The Forward Sweep measurement mode provides signal levels of all frequency
points which are displayed on a trace view graph.
SUBTITLE BAR ABOVE GRAPH
The reference filename, test point compensation icon/value, and the tilt
compensation value appear on the subtitle bar above the graph. NOTE: If
there is not a current reference file, then the entry reads "NONE".
When a sweep limit value is entered a pass/fail indicator also appears
on the far left side of the subtile bar above the graph.
TRACE VIEW AREA
As multiple sweeps occur, the trace will change only if new sweep levels
are different from the levels of the previous trace. If Sweep Limit is
turned ON, a pair of horizontal markers is displayed on the screen to
indicate the limit boundaries based on the limit value entered. These
appear only when sweep limit value is ON within Sweep Settings in the
DSAM Configuration mode.
Error dialog pops up automatically if the sweep telemetry level is too
low.
SUBTITLE BAR BELOW GRAPH
This area consists of the start and stop frequency (as provided by the
sweep plan transmitted from the headend transceiver) and the forward sweep
telemetry level. The forward sweep telemetry level can be converted to
dBmV, dBm etc from the configuration settings of the DSAM. If zoom is
active, a zoom icon is also displayed.
MARKER STATUS AREA
The Forward Sweep measurement mode also contains an area referred to as
the Marker Status area (below lower subtitle bar). This area consists
of the marker name (A or B), marker frequency (in MHz), and measured signal
level for the frequencies which the markers are on. The black square around
the letter A or B below the trace graph shows the active marker. The delta
value (in dB) between the markers is also displayed. Next to the marker
status the sweep maximum-minimum dB level is displayed.