The BK Precision TL983PKIT 3-Phase Kit for 9830B Series with Adapters and RJ435 Cables enables three of the same models of the 9830B Series to be connected in a mast-slave configuration to provide three-phase power. The TL983P adapter connects to the Digital I/O connector on the rear of the AC source. Standard RJ45 communication cables connect each adapter to route the 3-phase synchronization signal from the master to the slave units.