GRAS 12BA Instruction Manual
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GRAS 12BA Instruction Manual

1-channel ccp power module with teds support
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Instruction Manual
GRAS 12BA 1-Channel CCP Power Module with TEDS Support
GRAS 12BE 2-Channel CCP Power Module with TEDS Support
GRAS 12BB 4-Channel CCP Power Module with TEDS Support
GRAS 12BC 1-Channel LEMO Power Module with TEDS Support
GRAS 12BF 2-Channel LEMO Power Module with TEDS Support
GRAS 12BD 4-Channel LEMO Power Module with TEDS Support
LI0280 – 19 January 2022

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Summary of Contents for GRAS 12BA

  • Page 1 Instruction Manual GRAS 12BA 1-Channel CCP Power Module with TEDS Support GRAS 12BE 2-Channel CCP Power Module with TEDS Support GRAS 12BB 4-Channel CCP Power Module with TEDS Support GRAS 12BC 1-Channel LEMO Power Module with TEDS Support GRAS 12BF 2-Channel LEMO Power Module with TEDS Support GRAS 12BD 4-Channel LEMO Power Module with TEDS Support LI0280 –...
  • Page 3 Any technical documentation that is made available by GRAS is the copyrighted work of GRAS and is owned by GRAS. The content in this document is subject to change without notice. GRAS Sound & Vibration is not liable or responsible for any errors or inaccuracies that may appear in this document.

  • Page 5: Table Of Contents

    Table of Contents 1 | Introduction - - - - - - - - - - - - - - - - - - - - - - - - - 3 1.1 CCP Power Modules - - - - - - - - - - - - - - - - - - - - - 1.2 Traditional Power Modules - - - - - - - - - - - - - - - - - 2 | External Features...
  • Page 6 C.3 Información de seguridad - - - - - - - - - - - - - - - - - D | Warranty, Service and Repair - - - - - - - - - - - - - D.1 Warranty - - - - - - - - - - - - - - - - - - - - - - - - - D.2 Service and Repairs - - - - - - - - - - - - - - - - - - - - Index - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 45...

  • Page 7: Introduction

    GRAS 12BB (4-Channel CCP Power Module) • GRAS 12BD (4-Channel LEMO Power Module) When used in conjunction with the GRAS Mic Power Module App or an Audio Precision APx analyzer instrument (available separately) and a connected personal computer (PC), the modules can provide access to Transducer Electronic Data Sheet (TEDS) data on TEDS- enabled microphones.

  • Page 8: Traditional Power Modules

    • 40PH Array Microphones. Traditional Power Modules The GRAS LEMO Power Modules (12BC, 12BD and 12BF) are DC- powered pass-through power modules that provide power to microphones without signal degradation, gain modification, or attenuation. Power is provided through the USB C port when con- nected to a port that can supply the minimum 1.5 A required by the...

  • Page 9: External Features

    2 | External Features Figure 1 — LEMO and CCP power module features LED Displays There is an LED display for each microphone input on the module. There are up to four LED displays on the power module, depending on the model. Each LED display identifies a microphone input so an...
  • Page 10 PC / Power Interface USB-C Port The 12BA, 12BB and 12BE are powered through the USB-C port on the rear panel of the module when connected to a USB 2.0 or USB 3.0 port and draw a maximum of 500 mA. Since the modules do not affect gain or attenuation, there are no external switches or con- trols.

  • Page 11: Ccp Preamplifier Support

    The module can be rack mounted using a rack cradle (not included) or mounted directly to a work surface. CCP Preamplifier Support For CCP preamplifiers, the 12BA, 12BB and 12BE provide: • A constant current supply (4 mA ) sourced at 24 V DC per channel.

  • Page 12: Input/Output

    2.2 Input/Output Microphones providing the input signals are connected via BNC or LEMO connectors on the front panel of the power module. Output signals from the power module rear panel are connected via BNC connectors to the measurement system. | 12Bx Power Modules Instruction Manual...

  • Page 13: Operation

    APx500 measurement software starts and recognizes an attached supported GRAS power module, or when the list command is used in the GRAS Mic Power Module App with a supported GRAS power module. Once assigned, the number is displayed on the LED chan- nel indicator.

  • Page 14: Syscheck2 Support

    Pressure Standard ″ SysCheck2 Microphone Set. SysCheck2 is a GRAS-patented technology for verifying measure- ment chain integrity. When set up, this verification tool can per- form remote health checks on microphones, channel gain and cable integrity. SysCheck2-enabled microphones can also provide on-demand environmental data (temperature, barometric pressure and humidity).

  • Page 15: Connection And Configuration

    There are no external switches or controls on CCP or Standard Power (LEMO) Power Modules. 3.5.2 To configure the GRAS Power Module: 1) Connect the PC/Power Interface USB-C port to an available USB 2.0 or USB 3.0 port on the measurement PC.
  • Page 16 | 12Bx Power Modules Instruction Manual...

  • Page 17: Accessing Teds Data

    APx500 User’s Manual and the embedded help within the APx500 software for informa- tion about channel assignment and TEDS data. When used with the GRAS Mic Power Module App or an APx analyzer: •...
  • Page 18 The installation file (MicPowerModuleAppSetup.exe) can be down- loaded from the Audio Precision website (www.ap.com/download/ gras-12bx-mic-power-module-app/). To install the GRAS Mic Power Module App, download and then double-click on the install file to start the installation. Follow the instructions in the installation dialogs. The default installation...
  • Page 19 Running the Software Run the GRAS Mic Power Module App in a Command Prompt win- dow from the installation directory by typing the app executable name (MicPowerModuleApp.exe) followed by a command name and options and arguments. All commands are case-sensitive and most require an input (port) number to identify the port attached to the microphone.
  • Page 20 The teds command reads TEDS data from the microphone on the specified Mic Power Module port. The -i or --InputNumber option with the portnumber argument must be specified. Example >MicPowerModuleApp.exe teds -i1 Manufacturer ID|24 Manufacturer Name|GRAS Sound & Vibration Model Number|46 Version Letter|1 Version Number|5 Serial Number|265867 Template ID|27 Sensitivity @ reference condition|0.0492436116918724...
  • Page 21 Calibration Initials|PV Calibration Period (Days)|360 Options -i portnumber or --InputNumber portnumber The -i option is used to identify the ID of the connector from which to read TEDS data. It is a required option. The portnum- ber argument is also required and must match the ID shown on one of the power module LCD displays.
  • Page 22 -v fieldname The -v option selects a specific TEDS field name value to dis- play. The fieldname argument is case sensitive but the full name of the TEDS field name is not required. If an argument matches more that one TEDS field, all matching fields are dis- played with their values.
  • Page 23 4.1.2 Acquiring TEDS Data Using APx500 Software To access the TEDS features of supported GRAS power modules as part of an APx analyzer system, you must connect the hardware before launching the APx500 software, or ID numbers will not be assigned.
  • Page 24 APx500 software is not required for the power module to provide operational power to compatible microphone preamplifiers. How- ever, the GRAS Mic Power Module App or APx500 software is required to access a microphone's TEDS data. Installation and safety information for the APx analyzer instru- ment, the required APx500 measurement software (version 6.0.1 or...

  • Page 25: Accessing Syscheck2

    Power Module App When using SysCheck2-enabled microphones, such as the GRAS 246AO or 246AE, with a GRAS power module or APx analyzer that has a TEDS-enabled Mic Power Supply, you can run SysCheck2 from a Windows command prompt and do the following: •...
  • Page 26 All commands are case-sensitive and require an input number (port) to identify the port to which the microphone is connected. The input number can be specified using one of the following syntax options: --InputNumber portnumber portnumber When using the long option ( --InputNumber ) with commands, two hyphens are used as a prefix and a space is required between the option and the argument.
  • Page 27 Syntax sinegen -i | --InputNumber portnumber portnumber [-f{250|500|1000}] Options -i portnumber or -- InputNumber portnumber The port number (1-99) of the connected microphone. The frequency of the internal generated signal. Example >MicPowerModuleApp.exe sinegen -i2 -f 250 In this example, the internal sine generator in the microphone on port 2 generates a 250 Hz signal.
  • Page 28 In this example, the command turns on the red LED for 20 s, followed by the green LED for 15 s, followed by the blue LED for 10 s for the microphone on port 2. Description Returns the current programmed reference level in volts when entered with only the --InputNumber option.
  • Page 29 In this example, the stored reference temperature for port 2 is set to 25 °C Description Returns the current programmed reference pressure in millibars when entered with only the --InputNumber option. When a reference pressure is included in the command, the reference level is set to the defined pressure value in millibars.

  • Page 30: Using Syscheck2 With Apx500 Software

    SysCheck2 microphone is connected to an Audio Precision APx analyzer, either through a TEDS-enabled analyzer input that provides microphone power or through a supported GRAS microphone power module. For more information, see the documentation provided with APx analyzers and APx500 measurement software (version 7.0 or later).

  • Page 31: A | Lemo Microphone Power Supply Specifications

    Appendix A | LEMO Microphone Power Supply Specifications A.1 USB Interface Interface Type A Peripheral Interface Versions USB C / USB 2.0 Compatible with USB 2.0, 3.0 and USB C ports Power USB +5 V, 1.5 A max USB-C ports with Power Delivery Protocol, USB-A ports with fast charge (Battery Charger Protocol) A.2 External Power Aux Power Input...

  • Page 32: Microphone Channel

    A.3 Microphone Channel Input Channels 12BC - 1 x 7 pin LEMO Input 12BF - 2 x 7 pin LEMO Input 12BD - 4 x 7 pin LEMO Input Input impedance determined by Analyzer attached to the outputs Polarization 200 VDC ±2.0 V Voltage Polarization voltage is always supplied when unit is powered Pre-amp...

  • Page 33: General/Environmental

    004/108/EC and 93/68/EEC Emissions and immunity levels are influenced by the quality of interface and signal cables attached to the unit. Compliance was demonstrated using Audio Precision / GRAS cables. Safety UL 62368-1, Second Edition / CSA C22.2 No. 62368-1 Safety of...
  • Page 34 Temperature Range Weight 12BC: 390 g / 13.8 oz 12BF: 425 g / 15.0 oz 12BD: 494 g / 17.4 oz 30 | 12Bx Power Modules Instruction Manual...

  • Page 35: B | Ccp Microphone Power Supply Specifications

    USB +5 V, 500 mA max B.2 Microphone Channel Input Channels 12BA - 1 x BNC Input 12BE - 2 x BNC Input 12BB - 4 x BNC Input Input impedance determined by Analyzer attached to the outputs Mic Power...
  • Page 36 Microphone Channel table continued Output Channels 12BA - 1 x BNC Output 12BE - 2 x BNC Output 12BB - 4 x BNC Output Coupling Passive 10 Hz AC coupling filter (with 100 Ohm analyzer input impedance) Signal is passed through with passive AC coupling filter...

  • Page 37: General/Environmental

    004/108/EC and 93/68/EEC Emissions and immunity levels are influenced by the quality of interface and signal cables attached to the unit. Compliance was demonstrated using Audio Precision / GRAS cables. Safety UL 62368-1, Second Edition / CSA C22.2 No. 62368-1 Safety of...
  • Page 38 34 | 12Bx Power Modules Instruction Manual...

  • Page 39: Safety Information

    GRAS. Doing so may create safety hazards. Using this product in a manner not specified by GRAS can result in a safety hazard. exceed mains voltage ratings. This equipment is designed to operate only from a 50–60 Hz ac mains power source at 100–...
  • Page 40 ATTENTION! —This symbol alerts you to important operating considerations or a potential operating condition that could damage equipment. If you see this marked on equipment, refer to the Operator’s Manual or User’s Manual for precautionary instructions. FUNCTIONAL EARTH TERMINAL —A terminal marked with this symbol is elec- trically connected to a reference point of a measuring circuit or output and is intended to be earthed for any functional purpose other than safety.
  • Page 41 C.1.2 Disclaimer GRAS cautions against using their products in a manner not specified by the manufacturer. To do otherwise may void any warranties, damage equipment, or pose a safety risk to personnel.

  • Page 42: Consignes De Sécurité

    GRAS agréé. remplacer de pièces ou effectuer de modifications sans l’approbation écrite d’GRAS. Si c’est le cas, il pourrait y avoir des risques pour la sécurité. Utiliser ce produit d’une manière non pré- cisée par GRAS peut entraîner un risque pour la sécurité.
  • Page 43 être raccordées à un système protecteur de mise à la terre externe. C.2.2 Avis de non-responsabilité GRAS déconseille fortement l’utilisation de ses produits d’une manière non spécifiée par le fabricant. Une telle utilisation pourrait annuler toute garantie, endommager l’équipement ou présenter un...

  • Page 44: Información De Seguridad

    GRAS. reemplace partes ni haga modificaciones sin la aprobación por escrito de GRAS. Hacerlo podría causar riesgos de seguridad. El uso de este producto en una manera no especificada por GRAS puede resultar en un riesgo de seguridad.
  • Page 45 (aterrizada). C.3.2 Exención de responsabilidad GRAS advierte contra el uso de este producto de una manera no especificada por el fabricante. El hecho de no hacerlo de la manera indicada invalidaría las garantías, causaría daño al equipo, o repre-...
  • Page 46 42 | 12Bx Power Modules Instruction Manual...

  • Page 47: D | Warranty, Service And Repair

    The GRAS 12BA, 12BB and 12BE CCP Power Modules with TEDS Support are covered by a limited three year warranty provided by Audio Precision.
  • Page 48 44 | 12Bx Power Modules Instruction Manual...

  • Page 49: Index

    | Index auxiliary power supply, LEMO 7 CCP Microphone Power Modules description 3 specifications 31 commands SysCheck2 21 TEDS data 15 inputs microphone 8 LEMO auxiliary power supply 7 LEMO Microphone Power Modules description 4 specifications 27 MicPowerModuleAppSetup.exe 14 microphone inputs 8 outputs 8 Power Modules...
  • Page 50 specifications CCP Microphone Power Module 31 LEMO Microphone Power Module 27 support SysCheck2 10 TEDS 9 SysCheck2 commands 21 TEDS data commands 15 46 | 12Bx Power Modules Instruction Manual...
  • Page 51 | List of figures LEMO and CCP power module features ....5 12BB CCP 4-Channel Microphone Power Module ..7...
  • Page 52 48 | 12Bx Power Modules Instruction Manual...

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