The pinger plus uses the powerful ping function and tests for network availability double ip addresses transmission errors and response times a whole range of ip addresses can be pinged to find free ip addresses the pinger plus as dhcp client also checks the functionality of the dhcp server it is the first handheld tester that also carries out a gigabit link test connected to a hub switch or nic the pinger plus displays the speed 101001000 mbps and duplex mode of the hardware