Agilent Technologies Signal Analyzer N9030a - Manual (Page 1055)

6 RLC Swept SA Measurement Front-Panel & SCPI Reference
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Limits File Contents
Limits may be exported into a data file with a .csv extension. They may be imported from that
data file; they may also be imported from a legacy limit file with a .lim extension. The .lim files
meet the specification for limit files contained in the EMI measurement guide, HP E7415A.
.csv file format
Except for information in quotes, limit line files are not case sensitive. Information in bold is
required verbatim; other text is example text, and italic text is commentary which should not be
present in the file.
The first five lines are system-required header lines, and must be in the correct order.
LimitData file type name
“FCC Part 15”File Description
“Class B Radiated”Comment
A.01.00.R0001,N9020AInstrument Version, Model Number
P13 EA3 UK6 ,01Option List, File Format Version
The next few lines describe the parameters; on export they will be in the order shown, on import
they can be in any order. If some parameters are missing, they will revert to the default.
Type, UpperUpper|Lower
X Axis Unit, MHzMHz|S; other units should be converted; this also specifies the domain
Amplitude Unit, dBmdBm|V; all other units should be converted appropriately
Frequency Interpolation, LinearLogarithmic|Linear
Amplitude Interpolation, Logarithmic Logarithmic|Linear
X Control, FixedFixed|Relative; on input we consider only the first three characters
Y Control, FixedFixed|Relative; on input we consider only the first three characters
Margin, 0Always in dB. A 0 margin is equivalent to margin off
X Offset, 10Expressed in the X axis units
Y Offset, 5Expressed in the Amplitude units
The Amplitude Unit line in the limits file may contain an antenna factor unit, for example:
Amplitude Unit=dBuV/m
Antenna factor units are dBuV/m, dBuA/m, dBpT, and dBG. In this case, the unit is treated
exactly as though it were dBuV, meaning that all of the limits are interpreted to have units of
dBuV. The box does NOT change Y Axis Units when such a limit is loaded in.
The X axis unit also specifies the domain (time or frequency). It is not possible to have both time-
domain lines and frequency-domain lines at the same time; if a time-domain line is imported
while the other lines are in the frequency domain (or vice-versa), all limit lines will be deleted
prior to import.
Remote Language Compatibility Measurement Application Reference 1055