User's Manual
PC Software for 1740 Series
Logging Power Quality Data
9
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Figure 9. Successful Saving Confirmation Message
Note
If you have checked the box Automatic time synchronization in the
Settings/General menu, the date and time of the PC clock is transferred to
the Logger every time you write setups to the Logger.
Logging Power Quality Data
W X Warning
To avoid electrical shock or damage to the equipment, read and
follow the safety warnings and cautions in the 1744/1743 or
1745 Users Manual before you make any connections to the
Logger.
Once you have saved the Logger setup data in the Logger, disconnect the Logger from
the PC, and attach the voltage leads and current probes to the distribution system to be
measured as described in the Logger’s Users Manual. The Logger settings and the
recorded data are retained in the Logger’s memory when the power is disconnected from
the Logger.
How you start and stop the logging session depends on how you set the Measurement
Period buttons – continuous job, switch activated job, or time activated job.
Downloading Logged Data to the PC
After completion of the measurement or when the job is active, you can transfer logged
data stored in the Logger to the PC. This action does not disrupt the ongoing logging
activity, so you can do it anytime.
To download the logged data to the PC:
1. Connect the Logger to the serial port of your PC. Select the menu Logger>Read
Results or click
button from tool bar.
2. Specify the name and path for the logged data file.
3. Click Save. PQ Log transfers measurement data from Logger to the PC. You will
see progress bars on the screen as the data is transferred from the Logger to the
PC.
4. The data transfer can take seconds or minutes, depending on the Baud rate and
the amount of data.
5. Once the data has downloaded to the PC, you choose a time period from the
downloaded data to store in the data file for analysis. Selecting a time period
shorter than the logging period does not delete any data. See Figure 10 for an
example how this time period selection appears. Refer to the section “Analyzing