User manual

RIGOL Chapter 2 Front Panel Operations
2-42 DP800A User’s Guide
DHCP to select “On” or “Off” to enable or disable the DHCP configuration
mode. By default, the DHCP configuration mode is “On”.
 Auto IP: in this mode, the instrument acquires the IP address from
169.254.0.1 to 169.254.255.254 and subnet mask 255.255.0.0 according to
the current network configuration automatically. Press Auto IP to select
“On” or “Off” to enable or disable the auto IP configuration mode. By
default, the auto IP configuration mode is “On”.
Note: When the DHCP and auto IP configuration modes are enabled at the
same time, the instrument uses the DHCP configuration mode. Therefore,
to use the auto IP configuration mode, DHCP should be set to “Off”.
 Manual IP: in this mode, users define the network parameters (such as
the IP address). Press Manual IP to select “On” or “Off” to enable or
disable the manual IP configuration mode. By default, the manual IP
configuration mode is “Off”.
Note: When all the three configuration modes are set to “On”, the priority
order of parameter configuration is “DHCP”, “Auto IP” and “Manual IP”.
Therefore, to use the manual IP configuration mode, DHCP and Auto IP
should be set to “Off”.
Tip
 When all the three configuration modes are set to “On”, the priority order of
parameter configuration is “DHCP”, “Auto IP” and “Manual IP”.
 The three IP configuration modes cannot all be set to “Off” at the same time.
3. MAC Address
The MAC (Media Access Control) address is also called hardware address and is
used to define the location of the network device. For a power supply, the MAC
address is unique and is usually used to recognize the instrument when
assigning IP address for the instrument. The MAC address (48 bits, namely 6
bytes) is usually expressed in hexadecimal form, for example,
00-2A-A0-AA-E0-56.
4. VISA Descriptor
VISA (Virtual Instrument Software Architecture) is an advanced application
programming interface developed by NI (National Instrument) and is used to
communicate with various instrument buses. It uses the same method to
communicate with the instrument regardless of the type of the instrument
interface (GPIB, USB, LAN/Ethernet or RS232). The instrument communicating
with it via the GPIB, USB, LAN/Ethernet or RS232 interface is called “Resource”.
VISA descriptor is the resource name and describes the accurate name and
location of the VISA resource. If the LAN interface is currently used to
communicate with the instrument, the VISA descriptor
is :TCPIP0::172.16.2.13::INSTR.