AEM 3945-B Manual

A SERVICE OF

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74

Power Quality Analyzer Model 3945-B

Duration: The Alarm will only be recorded if the duration of the parameter meeting

thethresholdcriteriaexceedstheduration.Theminimumalarmdurationcanbein

minutes or seconds. In the case of Vrms, Urms or Arms not using neutral current,

can also be in hundredths of a second.

For Vrms, Urms, and Arms, it can be useful to set a duration of 0 seconds. In that

caseaneventasshortasahalfcyclecanbedetected(8millisecondsat60Hz).

For all other parameters, the minimum duration that can be detected is 1 second.

NOTE: You can check for alarms, records and search for transients at the same

time.

NOTE: Alarms are not stored if the PowerPad is turned off.

6.6.5 Recordings Conﬁguration

TheRecordingwindowshowsthedialogboxusedtoconguretheparametersfor

a recording session.

Figure 6-11

Fourdifferentcongurationsareavailable.Morecongurationscanbesavedby

pressing “Save to File” and recalled later by pressing “Load From File”.