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LEDs display during BER Based Tuning
The U4301 Analyzer module has 16 channel LEDs and four speed LEDs. The following table lists the
interpretation of these LEDs display during BER-based tuning.
Field
Channel LEDs
Green
Yellow
Red
Blinking Red / Off
Speed LEDs
Off
Blue
For a general description of the channel and speed LEDs, refer to the PCI Express Gen3 Hardware
and Probing guide. You can download this guide from www.keysight.com.
Keysight U4301 PCIe Gen3 Analyzer User's Guide
Description
Indicates no bit errors on that lane.
Indicates loss of sync or "OK"/"ERROR" is toggling quickly. You get "shades of yellow",
usually, when there are frequent bit errors.
Indicates bit error on that lane.
Indicates input FIFO overflow.
Indicates an Idle state.
Indicates that the data is being taken.
Tuning the Analyzer for a Specific DUT
5
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