If you are running the ambeserver on the same device.
address = 127.0.0.1 ; IP address of AMBEServer
rxPort = 2460 ; Port of AMBEServer
address = /dev/ttyUSB0 ; Device of DV3000U on this machine
baud = 460800 ; Baud rate of the dongle (230400 or 460800)
serial = false ; Use serial=true for direct connect or serial=false for AMBEServer
I found that I needed the bottom three lines as well.