The Iris-EXT-03-LHS (upstream) is a simple spacer board to separate two Iris modules in a chain at 90-degrees while connecting their MIMO bus at the indicated up/downstream location.
In general, this 90-degree spacer is used to locate an Iris-EXT-01-SFP adapter behind a chain of Iris-030 Software Defined Radio (SDR) modules within a tight enclosure.
