© National Instruments Corporation 9 USB-9201/9221 User Guide and Specifications
Assembling the High Voltage Screw Terminal Backshell
The high voltage screw terminal backshell must be installed when using
hazardous voltages (>42.4 Vpk, 60 VDC). Refer to Figure8 while
completing the following steps:
1. Connect the leads to the screw terminal and secure with the strain
relief.
2. Finish by snapping the backshell around the connector.
Figure 8. High Voltage Screw Terminal Backshell
Connecting Single-Ended Voltage Signals to the USB-9201/9221
You can connect single-ended voltage signals to the USB-9201/9221.
Connect the positive lead of the voltage signal to AI. Connect the ground
signal to COM.
Figure 9. Connecting a Single-Ended Voltage Signal to the USB-9201/9221
1 Strain Relief
1
COM
AI
Voltage
Source USB-9201/9221
+
–