For both the "D" and "E" options, serial communication are via a 4- or 6-conductor phone cable that plugs into a standard RJ-11 phone jack on the rear of the serial interface board Both RS232 and RS485 interfaces are isolated from meter and power grounds.
The information transmitted via RS232 or RS485 includes the latest signal value (filtered or unfiltered), peak signal value, and alarm values and status. Using the optional RS232 or RS485 interface, a 2000 Series meter can serve as a Remote Display for an external device or for another 2000 instrument.