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| Agilent N4917A Optical Receiver Stress Test Solution Data Sheet Version 1.11 Repeatable optical receiver stress tests according to 10GbE IEEE 802.3ae and 10 GFC standards * Targets 10 GbE - LR/- ER, 10 GFC * One E/O reference transmitter for 1310 nm and 1550 nm, single mode * One O/E reference receiver for 850 nm, 1260 nm, and 1640 nm, single mode and multi mode * Data rates at standard's target and up to 12.5 Gb/s in reference transmitter mode * Automation and adjustments included in the software * Conformance tests and characterization * Adjustable ER, OMA, sinusoidal interference (SI), periodic jitter (PJ) * Jitter tolerance and receiver sensitivity (BER vs OMA) result screens * Repeatable results Optical reference transmitter and receiver stress test solution Optical Receiver Stress Test The calibrated optical receiver stress test solution provides accurate signal stress for receiver tolerance and compliance testing. It is available for the popular standards of 10 Gb Ethernet IEEE 802.3ae for -LR and -ER, and for 10 G Fibre Channel. The parameters of ER, OMA, SI and PJ are calibrated and can be dialed so VECP and total jitter are be precisely set. Figure 1: Optical receiver stress test setup The stress signal is generated from the J-BERT N4903A with help of the N4917A-E01 Receiver Stress Conditioning Unit. The output of the N4917AE01 drives the 81490A Optical Reference Transmitter, which connects to the 81576A Optical Attenuator. The output of the Optical Attenuator connects to the Device under Test (DUT). The DUT electrical output connects to the J-BERT N4903A Error Detector input. This closes the loop for BER measurement, which is the base for the highest level measurements of receiver sensitivity or jitter tolerance. If the DUT output is available only as optical signal, the conversion of the optical signal for electrical BER measurement can be performed with the help of the 81495A reference receiver, which can be added to the setup, but is not mandatory. 10 GbE/10 GFC Stressed Eye Test Signals Table 1: Stressed eye signal impairment resources Stressed eye signal Jitter Sinusoidal jitter (SJ) Random jitter (RJ) Sinusiodal interference (SI) Amplitude impairments Intersymbol interference (ISI) Required Yes Optional Yes Notes Provided by J-BERT N4903A Provided by J-BERT N4903A and N4917A-E01 Receiver Stress Conditioning Unit Yes 2 Agilent N4917A Optical Receiver Stress Test Solution User Interface The N4917A software runs on the J-BERT N4903A (with option J12), or a PC with Windows XP(R). It controls the instrument setup over a USB to GPIB interface. Figure 2: Parameter Entry for ER, OMA, PJ and SI. For the defined standards the values for AO, VECP and total jitter will be displayed. The user interface operates the instruments interactively, runs the compliance test automating various measurements (such as jitter tolerance) and controls the instrument's setup and calibration. Interactive operation lets the user vary the optical parameters using dials. The automated measurements provide the generation of a report file. Figure 3: Jitter receiver sensitivity compliance measurement Agilent N4917A Optical Receiver Stress Test Solution 3 Definitions Optical receiver stress is defined by a compliance eye and a jitter tolerance curve (the standard calls it "mask") Figure 4: Compliance Eye: definition of OMA, A0 and VECP according IEEE 802.ae Applied sinusoidal jitter peak-to-peak amplitude (UI) Figure 5: Jitter tolerance curve for 10 GBASE - LR/ - ER 4 Agilent N4917A Optical Receiver Stress Test Solution Specifications Table 2: Receiver stress test solution Optical wavelength Optical fiber Extinction ratio OMA VECP from filter (no jitter added) Eye mask margin, according to IEEE 802.3ae 2002 definition Random jitter Periodic jitter (PJ) Sinusoidal interference (SI) 1310 nm and 1550 nm Single-mode fiber (SMF) 9/125 m Adjustable from 1.5 to 10.0 dB @ 1310 nm, 1.5 to 7.5 dB @ 1550 nm Up to 1 dBm (1 mW) @ ER = 3 dB, adjustable 0 to -60 dB by 0.01 dB 1.5 dB typ at ER = 3 .15 UI typ 1 ps rms typ According Periodic and Sinusoidal Jitter of N4903A-J10 0 to 400 mV @ 500 MHz to 3.2 GHz, 1 MHz resolution VECPmax 7dB typ at ER = 3 0.5 dB typ Repeatability of the sensitivity measurement Specification assumption The specifications in this document describe the solution's warranted performance. Non-warranted values are described as typical. More specifications are available in the data sheets of the individual instruments (N4903A, 81490A, 81576A). All specifications are valid after a warm-up phase as specified for the individual instruments. If not otherwise stated, all electrical inputs and outputs need to be terminated with 50 Ohm to ground. All specifications, if not otherwise stated, are using the recommended N4917A accessories. For the verification of the specifications a 86100C DCAj with either 86105B or 86105C optical module is recommended. A PRBS pattern of 2^11-1 is recommended if not otherwise stated. For the measurement of ER the use of the Extinction Ratio Correction Factor is recommended [1]. For the measurement of OMA a pattern of ..1100.. is recommended. For the measurement of RJ the use of the 86107A Precision Timebase Module is recommended, which is not mandatory for the N4917A setup. Agilent N4917A Optical Receiver Stress Test Solution 5 Typical Signals Provided by the Optical Receiver Stress Test Solution Figure 6: Eye diagram of the optical signal using the N4917A-E01 without any additional jitter added, measurement of ER and crossing point (PRBS 2^11-1 pattern) Figure 7: Eye diagram of the optical signal using the N4917A-E01 without any jitter added, measurement of OMA (..1100.. pattern) Figure 8: Jitter measurement of the optical signal using the N4917A-E01 without any jitter added (PRBS 2^11-1 pattern) 6 Agilent N4917A Optical Receiver Stress Test Solution Figure 9: Amplitude measurement of the optical signal using the N4917A-E01 without any jitter added (PRBS 2^11-1 pattern) Figure 10: Jitter measurement of the optical signal using the N4917A-E01 with 50 mUI periodic jitter and sinusoidal jitter added for a VECP of 2.2 (PRBS 2^11-1 pattern) Figure 11: Amplitude measurement of the optical signal using the N4917A-E01 with 50 mUI periodic jitter and sinusoidal jitter added for a VECP of 2.2 (PRBS 2^11-1 pattern) Agilent N4917A Optical Receiver Stress Test Solution 7 Figure 12: Short term stability: the OMA is varied that an actual DUT delivers finite BER, the measurement runs for 6 minutes and the BER is continuously recorded (x-axis is time, y-axis is BER) Figure 13: Long term stability: the OMA is set that an actual DUT delivers a BER = .6e-5, the measurement runs for 1 hour and the BER is continuously recorded (x-axis is time, y-axis is BER) 8 Agilent N4917A Optical Receiver Stress Test Solution Optimization, Adjustments and DUT Configuration The setup to run the N4917A software with the necessary accessories is described in figure 14. The N4917A automation and calibration software provides adjustable parameters for ER, OMA, SI and PJ. At the standard compliance settings it displays the values for A0, VECP and the total jitter (TJ) according to the definition of IEEE802.3ae 2002 with help of an extrapolation from measured point gathered during a calibration process. The software performs a cabling check, including an optimization for the phase matching of the differential data connection between N4903A data out and N4917A-E01 data in. This optimization is recommended the first time after setup, or whenever the cabling was removed. Beside the base points for the above parameters, it optimizes the operating point of the 81490A reference transmitter and it optimizes the crossing point of the optical signal for a minimum amount of duty cycle distortion (DCD). The gathered information is stored in a file with reference to date and standard, which can be loaded any time later, multiple files can be generated, per default the latest is in use. Beside the optimization and the adjustments, the software stores in the second step the setup of the DUT. Figure 14: Setup for calibration including the recommended accessories Agilent N4917A Optical Receiver Stress Test Solution 9 Software/PC Requirements N4917A software runs on the J-BERT N4903A or an external PC/MS Windows(R) XP Requirements: VGA (640 x 480), MS Windows(R) XP operating system with SP2, Microsoft.NET Framework 2.0. Agilent IO Libraries Suite rev. M. or later, Agilent N490X IVI - COM Driver 1.2.7 Interfaces: USB Instruments firmware requirement: N4903A rev. 4.8 or higher to run N4917A software on an external PC N4903A rev. 4.9 or higher to run N4917A software on N4903A 81600C rev. 7.0 or higher 8164B rev. 5.01 or higher 10 Agilent N4917A Optical Receiver Stress Test Solution Order Instructions N4917A-001 Single mode fiber kit containing: 2x patch cords FC/PC - FC/PC Single Mode 1x patch cord LC/PC - FC/PC Single Mode 4x 81000FI connector interface FC/PC/SPC 1x 81000LI connector interface LC (DUT) N4917A-EO1 Receiver stress conditioning unit and calibration and automation software CD ROM 10 Gb Ethernet - LR, - ER and 10 GFC Recommended accessories (not included in N4917-E01): 1x 82357B USB/GPIB interface or 1x E5810A LAN/GPIB Gateway 2x 10833A/B GPIB cable, 1/2m 1x N4871A matched cable pair 1x 15442A four SMA cables 1x N4915A-004 2.4 mm cable 1x 8710-1765 torque wrench Recommended instrument models and options * N4903A, - C13 - J10 - J12 - J20 * 81490A - 135 * 81495A - 135/ - 085 * 8164B * 81576A * 86100C - 001 - 200 - 300 * 86105B - 101/ - 102/ - 103/ - 111/ - 112/ - 113 Other usable instrument models and options * N4903A - CTR - A01 - J11 * 8163A, 8164A, 8163B, 8166A, 8166B * 81577A (the fibers with angled connectors are not provided with the N4917A-E001) * 86100C - 201 - 202 * 86105C - 100 - 200 - 300 * 86107A Not supported instrument models and options * N4903A - C07 - G07 - G13 Productivity assistance: Remote or on-site (R1380-N49xx) Productivity assistance (PS-S20 and PS-S20-02) Warranty extension: 1 year Return-to-Agilent warranty extended to 3 years (R-51B-003-C) Agilent N4917A Optical Receiver Stress Test Solution 11 Related Agilent Literature [1] Improving the Accuracy of Optical Transceiver Extinction Ratio Measurements Agilent J-BERT N4903A High-Performance Serial BERT with Complete Jitter Tolerance Testing Data Sheet Agilent J-BERT N4903A High-Performance Serial BERT Brochure BERT Family Brochure Brochure Agilent 86100C Wide-Bandwidth Oscilloscope Mainframe and Modules Technical Specifications Agilent 8163B Lightwave Multimeter, 8164B Lightwave Measurement System, 8166B Lightwave Multichannel System Technical Specifications Agilent 86105B 15 GHz Optical and 20 GHz Electrical Plug-In Module Data Sheet Agilent 86105C High Sensitivity, Broad Wavelength Plug-In Module Data Sheet Agilent 81490A Reference Transmitter 1310 & 1550 nm Data Sheet Agilent 81495A Reference Receiver Data Sheet For more information, please visit us at Pub.No. 5989-2602EN Remove all doubt Our repair and calibration services will get your equipment back to you, performing like new, when promised. You will get full value out of your Agilent equipment throughout its lifetime. Your equipment will be serviced by Agilent-trained technicians using the latest factory calibration procedures, automated repair diagnostics and genuine parts. You will always have the utmost confidence in your measurements. Agilent offers a wide range of additional expert test and measurement services for your equipment, including initial start-up assistance onsite education and training, as well as design, system integration, and project management. For more information on repair and calibration services, go to: www.agilent.com/find/removealldoubt 5989-2899EN 5989-3882EN 5988-9514EN 5989-0278EN 5988-3924EN www.agilent.com/find/open Agilent Open simplifies the process of connecting and programming test systems to help engineers design, validate and manufacture electronic products. Agilent offers open connectivity for a broad range of system-ready instruments, open industry software, PC-standard I/O and global support, which are combined to more easily integrate test system development. 5989-6929EN 5989-1604EN 5989-7326EN For more information on Agilent Technologies' products, applications or services, please contact your local Agilent office. The complete list is available at: www.agilent.com/find/contactus Phone or Fax 5989-7526EN United States: (tel) 800 829 4444 (fax) 800 829 4433 Canada: (tel) 877 894 4414 (fax) 800 746 4866 China: (tel) 800 810 0189 (fax) 800 820 2816 Europe: (tel) 31 20 547 2111 Japan: (tel) (81) 426 56 7832 (fax) (81) 426 56 7840 Korea: (tel) (080) 769 0800 (fax) (080)769 0900 Latin America: (tel) (305) 269 7500 www.agilent.com/find/optical_stress Product specifications and descriptions in this document are subject to change without any notice. For the latest version of this document, please visit our website at: www.agilent.com/find/optical_stress and go to the KEY Library information area or insert the publication number (5989-6315EN) into the search engine. Taiwan: (tel) 0800 047 866 (fax) 0800 286 331 Other Asia Pacific Countries: (tel) (65) 6375 8100 (fax) (65) 6755 0042 Email: tm_ap@agilent.com Revised: 09/14/06 www.agilent.com/find/emailupdates Get the latest information on the products and applications you select. (c) Agilent Technologies, Inc. 2007, 2008 Printed in USA, January 8th 2008 5989-6315EN www.agilent.com/find/agilentdirect Quickly choose and use your test equipment solutions with confidence. |
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