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Features and Functions 2
34980A User’s Guide 77
DHCP
DHCP (Dynamic Host Configuration Protocol) is a protocol for
automatically assigning a dynamic IP address to a device on a network.
DHCP is typically the easiest way to configure your instrument for remote
communication using the LAN interface.
If you change the DHCP setting, you must cycle power on the 34980A to
activate the new setting.
• When DHCP is enabled (factory setting), the instrument will try to
obtain an IP address from a DHCP server. If a DHCP server is found,
it will assign a dynamic IP address, Subnet Mask, and Default Gateway
to the instrument.
• When DHCP is disabled or unavailable, the instrument will use the
static IP address, Subnet Mask, and Default Gateway during power-on.
• If a DHCP LAN address is not assigned by a DHCP server, then a static
IP will be assumed after approximately 2 minutes.
• The DHCP setting is stored in non- volatile memory, and does not
change when power has been off, after a Factory Reset (
*RST
command), or after an Instrument Preset (SYSTem:PRESet command).
Front Panel Operation:
Utility > REMOTE I/O > LAN > LAN SETTINGS > MODIFY > DHCP
Remote Interface Operation:
SYSTem:COMMunicate:LAN:DHCP {OFF|ON}
IP Address
An Internet Protocol (IP) Address is required for all IP and TCP/IP
communications with the instrument. If DHCP is enabled (factory setting),
the specified static IP address is not used. However, if the DHCP server
fails to assign a valid IP address, the currently configured static IP
address will be used.
If you change the IP address, you must cycle power on the 34980A to
activate the new setting.
• The default IP Address for the 34980A is “169.254.9.80”.