This 96 Fiber MTP® Trunk Assembly will have (8) 12 Fiber MTP® Connectors on each end.
Method A has a key up key down position, and the fiber remains the same straight through the cable. Therefore each fiber is in the same position on each end of the cable. Fiber 1 in the cassette mates to Fiber 1 in the cable assembly, which mates to Fiber 1 in the end cassette. The transmit/receive flip must happen with the patch cords either at the beginning or end of the link to ensure proper transceiver polarity.
Method B utilizes a key up to key up position and this fiber cable is fully flipped on either end. This type of mating creates an inversion, where Fiber 1 is mated with Fiber 12, and Fiber 2 is mated with Fiber 11, etc. For these cables to preform properly, one of the cassettes would need to be inverted internally. This method requires two different cassettes with special labeling to identify which one is flipped. This circuit is completed with using straight patch cords at the beginning and end of the link.*Note- method B is not compatible with our standard QuickTrex cassettes
Method C is very similar to Method A, with the main difference being the flipping of the patch cords in the link. This method uses key up key down, and the polarity flip takes place within the cable itself. Each adjacent pairs of fiber at one end are flipped at the other end. So Fiber 1 and Fiber 2 becomes Fiber 2 and Fiber 1 at the other end, and so on. This circuit is completed by using straight patch cords at the beginning and end of the link.
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NOTE: MTP® is a Registered Trademark of US Conec Ltd. Clearcurve® is a Registered Trademark of Corning Corp.