2015 Bit Error Ratio and Waveform Analysis Volume
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2015 Bit Error Ratio and Waveform Analysis Volume - 1

Keysight Technologies Lightwave Catalog

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2015 Bit Error Ratio and Waveform Analysis Volume - 2

2 | Keysight | Lightwave Catalog 2015 | Volume III Take the express lane to design verification The Keysight J-BERT M8020A is the first in a series of new BER test solutions. It enables fast, accurate receiver characterization of single- and multi-lane devices. With today’s highest level of integration, this J-BERT streamlines your test setup. In addition, automated in-situ calibration of signal conditions ensures accurate and repeatable measurements. An interactive link training allows the M8020A to behave like a real partner. Keysight J-BERT M8020A high performance BERT Data rates up to...

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2015 Bit Error Ratio and Waveform Analysis Volume - 3

3 | Keysight | Lightwave Catalog 2015 | Volume II Since more than 30 years, Keysight offers high-performance solutions to support you in building the high-speed communication network. Your experience and feedback helped us to continuously improve the product per- formance and quality, while significantly reducing the cost, especially when it comes to manufacturing optical Your needs and my confidence into our quality let me now offer our products with a 3-year warranty that's standard on all instruments worldwide. This combination of reliability and coverage brings you three key benefits:...

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2015 Bit Error Ratio and Waveform Analysis Volume - 4

4 | Keysight | Lightwave Catalog 2015 | Volume III Applications: Optimizing Manufacturing Test Cost www.keysight.com/find/dcax Introduction Common transceiver types and manufacturing lows Manufacturers of optical transceivers are faced with increasing challenges to their businesses, particularly how to reduce product cost. Pressures to reduce cost as data rates rise means manufacturing engineering managers and their engineers must be more creative in how to reduce costs before their competitors do. Traditional methods of eliminating tests or trying to make tests run faster may not be...

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2015 Bit Error Ratio and Waveform Analysis Volume - 5

5 | Keysight | Lightwave Catalog 2015 | Volume III Applications: Optical Receiver Stress Test www.keysight.com/find/optical_stress The fundamental test for these network elements is the bit error ratio, demonstrating reliable operation in digital data transmission systems and networks. The basic principle is simple: the known transmitted bits are compared with the received bits over a transmission link including the device under test. The bit errors are counted and compared with the total number of bits to give the bit error ratio (BER). The applied test data signal can be degraded with...

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2015 Bit Error Ratio and Waveform Analysis Volume - 6

6 | Keysight | Lightwave Catalog 2015 | Volume III Applications: Optical Receiver Stress Test www.keysight.com/find/optical_stress Stress conditioning setup: Stress conditioning varies depending on the standard and the speed class of the component. But the principle of stress conditioning remains the same: – Firstly, this block adds different types of jitter, like random jitter, periodic jitter or sinusoidal jitter, to generate deined horizontal closure of the test pattern’s eye shape – Secondly, this block exposes different types of amplitude distortions, like sinusoidal amplitude...

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2015 Bit Error Ratio and Waveform Analysis Volume - 7

7 | Keysight | Lightwave Catalog 2015 | Volume III Applications: Optical Receiver Stress Test www.keysight.com/find/optical_stress Reference transmitter conditioning setup Signal characterization measurement This setup varies depending on the speed class and number of lanes. For single lane setups it is just an E/O converter and an optical attenuator. For multi-lane applications, it gets more complicated. Test signal calibration and veriication Signal characterization measurement WDM conformance testing 40 Gbase, 100 Gbase -LR4, -ER4 Reference receiver To receiver under test Clean clock...

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2015 Bit Error Ratio and Waveform Analysis Volume - 8

8 | Keysight | Lightwave Catalog 2015 | Volume III Applications: Testing Transceivers Used in Fibre Channel Networks www.keysight.com/find/n4960a For 16x Fibre Channel (16 GFC) for transceiver testing There are three topologies in this type of network including pointto-point, arbitrated loop, and switched fabric. The connections between devices use transceivers for optimization. For example, in a switched fabric topology, SFP+ (8 GFC and 16 GFC), XFP (10 Gb/s) and SFP (≤ 4 Gb/s) are types of transceivers that connect between the switched fabric and various devices such as storage and...

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2015 Bit Error Ratio and Waveform Analysis Volume - 9

09 | Keysight | Lightwave Catalog 2015 | Volume III Applications: Passive Optical Network (PON) Test Solution www.keysight.com/find/pon This example from the optical communication domain is about passive optical networks (PON) based on time division multiple access (TDMA) as used by GPON and BPON. What is PON? A passive optical network (PON) – speciied by the full service access network (FSAN) vendor consortium – is an access technology for FTTx networks using small inexpensive, passive splitters, instead of optical repeaters. In downstream direction, the signal from an optical line...

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2015 Bit Error Ratio and Waveform Analysis Volume - 10

10 | Keysight | Lightwave Catalog 2015 | Volume III Applications: Communications Waveform Measurements www.keysight.com/find/dcax Application overview For any high-speed communications signal, the channel and basic signal characteristics must be assessed for compliance with standards and interoperability with other devices in the system path. Digital Communications Analyzers (DCA’s) based on wide bandwidth sampling oscilloscopes are recognized as the industry standards for accurate analysis of optical waveforms in R&D, device validation and volume transceiver manufacturing. In addition to...

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2015 Bit Error Ratio and Waveform Analysis Volume - 11

11 | Keysight | Lightwave Catalog 2015 | Volume III Applications: Communications Waveform Measurements www.keysight.com/find/dcax Waveform measurements Not all waveform measurements of optical signals are performed with a reference receiver. The iltering can be switched out to provide a wider bandwidth measurement system. The uniltered properties of the waveform are accurately observed. The transmitter output may be viewed as an uniltered eye, or as a pulse train depending on how the DCA is triggered. A DCA can be placed in ‘pattern lock’ mode to view the individual bits of a digital...

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