The open-short-load (OSL) holders are included for your convenience. The OSL holders allow you to keep all of the calibration devices in two handy assemblies. Load each OSL holder with calibration devices of the same connector sex so that you can perform a calibration with just one assembly.
Like the other devices in the kit, the adapters are built to very tight tolerances to provide
good broadband performance. The adapters utilize a dual-beaded connector structure to
ensure stable, repeatable connections. The beads are designed to minimize return loss and
are separated far enough so that interaction between the beads is minimized.
The adapters are designed so that their nominal electrical lengths are the same, which
allows them to be used in calibration procedures for non-insertable devices.

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