Lowrance HDS Carbon Quick Start Manual page 273

Advanced
Tools are available within the software to assist in fault-finding and
setting up the wireless network.
Iperf
Iperf is a commonly used network performance tool. It is provided
for testing wireless network performance around the vessel so weak
spots or problem areas can be identified. The application must be
installed on and run from a tablet device.
The HDS Carbon must be running Iperf server before initiating the
test from the tablet. On exiting the page, Iperf automatically stops
running.
DHCP Probe
The wireless module contains a DHCP server that allocates IP
addresses for all the MFDs, and Sonar in a network. If integrating
with other devices, such as a 3G modem or satellite phone, other
devices in the network may also be acting as DHCP servers. To make
it easy to find all DHCP servers on a network, dhcp_probe may be
run from the HDS Carbon. Only one DHCP device may be
operational on the same network at a time. If a second device is
found, turn off its DHCP feature if possible. Refer to the device's own
instructions for further assistance.
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Software Setup | HDS Carbon Installation Manual