Tektronix BERTScope, Быстрый старт Руководство пользователя

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Operation
The following table describes the displayed measurements.
Table 3: Displayed measurements
Item Description
Data rate
The actual input data rate in Hertz. If the CR platform has DDR capability (such as
the CR2500A), the CR Monitor data rate will be displayed in Gb/s or Mb/s.
Edge Density (EdgeD) The measured edge density. A ‘1010’ data pattern transmitted at the Nominal Data
Rate would have 100% edge density.
Phase Error The peak-to-peak phase error between the incoming data and the recovered clock.
This measured value will increase if jitter is present on the input data that is not
being tracked by the recovered clock.
Phase Error RMS (PhErms) The RMS phase error between the incoming data and the recovered clock
Lock Status Reports whether the CR is locked, unlocked, or in the process of locking.
By default, the instrument is con fi gured in Auto Lock mode, where it automatically attempts to acquire lock if the detected
Phase Error exceeds the Phase Error Limit setting, or if the recovered clock is unstable. Pressing the LOCK key on the CR
front panel forces a relock.
CR125A, CR175A, CR286A Quick Start User Manual 11