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Using the APP Recorder 6-2
6.1 Introduction
The APP Recorder Program must be running for the APP Recorder hardware to operate. The APP Recorder
Program contains information and settings that contribute to the Recorder’s versatile, user-friendly, state-
of-the-art functionality.
6.2 APP Recorder Program Functions
The APP Recorder Program carries out the following major functions:

Receives transient and extended data from the DSP circuit boards and stores the data in path
location {
C:, D:}\APP Recorder\Data . Before storing the transient and extended data in this
directory, the program automatically converts the files to the COMTRADE C37.111 – 2013
format. If the extended recording feature is enabled in the Point Assignment Record (
General
Settings tab: Sampling tab), the APP Recorder program creates the following three records each
time the recorder trips:

Transient oscillography

Extended oscillography

Extended RMS
Note: The APP Recorder program automatically names the transient and extended
records as per the IEEE C37.232-2007 COMNAMES requirement.

Receives continuous streaming data from the DSP circuit boards and writes that data in path
location of {
C:, D:}\APP Recorder\Data\OsclgrData . This data is used when the analysis
software is requesting a time slice of continuous oscillography information.

From the continuous streaming data, the APP Recorder Program calculates the following
quantities and writes that information to the path indicated:
Continuous RMS Data …………..… { C:, D:}\\APP Recorder\Data\RMSData
Continuous Frequency Data………... { C:, D:}\\APP Recorder\Data\FreqData
Continuous Phase Data………………{ C:, D:}\\APP recorder\Data\PhaseData

Receives Sequence of Event Records from the DSP circuit boards and writes that information in
the path location {
C:, D:}\\APP Recorder\Data\SerData.

Displays near real-time analog RMS values, frequency, phase, event status, trigger status, and
sequence of event log on its main window.

Displays real time analog channel oscillograms via its OScope feature.

Coordinates communication with the master station program, APP ClearView, via Ethernet or
modem.

Outputs DNP-3 analog RMS values and event status via RS-232 or Ethernet.

Outputs PMU information via Ethernet.
6.3 The APP Recorder Program Main Window
When you start the APP Recorder program, the APP Recorder window automatically appears.
The following figure illustrates the sections of the APP Recorder window.