Integrator's Guide
10
© 2017 Nortek AS
command and data record formats for the interfaces are the same as for the serial port.
Commands available in measurement mode should be preceded by the command BBPWAKEUP.
This ensures that the BBP is ready to process the command when it is received (see
instrument state over Ethernet
). In measurement mode, another BBPWAKEUP must be sent when
more than 2 seconds has elapsed since the previous command.
If uncertain of the active mode it is good practice to send BBPWAKEUP before sending
or
3.3.1
Telnet Connection
The telnet interface (TCP/IP port 9000) is used for user interaction with the instrument. This
dedicated port can be used for entering commands and getting human readable responses
(ASCII). The supported command set is available in the
client can be used to connect into the instrument using the command line telnet ip_address 9000.
You will get prompted for a username (nortek) and password (hit Enter if password protection
hasn’t been enabled via the Web interface).
Signature Username: nortek
Password:
Nortek Signature Command Interface
The interface is very similar to the direct serial interface over RS232/RS422 but some additions are
made to simplify the interfacing. Most notable is the ability to send a <break> to the Doppler
processor just by using
Ctrl-C
(ASCII 0x03). The internal application takes care of waking up the
Doppler DSP and timing the delivery of the break string.
The telnet server is not configured to echo characters, so users wishing to see and/or edit
commands before sending them to the instrument should enable local echo and local line
editing. If those features are desired, a telnet client capable of supporting local echo and local
line editing must be used (e.g. PuTTY).
Port 9000 is dedicated for ASCII only communication whereas the ports described in the next
section provide the complete set of data, including binary output of the measurements. A telnet
client should
not
be used to access these ports. Read more about this in the next section.
To terminate the telnet connection, enter
Ctrl-X
(ASCII 0x18).
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