:ECONtour Subsystem

Use the Eye Contour subsystem commands to place a group of eye-contour lines on NRZ and PAM4 eye diagrams. As shown in the following picture, an Eye Contours legend is displayed that identifies the different eye-contour lines. You can display or hide all eye-contour legends using the :DISPlay:WINDow:ECLegend command. To expand or contract all displayed eye contour legends, use the :DISPlay:WINDow:TIME:LEGend:ECEXpand command. If option 200 is not installed, an N1000A's ability to measure ultra-low levels of Random Jitter (RJ) will be reduced. Measurements of ultra-low levels of RJ can be used to obtain fixed RJ values. The Research and Development Package license has this ability.

Example

This Python script displays a group of eye-contour lines on the Channel 2A waveform. The waveform must be displayed. The script opens a session with N1010A FlexDCA (localhost) that is running on the same PC as the script.

import visa

rm = visa.ResourceManager()
FlexDCA = rm.open_resource("TCPIP0::localhost::hislip0::INSTR")

#Set Timeout - 10 seconds
FlexDCA.timeout =  5000
FlexDCA.read_termination = '\n'

FlexDCA.write(":ECONtour2:SOURce CHANnel2A")
FlexDCA.write(":ECONtour2:PSPec BER")
FlexDCA.write(":ECONtour2:BERates 1.0E-9,2.5E-15")
FlexDCA.write(":ECONtour2:DISPlay ON")

FlexDCA.write(':SYSTem:GTLocal')
FlexDCA.close()