Analog Input Measurements下载PDF选定部分选定部分和子部分整个手册更新时间2025-08-09阅读时长1分钟USB-6421用户手册 Learn about making analog input measurements with the USB-6421. Analog Input RangeYou can individually program the input range of each AI channel on your USB-6421.Working Voltage RangeThe NI programmable gain instrumentation amplifier (NI-PGIA) operates normally by amplifying signals of interest while rejecting common-mode signals under certain conditions.Analog Input Terminal ConfigurationsThe USB-6421 supports three analog input terminal configurations: differential mode, referenced single-ended mode, and non-referenced single-ended mode.Multi-channel Scanning ConsiderationsThe USB-6421 can scan multiple channels at high rates and digitize the signals accurately. Analog Input Data Acquisition MethodsWhen performing analog input measurements, you either can perform software-timed or hardware-timed acquisitions.Analog Input Signal ConnectionsYou can connect floating signal sources and ground-referenced signal sources to the USB-6421.Analog Input Timing EngineThe USB-6421 has a flexible timing engine. Analog Input Timing SignalsThe USB-6421 features eight analog input timing signals.Analog TriggeringYou can configure the analog trigger circuitry of the USB-6421 to monitor any analog input channel from which you acquire data. Onboard Temperature SensingYou can connect a twisted pair of thermocouples to any analog input channel in differential, NRSE, or RSE mode to measure temperature.
Learn about making analog input measurements with the USB-6421. Analog Input RangeYou can individually program the input range of each AI channel on your USB-6421.Working Voltage RangeThe NI programmable gain instrumentation amplifier (NI-PGIA) operates normally by amplifying signals of interest while rejecting common-mode signals under certain conditions.Analog Input Terminal ConfigurationsThe USB-6421 supports three analog input terminal configurations: differential mode, referenced single-ended mode, and non-referenced single-ended mode.Multi-channel Scanning ConsiderationsThe USB-6421 can scan multiple channels at high rates and digitize the signals accurately. Analog Input Data Acquisition MethodsWhen performing analog input measurements, you either can perform software-timed or hardware-timed acquisitions.Analog Input Signal ConnectionsYou can connect floating signal sources and ground-referenced signal sources to the USB-6421.Analog Input Timing EngineThe USB-6421 has a flexible timing engine. Analog Input Timing SignalsThe USB-6421 features eight analog input timing signals.Analog TriggeringYou can configure the analog trigger circuitry of the USB-6421 to monitor any analog input channel from which you acquire data. Onboard Temperature SensingYou can connect a twisted pair of thermocouples to any analog input channel in differential, NRSE, or RSE mode to measure temperature.
Learn about making analog input measurements with the USB-6421. Analog Input RangeYou can individually program the input range of each AI channel on your USB-6421.Working Voltage RangeThe NI programmable gain instrumentation amplifier (NI-PGIA) operates normally by amplifying signals of interest while rejecting common-mode signals under certain conditions.Analog Input Terminal ConfigurationsThe USB-6421 supports three analog input terminal configurations: differential mode, referenced single-ended mode, and non-referenced single-ended mode.Multi-channel Scanning ConsiderationsThe USB-6421 can scan multiple channels at high rates and digitize the signals accurately. Analog Input Data Acquisition MethodsWhen performing analog input measurements, you either can perform software-timed or hardware-timed acquisitions.Analog Input Signal ConnectionsYou can connect floating signal sources and ground-referenced signal sources to the USB-6421.Analog Input Timing EngineThe USB-6421 has a flexible timing engine. Analog Input Timing SignalsThe USB-6421 features eight analog input timing signals.Analog TriggeringYou can configure the analog trigger circuitry of the USB-6421 to monitor any analog input channel from which you acquire data. Onboard Temperature SensingYou can connect a twisted pair of thermocouples to any analog input channel in differential, NRSE, or RSE mode to measure temperature.