Multi-Tech Systems 7500 - Manual (Page 25)

ION 7500 / ION 7600 User’s Guide Display Screen Types
Chapter 2 - Using The Front Panel Page 25
Trend Bar Graph Displays
Bar graph displays can show up to four real-time (numeric) parameters along with
their upper and lower extremes.
Each bar graph automatically scales its output based on the magnitude of its
extremes. The real-time value of each bar graph is displayed to the right of the
graph. Note that scaling is applied separately to each bar graph in the display. Do
not compare the magnitudes of two values based on the size of their bars.
In the trend bar graph shown on the left, the present value of Vll ab is 271.93 V. The
bar graph also indicates that it has gone as low as 271.40 V and as high as 272.47 V.
Trend Displays
The Trend Display screen graphs the historical data of up to four different
parameters simultaneously. A movable cursor that consists of the intersection of a
vertical line and a horizontal line displays the value and timestamp of any plotted
data within a parameter. The cursor displays the values of one parameter at one
time only. With the Up and Down navigation keys, the cursor can move from one
parameter to another.
In addition, a Trend Display log screen displays data logs for any graphed
parameter – up to 3360 logs for each parameter. That is equivalent to 35 days worth
of 15 minute data. The graph is updated when a new set of values is recorded. The
highest supported update speed is once per second.
The ION 7500 front panel displays three preconfigured trending screens: V-Trend
(voltage), I-Trend (current), and P-Trend (power). The ION 7600 must be
configured using Designer in order to provide Trend Display. Contact Technical
Services if you require your ION 7600 to be configured for Trend Display.