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&INSTR

 

This record is used to describe instrument (equipment) specific parameters exept those related to the electron column and the detector system itself.

NLSCP --- Number of Lateral Scan Positions

This variable specifies the number of lateral scan positions on the sample's surface if SCAN is set to T. This value together with the value of the XRANGE key in the MSETUP record determines the magnification if XPCRT is specified and the pixel distance on the CRT in use if MAGNI is specified in the &MSETUP record. If both MAGNI and XPCRT are explicitly specified then this variable has no effect.

XPCRT --- Pixel Distance on Used CRT

If SCAN is set to T then this variable specifies the pixel distance on the used CRT in mm. This value together with the value of the MAGNI key in the MSETUP record determines the distance between adjacent positions of the scanned electron beam or with the NLSCP key it gives the magnification. If both MAGNI and NLSCP are explicitly specified then MAGNI has the higher priority and NLSCP is therefore obsolete.



Horst Wagner
Tue Mar 19 10:24:55 MET 1996