Simrad GO XSE Installation Manual page 60

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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 GO XSE 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 Echosounder 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 GO XSE. 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.
Ú Note:
Iperf and DHCP Probe are tools provided for diagnostic
purposes by users familiar with network terminology and
configuration. Navico is not the original developer of these
tools, and cannot provide support related to their use.
Internal Wireless
Select this option to enable or disable the internal wireless module.
Disabling wireless when not in use reduces the unit's power
consumption.
Software Setup | GO XSE Installation Manual