Use the DAQmx Physical Channel properties to query information about physical channels. Use the DAQmx Channel properties to configure virtual channels.

Active Physical Channels
Specifies the physical channel from which to retrieve properties.
Analog Input:Input Configuration:Input Sources
Indicates the list of input sources supported by the channel. Channels may support using the signal from the I/O connector or one of several calibration signals.
Analog Input:Input Configuration:Terminal Configurations
Indicates the list of terminal configurations supported by the channel.
Analog Input:Measurement Types
Indicates the measurement types supported by the channel.
Analog Input:Signal Conditioning:Sensor Power:Power Control:Enable
Specifies whether to turn on the sensor's power supply.
Analog Input:Signal Conditioning:Sensor Power:Power Control:Type
Specifies the type of power supplied to the sensor.
Analog Input:Signal Conditioning:Sensor Power:Power Control:Voltage
Specifies the voltage level for the sensor's power supply.
Analog Input:Signal Conditioning:Sensor Power:Status:Open Channel
Indicates whether there is an open channel or undercurrent condition on the channel.
Analog Input:Signal Conditioning:Sensor Power:Status:Overcurrent
Indicates whether there is an overcurrent condition on the channel.
Analog Input:Signal Conditioning:Sensor Power:Types
Indicates the types of power supplied to the sensor supported by this channel.
Analog Input:Signal Conditioning:Sensor Power:Voltage Range Values
Indicates pairs of sensor power voltage ranges supported by this channel. Each pair consists of the low value followed by the high value.
Analog Output:Advanced:Manual Control:Amplitude
Indicates the current value of the front panel amplitude control for the physical channel in volts.
Analog Output:Advanced:Manual Control:Enable
Specifies if you can control the physical channel externally via a manual control located on the device. You cannot simultaneously control a channel manually and with NI-DAQmx.
Analog Output:Advanced:Manual Control:Frequency
Indicates the current value of the front panel frequency control for the physical channel in hertz.
Analog Output:Advanced:Manual Control:Short Detected
Indicates whether the physical channel is currently disabled due to a short detected on the channel.
Analog Output:Advanced:Power Amplifier:Calibration:Gain
Indicates the calibrated gain of the channel.
Analog Output:Advanced:Power Amplifier:Calibration:Offset
Indicates the calibrated offset of the channel in volts.
Analog Output:Advanced:Power Amplifier:Channel Enable
Specifies whether to enable or disable a channel for amplification. This property can also be used to check if a channel is enabled.
Analog Output:Advanced:Power Amplifier:Overcurrent
Indicates if the channel detected an overcurrent condition .
Analog Output:Advanced:Power Amplifier:Scaling Coefficients
Indicates the coefficients of a polynomial equation used to scale from pre-amplified values.
Analog Output:Output Configuration:Terminal Configurations
Indicates the list of terminal configurations supported by the channel.
Analog Output:Output Types
Indicates the output types supported by the channel.
Analog Output:Power Up Output Types
Indicates the power up output types supported by the channel.
Counter Input:Measurement Types
Indicates the measurement types supported by the channel.
Counter Output:Output Types
Indicates the output types supported by the channel.
Digital Input:Port Width
Indicates in bits the width of digital input port.
Digital Input:Timing:Change Detection Supported
Indicates if the change detection timing type is supported for the digital input physical channel.
Digital Input:Timing:Sample Clock Supported
Indicates if the sample clock timing type is supported for the digital input physical channel.
Digital Input:Timing:Sample Modes
Indicates the sample modes supported by devices that support sample clocked digital input.
Digital Output:Port Width
Indicates in bits the width of digital output port.
Digital Output:Timing:Sample Clock Supported
Indicates if the sample clock timing type is supported for the digital output physical channel.
Digital Output:Timing:Sample Modes
Indicates the sample modes supported by devices that support sample clocked digital output.
Digital:Port Logic Family
Specifies the digital port logic family to use for acquisition and generation. A logic family corresponds to voltage thresholds that are compatible with a group of voltage standards. Refer to the device documentation for information on the logic high and logic low voltages for these logic families.
TEDS:BitStream
Indicates the TEDS binary bitstream without checksums.
TEDS:ManufacturerID
Indicates the manufacturer ID of the sensor.
TEDS:Model Number
Indicates the model number of the sensor.
TEDS:Serial Number
Indicates the serial number of the sensor.
TEDS:TemplateIDs
Indicates the IDs of the templates in the bitstream in TEDS.BitStream .
TEDS:Version Letter
Indicates the version letter of the sensor.
TEDS:Version Number
Indicates the version number of the sensor.

NI-DAQmx VI and Function Reference