Measurement-computing USB-3101 Instrukcja Użytkownika Pobierz pdf (Strona 14)

USB-3101 User's Guide Functional Details

Screw terminal banks

The USB-3101 has two rows of screw terminals—one row on the top edge of the housing, and one row on the

bottom edge. Each row has 28 connections. Use 16 AWG to 30 AWG wire gauge when making screw terminal

connections. Pin numbers are identified in Figure 4.

Pin 56Pin 29

Pin 28Pin 1

Figure 4. USB-3101 screw terminal pin numbering

Screw terminal – pins 1-28

The screw terminals on the bottom edge of the USB-3101 (pins 1 to 28) provide the following connections:

 Two analog voltage output connections (VOUT0, VOUT2)

 Four analog ground connections (AGND)

 Eight digital I/O connections (DIO0 to DIO7)

Screw terminal – pins 29-56

The screw terminals on the top edge of the USB-3101 (pins 29 to 56) provide the following connections:

 Two analog voltage output connections (VOUT1, VOUT3)

 Four analog ground connections (AGND)

 One SYNC terminal for external clocking and multi-unit synchronization (SYNCLD)

 Three digital ground connections (DGND)

 One external event counter connection (CTR)

 One digital I/O pull-down resistor connection (DIO CTL)

 One voltage output power connection (+5 V)

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 23 24

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Measurement-computing USB-3101 Instrukcja Użytkownika Strona 14