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Overview:
The Eye-BERT 100G is a low cost, full-featured, stand-alone communication test set with integrated
PRBS generator, PRBS detector, error counter, and eye opening monitor / scanner. Three different
physical interfaces are provided including QSFP28, SFP28, and electrical SMA giving 13 different
configurations including mixed media testing. The tester supports select data rates from 1.25 to
29Gbps on up to 4 simultaneous channels. Fast post equalizer eye monitoring and scanning can be
performed on any input channel above 5Gbps.
The device communicates via USB or Ethernet interface using the supplied Windows application; the
tester can also be operated in stand alone mode without a computer. Users can also develop their
own applications using the simple command / messaging protocol. The unit is supplied with anti-skid
bumpers and is small enough to be integrated into larger systems for dedicated link verification.
Warnings and Precautions:
 Do not exceed manufacturers recommended electrical or optical input power on any port
 Use only compatible fiber optical connectors and modules
 Use only the supplied 5VDC power supply
 Observe ESD precautions when handling
 Proper ventilation may be required depending on the environment and transceiver
 Unused / undefined output ports may generate unwanted signals and should be disconnected
or disregarded
 SMA connectors can be easily damaged by excessive mechanical strain or force. Strain relief
or other precautions should be used to prevent damage.
Front Panel Connections and Indicators
The following tables describe each of the interfaces in detail starting from the top image and working
left to right.
www.spectronixinc.com
Page
1
Eye-BERT 100G
Users Manual
Eye-BERT 100G User's Guide V 0.2

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Summary of Contents for Spectronix Eye-BERT 100G

  • Page 1 Users Manual Overview: The Eye-BERT 100G is a low cost, full-featured, stand-alone communication test set with integrated PRBS generator, PRBS detector, error counter, and eye opening monitor / scanner. Three different physical interfaces are provided including QSFP28, SFP28, and electrical SMA giving 13 different configurations including mixed media testing.
  • Page 2 Computer interface for user supplied software. Ethernet Computer interface for user supplied software. SFP Slot Accepts any MSA compatible SFP, SFP+, or SFP28 QSFP Slot Accepts any MSA compatible QSFP, QSFP+, or QSFP28 www.spectronixinc.com Page Eye-BERT 100G User’s Guide V 0.2...
  • Page 3 2. Connect power to the Eye-BERT 100G using the supplied 5VDC adapter. 3. For USB connection, plug the Eye-BERT 100G into a free USB port. When the hardware installation wizard asks for the driver location, browse to “cdc_NTXPV764.inf” located in the installation directory.
  • Page 4 • Rate dial: used to adjust the data rate • Rate box: display / adjusts the data rate • Pattern: sets the generator test pattern • Clock Divider: sets the output clock divide ratio www.spectronixinc.com Page Eye-BERT 100G User’s Guide V 0.2...
  • Page 5 • Scale: sets the vertical scale (mV/div) • Scan: updates the eye plot • Save: saves the eye plot as a bitmap • Contrast, Derivative, Black and White, Invert Colors: adjusts the plot display options www.spectronixinc.com Page Eye-BERT 100G User’s Guide V 0.2...
  • Page 6 • Invert check box: changes the output polarity • Receiver Icon: displays the receiver input status: Lock Icon: pattern detector is locked Green: signal but no pattern Red: no signal (transitions) www.spectronixinc.com Page Eye-BERT 100G User’s Guide V 0.2...
  • Page 7 0.1 and 100S • Start / Stop: starts or stops logging General Buttons Description • Reset button: resets all error counters • Opt Eq: re-optimizes the input equalizers • About: displays version number www.spectronixinc.com Page Eye-BERT 100G User’s Guide V 0.2...
  • Page 8 PRBS signals from other equipment as long as the rate is within its lock in tolerance. Additionally the Eye-BERT 100G will identify and lock onto any supported PRBS signal and polarity without having configure its generator for a particular pattern. These features enable maximum flexibility and allow remote testing with a separate generator.
  • Page 9 CSA is triggered from the recovered clock output. The bandwidth characteristics of the output waveform are adjusted using the transmit FIR filter coefficients to illustrate the performance of the eye opening monitor. www.spectronixinc.com Page Eye-BERT 100G User’s Guide V 0.2...
  • Page 10 Note, error free operation is still realized despite the reduced eye opening. Electrical Transmitter Output Post Equalizer Eye Opening (Optimized) (Over equalized) www.spectronixinc.com Page Eye-BERT 100G User’s Guide V 0.2...
  • Page 11 Optimal transmit eye opening is achieved using the same transmit filter bandwidth (pre and post tap coefficients are zero); only the amplitude is increased with the main tap. Again the reported eye opening closely matches the transmit eye. Post Equalizer Eye Opening Electrical Transmitter Output (Optimized) www.spectronixinc.com Page Eye-BERT 100G User’s Guide V 0.2...
  • Page 12 Eye Opening Comparison for other rates (transmit output optimized - Tx FIR: 0, 24 0): 20Gbps, Post Equalizer Eye Opening 20Gbps, Electrical Transmitter Output 10Gbps, Post Equalizer Eye Opening 10Gbps, Electrical Transmitter Output www.spectronixinc.com Page Eye-BERT 100G User’s Guide V 0.2...
  • Page 13 6.25Gbps, Electrical Transmitter Output Stand Alone Operation One unique feature of the The Eye-BERT 100G is its ability to operate without a computer. Since configuration parameters are stored between power cycles, the unit powers up and begins testing with the most recent settings. Using the front panel LEDs and error reset button, the user can perform pass / fail BER testing without the need of a computer.
  • Page 14 Changing the IP Address The Digi Device Discovery utility allows the user to retrieve and change the Eye-BERT 100G IP address. The installation program “40002265_G.exe” can be found on the Spectronix or Digi web sites. After installing the utility, disable Windows Firewall and any other virus or firewall programs and start the program.
  • Page 15 LETTER OF VOLOTILITY The Eye-BERT 100G contains both volatile and non volatile memory. The Eye-BERT firmware application, settings, and network configuration are stored in non volatile memory and program variables and settings are stored in volatile RAM which is cleared upon power down. The user has no means of directly altering the non volatile memory without opening up the unit and reprogramming the device using a special programming adapter.