private void tmrStartConvert_Tick(object eventSender, System.EventArgs eventArgs) /* Handles tmrStartConvert.Tick */ { ushort DataValue; int Chan = int.Parse(txtShowChannel.Text); float EngUnits = float.Parse(txtShowTrigSet.Text); ushort TrigValue = GetTrigCounts(Range, EngUnits); MccDaq.TriggerType TrigType; if (chkNegTrigger.Checked == true) { TrigType = MccDaq.TriggerType.TrigBelow; } else { TrigType = MccDaq.TriggerType.TrigAbove; } tmrStartConvert.Stop(); // Monitor the channel with MccDaq.MccBoard.ATrig // The input value that meets the threshold will become DataValue // The data value will be updated and displayed until a Stop event occurs. // Parameters: // Chan :the input channel number // TrigType :specifies whether the trigger is to be above // or below TrigValue // TrigValue :the threshold value that will cause the trigger // Range :the range for the board // DataValue :the input value read from Chan MccDaq.ErrorInfo ULStat = DaqBoard.ATrig(Chan, TrigType, TrigValue, Range, out DataValue); // print the value that meets the threshold lblTrigStatus.Text = "The value that caused the last trigger was:"; lblShowTrigValue.Text = DataValue.ToString("D"); ULStat = DaqBoard.ToEngUnits(Range, DataValue, out EngUnits); lblShowVolts.Text = EngUnits.ToString("0.00###") + "V"; tmrStartConvert.Start(); }