Semight PBT8856 is a high-performance Bit Error Ratio tester (BERT)-Semight Instruments

Bit Error Ratio Tester

PBT8856

400G Bit Error Ratio Tester

Semight PBT8856 is a high-performance Bit Error Ratio tester (BERT) which can be used for physical layer characterization and consistency test. It covers 100/200/400GbE and CEI-56G standards by virtue of support for 4-level pulse amplitude modulation (PAM4) and non-return-to-zero (NRZ) signals, as well as up to 30 Gbaud symbol rate (equivalent to 60 Gbps)

Datasheet

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Features

Rich Pattern
Supports PRBS7~31Q, SSPRQ, JP03A, JP03B, LIN, Square Wave, CJT, User Defined Pattern (64bits)
Wide Data Rate Range
20.625~30 GBaud
Comprehensive Capabilities
Supports FEC error correction analyzer
Supports ultra-fast and high-precision BER sampling (<10ms)
Fully Match ATE Application Scenarios
Can be remotely controlled via either Lan or USB port by invoking external APIs (LabVIEW, C#)

Functions and Advantages

FEC Simulation
PreBER/PostBER Measurement
Symbol Error Distribution
FEC Margin Test
Real-time Data Monitoring
Real-time bit error monitoring
Stay informed about emergencies during testing
Historical Data Query
Historical data query
Data storage local database
Call test records at any time

Type	Item	Description
Pattern Generator Specification	Output	Differential/ Single-ended PAM4 / NRZ
	Terminal	AC Coupling, 100Ω +/- 10%
	Pattern	PRBS 7/9/11/13/15/16/23/31, PRBS7~31Q； SSPRQ, JP03A, JP03B, LIN, Square wave, CJT, Custom Defined Pattern, etc.
	Symbol Data Rate (GBaud)^[1]	20.625/24.33/25/25.78125/26.5625/27.89/27.95/28.05/28.125/28.2/28.9/30
	Frequency Accuracy	±50 ppm
	Output Amplitude(Differential)^[2]	800 mVp-p/1200 mVp-p^[3]
	Rise Time(20–80%)^[4]	<15 ps
	Fall Time(20–80%)^[4]	<15 ps
	Random Jitter	<350 fs
	Connector	2.92 mm female, 50 Ω

[1]Optional EDR upgrade available, supporting more extended rates
[2]Transmitter net measurement values, default pre-emphasis/de-emphasis parameters
[3]Requires activation of HPO high power option
[4]Measured with 26.5625 Gbps NRZ signal

Type	Item	Description
Trigger Output Specification	Output Amplitude	＞300mVp-p
	Output Type	AC coupled, Single-ended
	Div Ratio (Adjustable)	4/8/16/32/64/128
	Connector	2.92 mm female, 50 Ω

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