Features and Functions
3
Keysight 34980A Mainframe User’s Guide
113
DNS Server
The Domain Name Service (DNS) is an Internet service that translates Domain
names into IP addresses. Contact your network administrator to determine if DNS
is being used and for the correct address.
If you change the DNS address, you must cycle power on the 34980A to activate
the new setting.
– The default DNS Address for the 34980A is “0.0.0.0”.
– Dot-notation addresses (“nnn.nnn.nnn.nnn” where “nnn” is a byte value) must
be expressed with care, as most web software on the computer will interpret
byte values with leading zeros as octal numbers. For example,
“255.255.020.011” is actually equivalent to decimal “255.255.16.9” not
“255.255.20.11” because “.020” is interpreted as “16” expressed in octal, and
“.011” as “9”. To avoid confusion, use only decimal expressions of byte values
(0 to 255), with no leading zeros.
For example, the 34980A assumes that all dot-notation addresses are
expressed as decimal byte values and strips all leading zeros from these byte
values. Thus, attempting to set an IP address of “255.255.020.011” will
become “255.255.20.11” (a purely decimal expression). Be sure to enter the
exact expression, “255.255.20.11”, in your computer web software to address
the instrument. Do not use “255.255.020.011” — the computer will interpret
this address differently due to the leading zeros.
– The DNS address 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 OFF >
AUTO IP OFF > . . . DNS SERVER
Remote Interface Operation:
SYSTem:COMMunicate:LAN:DNS "<
address
>"
