The Model SC1000 is an RF test system con- troller designed to facilitate the concurrent use of up to three signal generators, four power amplifiers, and four different RF loads for broadband RF testing. This device allows mul- tiple pieces of field generation equipment to be integrated into one test set-up, alleviating the need to constantly change cables due to the frequency limitations of the individual pieces. The export classification for this equipment is EAR99. These commodities, technology or software are controlled for export in accord- ance with the U.S. Export Administration Regu- lations. Diversion contrary to U.S. law is pro- hibited. The Model SC1000 offers IEEE-488, RS-232, and manual control of the RF signal routing, and provides front panel indication via a 4 line vacuum fluorescent display. System interlock capability is also provided by sensing a switch closure. If the closure is not detected, the input signal is interrupted. The input signal is also interrupted during signal re-routing in order to assure cold switching of amplifiers and loads. Additionally, a switchable positive 12VDC sig- nal and several open collector outputs are supplied. These signals can be used to pro- vide external switch capability.