Line Graph - Ahlborn ALMEMO 710 Operating Instructions Manual

11.3 Line graph

Via the menu ´Line graph´ and selection box ´Channels´ any five channels from
all those available can be selected for graphical display . Before starting record-
ing either via another menu or automatically as a result of a starting time or limit
value action the channel must have been selected and settings must have been
made.
The channels, their respective designations, and the units for the axes can be
selected and if necessary modified by simply touching on them. Or, alterna-
tively, the ´Settings´ button gives access to the page ´Line graph - scales and
channels´. Here, similarly, via ´Select channels´ the units for the Y axes left and
right and the colors for the channels can be defined.
On the next page ´Axis scaling - left, right, and time axis´ the scaling mode
for the two measured value axes can be set.
´Automatic´ depending on the maximum and minimum of the measured value
´Fixed range´ with defined maximum and minimum
´Fixed scaling´ with a defined incremental step for scaling
For the time axis the following selections can be made :
The ´Display cycle ´ is the write time from pixel to pixel.
The scaling mode with time axis offers the following possibilities:
1. ´Total measuring operation´
If writing is no longer possible because the graphic window is full, all values
are compressed by 50% (maximum and minimum retained intact) and writ-
ing can continue albeit at a reduced rate (display cycle).
2. ´Fixed range´ with adjustable time frame
If writing is no longer possible because the graphic window is full, all values
are shifted by 50% to the left out of the window and writing can continue at
an unaltered rate.
On the third page ´Display options´ the grid can be activated on a horizontal /
vertical basis and the limit value lines of a selectable curve can be added.
Measured value acquisition

As soon as a new measuring operation starts any existing line
graph in the graphics menu is deleted.
The measured values of the selected channels are then written per display cycle
pixel by pixel from left to right as a line graph with 540 x 265 pixels. Maximum
and minimum values within the display cycle are recorded and shown as vertical
lines. The curve is updated continuously throughout the active measuring oper-
ation - even if the user leaves the menu.
The device can save altogether up to 120 graphic windows, after which old data
is overwritten (ring memory). On completion of a measuring operation the whole
graphics buffer can be displayed in both scaling modes with different time axes;
(for quick access use the tabs ´Settings´ and ´Line graph´).
ALMEMO ® 710
Line graph
37