The highly configuable modules support N+1 redundancy. You can protect N Elements (Transmitters and/or Receivers and/or Fibers) by adding only one extra Element using multiple redundancy switching modules. The automatic recovery enables high reliability linkage, for example from a Command bunker to multiple Antennas. Since the switching configuation is complex, special attention must be made to proper design. Optical Zonu offers special engineering support in the design phase of a redundant system.
The J3U platform is a 19” 3RU chassis that accommodates 16 pluggable, hot swappable fiber optic RF signal tansport and redundancy switching modules. RF (and optical) diversity/redundancy modules make up the basic building blocks of varied system level redundant architectures. The standard RF interface is 50Ω SMA (other impedance/connector options may be available, contact Optical Zonu).
Basic building blocks include 1:2 splitters (DRTS), 2:1 switches (DRRW), and 2:2 switches (DRDC). A DRTS (1:2 splitter) on the transmitter side may be paired with a DRRW (2:1 switch) on the receiver side to configue a 1+1 redundant fiberoptic link. DRDC (2:2 switch) modules may be used together with optical switching modules to configue N+1 redundancy architectures. In N+1 architectures, the transmitter and receiver ends of the fiber lins are isolated from each other and act independently in the event of a module failure. Monitors and alarms in the fiber optic tansmitter and receiver modules drive the autonomous switching within the diversity modules. Switches may also be commanded to certain states via the Optical Zonu M&C system. The RF performance of the fiberoptic links is maintained when incorporating the RF switching. RF redundancy modules within the J3U platform may be monitored and controlled via SSH, Web UI, OZC GUI, and SNMP v2 and v3.
