The AP-1M Adapter provides a high impedance (1 Mohm) interface for use on the WaveMaster family of products (DSO, DDA, SDA). The Adapter presents a high impedance path (instead of the 50 ohm WaveMaster input impedance) and allows users to measure higher voltage signals while also expanding the full-scale range capability of measurement. The specifications shown pertain only to the AP-1M Adapter itself. Users can achieve even higher full-scale ranges and offset ranges with the overall signal measurement chain (WaveMaster family product AP-1M Adapter Probe), depending on the probe used. The AP-1M Adapter is supplied with a PP005A passive probe, but it is suitable for use with other probe types, including current probes, which require a 1 Mohm path. The AP-1M also serves as a ProLink-to-ProBus adapter.