JUMO 706030 LOGOPRINT 500 Printing Recorder Operating Manual - Manual (Page 29)

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3 Operation and visualisation
3.4.1 Measurement traces (signal traces)
In the factory setting, all the measurement traces are printed over the full chart
width. The parameters “zoom” and ”presentation range” offer the possibility of
altering the print-out.
Zoom
(plot area) Zoom operation is used to record a section of the complete measurement
range in an enlargement. Zoom operation is activated by the parameter Con-
figuration level 1
Î Zoom.
The values to be entered for the start (ZOOM-START) and end (ZOOM-END)
are made in %, and can be calculated as follows:
Mk = smallest measurement to be recorded
Mg = largest measurement to be recorded
Sa = scaling start
Se = scaling end
The difference between start and end values must be at least 10%.
Example:
The selected input signal is a voltage in the range 0 — 10V, and the scaling is
set to the range 0 — 2000m/h. The section of the range from 500 — 1500m/h
is to be displayed.
Presentation
range (offset) This parameter can be used to determine a range of the chart paper on which
the trace will be recorded. Either the complete chart paper width of 100 mm
can be used, or just a portion. In this way it can be arranged that all the chan-
nels are presented next to one another (strip recording). The presentation
range is activated by the parameter Configuration level 1
Î Offset.
Peak value re-
cording The printing recorder can acquire considerably more values than it can print.
At a chart speed of 20 mm/h, for instance, approximately only every 24th
measurement is recorded on the chart. The peak value recording function can
deal with this situation.
Peak value recording = OFF:
When the peak value recording is switched off, the latest value present at the
instant of printing is recorded on the chart.
Peak value recording = ON:
When the peak value recording is switched on, the minimum and maximum
measurements are stored internally between two lines which are to be printed.
ZOOM-START
Mk - Sa
( )
100 %
⋅
Se - Sa
----------------------------------------- =
ZOOM-END
Mg - Sa
( )
100 %
⋅
Se - Sa
----------------------------------------- =
ZOOM-START
500m/h 0m/h
– ( )
100 %
⋅
2000m/h 0m/h – ( )
---------------------------------------------------------- 25 % = =
ZOOM END –
1500m/h 0m/h – ( )
100 %
⋅
2000m/h 0m/h – ( )
----------------------------------------------------------------------- 75 % = =