NI 654x Termination Summary
The following table provides a high-level summary of the termination considerations for your NI 654x. Click a title for more information about that type of termination.
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| Source | Transmission Line | Termination (Load) |
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| Zs = 50 Ω | Zo = 50 Ω | Zt = Open (Tristate) or Unterminated Works for all except most demanding applications |
| Zt = 50–300 Ω Recommended for better signal integrity. |
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| Termination | Transmission Line | Source |
| Zt = 10 kΩ | 50 Ω | Zs = 50 Ω This configuration works well for most applications. |
| Zs < 50 Ω This configuration is not recommended because of the mismatch on both ends. The recommended setup is to increase Zs to 50 Ω by adding series resistance at the source. |
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| Zs > 50 Ω This configuration is not recommended because of the mismatch on both ends.
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