Series 2280 Precision Measurement DC Power Supplies Reference Manual Section 2: General operation077085501 / February 2015 2-43LAN communicationThe Series 2280 includes one Model CA-180-3A cable (LAN crossover cable for LANcommunication). However, you can use any standard LAN crossover cable (RJ-45, male-to-male) orstraight-through cable to connect your equipment. The instrument automatically senses which cableyou have connected.The following figure shows the location of the LAN connection on the rear panel of the instrument.Connect the LAN cable between this connection and the LAN connector on the computer.Figure 39: Series 2280 LAN connectionYou can connect the instrument to the LAN in a one-to-one, one-to-many, two network card, orenterprise configuration, as described in the following topics.One-to-one connectionWith most instruments, a one-to-one connection is done only when you are connecting a singleinstrument to a single network interface card.A one-to-one connection using a network crossover cable connection is similar to a typical RS-232hookup using a null modem cable. The crossover cable has its receive (RX) and transmit (TX) linescrossed to allow the receive line input to be connected to the transmit line output on the networkinterfaces.Figure 40: One-to-one connection with a crossover cable