Question
The output impedance of the driver is 50 ohm.
Does the output impedance affect the current/ voltage measurement in I/O channel?
Answer
In the case of the current/ voltage measurement by I/O channel, the driver/comparator path is separated from the I/O channel and DC Parametric measurement is connected to the I/O channel.
For that reason, the output impedance of the driver does not affect the measurement.