Larson Davis CAL291 Technical Reference Manual Download | Manualshive

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I291.01 REV B

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Summary of Contents for CAL291

Page 1: ...I291 01 REV B Larson Davis CAL291 Technical Reference Manual...

Page 2: ...is subject to change without notice and should not be construed as a commitment or representation by PCB Piezotronics Inc This publication may contain inaccuracies or typographical errors PCB Piezotro...

Page 3: ...I291 01 REV B...

Page 4: ...2 Description 2 1 General Description 2 1 Microphone Ports 2 2 End Plate 2 3 Connectors 2 3 Input 2 3 Power 2 3 Chapter 3 Operation 3 1 Powering the CAL291 3 1 Input Signal 3 1 Microphone Placement 3...

Page 5: ...3 chapters and 1 appendix covering the following topics Chapter 1 Introduction Orients the user to the contents of this user manual and the features functions and measurement capabilities of the CAL29...

Page 6: ...of signals for verification of the amplitude phase accuracy of multi channel acoustic measurement systems Amplitude Phase Normalization The digital filters of the Larson Davis analyzers provide both a...

Page 7: ...arson Davis Inc at 801 375 0177 If you have not already done so please record your instrument s serial number located on the bottom of the instrument and the purchase date You may be asked to give thi...

Page 8: ...1 4 Accessories CAL291 Refernce Manual...

Page 9: ...ented in Chapter 3 Operation on page 3 1 General Description The CAL291 has a flat shape factor for optimal use on a table or desktop In use the sound intensity probe of the intensity measurement syst...

Page 10: ...orts CAL291 Refernce Manual Microphone Ports The microphone ports are on two opposite faces of an aluminum block mounted on one end of the CAL291 as shown in Figure 2 2 FIGURE 2 2 Aluminum Block with...

Page 11: ...lectrical input connector DC power connector and fuse are located on the end plate as shown in Figure 2 3 FIGURE 2 3 CAL291 End Plate Connectors Input BNC Female Power 2 5 X 5 5 mm coaxial connector c...

Page 12: ...2 4 End Plate CAL291 Refernce Manual...

Page 13: ...nnect to the AC power cable to main power and the DC output to the power connector on the end plate of the CAL291 Press the upper portion of the power switch I to switch on the CAL291 and press the lo...

Page 14: ...perating manual for the probe remove the space and spread the microphones far enough apart that they can be placed over the microphone port block Do not remove the microphone grid caps Slide them firm...

Page 15: ...ion less than 1 the sound pressure level at the microphones should be kept within the range of 25 dB 121 dB 1 kHz Adjust the signal generator output to obtain a sound pressure level at the microphones...

Page 16: ...to equal amplitude signals with zero phase difference between them within the limits of the device Thus any variation of the magnitude of the transfer function between channels from unity 0 dB and of...

Page 17: ...CAL291 Refernce Manual Amplitude Phase Normalization 3 5...

Page 18: ...ntensity test device specifications as pre sented in IEC 1043 1993 Instruments for the measurement of sound intensity and ANSI S1 9 1996 Instruments for measurement of sound intensity Input Input Conn...

Page 19: ...ength 25 6 cm 10 3 in Width 10 0 cm 4 0 in Height 5 3 cm 1 1 in Weight 1 0 kg 2 2 lb Power D C Power 9 16 Vdc 400 mA provided by PSA004 DC Power Supply included 90 240 VAC 50 60 Hz Frequency Hz Output...

Page 20: ...CAL291 Reference Manual Power A 3...

Page 21: ...1 2 Unpacking and Inspection 1 3 Accessories 1 3 D Description 2 1 End Plate 2 3 General 2 1 O Operation 3 1 Amplitude Phase Normalization 3 4 Input Signal 3 1 Microphone Placement 3 2 Poweriing the...

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