SC-USB USB to CS I/O Opto-isolated Interface
16
Scientific became aware that many PCs have poor filtering of emissions from their
USB ports.
These emissions become apparent when a cable is plugged into the USB port, as
the cable acts as an antenna. If any such PC emissions (coming from the SC-USB
cable) cause problems with other equipment, you may be able to reduce such noise
by adding a clip-on ferrite choke to the SC-USB cable. Position the choke on the
cable close to the USB connector. The size of ferrite is dependent on the level and
frequency of noise emitted by the PC, and so needs to be selected by trial and
error. If in doubt, seek advice from the PC manufacturer.
5.4 Use with the Device Configurator Program
The SC-USB can be used with the device configurator program to change settings
in most dataloggers that have a CS I/O port. It can be used to download operating
systems to the CR510, CR10X and 23X dataloggers using this tool too, but has to
be set to a fixed baud rate and comms mode changed (see above). It cannot be
used to load operating systems into the CR800, CR1000 or CR3000 dataloggers
using the “Send OS” option of the Device Configurator as the dataloggers only
support the low-level OS upload via the RS232 port. However, you can load an
operating system into a datalogger using the option to load a program into the
datalogger (under Logger Control) and changing the file type to operating system.
(You can load the OS with other Campbell Scientific programs too using the
program load options.) This technique does not reset as many settings as the
lower level “Send OS” option.
5.5 Use with the DSP4
It is possible to use the SC-USB to communicate with most dataloggers when they
are used with a DSP4 Heads-Up Display. As with other means of communication,
display of data on the DSP4 is suspended during communication.
For the CR5000 it is currently
not
possible to run any program that
sends data to the DSP4 and then communicate with the SC-USB.
This is because the CR5000 reserves the CS I/O port solely for use
by the DSP4. This may change in later revisions of the operating
system – contact Campbell Scientific for further information.
NOTE
