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Bit Error Ratio Tester

PBT8812/PBT8812B

800G Bit Error Ratio Tester


Semight PBT8812/PBT8812B is a high-performance Bit Error Ratio tester (BERT) which can be used for physical layer characterization and consistency test. It covers 400/800 GbE and CEI-112G standards by virtue of support for 4-level pulse amplitude modulation (PAM4) and non-return-to-zero (NRZ) signals.

Features

  • Data Rate

    Range: 24.33~57.8 GBaud
  • High-precision

    Supports ultra-fast and high-precision BER sampling (<10ms).
    Each channel can be independently configured with NRZ/PAM4, amplitude and equalization
  • Error Injection

    Supports error injection and input and output polarity switching
  • Link Compensation

    Provides 3/4/7-tap FIR tuner,
    and Inner-Eye tuner with independent control on each PAM4 level
  • Various Patterns

    PRBS7~31Q; SSPRQ /JP03A /JP03B /LIN /Square Wave/Custom Defined Patterns, etc
  • Comprehensive Capabilities

    PCS layer of RS-FEC analyzer with Pre/Post BER statistic and Margin alarm.
    Supports Histogram & SNR measurement
  • Excellent Signal Quality

    Rapid rise and fall time;
    low intrinsic jitter.
    Good RX sensitivity <100mV
  • Fully Match ATE Application Scenarios

    Powerful and flexible database management capabilities.
    Supports multiple ATE hosts

Functions and Advantages

  • Real FEC Analysis 

    SNR Monitor
    PreBER/PostBER Measurement
    Symbol Error Distribution
    FEC Margin Test
  • Real-time Data Monitoring

    Real-time bit error monitoring
    Stay informed about anomalies during testing
  • Historical Data Query

    Data stored in local database
    Retrieve test records at any time

Technical Specification


TX specification


Type

Item

PBT8812/8812B

Pattern Generator

Output

Differential/ Single-ended  PAM4 / NRZ

Terminal

AC Coupling, 1.85 mm female connector

Impedance

100 Ω ± 10%

Test Patterns

PRBS9/11/13/15/16/23/31, PRBS9Q/11Q/13Q/15Q/16Q/23Q/31Q,
SSPRQ, JP03A, JP03B, LIN, Square Wave, Custom Defined Pattern

Symbol Data Rate[1]

(GBaud)

24.33/24.8832/25/25.78125/26.5625/27.89/27.95/28.05/28.125/28.2/28.9/
48.66/49.7664/50/50.135/51.5625/53.125/56/56.25/56.4/57.8

Frequence Accuracy

±1400 PPM(1 PPM Step)

Output Amplitude

(Differential)

1000 mVp-p

Rise Time[2]

(20–80%)

<10 ps

Fall Time[2]

(20–80%)

<10 ps

Random Jitter

<350 fs

Insertion Loss

1.48 dB @ 28GHz (Odd Channel)

2.78 dB @ 28GHz (Even Channel)

Return Loss

≤-13.6 dB @ ≤28GHz

MON CLK[3]

Clock Output

Amplitude

>300mVp-p

Output Type

AC coupled, Single-ended

Div Ratio[3]

4/8/16/32

Connector

MXPD/SMPS

[1] Expansion rate requires activation of the EDR option

[2] Measured with 53.125 Gbps NRZ signal

[3] Extended frequency division ratio options require activation of the TRIG option


RX specification


Type

Item

PBT8812/8812B

Error Detector

Input

Differential PAM4 / NRZ

Terminal

AC Coupling

Impedance

100 Ω+/- 10%

Input Range[1] (Differential)

Max.1000 mVp-p

Sensitivity[2] (Differential)

80 mVp-p

Test Patterns

PRBS7/9/11/13/15/23/31
PRBS7Q/9Q/11Q/13Q/15Q/23Q/31Q, SSPRQ

Symbol rate[3]

(Gbaud)

24.33/24.8832/25/25.78125/26.5625/27.89/27.95/28.05/28.125/28.2/28.9/

48.66/49.7664/50/51.5625/53.125/56/56.25/56.4/57.8

Clock Mode

Built-in Clock Recovery (Loop bandwidth:4MHz)

Connector

1.85 mm female, 50Ω

[1] Net measurement value at the receiving end; Excessively high voltage input may damage the receiver

[2] When the input amplitude is less than the sensitivity threshold, the corresponding bit error rate may be higher than e-3 or even LOS, depending on the specific signal quality

[3] Extended rate requires activation of the EDR option

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