Instrument Overview 2-10 Settings Menu
MS2090A UG PN: 10580-00444 Rev. U 2-29
Sound Settings
The SOUND settings allow you to adjust the SYSTEM VOLUME or MUTE ALL of the instrument sounds. The
system volume may affect other volume settings found in various setup menus.
Network Settings
The MS2090A uses Ethernet or WLAN (Wi-Fi) to communicate remotely with a controller. Most instrument
functions (except power on/off) can be controlled via a network connection to a PC connected directly (with an
Ethernet cross-over cable or Wi-Fi peer-to-peer) or through a network. The instrument software supports the
TCP/IP raw socket network protocol.
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 Carrier Sense Multiple Access/Collision
Detection (CSMA/CD) access method to handle simultaneous transmissions over the bus. 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, the data is again
retransmitted after waiting twice as long. This is known as exponential back off.
Wi-Fi uses a similar star topology in which all of the interfacing devices are connected to an access point. Wi-Fi
uses Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA) access method to handle simultaneous
transmissions. CSMA/CA doesn’t detect collisions but rather avoids them through the use of a control message.
If the control message collides with another control message from another node, it means that the medium is
not available for transmission and the back-off algorithm is applied before attempting another transmission.
The TCP/IP setup requires the following:
• IP Address: Every computer and electronic device in a TCP/IP network requires an IP address. An IPv4
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 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 another
LAN 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, or Media Access Control (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 in its memory.
• Remote programming and operation between the instrument and remote program is accomplished via a
TCP/IP raw socket connection to port 9001. The remote program must establish a TCP/IP raw socket
connection at port 9001 to the MS2090A.
Figure 2-31. Sound Settings
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