Min/Max tracking of multi-channel digital meter with alarms

A Min/Max chart is a digital display of minimum, current and maximum data values for each channel.

Warning and alarm level exceedance indicators are provided on a per channel basis. Note that these are currently used only in the single channel digital display and the test run time Min/Max chart displays.

The Min/Max values are tracked for the lifetime of chart control:

  • If a test is started with a Min/Max chart open, the values will be tracked until the test is stopped, the chart is closed or the browser is closed or refreshed.
  • If a test is started (time = 0 seconds) and afterwards a Min/Max chart is opened (time = 5 seconds), any min/max data between time = 0 and time = 5 will not be tracked.
  • If a Min/Max chart for a channel is closed and another Min/Max chart is opened for that channel, the Min/Max chart will show data only from after its opening.

See also User preferences, General menu item for Decimal point handling of Range min/max values.

There are several options available from the menu. Click the options menu button:

  • Freeze: Select to pause the data display. Deselect to resume live data.
  • Reset: This resets the minimum and maximum values.
  • Update rate: Select the rate at which the display refreshes at 1, 2, 5 or 10 times per second. Note that in cases where the channel sample rate is less than the selected update rate, the display refreshes at the lower sample rate.