4Operating in EI Mode
98 5977B Series MSD Operating Manual
To Set Analyzer Temperatures from the Instrument Control View
MSD ion source and Quad temperatures are stored in the current tune (*.u)
file. When a method is loaded, the setpoints in the tune file associated with
that method are downloaded automatically.
Procedure
1 In Instrument Control view, select MS Temperatures from the Instrument menu.
(See Figure 29.)
2 Enter the MS Source and MS Quad (mass filter) temperatures in the Setpoint
and Limit fields. (See Table 8.)
The GC/MSD interface, ion source, and quadrupole heated zones interact.
The analyzer heaters may not be able to accurately control temperatures if
the setpoint for one zone is much different from that of an adjacent zone.
Figure 29 MS temperatures dialog
Table 8 Recommended temperature settings
EI operation PCI operation NCI operation
MS Source 250 250 150
MS Quad 150 150 150
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