Panametrics DigitalFlow GF868 - Graphical Format

2.5.3 Graphical format
After choosing PLOT at the FORMAT prompt, the
programming sequence continues as follows:
6. Enter a maximum value for the Y-axis (vertical) scale
that is larger than the maximum expected reading.
Press [ENT].
7. At the Y range prompt, press [F1] to graph only positive
Y values or press [F2] to graph both positive and negative
Y values.
After the Y RANGE is entered, the model GF868 automatically
displays the chosen log file records in the specified
graphical format.
1.23 Ft/s 10:16

V
E
L
ST: 08 MAR 09:50
<CURS CURS> START END
Use the [], [] and [F1]-
[F4] keys to select the
desired option. The options
are listed in table 12.
At any given time, the 120 records stored in one page of the
log file will be graphed on the display screen. The cursor,
which is shown as a vertical line that extends the full height
of the graph window, can be used to highlight any one of
these records.
IMPORTANT:
Only the first of the three logged parameters is displayed
in the graphical format of the LOG submenu.
Therefore, when creating a log file, be sure to specify the
parameter to be graphed at the 1st value logged prompt.
See chapter 3, logging data, for details on creating a log file.
In the typical graphical display shown, the first logged
parameter (VEL) is shown to the left of the y-axis and there
is a message line below the graph that initially indicates
the starting date and time of the current page. Notice that
most of the locator bar has been replaced by a status line in
standard video that shows the value, units and time of the
record at the current cursor location. However, there is still
an inverse video pointer at the far right of this line to indicate
that additional option bar choices are available.
NOTE:
The date in the message line includes only the day and
the month (not the year). The times in the status line and
the message line include only hours and minutes (not
seconds).
Because the times displayed in the LOG graph are in whole
minutes only, movement of the cursor may not result in a
visible change in the posted times. For example, if a TIME
INCREMENT of 30 seconds has been programmed, two
presses of either cursor movement key will be required to
change the displayed time by one minute.
Table 12: Graphical log display options
Option bar choice Description
[F1] = <CURS
Move the cursor one record to the
left and display the value and time
of that record in the status line: (i.e.
6.85 Ft/s 10:38)
[F2] = CURS>
Move the cursor one record to the
right and display the value and time
of that record in the status line: (i.e.
5.31 Ft/s 10:38)
[F3] = <PAGE Display the previous page of records
[F4] = PAGE> Display the next page of records
[] + [F1] = START
Move the cursor to the first record
on the current page and post the
date and time of that record in the
message line: (i.e. ST: 08 MAR 10:38)
[] + [F2] = END
Move the cursor to the last record
on the current page and post the
date and time of that record in the
message line: (i.e. END 08 MAR 11:14)
[] + [F3] = YMAX
Display the programmed maximum
Y value in the message line: (i.e.
YMAX 25.0 Ft/s)
[] + [F4] = T INC
Display the time increment value,
as set when the log file was created,
in the message line: (i.e. T INC 30
seconds)
[] + [F1] = EXIT
Leave the graphical LOG display and
return the display to the previous
data format. (The [EXIT] key on
the keypad will also perform this
function.)
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