Camera web interface
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10.4.2 Working with alarms
You can make the camera trigger an alarm when certain conditions are met. An alarm
can be triggered by several different sources, such as a measurement result in the im-
age, a digital input, or an internal temperature sensor.
When an alarm is triggered, the camera can perform one or more tasks, e.g. save an im-
age or video sequence to camera memory, or send the image/video by e-mail to prede-
fined recipients or to an FTP site. The camera can also further trigger a variety of
external devices, using the digital output.
All active alarms are listed in the Active alarms section. A triggered alarm turns red in the
Active alarms section. Also, the label of the measurement tool in the image turns red.
Note Alarms are not available in Image Streaming cameras.
10.4.2.1 Setting an alarm based on a measurement result
To configure an alarm based on the measurement result from a spot, box, or delta meas-
urement tool, follow this procedure:
1. In the Active Measurements section, click the plus sign under Add alarm next to the
measurement result to be used for the alarm. The Add alarm dialog box appears.
2. In the Alarm label section, type an Alarm name.
3. In the Trigger section, select the Condition and temperatures that will trigger this
alarm:
Below Triggers an alarm when the temperature is below the specified Thresh-
old value. Also type a Hysteresis value.
Above Triggers an alarm when the temperature is above the specified Thresh-
old value. Also type a Hysteresis value.
Interval Triggers an alarm when the temperature is within the specified Min val-
ue and Max value.
Hysteresis is the interval within which the temperature value is allowed to vary without
causing a change in the trigger. If the threshold is set above 30.0°C and the hystere-
sis is set at 2.0°C, the trigger goes high when the temperature rises above 30.0°C
and stays high until the temperature drops below 28.0°C. In contrast, if the threshold
is set below 30.0°C, and the same hysteresis value is kept, the trigger goes high if
the temperature drops below 30.0°C and stays high until the temperature rises above
32.0°C.
4. In the Threshold time box, type the amount of time that has to pass before an alarm
is triggered. This can be used to avoid false alarms.
#T810409; r. AH/78915/78915; en-US
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