
DUT Board Design for Mixed-Signal Tests 5 DUT Board Performance Considerations
System Reference, January 2001
133
Consider the following measures:
• Change the position of components or cables. Separate
input and output lines physically.
• Use coaxial cables to protect sensitive signals.
• Ensure that all ground connections are as short as
possible.
• Increase the digital and analog ground planes.
• Add bypass capacitors.
• Use guard lines to shield voltage force/sense lines.
• Consider adding relays as shown below:
Figure 56 Troubleshooting DUT Board Problems
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