peak to peak jitter and BER

[kooller]

Hi everybody,
I have read from paper that the relationship between RMS value of jitter and peak to peak jitter is depend on BER. Can anyone tell me what BER stand for here and why it has relationship with p-p jitter?

 

[qieda]

BER = Bit Error Rate
For a serial data stream this give the number of bits which are sampled wrong due to jitter. So it is a precentage of errors.
e.g. 10e-12 means one out of 10e12 bits are wrong.

the RMS (or sigma) value is given for random jitter (RJ)
random jitter is gaussian and unbound (from the theory)
For a gausian random jitter the peak to peak value depends on the time how long (or how often) you do your measurement.

The RMS (or sigma) value defines how many sample are in a specific limit
e.g. ~ 99.7% are within +- 3sigma.
99.7% means a BER or ~3e-3

Based on this example for a BER of 3e-3 you can multiply your RMS with 6 to get
the peak to peak jitter value