Affects: all trace amplitude graphs, and raw waveform display
For graphs of trace amplitude, this parameter selects the trace where the measurements will be taken. The "Trace amplitude point" and "Trace amplitude ref" parameters then select the points in each frame where this trace will be measured.
In the case of "trace amplitude vs trace amplitude" graphs, this parameter selects the trace represented on the X-axis.
For the "Raw waveform display", this parameter selects the trace which will be displayed if the "Mark frame positions on W.F." option is enabled. The top quarter of the display will be used to display sweeps from this trace. The sweeps are displayed vertically, and the first point of each sweep is lined up with the time (on the waveforms below) at which the frame containing the sweep was triggered. If the trace selected by this parameter doesn't exist, the frame positions are indicated, but no sweeps are shown.
|Key sequence||Parameter||Initial Value|
|<Esc>SLTN||Amplitude trace #||0|