Set-up Tab

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Model 400 Setup Tab

Acquisition Setup

The chart display parameters are entered from this group.

Run Time: This value sets the time scale of the chart from 1 to 20 minutes in 1-minute increments.

Retention time: This is used to set the start delay of an acquisition run from 0 –100 seconds.

Peak Area: You can use this parameter to normalize the value of peak areas to a more convenient scale.

Peak Height: This function changes the resulting output of the detector from 200% to 10% to amplify or attenuate the signal output. There are three uses for the Peak Height Calibration: 1) normalize a peak height; 2) make peaks of the same concentration from different detectors look about the same; 3) to avoid saturating an external data system. For example, the data system may have 1V full scale. So it may be required to attenuate the 5V FS output to 1V FS (20% of 5V FS) to match it. Please notice that this setting only affects the analog signal output. It does not affect the signal reading and charting on the screen of the detector.

Peak Width Position: Determines where the width measurement is taken relative to the height of a peak.

Report Setup

Use the check boxes next to each item to include it on a report. When “Send a report after a run” is checked, the detector will prompt you to print or send a report when you tap “Finish” button to end a run. You need directly tap “To a printer” or “To a computer” to select where you send your report. Please notice that this detector only supports a limited number of printers. Instead, you may send a report to your computer and print it on the printer attached to your computer.

Utilities

The utilities are used for system diagnostics.

Auto Scale: When selected, the detector will automatically scale the chart after a data

acquisition run.

Visual Integration: When selected, the calculated peak area is filled with blue and a red line marks

the width for user to check how the calculation is done.

Toggle Laser: This action checks both the laser and the light detector. The signal voltage

should drop when the laser is turned off. NOTE: The laser should not be turned

off unless you suspect a problem or have been instructed to do so. When

turned off the laser needs 30 minutes to reestablish a stable beam.

Output: This function tests the signal connection between the detector and the external data system. It replaces the actual output with fixed output signals of 5V, 2.5V, 1.25V, 0.625V, 0.312V, 0.156V, 0.078V and 0V.

Send test data

to a printer: This function sends a short message to a printer attached to this detector to see if the connection is good and if the printer prints test message correctly. This function is available when “To a printer” in “Report Setup” group is selected.

Select Printer: This function pops up a screen for selecting printers.

Send test data

to a computer: This function sends a short message to a computer attached to this detector to see if the connection is good and if the RS232 port of the computer is set up correctly. This function is available when “To a computer” in “Report Setup” group is selected.

Memo Flag: The memo flag indicates that a memo has been saved and should be reviewed before continuing with operation. Tap the icon to go to the memo tab in the Chart screen.