NORTEK VECTRINO VELOCIMETER
User Guide
35
Rev. C • 10.2004
problems, try such things as moving the cable away from other installations,
reducing the baud rate and do not hesitate to try another PC.
Changing the Baud Rate
You may specify two separate baud rates for the Vectrino. The primary baud
rate setting applies to normal communication and data transfer. You can also
set a second, separate baud rate for data download and fi rm ware upgrades (the
Upgrade baud rate). A higher baud rate speeds up large fi le transfers and is ap-
propriate when you have a short serial cable and a relatively noise-free environ-
ment.
Baud rate Max sampling rate
300 1 Hz
600 2 Hz
1200 4 Hz
2400 8Hz
4800 16 Hz
9600 32 Hz
19200 64 Hz
38400 128 Hz
57600 200 Hz
Table showing the highest
permissible sampling rate for a
given baud rate.
Given the amount of data transferred, there are limitations on the maximum
sampling rate permissible for a given baud rate. The sidebar table applies.
To change the baud rate and make it permanent, do the following:
1
Set up the Vectrino and connect it to your computer.
2 Set the baud rate in Communication > Serial Port to the baud rate you prefer.
Press Stop Data Collection. The software will change the baud rate and make
it permanent.
If you remove power and reapply it, the Vectrino will re-awake with the new
baud rate.
Note! If data download is interrupted, the Vectrino may be left with a baud
rate setting other than the one used for nor mal communication. When the
software tries to establish communication in such cases, it may spend a few
moments searching for the correct baud rate to use.
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