ZEISS
6 Operation | 6.5 Finding Appropriate Detector Settings
à
The BSD Control panel is displayed.
2. In the BSD Control panel, click BSD in to insert the aBSD detector.
à
The stage is lowered by 20 mm to give space for the detector to be inserted.
à
The detector is inserted.
3. In the Crossbeam SEM Control panel, select the Imaging tab.
4. From the Signal A drop-down list, select aBSD1 or aBSD4 A depending on your detector
type and configuration.
INFO: A refers to the video channel. B, C, and D are also available if you have the four-
channel version.
5. Adjust the EHT and the working distance (WD) according to the suggestions in the table in
order to optimize the image.
6. In the BSD Control panel, click a quadrant symbol to toggle its status between on (white),
inverted (black), and off (gray).
7. To choose the respective mode, click BSD: COMPO or BSD: TOPO.
The default setting for BSD is BSD: COMPO. All six segments (S1–S6, aBSD) or four seg-
ments (S1–S4, BSD) are set to
on
and an image that is high in atomic number contrast is
obtained.
The default mode for BSD: TOPO is S3 on, S4 on, S5 inv and S6 inv (aBSD) and S1 on, S2
on, S3 inv and S4 inv (BSD).
8. If you want to change the default setting to BSD: TOPO, click BSD: Set TOPO.
9. From the BSD Gain drop-down list, select Low, Medium, High, or Very High.
INFO: Since the detector has a limited speed, it is recommended to use scan speed 6 or
higher (slower), especially at small magnifications. The lower the gain is, the faster is the
detector.
Instruction Manual ZEISS Crossbeam 550L, Crossbeam 550 | en-US | Rev. 3 | 349500-8122-000
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Summary of Contents for Crossbeam 550
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