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800581-2.11 NeurOne System User Manual.doc
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Features
The emitted data is delivered at the sampling rate the measurement is running at regular
intervals. The chosen delivery rate (i.e. how often UDP datagrams are emitted) depends on
measurement configuration. User can request delivery rates of 100 Hz, 250 Hz, 500 Hz, 1
kHz, 2 kHz, 3 kHz, 4 kHz and 5 kHz. Data packets cannot be delivered at 1ms intervals if
measurement sampling rate is below 1 kHz.
NeurOne digital out Ethernet port will be assigned an IP address relative to the control
Ethernet port IP address. The control Ethernet port address is in turn determined by
connection to SyncBox:
Main unit
Control IP address
Digital Out IP address
Stand-alone
192.168.200.200
192.168.200.220
SyncBox master
192.168.200.101
192.168.200.121
SyncBox slave1
192.168.200.102
192.168.200.122
SyncBox slave2
192.168.200.103
192.168.200.123
...
SyncBox slave 9
192.168.200.110
192.168.200.130
Triggering information can be transmitted in packet or sample mode (or both). If packet
mode transmission is enabled digital out will emit Triggers packets. If sample mode
transmission is enabled digital out will emit an extra sample channel as the last channel in
Samples packet.
There is no ACK mechanism for digital output. NeurOne handles only a single type of packet
sent to its digital output interface (the Join packet). All other packets received by NeurOne
are discarded.
UDP datagram length is limited by Ethernet MTU (IP layer fragmentation isn’t supported).
Each packet has at most 1472 bytes.
Packet types
There are many kinds of packets that NeurOne can emit to digital out. The emission of most
of these can be enabled / disabled, depending on the actual needs of the user and the
capabilities of the system receiving digital out data.
