ADC500 ISA-bus A/D Converter
The ADC500 ISA-BUS A/D CONVERTER is a 12-bit, 8-channel ISA-bus analog-to-digital converter card that
connects our spectrometers to desktop PCs. This single-ended, half-length card fits into an ISA slot in a desktop
PC, and has a 500 kHz sampling frequency. The following are directions for installing your ADC500. Because
A/D converter installation goes hand-in-hand with software installation, you will find directions for installing
OOIBase32 Spectrometer Operating Software included in this section as well.
Each device in or connected to your computer is assigned specific settings; it’s similar to giving each device its
own name so that your computer will know what to call and how to recognize the device. In order for your
ADC500 to work as a device in your computer, it has to be assigned a Base Address setting and an IRQ setting.
The default settings for each are:
Base Address (I/O Range): 768 decimal (300 hexadecimal)
IRQ (Interrupt Request): 07
These default values are set on the A/D converter. There are dip switches on the A/D board and their positions
determine the values. These default values are set in the operating software as well. Most of the time, these default
settings will work with your computer. However, if you have many devices installed in your computer, you may
have a conflict; other devices may be using these settings. If there is a conflict with another device in your
computer, you must change the positions of the switches on the A/D board and change the values in the software.
For the ADC500, the Base Address is set via the bank of 6 switches labeled SW1 on the A/D board and the IRQ is
set via the bank of 4 switches labeled SW2 on the A/D board. To first check your computer to see which settings
are available, see the section below.
Find Available Base Address and IRQ Settings
1. Go to Start | Settings | Control Panel and double-click on the System icon.
2. Choose the Device Manager tab and double-click on “Computer” at the top of the list.
3. Under View Resources, find available settings -- numbers unassigned to hardware. Note these available
settings for both the Interrupt request (IRQ) and the Input/output (Base Address). When you first run
OOIBase32, you must enter these values in the “Configure Hardware” dialog box. (Remember that
Input/output settings are expressed in hexadecimal.)
!!
For most computers, the default settings work well. In the picture above left, it appears that the Printer occupies
IRQ 07, but for most computers, our A/D converters can share the IRQ 07 setting with a printer and conflicts
will not arise. All computers have multiple Base Address (Input/output) settings from which to choose.
Operating Instructions: ADC500 (for Windows 95/98 Users)
-1-
Install the ADC500
1. Turn off the computer and remove the computer cover.
2. Ground yourself to the computer chassis or power supply and remove the A/D card from its static-shielded bag.
3. If necessary, change the position of the switches on the A/D board. Position the switches to match the available
settings you found in the previous section -- numbers not being used by other hardware devices. See pages 5
and 6 for switch setting positions.
4. Find an open ISA-bus slot and remove the slot protector.
5. Insert the A/D card into an available expansion slot on the motherboard by gently rocking the card into the slot.
Make sure the card is fully seated in the motherboard before screwing the tab on the A/D card to the computer.
Do not bend the card or move it from side to side once it is seated in the slot.
6. Attach the D37 end of the cable to the card and the D25 end to the spectrometer. Reinstall the cover.
Install OOIBase32
Before installing OOIBase32, make sure that no other applications are running.
1. Execute Setup.exe.
2. At the “Welcome” dialog box, click Next>.
3. At the “Destination Location” dialog box, accept the default or choose Browse to pick a directory. Click Next>.
4. At the “Backup Replaced Files” dialog box, select either Yes or No. We recommend selecting Yes. If you select
Yes, accept the default or choose Browse to pick a destination directory. Click Next>.
5. Select a Program Manager Group. Click Next>. At the “Start Installation” dialog box, click Next>.
6. Follow all prompts regarding the Spectrometer Configuration diskette that came with your system. For more on
the Spectrometer Configuration diskette, see the
Note below. (If you downloaded OOIBase32 from the Ocean
Optics web site, you will not have this diskette. Select No when first asked about the diskette.)
7. At the “Installation Complete” dialog box, choose Finish>.
8. Restart your computer when the installation is complete.
Note:
In your spectrometer shipment box, you received a Wavelength Calibration Data Sheet wrapped around a
floppy diskette. The Wavelength Calibration Data Sheet and the spectrometer configuration file on the floppy
diskette contain the same information, which is unique to your spectrometer. When you install OOIBase32, you
are prompted to insert this diskette into your computer so that this data is installed with the software. However,
if the diskette is ever lost, or if you downloaded OOIBase32 from the our web site and did not receive a
diskette, you can use the data on the Wavelength Calibration Data Sheet to enter into OOIBase32 fields.
Run OOIBase32
After you restart your computer, navigate to the OOIBase32 icon and select it. The first time you run OOIBase32
after installation, you must follow several prompts before you can begin taking measurements.
Operator and Serial Number Dialog Box
First, a prompt to enter a user name and serial number appears. Certain data files will include this information in the
header. (If, at a later date, you wish to change the operator name and serial number, select Edit | Settings from the
menu and then choose the Registration tab.) Click OK.
Default Spectrometer Configuration File
Next, the following message appears:
This appears to be the first time OOIBase32 has been executed. Please select a default spectrometer configuration
file from the following screen. This spectrometer configuration file will be used each time OOIBase32 is started.
Operating Instructions: ADC500 (for Windows 95/98 Users)
-2-
A file open dialog box then appears. Navigate to the OOIBase32 directory, and choose the default spectrometer
configuration file -- the file with .spec as the extension, preceded by the serial number of your spectrometer. (A
default spectrometer configuration file will be named something similar to
I2J613.spec.)
Configure Hardware Dialog Box
Next, the Configure Hardware dialog box opens. The parameters in this dialog box are usually set only once -- when
OOIBase32 is first installed and the software first opens.
1. Under Spectrometer Type, choose your spectrometer.
2. Under A/D Converter Type, choose ADC500/PC1000.
3. Under Base Address, choose the same setting as the dip
switches on the A/D board (and the same available
setting you found in your computer).
Remember that the Input/output Range (Base Address)
you selected was expressed in hexadecimal. In this
dialog box, the base address is given in decimal,
followed by the hexadecimal equivalent in parenthesis.
For example, “768 (0x0300)” gives the base address as
768 decimal and 300 hexadecimal.
4. Under IRQ, choose the same setting as the dip switches
on the A/D board (and the same available setting you
found in your computer).
5. For your setup, only these parameters apply. (Ignore the
other settings; they apply to other A/D converters.)
Click OK. You can always change these settings once
OOIBase32 is fully operational by selecting
Spectrometer | Configure | A/D Interface.
!!
If you do not see the “Configure Hardware” screen, exit the software. Then select Start | Run, and type
C:\windows\ooidrv.ini. Notepad will open. Edit this file for our device driver by finding the “Initialized”
entry and making sure this line reads Initialized=0. Save the OOIDRV.INI file and exit Notepad. Restart
OOIBase32. You should now see the “Configure Hardware” dialog box.
Spectrometer Configuration Dialog Box
Now that OOIBase32 is running, you need to configure your system. Select Spectrometer | Configure from the
menu. Go through each page in the Spectrometer Configuration dialog box to set system parameters. (See the
OOIBase32 Spectrometer Operating Software
Manual
for details.)
" In the Wavelength Calibration page, the
coefficients for each spectrometer channel in
your system have already been loaded as part of
the spectrometer configuration file that came on
a floppy diskette with your spectrometer. (See
the
Note on page 2.) If you did not receive this
floppy diskette, you can enter the wavelength
coefficients of your system from the
Wavelength Calibration Data Sheet that came
with your spectrometer. Check the Enabled box
for each spectrometer channel in your system.
" In the A/D Interface page, enter the same
values as you did in the Configure Hardware
dialog box.
Operating Instructions: ADC500 (for Windows 95/98 Users)
-3-
" The Detector Linearity page in this dialog box allows you to enter coefficients for an algorthim that corrects
for rare occurances of non-linearity of the detector. Contact Ocean Optics for more information.
Save the spectrometer configuration file by choosing Spectrometer | Save Configuration As from the OOIBase32
menu. You can rename the file or use the default file name (
[your serial number].spec). When prompted to make
this file the default spectrometer configuration file, choose Yes. The next time you run OOIBase32, the software
will use the file as the standard for your spectrometer configuration. When you exit OOIBase32, any changes to
the configuration file will be automatically saved to the default file.
OOIBase32 Settings Dialog Box
At this point, it is a good idea to configure several OOIBase32 operation parameters. Choose Edit | Settings from
the menu to open the OOIBase32 Settings dialog box. Go through each page of this dialog box to select options
for saving, opening, and printing data; to configure default setting files; and to select other important options such
as storing and copying data and choosing warning messages. (See the
OOIBase32 Spectrometer Operating
Software Manual
for details.)
Configure Data Acquisition Dialog Box
Finally, select Spectrum | Configure Data Acquisition from the menu to set your data acquisition parameters in
the Configure Data Acquisition dialog box. The Basic page allows you to set the integration time and choose
averaging and boxcar smoothing values. The External Trigger page allows you to specify the external trigger
mode. The Strobe page allows you to control external strobe events with the spectrometer. (See the
OOIBase32
Spectrometer Operating Software Manual
for details.)
Specifications
Operating Instructions: ADC500 (for Windows 95/98 Users)
-4-
Board architecture/design: half-length ISA-bus card for single slot in desktop PC
Resolution: 12-bit
Sampling frequency: 500 kHz (maximum)
Interface cable:
37-pin end to A/D card, 25-pin end to spectrometer
length is ~3.5' (slightly >1 meter)
Multiple-channel capability: supports up to 8 spectrometer channels
Installation parameters:
set dip switch for Base Address (default = 768 decimal, 300 hexadecimal)
set dip switch for IRQ (default = 7)
Integration time: 5 milliseconds to 60 seconds with S2000 series spectrometers
Changing the Base Address Settings for the ADC500
To change the Base Address settings on the ADC500 board, see the bank of 6 dip switches labeled SW1. Switches in
the OFF position have the decimal values shown. Switches in the ON position have a value of zero. The Base
Address is the sum of the values of the switches. In the default setting, switches 5 and 6 are added to give a total of
768. A few of the many combinations for Base Address settings are below. After you have changed the switches,
reinstall the card and change the software settings to match the hardware settings. (See pages 1-4 for instructions.)
The gray block indicates the position of the switch.
-5-
Switch # 12 3456
ON
OFF
D eci mal e quivalent 16 32 64 128 256 512
Value as show n 256 512
Switch # 12 3456
ON
OFF
Value as show n 16 256 512
Switch # 12 3456
ON
OFF
Value as show n 32 256 512
Switch # 12 3456
ON
OFF
Value as show n 16 32 256 512
switch is in the on, upward position =
Example: 768 decimal = Hex300 = 0x300 (Default Setting)
Example: 784 decimal = Hex310 = 0x310
Example: 800 decimal = Hex320 = 0x320
Example: 816 decimal = Hex330 = 0x330
Operating Instructions: ADC500 (for Windows 95/98 Users)
Changing the Interrupt Request Settings for the ADC500
To change the IRQ settings on the ADC500 board, see the bank of 4 dip switches labeled SW2. In the default
setting, the IRQ is set to 7. Other combinations for IRQ settings are below. After you have changed the switches,
reinstall the card and change the software settings to match the hardware settings. (See pages 1-4 for instructions.)
The gray block indicates the position of the switch.
Operating Instructions: ADC500 (for Windows 95/98 Users)
-6-
Switch # 1234
ON
OFF
IRQ value 3 5 7
Value as shown 3
Switch # 1234
ON
OFF
IRQ value 3 5 7
Value as shown 5
Switch # 1234
ON
OFF
IRQ value 3 5 7
Value as shown 7
Interrupt Request 7 (Default Setting)
Interrupt Request 5
Interrupt Request 3
switch is in the on, upward position =
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