INFICON HAPSITE ER Chemical Identification System - Manual (Page 254)

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HAPSITE ER Operating Manual
5a If yes, then the BPG does not need adjustment. Proceed to Step 8 .
5b If no, the BPG will need to be adjusted. Proceed to Step 6 .
6 To raise the BPG, increase the value of the EM Voltage by 25 volts. To lower
the BPG, decrease the value of the EM Voltage by 25 volts.
7 Check the BPG value to see if the BPG is now in the range (0.4 to 0.6).
7a If the Base Peak Gain is still out of range, repeat Step 6 until the value comes
into range.
7b If the Base Peak Gain is in range, continue with Step 8 .
8 Check the Tune and Mass Calibration Status panel to see if any of the masses
are highlighted in red. A red box indicates the mass is High or Low. See
Figure
7-32 .
Figure 7-32 BPG Good with Mass 50 Low
8a If all mass percentages are within limits, then the instrument is tuned. Proceed
to
section 7.6.2, Adjusting Resolution, on page 7-29 .
8b If any mass percentages are High or Low (red boxes), then proceed to
Adjusting Resolution.