ReadString statement

How readstring instruction interrupt code vb until the scan is done? It works fine I just want to understand it better. I was trying to find a way to get the status of the scan before I discovered I didn't need to do anything. I was quite surprised. So, how does it work?

Keithley2430.Write(":READ?")
        readString = Keithley2430.ReadString() 'InsertCommonEscapeSequences(Keithley2430.ReadString())

As I said, a reading will wait for the EOI or timeout.

Tags: NI Hardware

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