Agilent Technologies 89410A Operator's Manual page 79

You can select a trace by number or by its z-axis value (in seconds).
Trace number 1 is the first, or oldest trace in the waterfall buffer. To
select a trace by its z-axis value, press [trace] followed by the z-axis value.
Hint
To display the current z-axis value in the [trace] softkey, press [trace] [s] . To
display the current trace number, press [trace] [enter].
If the marker is on, the analyzer displays marker information for the
selected trace. The z-axis marker value (see below) is the elapsed time
from when you pressed [Meas Restart] to when the trace was created.
Pausing a measurement does not reset the z-axis clock.
resume a measurement, the z-axis value of the next trace is still referenced
to the last time you pressed [Meas Restart].
When you select a trace in a
waterfall display, other grids
that have identical
measurement data, such as
this one, show the selected
trace. If the measurement
data were different, this
grid would always show the
most recent trace acquired.
Using Trace Select In a Waterfall Display
Using Waterfall and Spectrogram Displays (Opt. AYB)
Marker values for the selected trace:
Z-axis value, X-axis value, and Y-axis value.
If you pause and
7 - 7