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The 86105D is the ideal solution for waveform analysis of transceivers operating at 8.5 Gb/s (8X Fibre channel), 9.953 Gb/s (OC-192/STM-64), 10.3125 Gb/s (10 Gb Ethernet), 10.52 Gb/s (10X Fibre channel), all common 10 Gb/s FEC rates, and 14.025 Gb/s (16X Fibre channel) rates. The integrated optical receiver has an unfiltered bandwidth of 20 GHz. Option 281 provides an unfiltered bandwidth of 34 GHz and reference receivers for 25.78. 27.95 and 28.05 Gb/s and a general purpose 15 Gb/s filter (8 and 10 Gb/s rates are excluded). The well-designed magnitude and phase response provides high-fidelity waveforms and accurate analysis of highspeed laser designs. Switchable reference receiver capability is also available for eye-mask compliance testing at the rates mentioned above. The optical channel uses a broad wavelength photodetector operating from 750 to 1650 nm. The 62.5/125 um connector is compatible with both multimode and single-mode fibers. An electrical channel with 35 GHz bandwidth (50 GHz with option 281) can be used to characterize transceiver electrical signal performance.
Comparing modules in the 86105 series
The 86105D provides superior value with its ability to accurately test a wide range of transceiver technologies from early research and development to high-volume manufacturing. Like the 86105C plug-in, the 86105D is compatible with short and long wavelength optical signals. (The 86105C provides reference receiver coverage at rates from 155 Mb/s to 11 Gb/s and is amplified, providing very high sensitivity.) The 86105D can be configured with an unamplified 20 GHz or 34 GHz (option 281) optical channel for very high-fidelity measurements in filtered or unfiltered modes. For reduced cost option 100 eliminates the 16xFC (14 Gb/s) filter and option 200 provides only the 16xFC filter (no 8xFC or 10 Gb/s filters). If neither option is selected, 8xFC, 10G, and 16xFC filters are provided.
Configuring a complete test system
The 86105D is a plug-in module used with the 86100C/D1 digital communications analyzer (DCA-J and DCA-X). The 86100C/D requires a timing reference (trigger) to acquire waveforms. This can be achieved with a synchronous clock or pattern trigger from a pattern generator or bit-error-ratio-tester (BERT) such as the N4903B. If the system being measured not driven by a pattern generator and a synchronous timing signal is not available, the 83496B clock recovery module can be used to derive a trigger from the data being observed. The 83496B operates continuously (no gaps) from 50 Mb/s to 14.2 Gb/s2. The N1070A operates from 50 Mb/s to 32 Gb/s. For reduced jitter and increased mask margins at very high data rates, the 86107A precision timebase reduces the test system jitter level to as low as 100 fs.
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