NI 5160/5162 Input Impedance

You can set the NI 5160/5162 analog input impedance to either 50 Ω or 1 MΩ. The 1 MΩ path is required in applications that require minimal loading or use of a passive oscilloscope probe.

Protection

The 50 Ω inputs of the NI 5160/5162 are protected by a voltage sense circuit. If an overvoltage event is large and sudden enough, the protection circuits might not have enough time to react before permanent damage occurs. It is important that you observe the specified maximum signal input levels, especially when the inputs are set for 50 Ω.