Hawk GUI: Calibrator Controls

HGL provides as an option a calibrator board in its acquisition boxes, controllable via the Hawk GUI left hand pull out menu:

  1. The calibrator control panel is accessible via the signal conditioning panel, third tab.
  2. There is one tab per calibrator board present in the system. Here we have a single acquisition box called “SNE-EAGLE-15”, with start channel 1 in [ ]. This box has a calibrator board fitted.
  3. More details about the calibrator board, in particular the name (DF24V4-160415) and IP address (192.168.4.15) of the dragonfly card that controls it.
  4. List of the channels that can receive the calibrator board output. The box has 32 channels (4 dragonfly cards, of 8 channels each); each of the 32 channels can be connected to the calibrator output.

For each channel, the user can control independently the signal source: from the channel input, or from the calibrator. In the image above, the user has clicked on channel 1 and is going to choose between “Normal” (the channel input) or “Calibrator”.

Below, channels 1 and 5 are connected to the calibrator, while the other channels are acquiring the signal from their respective inputs.

Below shows the master switch, which allows the user to switch all the channels to the same signal source (the calibrator or their respective inputs) at the same time:


An external calibration input is also provided, if the user wishes to use an external signal generator for calibration.

For all the channels connected to the calibrator, it is possible to choose the signal source:

  • internal (calibrator board output)
  • external (external calibration input)
  • 0 V (inputs shorted).

The source selected applies to all channels connected to the calibrator. The channels that are acquiring from their inputs (set to “Normal”) are unaffected.

The calibrator board can provide various types of signal:

  • 0 V
  • DC signal at +5 V
  • DC signal at -5 V
  • 1 KHz square wave at 5 V peak
  • 1 KHz triangle wave at 5 V peak
  • 1 KHz sine wave at 1 V peak
  • 1 KHz sine wave at 2.5 V peak
  • 1 KHz sine wave at 5 V peak

The signal selected is applied to all the channels connected to the calibrator board, as long as “Internal” signal source is selected.

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