Wikipedia
Jitterlyzer
FS5000 or FS5K may also refer to Feature Server 5000 by Alcatel-Lucent.
The FS5000 Jitterlyzer performs physical layer serial bus jitter evaluation. It can inject controlled jitter and measure the characteristics of incoming jitter. When teamed with a logic analyzer or protocol analyzer, it can correlate these measurements with protocol analysis. Physical-layer tests can be performed while the system under test is processing live bus traffic.