DAQDeviceInputConfiguration Enumeration
- Aktualisiert2023-02-21
- 3 Minute(n) Lesezeit
Specifies the input terminal configuration to apply to the device channels.
Namespace:
NationalInstruments.VeriStand.SystemDefinitionAPIAssembly: NationalInstruments.VeriStand.SystemDefinitionAPI (in NationalInstruments.VeriStand.SystemDefinitionAPI.dll) Version: 2013.0.0.0 (2013.0.0.0)
| Member name | Description |
|---|---|
| Default | The default configuration of the DAQ device, or the configuration you specify in Measurement and Automation Explorer (MAX). |
| Differential | The analog input channels are differential. A differential measurement system has neither of its inputs tied to a fixed reference, such as earth or building ground. A differential measurement system is similar to a floating signal source in that the measurement is made with respect to a floating ground that is different from the measurement system ground. Hand-held, battery-powered instruments and DAQ devices with instrumentation amplifiers are examples of differential measurement systems. This mode measures potential between two inputs and therefore reduces channel count by 2. |
| NRSE | The analog input channels are non-referenced single-ended (NRSE). In a NRSE measurements system, all measurements are still made with respect to a single-node analog input, AISENSE, but the potential at this node can vary with respect to the measurement system ground. |
| Pseudodifferential | The analog input channels are pseudodifferential. A pseudodifferential measurement system combines some characteristics of a differential input channel and a referenced single-ended (RSE) input channel. Like a differential input channel, a pseudodifferential measurement system exposes both the positive and negative sides of the channel. You connect the positive and negative inputs to the respective outputs of the unit under test. The negative input is tied to system ground through a relatively small impedance. The impedance between the negative input and ground may include both resistive and capacitive components. The positive and negative sides of the input channel are separated by a larger impedance. |
| RSE | The analog input channels are reference single-ended (RSE). A referenced single-ended (RSE) measurement system measures voltage with respect to the ground, which is directly connected to the measurement system ground. |