. Whatever you are going to use MLS or Sinusoidal, all the measurement should be performed in Volts (the Y Scale should be dBV). 13.5.1 CONSTANT VOLTAGE Proceeding step by step we are going to create two files, one named “reference”, the second named “device”. The two measurement files must have identical settings and identical CLIO’s output level. We choose a sensing resistor, Rs, of 1 ohm 1%. Fig.13.11 shows connections for creating the reference file. The level you choose now is the total measuring level. INPUT A CLIO INPUT B OUTPUT A OUTPUT B RS BLACK RED POWER AMPLIFIER Figure 13.11 The reference measurement is shown in Fig 13.12. As expected the output of the amplifier appears as a straight line. Should not be so, this would not be a problem as the whole procedure compensate for any deviation in the frequency response. More interesting is the absolute level. As Rs value is small, this level appears nearly unchanged to the speaker. We read -12dBV that translate in 250mV. 0.0 CLIO 180.0 dBV Deg -10.0 108.0 -20.0 36.0 -30.0 -36.0 -40.0 -108.0 -50.0 -180.0 10 Hz 100 1k 10k 20k Chapter 13 - Measuring impedance and T&S parameters 133
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ELECTRICAL & ACOUSTICAL TESTS User'
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CONTENTS 1 INTRODUCTION ...........
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8.5.1 MEASURING AN INDUCTOR .......
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1 INTRODUCTION 1.1 ABOUT THIS MANUA
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12 Chapter 1 - Introduction
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2.1 THE PB-4281 PC BOARD AND SC-01
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2.2.3 THE MIC-01 (OR MIC-02) FREQUE
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2.4 THE QCBOX MODEL 4 AMPLIFIER & S
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Figure 3.1 2) 2 x Stereo mini jack
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3.3 HARDWARE REGISTRATION WITH WIND
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3.3.2 HARDWARE REGISTRATION UNDER W
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3.3.3 HARDWARE REGISTRATION UNDER W
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Figure 3.21 Let's now verify that t
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3.4 SOFTWARE INSTALLATION This para
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3.6 RUNNING CLIOWIN FOR THE FIRST T
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3.7.1 CALIBRATION VALIDATION Figure
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36 Chapter 3 - Installation
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38 Chapter 4 - Troubleshooting CLIO
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5.3 CLIOWIN DESKTOP The CLIOwin des
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It is possible to generate the foll
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Fig.5.5 Microphone sensitivity dial
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5.5.2 CONTROLLING A TURNTABLE Fig.5
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5.6.2 ANALYSIS MENU The Analysis me
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H Enables the Hold function. Equiva
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CTRL+P Swithces on and off the micr
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5.7.2 CONNECTING A MICROPHONE For a
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56 Chapter 5 - CLIOwin basics
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When you find a CLIOwin data file i
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Enters the Notes dialog where it is
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6.3.5 CALIBRATION File > Calibratio
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6.3.7 STARTUP OPTIONS AND GLOBAL SE
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7.3 BUTTONS AND CHECKBOXES Moves (s
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7.6 THE MLS TIME DOMAIN DISPLAY Whe
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8.2.1 TOOLBAR BUTTONS Starts the me
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This operating mode is very useful;
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Figure 8.7 With the Multi-meter run
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76 Chapter 8 - Multi-Meter
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9.2.1 TOOLBAR BUTTONS Starts an FFT
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9.4 FFT AND RTA OPERATION The FFT a
Page 82 and 83: 9.5 AVERAGING Averaging plays a ver
Page 84 and 85: 9.6 TIME DATA DISPLAY (OSCILLOSCOPE
Page 86 and 87: 10.2.1 TOOLBAR BUTTONS Starts an ML
Page 88 and 89: 10.2.4 MLS POST-PROCESSING TOOLS Lo
Page 90 and 91: 10.4 MEASURING FREQUENCY RESPONSE I
Page 92 and 93: 150.0 CLIO 180.0 150.0 CLIO 180.0 O
Page 94 and 95: MLS Menu, select dBSPL as Y scale u
Page 96 and 97: 10.4.4 PHASE & GROUP DELAY We used
Page 98 and 99: 110.0 CLIO 7.50 dBSPL ms 100.0 6.00
Page 100 and 101: 10.5 OTHER TIME DOMAIN INFORMATION
Page 102 and 103: utton. Any process you execute can
Page 104 and 105: 104 Chapter 10 - MLS
Page 106 and 107: 11.2.1 TOOLBAR BUTTONS Starts the s
Page 108 and 109: Stepped is also not checked. Typica
Page 110 and 111: 11.3 A BRIEF DESCRIPTION ON SETTING
Page 112 and 113: 11.3.3 GATING Enabling Gating allow
Page 114 and 115: 11.4 DISTORTION AND SETTINGS Sinuso
Page 116 and 117: Finally Fig.11.12 shows the distort
Page 118 and 119: 12.3 WATERFALL BASICS Figure 12.2 W
Page 120 and 121: 12.4 MAKING A CUMULATIVE SPECTRAL D
Page 122 and 123: Let's now change the CSD aspect aga
Page 124 and 125: Figure 12.11 12.5.3 TAKING THE MEAS
Page 126 and 127: Figure 12.17 The final result for o
Page 128 and 129: If you are novice in using CLIO or
Page 130 and 131: -10.0 CLIO dBV -30.0 -50.0 -70.0 -9
Page 134 and 135: Figure 13.12 Lets proceed now with
Page 136 and 137: The figure shows us we are going to
Page 138 and 139: 13.7 THIELE & SMALL PARAMETERS 13.7
Page 140 and 141: L 1kHz L 10kHz Inductance at 10kHz
Page 142 and 143: Now we can save our complete result
Page 144: [19] M.O. Hawksford, “Digital Sig
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CLIOwin 6.5 PCI User's Manual - Audiomatica Srl

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