Tecnai on-line help manual -- Options - UT Southwestern

<strong>Tecnai</strong> on-line help Options 128Options Software version 2• User - the value used for the magnification table. In most cases there will be only one calibrationmethod for each magnification, but in some cases there may be more than one. In that case the usedmagnification indicates which of the method results is used (the other method then gives a crosscheck).• Error (%) - each result is based on the measurement of two vectors (see the description of themethods). The error indicates the consistency in the measurement of the two vectors and is NOT anindication of the absolute accuracy achieved.• CCD/TEM - the ratio between the measured magnification on the CCD camera and the TEMreference magnification. On a perfect system, these values would all be the same.