MODEL 9350C PRECISION LABORATORY ACCURACY

The Calibration Workstation Model 9350C is an MICROPHONE automated, accurate, turnkey, PC-based system offering cost- effective calibration of ¼ in, ½ in, and 1 in condenser microphone CALIBRATION cartridges (open-circuit sensitivity), condenser microphone cartridges with preamplifiers (closed-circuit sensitivity), as WORKSTATION well as microphone Frequency Response Function. In addition, the system provides for conformance testing of microphone preamplifiers and acoustic calibrators: this includes pistonphones ■ Complies with IEC 61094-6 and IEC 60942 as well as speakerphone-based calibrators. ■ Streamlined, easy and intuitive operation throughout Under complete software control, the 9350C operates in these ■ Comma Separated Variable (CSV) export of calibration data for integration into an existing database four modes: ■ Condenser Microphone Calibration ■ Easy and fast retrieval of calibration certificates from a model/ ■ Condenser Microphone & Preamplifier Calibration serial or asset number filtered list ■ Preamplifier Conformance Test ■ Automatic free-field and random incidence correction curves ■ Sound Source Calibration (pistonphone, speakerphone, etc.) applied for those types of

■ Built-in system verification procedures The Model 9350C provides consistent and reliable calibrations and conformance tests with the highest possible accuracy. ■ Pass/fail classification of the Microphone Under Test is available by use of frequency dependent limit lines System verification procedures assure a stable, consistent operating environment and reduce systematic and random ■ Automatic test parameter setup for PCB Piezotronics, errors to a minimum. With easy, user-friendly operation and Larson Davis, G.R.A.S., Brüel & Kjær, and other microphone manufacturers proven stepped sine excitation method, the 9350C provides fast, consistent, reliable performance and excels in efficient, high- ■ Prints customizable ISO 17025 compliant calibration volume transducer calibrations. The system also allows for easy certificates integration of customized calibration certificates.

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IECEx

IECEx IECEx SPECIFICATIONS SPECIFICATIONS (continued) Performance Physical ¼ in, ½ in, and 1 in externally polarized System Warm-Up Time 30 minutes Microphone Types Calibrated (120 V and 200 V) and pre-polarized Main Voltage Supply 115 V - optional 220 V condenser microphones Electronic Controller Chassis Open-circuit sensitivity, pressure response, Microphone Calibration free-field response, and random incidence Type 4U 19” Rack Mount Case response 48.3 x 17.8 x Dimensions (H X W X D) 19 x 7 x 17.1 in Closed-circuit sensitivity, pressure 43.4 cm Microphone Calibration with response, free-field response, and random Sound Isolation Chamber Preamplifier incidence response 53.3 x 43.2 x Dimensions (H X W X D) 21 x 17 x 20 in Output sound pressure level, frequency and 50.8 cm Pistonphone Calibration distortion Weight 28 lb 12.8 kg ¼ in and ½ in traditional Preamplifier Types Calibrated (28 V and 120 V) and ICP Preamplifier Conformance Check Frequency response and gain

Single level/single frequency insert voltage technique (Per IEC 61094-5) and Calibration Method Electrostatic Actuator Response (Freq. ~Certificate of Calibration~ Response) (Per IEC 61094-6) Description: Free-Field Microphone Customer : TMS Rental Manufacturer: Larson Davis Model Number: 2620-PM 20 Hz to upper limiting frequency of Serial Number: 1007 Frequency Range 5 Microphone Under Test 0

Measurement Uncertainty -5 ± 0.3 dB dB (at Microphone Reference Frequency) -10

-15 PCB Piezotronics, Larson Davis, G.R.A.S. 10 100 1000 10000 100000 Frequency [Hz] Test Results: Correction Curves - Supplied and Brüel & Kjær microphones Sensitivity: 250 Hz 1 kHz -48.37 -48.43 dB re. 1V/Pa 3.82 3.79 mV/Pa Manual data entry capable into text file Cal. Results: In Tolerance

Frequency Response Characteristics : The upper curve is the free field characteristic for the microphone with protection grid. The lower curve is the pressure response recorded by electrostatic actuator. Correction Curves - Other Yes Sensitivity : The stated sensitivity is the open-circuit sensitivity. When used with a typical preamplifier the sensitivity will be 0.2 dB lower. Polarization Voltage : 200 V Traceability : The calibration is traceable through 822/278767-10. Calibration Data Management Yes Notes : Calibration results relate only to the items calibrated. This certificate may not be reproduced, except in full, without written permission. This calibration is performed in compliance with ISO 9001, ISO 17025 and ANSI Z540. Automatic Pass/Fail Classification Yes uncertainty at 95% confidence level: 0.30 dB. Calibrated per procedure PRD-P204. Accuracy Verification Test Yes User Note : As Found / As Left: In Tolerance. Calibration Date: 6-Apr-2012 13:45:00 : 76 (24) °F (°C) Due Date: Humidity: 27 % Operator : Ed Devlin Ambient Pressure: 1000.9 mbar Reference Microphone Approval: Reference Equipment Used: Manuf. Model Serial Cal. Date Due Date GRAS 40AG 77606 9/14/2011 9/14/2012 Type ½ in Precision Condenser CALIBRATION CERT 2649.01 Page 3 of 4 Sensitivity 12.5 mV/Pa Calibration Certificate Frequency Range 3.15 - 20,000 Hz A calibration certificate may be generated and Dynamic Range 19 - 162 dB (re. 2 x 10-5 Pa) results saved in the software database. Polarization Voltage 200 Volts Transfer Sound Source Sound Pressure Level 114 dB (re. 2 x 10-5 Pa) Frequency 251.2 Hz ± 2 Hz Distortion < 2 %

The Modal Shop, Inc. offers structural vibration and acoustic sensing systems and services for various applications in design and test laboratories as well as manufacturing plants. An extensive sound and vibration rental program, precision calibration systems, and both modal and vibration shakers are designed to simplify test phases. Non Destructive Testing Systems help manufacturers provide 100% quality inspection of metal components. The Modal Shop, Inc. is a subsidiary of PCB 10310 Aerohub Blvd, Cincinnati, OH 45215 USA Piezotronics, Inc., and PCB® is a wholly owned subsidiary of MTS Systems Corporation. Toll-Free in the USA: 800 860 4867 Phone: 1 513 351 9919 | Email: [email protected]

© 2020 The Modal Shop, Inc. In the interest of constant product improvement, specifications are subject to change without notice. PCB®, ICP®, Swiveler®, Modally Tuned®, and IMI® with associated logo are registered trademarks of PCB Piezotronics, Inc. in the United States. ICP® is a registered trademark of PCB Piezotronics Europe GmbH in Germany and other countries. UHT-12TM is a trademark of PCB Piezotronics, Inc. SensorLineSM is a service mark of PCB Piezotronics, Inc. SWIFT® is a registered trademark of MTS Systems Corporation in the United States. All other trademarks are property of their respective owners. DS-0007 revF

MTS Sensors, a division of MTS Systems Corporation (NASDAQ: MTSC), vastly expanded its range of products and solutions after MTS acquired 2 PCB Piezotronics, Inc. in July, 2016. PCB Piezotronics, Inc. is a wholly owned subsidiary of MTS Systems Corp.; IMI Sensors and Larson Davis are divisions of PCB Piezotronics, Inc.; Accumetrics, Inc. and The Modal Shop, Inc. are subsidiaries of PCB Piezotronics, Inc.

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