Keysight Technologies N8241A, User Manual

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Chapter 6 113
Troubleshooting
Initializing the LAN Configuration
Initializing the LAN Configuration
On the front of the instrument, near the power switch, is a recessed button labeled
“RST”. This button enables you to put the LAN configuration of the instrument into
a known state. This is useful if the LAN address gets set to an unknown value.
When you press this button (a straightened paper clip will do the job) the following
settings are made and the system reboots:
• IP Address is set to 192.168.EE.FF, where EE and FF are the last two parts of
the MAC address (AA.BB.CC.DD.EE.FF). This is designed to prevent multiple
instruments from using the same default IP address.
• Subnet Mask is set to 255.255.0.0
• DHCP is set to ON
• Auto IP i set to ON
• The instrument hostname is set to A-N82XXA-NNNNN,
where N82XXA is the instrument model number (such as N8241A) and
NNNNN represents the last five digits of the instrument serial number.
If the instrument is in an environment with a DHCP server, it is assigned an IP
address through DHCP. The IP address can be found by using the instrument name
as the URL. Generally, a web browser will find the instrument.
Without the DHCP, the instrument will use Auto IP and acquire a 169.254.*.*
address. If no DHCP is present, but the instrument is set to use DHCP (the default),
the instrument will wait two minutes for its DHCP to time out. In this case, there is a
time delay of approximately three minutes between when the instrument is powered
on and when it is usable.