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Transpector MPH Operating Manual
The Electron Multiplier is controlled the same way as the emission. To turn the
Electron Multiplier on or off, click
EM
. There are only two different EM states:
OFF
(
Black
) and
ON
(
Green
)
.
Figure 5-11 Electron multiplier status
Emission and EM are the only settings that, when altered, have an immediate
impact on data collection.
The other scan parameters can be changed, but will not affect the data collection
until
SET
is clicked. Click
SET
to restart data acquisition using the changed
parameters.
To change Min/Max AMU values, highlight the current value in the appropriate box
and type in the Min or Max AMU value that is desired. Click
SET
to start collecting
data in the new mass range.
Dwell
and
ppAMU
are changed by a drop-down list which includes all allowable
values. Once either parameter is changed, click
SET
to start collecting data with
the new parameters.
EM Voltage
displays the voltage of the Electron Multiplier.