NI USB-621 Series User Manual Brandname: National Instruments Category: I/O Systems Total Pages: 185 Table of contents ImportantInformation3Compliance4Contents5AboutThisManual12RelatedDocumentation13GettingStarted18DeviceSpecifications19UsbCableStrainRelief20MountingTheUsb-62121DaqSystemOverview24SignalConditioning26CablesandAccessories275VPower31PwractLedIndicator33AnalogInput34AnalogInputRange35FieldWiringConsiderations43AnalogInputTimingSignals44Usb-621062116212Devices56
NI USB-621 Series User Manual Brandname: National Instruments Category: I/O Systems Total Pages: 178 Table of contents ImportantInformation3Contents5AboutThisManual13RelatedDocumentation14GettingStarted17InstallingNi-Daqmx18InstallingTheHardware19DaqSystemOverview20SignalConditioning22ConnectorInformation245VPower25AnalogInput27AnalogInputRange28FieldWiringConsiderations37ConnectingAiSignalsOnThe51ConnectingAiSignalsOnThe64AnalogOutput68AoRange69