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Burst Mode Bit Error Ratio Tester

rBT3250

50G Burst Mode Bit Error Ratio Tester


Semight 50G Burst Mode Bit Error Ratio Tester rBT3250 is specifically designed for testing new burst error code analyzers for optical line terminals (OLTs) in next-generation 25G/50G passive optical network (PON) applications, used to evaluate the performance of 25G or 50G OLT receivers in burst mode.

Features

  • Multirate

    Burst rate: 24.8832/25.78125
    /49.7664/51.5625 Gbps
  • Downlink Continuous Error Bits Testing Channel

    2 channels with NRZ/PAM4 up to 50Gbps
  • Control Signal Matching

    Provides 2 synchronous ONU laser enable control signals
    or 2 synchronous reset control signals
  • Rich Trigger Signal

    Supports 1 RSSI Trigger signal
    Supports 1 Trigger signal
  • High Efficiency

    Quick configuration download and fast hardware response speed
    Supports reset signal automatic positioning function
  • Fully Match ATE Application

    With powerful and flexible database management capabilities

Functions and Advantages

  • Support Combo-PON for Burst Testing

    Dual reset signals, adjustable reset position, Combo-PON requires 2 reset signals.
  • Dual Package Testing

    Each data packet has different attenuation, there is a phase jump between different data packets, and there are long connections of "1" and "0" in the data packets.
    Need to simulate the generation of the worst 2 ONU signals.
  • Built-in Clock Recovery, Supports for Long Fiber Testing

    The built-in clock recovery allows rBT3250 to operate in a real long fiber working environment, which is basically impossible to achieve in other commonly used solutions in the industry, because those systems do not support clock recovery and cannot adapt to the impact of long fibers on latency and jitter.

TX Specification


Type

Item

Description

Pattern Generator Specification

Output

Differential/Single-ended NRZ

Terminal

AC Coupling

Output Impedance

100 Ω ± 10%

Pattern

PRBS7, 15, 23, 31, SSPR, Custom Defined Pattern and CID

Burst Signal Rate (Gbps)

24.8832/25.78125/49.7664/51.5625

Frequency Accuracy

±50 ppm (typical)

Output Amplitude (differential)

100-600mVpp (typical) [1]

Rise Time [2]

(20–80%)

<12ps (typical)

Fall Time [2]

(20–80%)

<12ps (typical)

Random Jitter [3] 

<0.9ps (typical)

Laser Enable(TXEN)

LVTTL 3.3V 

Reset Signal

LVTTL 3.3V, adjustable voltage level, trigger position, and width

Connector

2.4mm female, 50 Ω


Trigger and Clock Specification

Clock Output Amplitude

>250 mVp-p

Output Type

AC Coupled, Single-ended

Div Ratio (Adjustable)

4/8/16

[1]Net measurement value at the transmitter's end, default pre-emphasis/de-emphasis parameters

[2]Measured with 24.8832 Gbps NRZ signal

[3]Tested with/after Jitter separation



RX Specification


Type

Item

Description

Error Detector Specification

Input

Differential NRZ

Terminal

AC Coupled

Input Impedance

100 Ω ±10%

Input Range (Differential) [1]

100 ~ 800mVp-p (typical)

RSSI (Differential) [1]

100mVp-p (typical)

Pattern

PRBS7, 15, 23, 31, CID

Symbol Rate (Gbaud)

24.8832/25.78125/49.7664/51.5625

Connector

2.4mm female, 50 Ω

[1]Take care of output amplitude from DUT as the high voltage signal may damage the receiver

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