Keysight N4917BSCB 400G Optical Receiver Test Application User Guide
43
Concepts and Features of N4917BSCB Software
3
Table 3
Stressed receiver compliance test signal characteristics
Transmission Standard
Signal Parameter
Value
200GBASE-FR4, LR4, and DR4
400GBASE-FR8 and LR8
Signaling rate
Modulation format
Calibration test pattern
Stressed receiver test pattern
26.5625 +/- 100ppm GBd
PAM4
SSPRQ (as defined in 120.5.11.2.3)
PRBS31Q (as defined in 120.5.11.2.2)
Stress Components
Sinusoidal jitter (sinusoidally jittered clock)
Sinusoidal amplitude interferer (SI)
Gaussian noise (GN)
Inter-symbol-interference (ISI)
as defined in Table 121-12
between 100 MHz - 2GHz, non-harmonic to data
signal and other stress components
Bandwidth of at least half the signal baud rate
Frequency response of low-pass filter and E/O
converter should result at least half of dB value of
SECQ before SI and GN are added
Stress Signal Target Metrics
Stressed eye closure (SECQ)
Extinction ratio (ER)
Stressed receiver sensitivity (OMAouter)
Transmitter and dispersion eye closure for PAM4
(TDECQ) as defined in 121.8.5
as defined in 121.8.6
as defined in 121.8.9
400GBASE-DR4
Signaling rate
Modulation format
Calibration test pattern
Stressed receiver test pattern
53.125 +/- 100ppm GBd
PAM4
SSPRQ
PRBS31Q
Stress Components
Sinusoidal jitter (sinusoidally jittered clock)
Sinusoidal amplitude interferer (SI)
Gaussian noise (GN)
Inter-symbol-interference (ISI)
Same as for the other supported 400GBASE and
200GBASE standards
Stress Signal Target Metrics
Stressed eye closure (SECQ)
Extinction ratio (ER)
Stressed receiver sensitivity (OMAouter)
3.4 dB
3.5 dB
-1.9 dBm
