:CHANnel:PROBe:CORRection:SIMPedance

:CHANnel Probe Commands

Command Syntax

:CHANnelN:PROBe:CORRection:SIMPedance <source_impedance>

Where N identifies a specific channel in the form "<connection1-8>_<ch1-8>". With connection 1, the connection number part (that is, "1_") is optional, and you can simply use the channel number "<ch1-8>". For example, connection 4 channel 2 is CHANnel4_2.

<source_impedance> is a double.

Query Syntax

:CHANnelN:PROBe:CORRection:SIMPedance?

Description

When Source Estimate: Vout/Vincident = Vout/Vsrc is selected (see :CHANnel:PROBe:CORRection:RESPonse), this command selects the VOut/VSrc estimate of probed system response (which corrects the probe as "what would be there if the probe were not present"), and specifies a constant (Zo/2) value (in ohms) as the system source impedance.

One drawback of defining the probe's response in this manner is that if the probe's loading causes your circuit to lose some timing or amplitude margin, you probably want to know that when you make a measurement. VOut/VSource compensation will hide these effects from you. However, this method can be effective if probing at the transmitter.