Adding an Alarm

Use the Channel Configuration to monitor your signals and trigger an alarm when the selected value conditions are met.

1. Select one or more channels you wish to add an alarm to.
2. Hover over a channel row to see the Configure gear . Click the gear for the channel you wish to add an alarm to.
3. Select the Alarms tab in the Channel Configuration dialog.
4. Specify one of the following actions to monitor to trigger the alarm:
   • Table 1. Analog Channels

     Rises above value	Alarm is triggered when the signal value rises above the specified value.
     Falls below value	Alarm is triggered when the signal value falls below the specified value.
     Enters range	Alarm is triggered when the signal value enters the specified range.
     Leaves range	Alarm is triggered when the signal leaves the specified range.

   • Table 2. Digital Channels

     Is low	Alarm is triggered when the signal transitions to low (0).
     Is high	Alarm is triggered when the signal transitions to high (1).

5. Select the alarm types you wish to enable: Critical and Warning.
6. Specify the values for the alarm type you are using.
   

   Note  

   If you are using both alarm types, the values specified for the Critical alarm must be more restrictive than the Warning alarm values.

   Values are also constrained by the Physical Minimum and Physical Maximum range specified in the Channel Configuration. Alarm values set outside of the Physical range will be coerced to within the set Physical limits.

7. For analog input channels, specify the Hysteresis, which is the threshold relative to the alarm value, in order to prevent clearing the alarm if the data varies due to noise or jitter in the signal.

Alarms are enabled when the test is running. Alarm conditions are not monitored when the test is not running.