Common graph settings
Single / Multiple Time axes
Dewesoft offers two different time base types for multiple graphs: single time axis or multiple time axes. Press the Single time axis check-box to change between these two modes.
- Single time axis -> Single time axis box checked
The advantage of the single time axis is to have more space to display the data.
- Multiple time axis -> Single time axis box unchecked
The advantage of the multiple time axes is to make it easier to read time-related information.
Appearance by vertical instruments is the same, except Time axis is vertical.
Time axis type
You can show either absolute or relative time in the Time axis (in case of Vertical recorder in vertical direction) for each graph. Click on any graph to select it and then use the selector to make your choice.
- Relative - elapsed time since recording or monitoring began
- Absolute- current time and date; this format is compatible with the timing information according to UTC
- Absolute (time only) - current time only
- Absolute (day+time) - number of the current day in the year and the time
To make the analysis more comfortable, Dewesoft contains the possibility to change the ticks type in the recorder display. Depending on range and signal, it may be interesting to change the ticks type from Automatic to Step or Divisions.
Your acquired signal may not be only a static signal; if you have ever tried to display a high-dynamic signal with digital values, you know that you have to make some kind of statistic to get representative values. Therefore all instruments offer different display types, which can be selected from Display type drop-down list (last three choices only for Digital meter).
WARNING: Be aware that all these display types represent only statistic values for the online display. The settings have no influence on the other displays or the data storage.
With the Average time drop-down list, you can define the update rate for the selected instrument. As a standard, the values for the display type will be calculated Fast (0.1 s) over a period of 0.1 seconds, which represents also the internal minimum calculation period.
The system will still run at the dynamic sample rate and Dewesoft will acquire the data with full speed, calculate minimum, maximum, average and RMS for this time interval, however, every data point will NOT be displayed on the instrument and stored, but only these calculated values.
When From reduced rate mode is selected, the system will reduce the data continuously according to the static/reduced rate selected in STATIC/REDUCED RATE drop-down list in the channel setup. For help see -> Setup -> Storing.
Upper & Lower limit
You can set high and/or low alarm limits for each instrument, which will cause the change of color of instrument number to selected color when it is either above the high limit, or below the low limit.
If you want to use limits for an instrument, select it by clicking on it once. Use the Use check boxes to activate/deactivate high or low limit detection. If enabled, you can enter the alarm level for each.
For example, if we want to have the signal change to red when it either falls below 10 or rises above 7000 rpm, we set this meter up accordingly (see picture above).
Note that the number changes to red as a standard when it is outside of both limit, and remains green when it is within the limit(s). You can set Lower limit, Upper limit, or both limits for each meter.
If you want to change the limit color simply click on the colored field next to the high or low limit field and choose the desired color from the appearing color selector window.
NOTE: The upper and lower limit is only a visual effect; it is completely independent from the Alarm monitoring function.
Minimum and maximum shown value
You can define a Minimum and a Maximum shown value for the bar graph; this feature is very important to get a better scaling for the display.
For example your temperature measurement range is 0 to 1000 °C, but you measure only between 0 and 40 °C.
Just enter both values and the bar graph scaling will change immediately.
Run mode Time axis scaling
WARNING: This way changing Time axis can’t be done in Design mode -> available only in Run mode.
Use the blue PLUS and MINUS symbols to expand or compress the time axis. Clicking MINUS will show more time across the graph. You can show the entire length of recording, regardless of how long it is! Even days and days of data can be shown here.
By unchecked Single time axis - multiple time axis this control appear for each graph.
Appearance and functionality by vertical instruments are the same, except Time axis is vertical.
Run mode Changing the Y-axis scale/auto scale
WARNING: This way changing Y-axis can’t be done in Design mode -> available only in Run mode.
If you want to change the Y-axis for any input, the recorder offers two possibilities:
- Enter values
You may enter the values by yourself - simply click on the number at both extreme and then type in a new number.
This is possible when the cursor has following appearance:
A gray outlined box around the scale value indicates the selected channel.
- Auto scale
Move cursor to the axis scale.
When you reach the auto scale area, the cursor changes to the following appearance:
A gray outlined box around the scale value indicates the selected channel.
Press left mouse button to activate auto scale for this channel or press right mouse button to undo auto scale.
The auto scale function always calculates the minimum and maximum value of the currently displayed signal and use these values for scaling. The scaling will be only updated when you press the left mouse button!
Additional auto scale functions
Dewesoft offers additional auto scale functions when you press keys together with the left or right mouse button:
- Left mouse button - Auto scales the selected channel (see also above).
- CTRL + Left mouse button - Selects all available channels and scales all channels to the same maximum and minimum (highest and lowest value within all channels).
- CTRL + ALT + Left mouse button - Selects all available channels and scales each channel to its own maximum and minimum.
- SHIFT + Left mouse button - Scales the selected channel symmetrical around zero (± values are the same).
- CTRL + SHIFT + Left mouse button - Scales all available channels symmetrical around zero (all ± values are the same)
- CTRL + SHIFT+ ALT + Left mouse button - Selects all available channels and scales each channel symmetrical around zero (each channel to its own ± value).
- Right mouse button - Undo auto scale for the selected channel (see also above).
- CTRL + Right mouse button - Selects all available channels for undo auto scale.
Simple measurement cursor functions
WARNING: This way displaying X- and Y-axis information can’t be done in Design mode -> available only in Run mode.
If you move the mouse cursor over the signal, a white cross appears, showing the current position of the measurement cursor. As soon as you stop moving the mouse or trackball, the cursor will fix its position within the signal and move with the time. The cursor readout is displayed above the graph and shows:
- X axis information - the absolute or relative time at the cursor position, depending on the selected axis type
- Y axis information - the signal value at the cursor position, including units
As one graph may contain up to four signals, the measurement cursor always tracks to the signal next to the current position.
The next display gives an impression of the cursor functionality:
Appearance and functionality by vertical instruments are the same, except:
- Y-axis information is absolute or relative time at the cursor position and X-axis information is the signal value at the cursor position
- the cursor readout is displayed below the graph
The display below gives an impression of the cursor functionality for vertical graph.
WARNING: The measurement cursor is not available when the time base is set to a short time. It’s only working for long time measurements.