Motorola MVME712-12, MVME712A/D3, MVME712AM, MVME712B Cooling Requirements, FCC Compliance

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Specifications

Cooling Requirements

Motorola VMEmodules are specified, designed, and tested to operate reliably with an incoming air temperature range from 0 degrees C to 55 degrees C (32 degrees F to 131 degrees F) with forced air cooling. Temperature qualification is performed in a standard Motorola VMEsystem 1000 chassis. Twenty-five watt load boards are inserted in the two card slots, one on each side, adjacent to the board under test to simulate a high power density system configuration. An assembly of three axial fans, rated at 71 CFM per fan, is placed directly under the MVME card cage. The incoming air temperature is measured between the fan assembly and the card cage where the incoming airstream first encounters the module under test. Test software is executed as the module is subjected to ambient temperature variations. Case temperatures of critical, high power density integrated circuits are monitored to ensure component vendors specifications are not exceeded.

While the exact amount of airflow required for cooling depends on the ambient air temperature and the type, number, and location of boards and other heat sources, adequate cooling can usually be achieved with 5 CFM flowing over the module. Less air flow is required to cool the module in environments having lower maximum ambients. Under more favorable thermal conditions it may be possible to operate the module reliably at higher than 55 degrees C with increased air flow. It is important to note that there are several factors, in addition to the rated CFM of the air mover, which determine the actual volume of air flowing over a module.

FCC Compliance

These MVME712 family VMEmodules were tested in an FCC-compliant chassis, and meet the requirements for Class A equipment. FCC compliance was achieved under the following conditions:

1.Shielded cables on all external I/O ports.

2.Cable shields connected to earth ground via metal shell connectors bonded to a conductive module front panel.

3.Conductive chassis rails connected to earth ground. This provides the path for connecting shields to earth ground.

4.Front panel screws properly tightened.

For minimum RF emissions, it is essential that the conditions above be implemented; failure to do so could compromise the FCC compliance of the equipment containing the modules.

MVME712A/D3

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Contents
MVME712A, MVME712AM MVME712A/D3Restricted Rights Legend Document Title Motorola Publication Number PrefaceRelated Documentation Manual Terminology Page Safety Summary Safety Depends On You This equipment generates, uses, and can radiate radio Page Contents Page List of Figures Collective Reference Features of the MVME712 Family ModulesIntroduction Specifications Features of the LCP2 Adapter BoardCharacteristics SpeciÞcations MVME712 Family SpecificationsCooling Requirements FCC ComplianceGeneral Description Unpacking Instructions MVME712x Module PreparationMVME712-12 Header Locations MVME712x Module Preparation InstallationHardware Preparation LocationsMVME712AFigure 2-3.HeaderLMVME712AMocationsFigure 2-4.Header DSR Line Pull Up Select Headers J8, J9, J13, J14 DCE DTESerial Port Configuration Serial Port 2/Modem Port 2 Select J16, J17Ote Modem Port ConfigurationMVME712B Module Preparation Scsi TerminationMVME712B Connector Locations LCP2 Adapter Connector Locations LCP2 Adapter Board PreparationInstallation Instructions Installing for Use with Internal Scsi Devices Internal Scsi and Serial Port Connections Installing the MVME712-13 and MVME712AM as a Modem Internal Scsi and Modem Connections MVME712B Installation MVME712B External Scsi Connections Hardware Preparation and Installation MVME712 Jumpers Interconnect SignalsLCP2 and MVME712 Connectors FromConnectors J1, J3-J5 Interconnect Signals MVME712x Connector P2 Interconnect Signals LCP2 AdapterConnectors J1, J3-J5 Interconnect Signals MVME712x Pin Signal Signal Name and Description Number MnemonicRTS CTSConnector J2 Interconnect Signals LCP2 Adapter Connector J2 Interconnect Signals LCP2 AdapterPrpe GND Ground PrfaultPrack PrbsyGND Ground RXD1 DTR3TXD1 GND Ground RTS1DTR4 RTS4GND Ground TRXC4 CTS4DCD2 CTS2RTS2 DTR2Connector J2 Interconnect Signals MVME712-13/AM Connector J2 Interconnect Signals MVME712-13, MVME712AMConnector J3 Interconnect Signals LCP2 Adapter Connector Connector J3 Interconnect Signals LCP2 AdapterGND Ground ATN Termpwr Terminator PowerGND Ground DBP GND Ground BSYGND Ground REQ Connector Scsi Interface Interconnect Signals MVME712BScsi Interface Interconnect Signals MVME712B GND Ground Termpwr Terminator Power MAU Connector Ethernet Interconnect Signals MVME712BEthernet Interconnect Signals MVME712B Connector J6 Interconnect Signals MVME712-13/AM Connector J6 Interconnect Signals MVME712-13, MVME712AMConnector J7 Interconnect Signals MVME712-13, MVME712AM 10. Connector J7 Interconnect Signals MVME712-13/AMMDMRXD2 Connector J10 Interconnect Signals MVME712x11. Connector J10 Interconnect Signals MVME712x MDMDCD2Pin Number Signal Signal Name and Description J11 Mnemonic Connector P2 and J11 Interconnect Signals MVME712x12. Connector P2, J11 Interconnect Signals MVME712x Data bit 6 Printer A16 A23 Connector J12 Interconnect Signals MVME712-13, MVME712AM 13. Connector J12 Interconnect Signals MVME712-13/12AMConnector J15 Interconnect Signals MVME712x 14. Connector J15 Interconnect Signals MVME712xModel Parts List Parts Location Drawing Parts Lists and Locations15. MVME712 x Module Parts List Reference Motorola Description Designation Part Number15. MVME712x Module Parts List Modem kit MVME712-13 and MVME712AM Side MVME7121.-3FigureocationL-12 PartsMVME712-13 Parts Location Drawing Primary Side DrawingFigure 3-3. MVME712A Parts LocationPrimary Side 1532 PartsMVME712AMFigure 3-4.Location Drawing Primary Side CR3 CR4 CR5 CR6 CR7 CR8 CR9Support Information MVME712A and MVME712AM Reference Motorola DesignationMVME712B Parts Location Drawing 17. LCP2 Adapter Module Parts List CR1MVME712AM LCP2 Schematic DrawingsModule Board Part Number Pages Support Information Modem Features BeneÞts Modem FeaturesTable A-1. Modem Features Table A-2. Technical Specifications Characteristic SpeciÞcationTechnical Specifications TTL/CMOSTable A-3. Autodialer Characteristics Index MVME712AM IN-7
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