L-Series and FCS-18 Graphical User Interface User Manual
Rev D – March 2011
California Instruments
73
8.4.4 Data file comments
A comment line can be added to the data file for future reference. This
can be useful when trying to analyze data taken in the past. The comment
line will be added at the top of the data acquisition file unless the selected file
already exists in which case any new comment entered here will be ignored.
8.4.5 Data File Format
Data files are saved in plain ASCII text using the common CSV format.
These files contain the following record types :
Record 1:
File creation date and user comment line
Record 2:
Field description header
Record 3-infinity
Data records. Data record format is shown below.
Data record format
As such, each measurement cycle produces a single record. Each record
consists of the following fields :
Field name
Description
Timestamp
Date and time of recording for this record
Frequency Frequency
value
Volt A
Voltage (rms) for phase A
Current A
Current (rms) for phase A
Phase A
Phase angle with respect to phase A.
Power A
Real power for phase A
Appt.Power A
Apparent power for phase A
Power Factor A
Power factor for phase A
Volt B
Voltage (rms) for phase B
Current B
Current (rms) for phase B
Phase B
Phase angle with respect to phase B
Power B
Real power for phase B
Appt.Power B
Apparent power for phase B
Power Factor B
Power factor for phase B
Volt C
Voltage (rms) for phase C
Current C
Current (rms) for phase C
Phase C
Phase angle with respect to phase C
Power C
Real power for phase C
Appt.Power C
Apparent power for phase C
Power Factor C
Power factor for phase C
Note that any measurements and or phases that are disabled (see
section 8.1) will not be entered into the measurement record. As such, a
record may not contain all fields.
