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products

Two different kinds of test are available to the AQ1300 series testers with ITU-T Y.1564 functionality: a configuration test mode for examining the speed and burst size per contracted service and performance test mode for measuring guaranteed bandwidth of multiple services. In configuration test mode, the AQ1300 performs either a ‘Ramp Test’, whereby the device outputs a gradually increasing volume of signals (ramp) and measures the guaranteed rate and the securing rate, or a ‘Burst size’ test (in which the device outputs burst of frame signals at regular

intervals and measures the burst bandwidth guaranteed size and the burst bandwidth securing size). The AQ1300 provides PASS/FAIL judgement according to specified thresholds of the Information Rate (IR), Frame Loss (FL), Frame Transfer Delay (FTD) and Frame Delay Variation (FDV) In performance test mode, the AQ1300 sends frames within the Committed Information Rate (CIR) of selected services at the same time to confirm whether all traffic is sent without being discarded. The test can evaluate the traffic quality for the same period for up to eight services.

For more information, see http://tmi.yokogawa.com/products/portable-ethernet-testers/

Aggregation of high speed links

All well-knownmultimode and single-mode QSFP applications, such as SR4, PSM4, PLR4 and FCp, can be converted to four duplex channels using the new FO-DCS speed converter plug-in modules from Datwyler. The connectivity of these plug- in modules splits each of the three incoming parallel optic links into four duplex links. 40G and 100G applications are now a reality in the data centre environment, and higher transmission rates will soon follow. High-speed fibre optic links connect the switches to each other as well as to today’s 10G servers and future server generations (25G and 50G). To aggregate such links cost- effectively at switch level, they have to be split into several duplex links. This requirement can be met with Datwyler’s new plug-in modules. At the rear, the speed converter plug-in modules available for OM3, OM4 and OS2 have two 12-fibre MTP couplers and route these 24 fibres using integrated fanouts to 3 x four duplex ports on the front panel. In combination with a converter plug-in module at the other end of a 24-fibre link, for example, three 100G transceivers can be connected simply and securely to 3 x four 25G transceivers.

The speed converter plug-in modules are designed for use in FO-DCS panels and sub-racks. Packing densities of up to 288 fibres can be achieved on 3U with this type of module. They comprise a robust polycarbonate housing (PC) with press-fit side panels and a 3U/7TE front panel in PC (black) or aluminium. The PC version has two integrated labelling strips for customer-specific printing.

For more information, see www.cabling.datwyler.com

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Vol. 38 No. 4 - November 2016 Issue