National Instruments NI 6711 User Manual

Also see for DAQCard-6715: User manual User manual

Contents

National Instruments NI 6711 User Manual Manual pdf 21 page image

Chapter 1 DAQ System OverviewAnalog Output Series User Manual 1-6 ni.comCustom CablingFollow these guidelines if you want to develop your own cable.• Route the analog lines separately from the digital lines.• When using a cable shield, use separate shields for the analog anddigital halves of the cable. Failure to do so results in noise couplinginto the analog signals from transient digital signals.Table 1-3 shows the recommended connectors to use with the I/Oconnector on your AO device.Note When the NI DAQCard-6715 is in the upper PCMCIA slot, you can maintain accessto the adjacent slot by using an inverted VHDCI connector.For more information on the connectors used for DAQ devices, refer to theKnowledgeBase document, Specifications and Manufacturers for BoardMating Connectors. To access this document, go to ni.com/info andenter the info code rdsmbm.Field Wiring ConsiderationsThe following recommendations apply for all signal connections to theAO Series device.• Separate the signal lines of the AO Series device from high-current orhigh-voltage lines. These lines can induce currents in or voltages onthe signal lines of the AO Series device if they run in close parallelpaths. To reduce the magnetic coupling between lines, separate themby a reasonable distance if they run in parallel, or run the lines at rightangles to each other.• Do not run signal lines through conduits that also contain power lines.Table 1-3. Recommended AO ConnectorsDevice ConnectorNI 6711/6713 Honda 68-position, solder cup, female connectorHonda backshellNI DAQCard-6715 AMP 68-position, VHDCI AMP backshellNI 6722/6723 AMP 68-position, VHDCI AMP backshellNI 6731/6733 Honda 68-position, solder cup, female connectorHonda backshell