2: Installation
3. Select the COM port that NIR Spectrometer is connected to in the Serial Port drop-down menu.
See Chapter 3:
Troubleshooting for information on identifying serial ports.
4. Select the NIR Spectrometer’s operating speed from the Baud Rate drop-down menu
(115,200 baud is recommended).
5. Specify the pixel resolution (from 1 to 500) in the Pixel Resolution box. This value specifies that
every nth pixel of the spectrometer will transmit from the NIR Spectrometer to the PC.
Note
You can sacrifice pixel resolution to gain speed. The transfer of one complete spectra
requires ~0.3 seconds at 115,200 baud.
6. Enable the Compress Data function to minimize the amount of data transferred over the RS-232
connection. The transmission of spectral data over the serial port is a relatively slow process.
Enabling this function ensures that the NIR Spectrometer compresses every scan that it transmits.
This greatly increases the data transfer speed of the NIR Spectrometer.
7. Click the OK button to complete the setup.
The spectrometer should now be able to acquire data and respond to light. Exit and restart OOIBase32 to
save configuration data to disk.
Spectrometer Configuration Screen
The Spectrometer Configuration screen prompts you to configure specific channel-level spectrometer
information, if necessary.
►
Procedure
1. Select Spectrometer | Configure from the menu and set system parameters.
2. Select the Wavelength Calibration tab. If you have connected your spectrometer to the PC’s
USB port, OOIBase32 pre-fills the coefficients for the NIR Spectrometer from information on a
memory chip in the spectrometer. Otherwise, you must manually type the coefficients as they are
printed on the Wavelength Calibration Data Sheet that accompanied your spectrometer.
3. Verify that the calibration coefficients match the coefficients from the Wavelength Calibration
Data Sheet. If necessary, modify these values using the USB Programmer utility.
4. Additionally, ensure that you select both the Master and Channel Enabled boxes.
5. In the A/D Interface tab, enter the same values as in the Configure Hardware screen.
OOIBase32 stores this information for future use once you close the program.
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