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:

V_out = ± [ R_L / ( R_L + R_O ) ] × 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, R_O = 50 Ω, but you can use software to set it to 75 Ω.

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.

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.