Nortek Signature Series User Manual

Interfaces 11
© 2017 Nortek AS
3.3.2 Raw Connections
A port can be understood as a address point between two communicating parts. When first
connecting to a data listening port, the string "\r\nNortek name Data Interface\r\n" ( name is
replaced by the instrument host name) is sent to identify the instrument that has responded to
the connection request. TCP ports 9001, 9002 and 9004 are assigned for the following uses:
Port 9001 is used for machine driven control. This port requires username/password. The serial
port data is translated directly into TCP/ IP over Ethernet. Binary data generated in
measurement mode is visible on this port. Standard streaming record delineation techniques
must be used in order to make sure that the received data is properly synchronized for
decoding. A break can be sent by sending the string K1W%!Q<CR><LF> to the instrument or a
Ctrl-C character (ASCII 0x03) (Ctrl-C has to be sent on its own and not embedded in any
command). The internal application takes care of the appropriate timing of the break sent over
the internal serial port. This port require username / password authentication. Refer to
previous section for example. The password entry is ignored if password authentication, as
shown in the web page configuration, is disabled (so any input, including an empty password, is
accepted). The command and data record formats for the interfaces are the same as for the
serial port.
Port 9002 is a data only channel which will output all data that is configured for serial output.
This can, for example, be used by display only software while configuration is done by another
application.
Port 9004 outputs ASCII data (no binary) that is configured for serial output.
A telnet client should not be used to access these ports. Telnet incorporates its own binary
protocol which is neither interpreted nor sent via the raw connection. Using a telnet client on
these ports will result in extraneous characters being sent and certain binary characters being
interpreted by the client.
3.3.3 FTP
The internal data recorder is accessed over Ethernet using a standard FTP (File Transfer Protocol)
client. Together with the various telemetry options, the FTP data download serves as a simple
way to download measured data at regular intervals if true real time operation is not required.
Only the telemetry file can be deleted using FTP.
When an FTP connection is active, the internal state of the machine is changed so that commands
are no longer processed (and an error is returned when commands are entered). Terminating the
FTP connection or sending a BREAK followed by the CO command will switch the instrument back
to the mode it was in before the FTP session began. If a break command is sent while an FTP
transaction is in progress, the FTP connection will be forcibly terminated.
If an FTP connection is done when the instrument is in measurement mode (see Figure 1), the FTP
connection is made through data retrieval mode. When the FTP connection is terminated, the
instrument will then return to measurement mode. If there is no data transferred or FTP

Nortek Signature Series Specifications

General

Type	Acoustic Doppler Current Profiler (ADCP)
Operating Temperature	-5°C to +45°C
Storage Temperature	-20°C to +60°C
Temperature Sensor	Integrated
Pressure Sensor	Integrated
Compass and Tilt Sensor	Integrated
Data Storage	Internal memory
Communication Interfaces	Ethernet, RS-232
Depth Rating	Up to 6000 meters (depending on model)
Data Output	ASCII, binary
Beam Angle	Varies by model
Velocity Accuracy	±0.5% of measured velocity ±1 mm/s