The bottom section of the display shows the unique
provides a record of the surface water temperature changes in graphical
form. This feature is particularly useful while sports fishing to locate the
subtle temperature breaks
which can mean the presence
of
the
TEMP Graph has the following five main parts:
1.
Graph scale
2.
Graph line
3. Event
line
4. Temperature Alarm status box
5.
cursor
TEMP GRAPH
33.6.6.1
Centering the
GRAPH
The Temperature Graph scale has a fixed scale
of
Pressing
the (up) key will shift the temperature line upward onto the center of
the graph scale. The
(down) moves the temperature line down to the
graph scale. Use these keys to put your surface water temperature at the
graph mid-point.
The graph represents approximately the last hour of plotted temperature
points. A line below the graph is used to show the
Events
entered during the time of the graph. If you move the
(left) direction
key, a vertical cursor appears on the Temp Graph. The cursor can be
superimposed over
the
Position
data of the Event can then be recalled
by
pressing
Setting
Alarms
The
has operator programmable
alarms that you can set to
advise you when the specified surface water temperature limits have been
reached. The types of
alarms available are:
UPPER LIMIT
,
LOWER
L I M I T
, and
RATE OF CHANGE
.
Quick access to set, change, or cancel these Temperature alarms is gained
by
pressing
key. When the
menu appears, press the
TEMP
and the
SET TEMP ALARMS menu will appear, as
shown.
OPERATION 70
