N5161A/62A/81A/82A/83A MXG Signal Generators User's Guide

Basic Digital Operation (Option 651/652/654)Using Waveform MarkersExample of Incorrect UseWaveform: 1022 pointsMarker range: 110–1022Marker polarity: NegativeThis figure shows that a negative polarity marker goes low duringthe marker on points; the marker signal goes high during the offpoints. The ALC samples the waveform during the off markerpoints.Marker OnMarkerOffMarker OnSample range begins on first point of signalSampling both on and off time sets the modulator circuitryincorrectly for higher signal levels. Note the increased amplitudeat the beginning of the pulse.Marker OnMarkerOffMarkerOnNegative range set between signal andoff timeAgilent N5161A/62A/81A/82A/83A MXG Signal Generators User’s Guide 159