Tektronix TDSUSB2, Manual

Page: 73 / 250

Taking Measurements
TSV file format description
For Low Speed and Full Speed Signal Quality Check, the input TSV file is an m
x 3 matrix with m rows and three columns. The file has Time values and Voltage
values for D+ and D– in the first, second and third columns respectively.
The input TSV file for High Speed Signal Quality Check is a m x 2 matrix with
m rows and two columns. The file has Time and Voltage values for Differential
signals in the first and second columns.
The input TSV files for Inrush and Droop tests are an m x 2 matrix with m rows
and 2 columns. For Inrush tests, the file has Time and Current values in the first
and second columns. For Droop test, the file has Time and Voltage values in the
first and second columns.
CSV file format description
Low Speed and Full Speed single-ended signals for Signal Quality Check require
two .csv files to generate the corresponding TSV file. The .csv files have two
columns. One .csv file has time and voltage values for D+ signals, while the
second column has the time and the current values for D– signals. Both files must
have the same time values.
Differential signals require one .csv file with two columns, one column for time
and another for voltage values.
If you select Differential for Inrush and Droop signals, the .csv file has two
columns: one column for time values, and another for current and voltage values.
You require only one .csv file for Inrush and Droop tests. This .csv file has two
columns: one column for the Time Values and the other for Current (Inrush) and
Voltage (Droop) values. You must use the Differential option for conversion.
TDSUSB2 Universal Serial Bus Measurement Package 59