Table of ContentsNational Instruments CorporationviiDAQCard E Series User ManualGPCTR0_UP_DOWN Signal ..........................................................4-39GPCTR1_SOURCE Signal ..............................................................4-39GPCTR1_GATE Signal ...................................................................4-40GPCTR1_OUT Signal ......................................................................4-41GPCTR1_UP_DOWN Signal ..........................................................4-42FREQ_OUT Signal ..........................................................................4-43Field Wiring Considerations .........................................................................................4-44Chapter 5CalibrationLoading Calibration Constants ......................................................................................5-1Self-Calibration .............................................................................................................5-2External Calibration ......................................................................................................5-2Other Considerations .....................................................................................................5-3Appendix ASpecificationsDAQCard-AI-16E-4 ......................................................................................................A-1DAQCard-AI-16XE-50 .................................................................................................A-8Appendix BOptional Cable Connector DescriptionsAppendix CPC Card Questions and AnswersAppendix DCommon QuestionsAppendix EPower-Management Modes