SATEC EM920 Operation Manual - Manual (Page 154)

Chapter 8 Retrieving and Storing Files
Viewing Files On-line
154 EM920 Power Quality and Revenue Meter
Viewing Files On-line
Sometimes, it is useful to review a particular piece of
historical data on-line at the time you expect new events to
appear in the log. PAS allows you to retrieve historical data
from a particular log without storing it to a file. The data
appears only in the window on your screen. You can save it
manually to the database.
To view the log data on-line, check the On-line button
on
the PAS toolbar, select the log you want to retrieve in the
Logs menu, and then click on the Poll button
. Only new
log records are retrieved from the device. If you want to
review the entire log from the beginning, click on the Restore
log button
, and then click on the Poll button .
NOTES
1. When reading multi-section profile data and PQ
statistics files, only a first section is available for
reading online.
2. There is a difference between reading waveforms on-
line and viewing waveform files. Online waveforms are
read one record a time, so a multi-record waveform
series may not be viewed as a single waveform.
See Chapter 9 Viewing Log Files and Reports for information
on using different log views.
Retrieving Waveforms On-line on Events
Looking after a specific event in a waveform file may take
much time, especially with low-speed serial communications.
If you find an event in the event log, PQ log or Fault log file
for which a waveform has not been yet retrieved, you can
instruct PAS to read it for you and store in the meter
database without the need to read the entire file.
See Reading and Storing Waveforms On-line in Chapter 9 on
how to get a waveform from the meter for a specific event.
Exporting Files
Exporting Files in COMTRADE and PQDIF Formats
The COMTRADE and PQDIF file converters allow you to
convert waveforms into COMTRADE or PQDIF file format, and
data log tables – into PQDIF format.
Manual Converting
To manually convert your waveforms or a data log into
COMTRADE or PQDIF format:
1. Click on the Export button on the PAS toolbar.