A system and method provides high speed variable attenuators. The process may utilize an all solution process or controlled environment for fabricating self-cleaning and waterproof coating that prevent wetting or staining of a substrate, or may utilize a controlled environment. The protector includes an accommodation part and a different path guide portion, the accommodation part having an extraction opening for extracting the wire harness to the interior of the door and accommodating the wire harness with a space enabling the wire harness to be redirected. A security officer or other source may input key configuration data to a graphic user interface template or other suitable mechanism to configure the security key manifest. In this way, a counter may be read, and its value, for the first thread, for example, provides a coherent meaning relative to a previous value for the same thread, despite any intervening thread switches. Several different stations of the loading arrangement are mutually coordinated and monitored by a control unit.