National Instruments SCC-LP02 用户手册

© National Instruments Corporation

The signal source can be floating or ground-referenced. The SCC-LPXX 
input circuitry includes high-impedance bias resistors typically required for 
floating sources. Therefore, floating signal sources do not require external 
bias resistors connected to ground.

For floating signal sources in high-noise environments, connect the negative 

terminal of the signal source to the AI GND terminal on the SC-2345 screw-terminal block 
to reduce common-mode noise.

Figure 1.  SCC-LPXX Signal Connections

For information about configuring the SCC-LPXX module using 
NI-DAQmx, refer to the SCC Quick Start Guide.

AI (X )

AI (X+8)

SCC-LP

+
–

E Series DAQ Device

+
–

+
–

+
–

Signal source may be floating or ground-referenced.

10 M

Ω 

10 M

Ω 

AI SENSE

1

3

4

2

AI GND

Fourth-Order

Butterworth 

Lowpass

Filter

1 k

Ω 

1 k

Ω 

1 k

Ω 

1 k

Ω 

Fourth-Order

Butterworth 

Lowpass

Filter

Signal 

Sources