Signal Select / Observation Mode Selection Button - Hitachi TM3030 Plus Instruction Manual

NOTE : Changing the settings of the observation condition can adversely affect the beam
axis conditions. In such a case, perform beam axis adjustments. For the details,
refer to 5.2 Beam Axis Alignment.

4.3.13 Signal Select / Observation Mode Selection Button

The image signals (BSE / SE / Mix) and the observation modes (Conductor / Standard /
Chg-up Red.) can be set using the signal select / observation mode selection buttons. The
current image signal is indicated by a green border. If the Signal Select / Observation mode
is switched during observation, [Auto B/C] adjustment will be executed. The observation
mode is switched every time the same button is clicked, and the current mode is indicated
under the [signal select] buttons to be selected. Select a desired condition, depending on the
specimen to be observed, the observation purpose and the magnification settings. Besides, it
is recommended that the observation mode should be fixed (i.e. fix the mode to [Standard] or
[Chg-up Red.]), when observing the fixed field of view using each image signal (BSE / SE /
Mix).
The signal select / observation mode previously selected will be applied upon the application
startup.
Figure 4.3.13-1 Signal Select / Observation Mode Selection Button
NOTE : If switching the observation modes ([Conductor], [Standard] and [Chg-up Red.])
among different image signals or even in a single image signal, it takes over ten
seconds to reach the specified degree of vacuum. At the same time, image
brightness changes. After the brightness becomes stable, click the [Auto B/C]
button (See 4.3.20) to achieve the appropriate brightness level.
1. BSE (Backscattered Electron)
Compositional images can be observed along with atomic numbers of materials
composing samples. By shifting the image modes (see 4.3.5.3), it is also possible to
acquire shadowed and topographical information. When [COMPO] is selected, any mark
is not displayed in the information area located in the lower right part of the image
observation area. (see 4.3.2); when [Shadow 1] or [Shadow 2] is selected, the [S] mark is
displayed; when [TOPO] is selected, the [T] mark is displayed.
Every time the [BSE] button is clicked, [Conductor], [Standard] or [Chg-up Red.] is
selected in order and the selected observation condition is indicated under the [BSE]
button. Select a desired condition, depending on the specimen to be observed and the
observation purpose.
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