Ethernet Interface Connection And Setup - Anritsu Site Master S331L Scpi Programming Manual

1-3 Remote Operation Setup and Interface

Ethernet Interface Connection and Setup

The Site Master S331L fully supports the IEEE-802.3 standard. Most Site Master functions
(except power On/Off) can be controlled via an Ethernet connection to a PC that is connected
directly (with an Ethernet cross-over cable) or through a network.
Ethernet networking uses a bus or star topology in which all of the interfacing devices are
connected to a central cable called the bus, or are connected to a hub. Ethernet uses the
CSMA/CD access method to handle simultaneous transmissions over the bus. CSMA/CD
stands for Carrier Sense Multiple Access/Collision Detection. This standard enables network
devices to detect simultaneous data channel usage (called a collision) and provides for a
contention protocol. When a network device detects a collision, the CSMA/CD standard
dictates that the data is retransmitted after waiting a random amount of time. If a second
collision is detected, then the data are again retransmitted after waiting twice as long. This is
known as exponential back off.
The TCP/IP setup requires the following:
• USB-to-Ethernet Dongle: The S331L requires the use of an external USB-to-Ethernet
dongle, such as Anritsu part number 2000-1810-R, to enable TCP/IP communication.
• IP Address: Every computer/electronic device in a TCP/IP network requires an IP
address. An IP address has four numbers (each between 0 and 255) separated by
periods. For example: 128.111.122.42 is a valid IP address.
• Subnet Mask: The subnet mask distinguishes the portion of the IP address that is the
network ID from the portion that is the station ID. The subnet mask 255.255.0.0, when
applied to the IP address given above, would identify the network ID as 128.111 and
the station ID as 122.42. All stations in the same local area network should have the
same network ID, but different station IDs.
• Default Gateway: A TCP/IP network can have a gateway to communicate beyond the
LAN that is identified by the network ID. A gateway is a computer or electronic device
that is connected to two different networks and can move TCP/IP data from one
network to the other. A single LAN that is not connected to other LANs requires a
default gateway setting of 0.0.0.0. If you have a gateway, then the default gateway
would be set to the appropriate value of your gateway.
• Ethernet Address: An Ethernet address (also known as a MAC address) is a unique
48-bit value that identifies a network interface card to the rest of the network. Every
network card has a unique ethernet address permanently stored into its memory.
1-4 PN: 10580-00322 Rev. F
Chapter 1 — General Information
S331L PM