NI PXI/PCI-5411/5431
ARB/VIDEO OUT Connector
The ARB/VIDEO OUT connector provides the waveform output. The maximum output levels on this connector depend on the type of load termination. If the output of the NI PXI/PCI-5411/5431 terminates into a 50 Ω load, the output levels are ±5 V, as shown in the following figure.
If the output of the NI PXI/PCI-5431 terminates into a high-impedance load (HiZ), the output levels are ±10 V. If the output terminates into any other load, the levels are as follows:
Vout = ± [ RL / ( RL + RO ) ] × 10 V
| where | |
| Vout is the maximum output voltage level | |
| RL is the load impedance in ohms | |
| RO is the output impedance on the NI PXI/PCI-5411/5431 | |
By default, RO = 50 Ω, but you can use software to set it to 75 Ω.
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Note The voltage output levels are set in the software based on a 50 Ω load termination. If you are using the NI PXI/PCI-5431, you should use software to select RO = 75 Ω for video generation. |
For more information, refer to waveform generation and analog output operation. For specifications on the waveform output signal, refer to the NI 5411/5431 Specifications.
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Caution Do not set the output voltage level for the NI PXI/PCI-5431 to more than ±1 V into 75 Ω, because doing so may damage the video display module or the DUT. Always check the output levels before connecting a DUT to the NI PXI/PCI-5431. National Instruments is not responsible for any damage caused to the DUT. |