Network Setup; General; Sigma's Ip Address; Useful Built-In Features - Solid State Logic Sigma User Manual

4. Network Setup

G
eNerAL
Sigma communicates with your DAW over a standard Ethernet cable using the ipMIDI software driver to emulate a multi-
port MIDI interface. To ensure minimum latency ipMIDI uses multicast UDP rather than TCP/IP.
Routers that support high data transfer rates should be used. Some domestic routers have experienced problems, so
please check your router specification if problems occur.
Notes for Network Technicians:
Because ipMIDI uses multicast UDP packets, messages between one computer and Sigma will be received by all
other computers on the network potentially causing problems with other ipMIDI devices on your network. The UDP
packets can be blocked by using a firewall router and connecting the main network by the WAN connector. The firewall
can then be configured to allow all traffic apart from UDP ports 21928 through 21947 which are used by ipMIDI. Note
that it may be necessary to use a separate Ethernet switch in place of an integrated firewall router switch, as some
of these can not support the ihg data transfer rate required. The NetGear GS108 (an eight port switch) has been used
successfully at SSL Begbroke.
You can purchase a pre-configured LAN Integration Network Switch from the SSL web store. See setup example 3
for more details.

Sigma's IP Address

By default, Sigma uses a fixed IP address of 192.168.1.201/sigmaweb. Alternatively, Sigma can be set to use a dynamically
assigned (DHCP) address if your installation precludes a simple direct connection. Switching between the two options is
done in Sigma's SeTTINGS page in your web browser. See 'Connecting to and Using Sigma' chapter for more information.

Useful built-In Features

reverting from DHCP to Fixed IP
If a situation arises where Sigma is set to DHCP but you are unable to connect via a DHCP, take the following steps:
1) Power Sigma off
2) Set your computer network settings to be a fixed IP address
3) Power Sigma on
This will force Sigma into reverting to its fixed IP address.
How to check the current IP address of Sigma
Once connected to Sigma, it is possible to change the fixed IP address as desired. In a situation where
you forget what the fixed IP address is set to, press and hold the first USer button on the front panel
and whilst keeping this held down, press the second USer button. Sigma will use the front panel LEDs
to readout the IP address it is set to.
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