User's Manual

Chapter 2 Installing and Configuring the DAQCard-1200

Considerations for using DIFF input mode are discussed in Chapter 3,

Connecting the Signals. Notice that the signal return path is through the

negative terminal of the instrumentation amplifier and through channel 1,

3, 5, or 7 depending on which channel pair you select.

RSE Input Mode (Eight Channels, Default Setting)

RSE input mode means that all input signals are referenced to a common

ground point that is also tied to the DAQCard-1200 AI ground. The RSE

mode is useful for measuring floating signal sources. Refer to the Types of

Signal Sources section of Chapter 3, Connecting the Signals,formore

information. With the RSE configuration, the DAQCard-1200 can monitor

eight different analog input channels.

Considerations for using the RSE mode are discussed in Chapter 3,

Connecting the Signals. Notice that in RSE mode, the return path of the

signal is through analog ground at the connector through the

AISENSE/AIGND pin.

NRSE Input Mode (Eight Channels)

NRSE input mode means that all signals are referenced to the same

common-mode voltage, which is allowed to float with respect to the analog

ground of the DAQCard-1200. This common mode voltage is subsequently

subtracted out by the instrumentation amplifier. NRSE input mode is useful

when measuring ground-referenced signal sources.

Considerations for using the NRSE configuration are discussed in

Chapter 3, Connecting the Signals. Notice that in this mode, the return path

of the signal is through the negative terminal of the amplifier, available at

the connector through the pin AISENSE/AIGND.

Configuring Analog Output

You can set the analog output on the DAQCard-1200 to either bipolar or

unipolar configurations.

Parameter Configuration

Analog Output CH0 Polarity Bipolar—±5 V (default setting)

Unipolar—0–10 V

Analog Output CH1 Polarity Bipolar—±5 V (default setting)

Unipolar—0–10 V