Chapter 3 Peak Detection and Labeling

Table 3-2 Basic Settings Tab Parameters (Spectrum Data Only) (Continued)

 

 

Parameter

Description

 

 

 

 

 

 

Peak Resolution

 

 

 

 

 

 

 

Mass Resolution

Value used to determine the Filter Width used for detection.

 

 

 

For more information, see Section 3.1.2, The Resolution-

 

 

 

Based Peak Detection Routine.

 

 

 

Default values for different types of data are:

 

 

 

Mariner data— 5,000, which is optimized for masses

 

 

 

below 3,000 m/z. Decrease this value if you are

 

 

 

analyzing proteins.

 

 

 

Voyager linear data— 2,000, which is optimized for

 

 

 

 

 

 

masses below 20,000 m/z. Decrease this value if you

 

 

 

are analyzing higher masses or want to label average

3

 

 

isotope masses.

 

 

Voyager reflector data— 10,000, which is optimized for

 

 

 

masses below 20,000 m/z. Decrease this value if you

 

 

 

are analyzing higher masses or want to label average

 

 

 

isotope masses.

 

 

 

If you set a resolution value of:

 

 

 

1,000 or greater— The software uses the setting until it

 

 

 

reaches the mass at which isotopic resolution is no

 

 

 

longer possible, then switches to a resolution of 1,000,

 

 

 

the resolution that corresponds to isotopic clusters.

 

 

 

Less than 1,000— The software uses the setting for all

 

 

 

masses.

 

 

 

NOTE: The Mass Resolution you set here is also used by the

 

 

 

Elemental Composition Calculator, the Elemental Targeting

 

 

 

Application, and the Default Smoothing function. For more

 

 

 

information, see Section 6.1, Using the Elemental

 

 

 

Composition Calculator, Section 6.6, Using the Elemental

 

 

 

Targeting Application, and Section 5.7, Noise

 

 

 

Filtering/Smoothing.

 

 

 

 

 

 

 

Continued

3-24 Applied Biosystems