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81195A Datasheet(PDF) 2 Page - Keysight Technologies |
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81195A Datasheet(HTML) 2 Page - Keysight Technologies |
2 / 17 page 02 | Keysight | 81195A Optical Modulation Generator Software - Data Sheet Product Description The latest developments in 200G, 400G and 1Tb coherent optical transmission systems are challenging test engineers. More and more flexibility is required to generate clean modulated signals as well as signal impairments to stress coherent receivers over multiple test scenarios. The 81195A optical modulation generator software introduces an innovative soft- ware-defined test approach. Combined with the new M8195A 65 GSa/s arbitrary waveform generator hardware Digital Signal Processor functions it improves up to 100x the speed of test, the cost and the predictability of the output. It enables generation of dual-polarization complex modulated signals as well as elec- tronic synthesis of optical signal impairments such as phase noise, polarization rotation, and polarization mode dispersion (PMD), both in real time or in a traditional waveform generation mode. In traditional fiber transmission and optical receiver testing, which uses optical elements for stress conditioning, the stress conditions can only be changed in a stochastic way resulting in long test times. In contrast, this new test approach allows you to generate and reproduce dynamic stress conditions with precise time evolution or stress statistics, increasing test coverage and reducing test time. The 81195A software in conjunction with a four-channel Keysight Technologies M8195A or M8196A arbitrary waveform generator can generate clean and distorted signals. With the digital signal processing (DSP) block of the M8195A, the parameters of the waveform (e.g. the pulse-shaping filter coefficients) and the impairments can be adjusted at run time without downloading a new waveform. The real-time waveform generation enables deterministic emulation of optical signal properties over a long period of time, which previously has not been possible. Key Features – Waveform calculation for dual-polarization, complex modulated signals (up to 256QAM) – Supporting hardware DSP in M8195A for real-time waveform generation – Off-line waveform generation for M8196A and multi-module M8195A AWGs setups – Effective use of the available M8195A module memory in real-time waveform generation mode for complex modulated signals (up to 8 GSym per channel on two IQ channels simultaneously at up to 32.5 GBaud) – Realistic emulation of optical signal properties and impairments, including phase noise, polarization mode dispersion, and polarization rotation over a long period of time – Change signal properties, ‘on-the-fly’ without needing to re-calculate the entire waveform (saves valuable time during debug and characterization) – Output triggers synchronized with impairment generation – Corresponding analysis capabilities in the Keysight Technologies N4391A/N4392A optical modulation analyzer |
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