Sample range begins on first point of signal
Negative range set between signal and
off time
Example of Incorrect Use
Waveform: 1022 points
Marker range: 110–1022
Marker polarity: Negative
This figure shows that a negative polarity marker goes
low during the marker on points; the marker signal goes
high during the off points. The ALC samples the
waveform during the off marker points.
Marker On
Marker On
Sampling both on and off time sets the modulator
circuitry incorrectly for higher signal levels. Note the
increased amplitude at the beginning of the pulse.
Marker
Off
Marker On
Marker
Marker
Off
On