17
4.5.4 Software
The ILT1700.VI driver is a sample LabVIEW
®
program
that allows the end user to perform data acquisition with an
ILT1700 Research Radiometer. The VI will run in
LabVIEW
®
8.2 Full Development System and offers the
ability to record readings in either DC, or integrate mode as
well as to calculate the percentage of a baseline reading . The
data is saved in a tab -delimited text file that can be opened
with Excel. Users with LabVIEW
®
8.2 Full Development
System can customize the VI to meet their unique application
requirements.
We also offer an ILT1700.VI program for customers who
do not own a copy of LabVIEW
®
Full Development System.
The application is a fully compiled, run -time version of the VI
driver. Users can run the program, obtain data from an
ILT1700 meter and save it into a file. The program is
available for Windows 2000, XP and VISTA.
After you install your COM PORT drivers (4.5.1) you will
need to install the complim entary Virtual ILT1700-USB
program. (Full installation and operation instructions are
provided in the file named ILT1700_README on the CD.)
This software program provides the maximum flexibility and
functionality available without sacrificing ease of use. This VI
executable displays incoming data in real time and allows the
user to save data to a text file for importation into a
spreadsheet program.
4.3
NEW
USB and RS232
The current model ILT1700 now has improved features for
computer connection. T he first is the inclusion of a new USB
2.0 compatible (backwards compatible with USB 1.1) output
port for sending measurement data to any USB equipped PC.
The second upgrade is the replacement of the older 25 -pin D-
sub, RS232 serial output connector with a more commonly
available 9-pin D-sub connector. Note: The 0-1V output jack
has been eliminated on the rear panel, but 0-1V output is still
available using the accessory I/O connector, refer to section
6.5 for further information)
4.3.1 Setting up a Com port
If you intend to use the new USB port please note the
following: You must install a USB driver prior to using the
USB port. You should have received a CD with your
purchase. If you do not have the CD you will need to contact
ILT to obtain a copy.
Upon plugging the ILT1700 into a USB port on a PC, the
computer’s operating system will detect the instrument and
will need to be pointed to the directory where you have
extracted the driver .zip file in order to properly install the
driver. The installer will install a virtual Com port for the new
device. Please make a note of which com port you have
selected as you will need thi s information when running the
LabVIEW®
drivers. _____________
4.5.2 Serial output
Serial output information for both the RS232 and USB port is
as follows:
Baud rate: 4800
Start bits:
1
Data bits: 8
Stop bits:
1
Parity:
None
Hardware: None or Hardware
4.5.3 PC cable connection
IL1700 to PC cable: DCE to DCE null modem male to
female:
IL1700 end (DB9 Male)
PC Cable End (DB9 Female)
Pin 3 Transmit data-------------------------Pin 2 Receive data
Pin 5 System Ground-----------------------Pin 5 System ground
Pin 7 RTS------------------------------------ Pin 8 CTS
Pin 4 DTR ----------------------------------Pin 6 DSR
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