Why Doesn't the DL1540 Recognize the Isolated Input Unit?

To use the isolated input unit, the firmware version of the DL1540 must be 1.10 or higher. Please check the version number. If the version number is lower than 1.10, the firmware must be upgraded.

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Mixed Signal Oscilloscopes

A mixed signal oscilloscope is an instrument enabling the simultaneous, time correlated observations and analysis of analog with digital (logic) signals, to establish causal relationships between the various areas of a device's electronics. They are purpose-built tools for troubleshooting electrical anomalies, measuring parametric values, and monitoring cause and effect relationships between signals.


Capture, analyze, and troubleshoot electrical or real-world physical signals. Oscilloscopes observe the change of electrical signals over time, continuously graphed on a display as voltage or amplitude vs. time.