Altera JNEye User Manual
Page 120
• FEXT Tr/Tf—Far-end crosstalk aggressor 20%-80% rise/fall time
• Crosstalk dB Factor—This parameter, Y, defines how dB is calculated where dB = Y*log10(amplitude)
• Compliance Mask—Select the channel compliance mask to be used in the channel analysis. The
Compliance Mask menu contains the following selections:
• 10GBASE-KR—Use the 10GBASE-KR channel compliance mask.
• OIF CEI-28G-SR 3.0—Use the OIF CEI-28G-SR channel compliance mask.
• OIF CEI-25G-LR 3.0—Use the OIF CEI-25G-LR channel compliance mask.
• Custom—Refer to
. Several text boxes for each channel compliance check item are
shown. You can copy or manually input the mask definitions. The format for each mask definition
data point is “Frequency (in Hz)", followed by "Amplitude (in dB)”. The number of data points is
limited to the maximum text length allowed by the text box (the maximum size is 32767 bytes). The
frequency grid of a mask must be monotonic increasing.
• Load from file—Allows you to load a predefined custom channel compliance. Each mask
definition starts with a keyword, followed by a pair of numbers that represent the data points for
“Frequency (Hz)" and "Amplitude (dB)”. Following is a sample of a custom channel compliance
mask file:
IL Mask Min
1 0
1e9 -1
10e9 -2.5
IL Mask Max
1 0
1e9 1
10e9 2.5
ILD Mask Min
1 0
1e9 -4
10e9 -4
ILD Mask Max
1 0
1e9 4
10e9 4
RL Mask
1 -10
1e9 -10
10e9 -4
ICR Mask
1e9 55
25e9 25
ICN Mask
1 10
5 10
25 0
When you click Plot, the Channel Viewer computes and generates a sequence of plots that show the
performance of the channels in the channel list
• Insertion Loss Plot—This plot is labeled CP: IL. In this plot, the insertion loss of channels, fitted curve
of transmission channels’ insertion loss, crosstalk channels’ amplitude, and power sum of all crosstalk
channels is shown. An example is illustrated in the above figure.
• Insertion Loss Deviation Plot—This plot is labeled CP: ILD. In this plot, the insertion loss deviation
is shown, as in the following figure.
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Plot Configuration Panel
UG-1146
2015.05.04
Altera Corporation
Functional Description