Downloading and Viewing Full Waveforms

What data is available to download?

Both the full waveform datafiles (up to about 100 events) as well as the summary datafiles (up to about 200 summaries)
are available to download if events have been captured.

Full waveform datafiles are digital samplings of the AC waveform at 128 samples/cycle starting 1 cycle "before" a
captured event, and ending 4 cycles "after" the event (actually 2 waveforms are captured, the beginning and the end
of an event).

These full waveform data files can be opened with any standard spreadsheet, and turned into a graphical chart of the
data. TEAL provides the TEALwatch® Viewer (a macro-based Excel spreadsheet that automates charting of the data
files) to simplify this task.

Summary datafiles no longer have the full waveform data, but contain in summary form the key attributes of the triggered
event.

Why would I want to download event data?

To save event data for history, to create a report, to view a waveform, to e-mail to a customer or co-worker, etc. The
TEALwatch® has limited memory capacity and can only store a finite number of events. You should periodically
download the event data to save a permanent archive file.

TEALwatch® Data to be downloaded:

Event Triggers

Data is collected for each event that triggers a waveform capture based on the triggering parameters defined under
the Setup tab. Either full waveform data or summary data of the event is available.

Individual data files can be easily downloaded by clicking on the "Download" button for each event on the Status tab
window within the TEALwatch® user interface. Clicking on any of the download buttons will call up a standard file
download window that enables you to save the file to a file location of your choice. A default file name is supplied by
the web server, which can be modified during the save process by renaming it to a file name of your choice. We
recommend that you keep the file extension of the data file, .DAT, as the default filename extension. A data file with
a .DAT extension can be opened with Microsoft Excel™ for post processing, graphing, charting, etc., but must be
opened from within Excel. Other spreadsheet or graphing programs can also open it.

The triggers for both full waveform event capture and summary data event capture are adjustable and customizable
under the password protected Setup tab.

For every triggered event, the following data is recorded and saved:

• Event Date & Time - Time stamp of event, based on the internal Real Time Clock (see Advanced tab for more information on how to set the Real Time Clock)

• Event Trigger - Types of Trigger events include:

• Voltage Sag event – Trigger occurs when the AC voltage RMS value drops to a lower than expected value
• Voltage Swell event (also known as Voltage Surge) – Trigger occurs when the AC voltage RMS value
  rises to a higher than expected value
• Phase Balance event – Trigger occurs when the nominal balance between the 3 AC phases becomes
  unbalanced
• Frequency Deviation event – Trigger occurs when the AC mains frequency deviates significantly from
  the nominal setting
• Sub-Cycle (Transient) event - Trigger occurs when a transient event occurs that causes an excursion
  from the nominal AC waveform
• Power Loss event – Trigger occurs when the TEALwatch® loses power. This helps the user diagnose
  real system power outage issues and to differentiate when the user has simply turned OFF the main power

• Duration - The duration of the event in seconds

• Minimum Frequency (Hz) - The minimum AC frequency recorded during the event

• Maximum Frequency (Hz) - The maximum AC frequency recorded during the event

 

In addition, for each individual phase A, B and C, the following additional data are recorded and saved:

• RMS Voltage (V RMS) - Calculated RMS voltage, in Volts AC

• Minimum Voltage - The minimum recorded AC voltage during an event, in Volts AC

• Maximum Voltage - The maximum recorded AC voltage during an event, in Volts AC

• Maximum Delta to Nominal - The maximum deviation or excursion from the nominal voltage during the event, in Volts AC (allows the user to easily tell how large the event was)

• Minimum Phase (Deg) - The minimum recorded phase during an event, in Degrees

• Maximum Phase (Deg) - The maximum recorded phase during an event, in Degrees

 

The trigger events are grouped together in three major sections:

• The top section (highlighted with a light green background) lists all events whose full waveform event data is stored in non-volatile random access memory (N-V RAM). If the power monitor should lose power, these full waveform events will still be available (as well as their summary information) for downloading the next time the power monitor starts up. N-V RAM will store a minimum of 7 full waveform events. Newest events chronologically are placed at the top of the page.

• The middle section (highlighted with a light yellow background) lists all events whose full waveform event data are only stored in dynamic random access memory (DRAM) and whose summary data is stored in non-volatile memory (N-V RAM). If the power monitor should lose power, only the summary data of these events will still be available for downloading the next time the power monitor starts up, the full waveform data will not be available. N-V RAM will store a minimum of 100 summary events, and DRAM will store 93 additional full waveform events.

• The bottom section (highlighted with a light red background) lists all events, both full waveform and summary data, whose data is only stored in dynamic random access memory (DRAM). If the power monitor should lose power, all of the data for these additional 100 full waveform and summary events will be lost. When RAM is filled with event data, the oldest event chronologically is replaced with the newest event.

The status page of the TEALwatch® user interface web site showing more
details of the list of event triggers that have occurred, with summary data and
a file download option. Items in the green area have full waveform data stored
in Non-Volatile Memory. Items in the yellow area have summary data
stored in Non-Volatile Memory.

Download Trend Data:
At the bottom of the page is a button labeled “Download Trend Data.” Clicking on this button will download a single file that contains all the stored Trend data (up to 512 samples stored in non-volatile ram, with an additional 3500 stored in dynamic ram).

Trend data allows the user to view the long term trending of the AC mains by sampling the RMS voltages from once every minute to once every hour (adjustable) with an adjustable sample window (1 cycle to 3600 cycles) as well.

Download All Files:
At the bottom of the page is a button labeled Download All Files. Clicking on this button will download a single file that contains all the full waveform event data (up to 100 events) and all the summary event data (up to 200 events) in a single file.

CAUTION : The file generated by clicking the Download All Files button can be very large (several MB) and may take several minutes to download and save to the file location of your choice, even with a high speed connection.