eldo_user

Working with S, Y, Z Parameters
CITIfile Data File Format
CITIfile Data File Format
Input for: Eldo and Eldo RF
CITIfile stands for Common Instrumentation Transfer and Interchange file format. Eldo
partially supports CITIfile versions A.01.00 and A.01.01 formats for reading only. When
reading, the format is automatically detected.
Format
The CITIfile data format file is an ASCII text file in which data appears line by line: N lines for
each data point of N ports. The data points are stored in increasing order of frequency.
Tip
CITIfile data format files follow general syntax rules. The standard is available from the
Agilent website:
http://edadocs.software.keysight.com/display/ads2009U1/
Working+with+Data+Files#WorkingwithDataFiles-CITIfileDataFormat
• A typical CITIfile package is divided into two parts:
o
o
The header is made up of keywords and setup information.
The data usually consists of one or more arrays of data.
• The length of a line within a CITIfile package should not exceed 80 characters. This
allows instruments which may have limited RAM to define a reasonable input buffer
length.
• Keywords are always at the beginning of a new line. The end of a line is as defined by
the file system or transfer mechanism being used.
• Arrays of data start after the BEGIN keyword, and the END keyword follows the last
data element in an array.
Parameters
Keyword
CITIFILE
NAME
VAR
CONSTANT
Table 14-2. CITIfile Data Format Supported Keywords
Limitations / Requirements
Only A.01.00 and A.01.01 revisions are supported.
Keywords after NAME are ignored.
Only FREQ and MAG keywords supported.
VAR FREQ MAG is mandatory.
Supported:
NBR_OF_PORTS (mandatory).
NORMALIZATION (optional, only the value “1” is supported).
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Eldo® User's Manual, 15.3