Data Logger Mode

In the Data Logger mode, the computer's clock controls measurement start/stop/interval, and readings are stored in a data log on the computer.

Note: For more efficient file management, file partitioning is used for data logs that generate large data files. The file size limit varies by bench application and is based on the number of data points, traces, and captures. If the data file size exceeds the file size limit for the bench application, BenchVue saves that file, closes it, and then opens a new file.

Note: If your IO connection is especially slow or if communication is disrupted, you will likely experience timing issues in the Data Logger mode. To avoid these timing issues, be sure your IO connection is adequate and increase your sample period as needed.

Note: Running data logging operations while in the Trace View with multiple traces displayed will likely impact the overall timing of the data log, especially with low-performance computers. For data logs with more than eight traces displayed, a high-performance computer is recommended (>3 GHz Processor, minimum of 4 GB of RAM).

Enable Data Logging

Select the "Enable Data Logging" checkbox to enable data logging.

Data Log Name

The default file name consists of the power meter model number and serial number followed by the measurement number (Measx) and a numeric index. For example, U2022XA MY123456789 Meas1 10.

To change the default name, click the existing name to open the file name editor. You can edit the prefix name and also have the option to include or exclude the date, current time, and numeric index. The date is in the form yyyy-mm-dd and the time is in the form hh-mm-ss (24-hour time format). For example, <model> <serial number> Meas1 2013-09-20 11-40-26 1 – September 20, 2013 at 11:40:26 with a numeric index of 1.

If included, the date, time, and numeric index fields are automatically updated with each subsequent data log operation from this bench application.
The date and time fields are based on your computer's internal clock setting.

Note: By default, data logs are stored in the "My Documents" folder on your computer and are organized by instrument type. For example – C:\Users\<user_name>\Documents\Keysight\BenchVue\Power Meter\Data Logs\.

Trace Threshold (Trace View Only)

In the Trace View with a single trace displayed, you can set a Trace Threshold percentage for data logging. Specify a value between 0% and 100% (default = 20%).

Common Data Logging Start

Immediately with Start Button - Start data logging when you click the button or the button.

At Time - Start data logging at a specific time and date. Enter the desired date in the form yyyy (year), mm (month), and dd (day). Enter the desired time in the form hh (hours), mm (minutes), and ss (seconds).

Common Data Logging Stop

Immediately with Stop Button - Terminate data logging when you click the button or the button.

Duration - Terminate data logging after the specified amount of time has elapsed. Enter the desired duration in the form dd (days), hh (hours), mm (minutes), ss (seconds), and ms (milliseconds).