Comprehensive Manual44
© 2018 Nortek AS
The Vectrino Profiler power lines are diode protected, hence, you do not have to worry about wiring
the power backwards. If you do, it will not damage your instrument.
USB-Serial Converter
The USB-Serial converter is a high-speed device which supports up to a 1.25 MBaud transmission
rate over shorter distances. It is important that the most up to date version of the drivers be installed
with the converter. Driver updates are available from the FTDI web site at http://www.ftdichip.com/
Drivers/VCP.htm.
At high sampling rates (above 60 Hz), the driver parameters need to be tuned to provide an adequate
display rate for the application software. Without this tuning, higher sampling rates will appear to be
slow and bursty.
Open Windows Device Manager, expand Ports (Com and LPT), right-click on the appropriate serial
port and select Properties.
With the properties in view, click on the Port Settings tab. The baud rate displayed (9600 in the
menu shown) doesn’t have to be changed. The application will automatically set the baud rate of
both the USB-serial port and the instrument to the requested rate in the connection menu so this
driver entry can be left unchanged.
Click on the Advanced button
Change the Latency Timer to 5 msec. Faster systems should be able to use 2 msec.
Remove and re-insert the USB connector to activate the parameters.
While having a lower latency timer is better, it can result in significantly higher CPU usage on slower
machines. If the data transfer from the instrument has degraded noticeably with the new latency
timer, increase it to a larger number. Ideally, this number should not be larger than 8 ms or the data
display refresh will start becoming choppy at higher sampling rates. The software will warn the user if
it detects that the latency timer has not been correctly set.
2.3.2 Instrument software
Find the software on the memory stick that came with the instrument, or on the web site. To install
the software, double-click on Vectrino Profiler_setup.exe. This will copy the appropriate files to the
installation directory and create a shortcut to the application on the desktop.
The Vectrino Profiler acquisition software on the included memory stick requires Java virtual machine
(JVM) to operated. The software has been tested with the sun JVM available from http://www.java.
com/ but is also known to be fully functional with other JVMs.
Double clicking on the software shortcut will start it. The application initially displays an empty
instrument panel. To connect to an instrument, select Communication: Connect and choose the
desired instrument. This will bring up a connection dialog box for the instrument. Then:
Select the appropriate serial port and port speed (baud rate) and press Apply.
A baud rate of 937500 is recommended for best performance of the Vectrino Profiler
An instrument name can be specified if desired. This will help to differentiate between instruments
when several are used in the same experiment.
Setting the serial port to SIM will simulate an instrument connected to the serial port.
After the instrument has been connected, an instrument display panel is created showing the
associated data displays for the current configuration as well as the action buttons for the
instrument. In addition to the action buttons, a status display is shown on the upper right of the
panel. This shows the instrument name and type and four status lights used to display status
information while collecting data (run status, collection status, connection status, and instrument
status). Hovering the mouse over each status light will display more detailed information.
For more detailed information using the software, check the SW User Guide, available under "Help".
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