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

4. Network Setup

G
eNerAL
Sigma δelta communicates with its Remote app and the δelta-Control plugin over a standard TCP/IP Ethernet connection.
The ipMIDI software driver uses multicast UDP, rather than TCP/IP, to ensure minimum latency. 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. See following note.
Because ipMIDI and δelta Control use multicast UDP packets, messages between one computer and Sigma will be
Notes for Network Technicians:
received by all other computers on the network, potentially causing problems with other ipMIDI devices / Sigma
units on your network. The UDP packets can be blocked by using a firewall router and connecting the main network
ipMIDI and δelta Control.
by the WAN connector. The firewall can then be configured to allow all traffic apart from the UDP ports required for
Firewall router settings: Block multicast addresses 255.0.0.37 and 255.0.0.38
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 high data transfer rate required. The NetGear GS108 (an eight port switch) has been
used successfully at SSL Begbroke.

Sigma's IP Address

By default, Sigma uses a fixed IP address of 192.168.1.201. 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 the app.

Useful Built-In Features

reverting from DHCP to Fixed IP
If a situation arises where Sigma δelta 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 δelta
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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