• Configuring a 600 Series LINK Interface and Attached Instruments
• Resetting a LINK Configuration
• Disconnecting Instruments
• Using Run counters.
Configuring a 900 Series Interface
The 900 Series Interface is an analog-to-digital converter: it converts the analog signal (voltage) from a chromatographic detector into digital values that TotalChrom can then store, analyze, and plot.
You define how TotalChrom acquires data from detectors connected to a 900 Series interface in the instrument section of the method. These parameters include the sampling rate, run time, channel, and relay-timed events you want to occur during a run. (Timed events cause relays in the interface to switch, triggering an outside event, such as a valve switch on a chromatograph.) For more detailed information, refer to Chapter 12.
There are five steps to configuring a 900 Series interface:
• Choose a data acquisition port.
• Set A/D configuration options.
• If necessary, configure an autosampler.
• Save the configuration.
Each step is described in a separate procedure. ¾ To choose a data acquisition port:
1. In the Navigator, choose Configuration from the Build menu to open the Configuration Editor.
2. Select the 900 Series Interface you want to configure and choose Configure from the Instrument menu.
3. If the interface is not configured, the Acquisition Port dialog box opens.
4. Click the + marks to expand the tree and select the data acquisition port to which the interface is physically connected.
When a port is highlighted, you can click Query Port For Type to see which type of interface is connected to it.
¾ To set A/D configuration options:
1. Choose Continue.
The A/D (Analog-to-Digital) Configuration dialog box appears and shows the selected instrument name.
3. If you have an autosampler, follow the procedure, “To configure an autosampler.”
Otherwise, go to the final procedure, “To save the configuration.” ¾ To configure an autosampler:
Some autosamplers are equipped to communicate the rack and/or vial numbers of each injection. TotalChrom can store this information in the raw data file with the chromatographic data from the injection and include it in the header of each report that is printed after data analysis.
TotalChrom can interpret the coded rack and/or vial numbers from a long list of autosamplers. However, if the autosampler you are using does not appear in the A/D Configuration dialog box, you can choose Other Type and manually enter the information needed to interpret rack and vial codes. To read the rack and/or vial numbers, you must have the correct cable for the make and model of autosampler connected to your 900 Series Interface. 1. From the Autosamplers list in the A/D Configuration dialog box, select the
type of autosampler that is connected to the 900 Series interface.
Selecting the autosampler name changes the information in the Rack/Vial Mask Info area of the dialog box. These values are preset and cannot be changed. The Autosampler Code shows which device is selected. 2. If your autosampler was listed, skip steps 3 through 6 and go to the
following “To save the configuration” procedure.
OR
If the autosampler was not listed, choose Other Type from the top of the Autosamplers list.
All of the options in the A/D Configuration dialog box become available. You may need to refer to the manual that came with your autosampler to complete this information.
3. Select Positive or Negative as the appropriate Logic Sign. 4. Select Binary or BCD (binary coded decimal) as the Logic Type.
5. Specify the Number Of Vial Bits by entering the number or clicking on the up or down arrows.
This is the number of binary digits, or signal lines, that are sent to represent a vial number. The options are 1 through 8, indicating how many of pins 1 through 8 on the 900 Series Interface will receive vial information. 6. Specify the Number Of Rack Bits.
This is the number of binary digits, or signal lines, that are sent to represent a rack number. The options are 0 through 6, indicating how many of pins 9 through 14 on the 900 Series Interface will receive rack information. For more details, refer to the 900 Series Intelligent Interface Operator's Manual.
As you enter the rack and vial information, you will see the Autosampler Code change. These codes have the format “abnnmm” where:
a = N or P, designating negative (N) or positive (P) logic b = B or D, designating binary (B) or BCD (D) coded logic
nn = 1 through 8, designating the number of vial bits in base-4 format mm = 0 through 6, designating the number of rack bits in base-4 format You can revert to the original settings in the dialog box at any time by choosing Reset.
¾ To save the configuration: • Choose Finish.
TotalChrom creates a configuration file (.CFG) for the instrument. In the Configuration Editor Summary list, YES appears in the Configured column.
¾ To set Post-Sequence Options:
1. Select Post Sequence from the Instrument menu in the Configuration Editor.
Post Sequence Options appears:
2. Select a Post Sequence Action and choose OK.
• Selecting Clear Setup will leave the instrument uninitialized at the end of the sequence. No other options in the Post Sequence Options tab will be available. This is the only action available for a bracketed sequence.
• Selecting Use Last Active Method From The Sequence will leave the instrument set up with the last-used method. No other options in the Post Sequence Options tab will be available.
• Selecting Set Up With Specified Parameters will enable other options in the Post Sequence Options tab.
For additional information, refer to Setting Post Sequence Options in Chapter 12.