Profile Notes

Profile: The profile name.

Download: The detail supporting this image can be downloaded in an xml file. Click on Download to open it.

Description: An expanded title describing the profile.

Nominal Watts: The element's wattage defined on the manufacture's package.

Estimated Watts: The element's wattage as calculated at the steady state position.

Stable Area: The sum of the absolute values of the amperage measured at each sample for one cycle after the curve has stablized.

Area: The sum of the absolute values of the amperage measured at each sample for one cycle for the curve you are viewing. You can find this value using the following procedure: Open the xml file described above. Under the <Def>Amps</Def> <Y> section of the file add the sum of the absolute values in this section.

State: On or Off. This is viewed in relation to previous data. On means more amps than previously monitored; Off means less amps than previously monitored. It may be a variable amount. It could be viewed as Increase (On) or Decrease (Off). This state is defined during the monitor cycle. Thus "On" could end up with fewer watts if the original spike monitored increases the area from the previous cycle but after decay the stable area is actually less.

Curves of the Profile image:

A cycle contains typically 735 samples and is defined as starting and ending with the increasing voltage sample closest to zero. The sampling rate is 44100 hertz. (44100 / 60 hertz = 735 samples per cycle.)

Amps: The amperage recorded during one cycle.

DecayAmps: This value is divided to bring it on scale. It is the Area (defined above) for each of the Cycles between this image and the last Cycle defined in Stable Area above. The decay is measured until the change between cycles is minimal. The Decay Counter (number of hertz) is listed in parentheses following the color. This same number of hertz is used for other curves. Note: although the word Decay is used it is possible for the element being monitored to increase over time.

PeakAmps: This is the maximum point in each cycle. You can see the first value on this curve matches the height of Amps curve. Which is what it represents (The peak amps for this first cycle.)

PeakLocation: The sample number within the cycle associated with PeakAmps. In most elements the PeakLocation is stable between cycles. In other elements this peak location moves. In a "perfect" wave one would expect a peak location of 184 (735 samples / 4). If the peak (it's absolute value) is in the second half of the wave, this number would be 551.

Reactance: This reflects the inductive (below zero or amps lagging volts) or capacitive (above zero or amps leading volts) character of the element being monitored. It is the location of the Amps curve at the time Volts crosses zero. You can see the first point on the curve matches the first point on the Amps curve. You can see the second point on the curve matches the amplitude of the last point on the Amps curve (Actually the first point of the next cycle.) A purely resistive element would be expected to be on the zero line.

Volts: This is the voltage recorded at the same time period as Amps above. This is one hertz.


Monitor: This image is three hertz in duration. It is associated with the above profile.

If the state of the element is "On", you see the first cycle is where the event change is monitored. A second unstable cycle, and the third cycle. This third cycle is detailed in the above profile. The Monitor cycle is only useful in detecting change. The random time that power is applied doesn't make the profile for this cycle repeatable. However, you can typically see the voltage being dragged down by the current inrush. The second cycle is typically the most dramatic and has the largest amperage. But this profile is not repeatable as well. If power is applied late in the Monitor cycle it is a much different profile than if power is applied near the start of the Monitor cycle.

If the state of the element is "Off", the First cycle will be the last full cycle of the element at steady state. This is the profile that is defined above. The second cycle will be the monitor event where power is removed. The third cycle will typically be flat but has been seen to have some bounce from the power removal.

Download: The detail supporting this three hertz image can be downloaded in an xml file. Click on Download to open it.

Curves of the Monitor image:

Amps: This is the amperage recorded during the three cycles.

Volts: This is the voltage recorded during the three cycles.


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