How do I have the calibration gas valve open during an analysis when using the G1701DA MSD ChemStation?
In the MS SIM/Scan Parameters dialog box of Edit Entire Method, selected from theMethod menu, click on the Timed Events. This causes the MS Timed Events Table dialog box to be displayed on top of the MS SIM/Scan Parameters dialog box. Select Valve from the dropdown menu for Event Type. This results in a Parameter 1 and a Parameter 2 selection with dropdown menus. One of the selections (only one selection if you do not have other valves configured) Parameter 1 is Calibration valve. Select On for Parameter 2. You should enter the time from the start of the analysis until the calibration valve is to be opened in the Time entry area. Then click on the Add. You should also enter an Off time which should be later than the On time. After you have entered the ON and Off times, Select the OK button to close this dialog box and return to the MS SIM/Scan Parameters dialog box.
