Measurement-computing USB-7202 Manual de usuario descargar pdf (Pagina 13)

USB-7202 User's Guide Functional Details

Screw terminals

Screw terminal connections in shown in Figure 4.

Figure 4. Screw terminal pinout

Use 16 AWG to 30 AWG when making screw terminal connections.

Signal connections

Analog input

You can connect up to eight analog input connections to screw terminals CH0 IN through CH7 IN. Connect

unused analog input terminals to ground terminals during operation. All AI channels are configured for

single-ended input mode. The input voltage ranges are ±10 V, ±5 V, ±2.0 V, ±1.0 V.

Each analog signal is referenced to signal ground (AGND), and requires two wires:

 The wire carrying the signal to be measured connects to CH# IN.

 The second wire connects to AGND.

Digital I/O

You can connect up to eight digital I/O lines to screw terminals DIO0 to DIO7. Each digital bit is configurable

as either input or output. When configured for input, the digital I/O terminals can be used to detect the state of

any TTL-level input.

Pull-up/down configuration

The digital pins are configurable via jumper

JP1 for pull-up to USB +5 V (HI) or pull-down to ground (LO).

On power up and reset the DIO pins are driven high.

Figure 5. Jumper JP1 configuration

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 25 26

Sin comentarios

Measurement-computing USB-7202 Manual de usuario Pagina 13