Hitachi S-4800 manual Functional blocks on the Control Panel, Control panel HV control block

2.3.5Control Panel

Most frequently used controls such that for Image observation, image recording.

Usual operation will be able to perform using the Control panel and the manual operation panel. In case of present model S-4700 and S-5200, these controls are placed on the Toolbar and on the top of the Scanning Image window.

2.3.5.1Functional blocks on the Control Panel

HV Control	Scan control	Image recording
		Monitoring function
	Auto control	Magnification control Stage, Image shift control

Fig 2-18 Control panel

2.3.5.2HV control block

(1) HV ON/OFF and HV indicator

When vacuum of ion pumps and specimen chamber is better than the specified value, ON button is enabled and HV indication blinks in yellow and blue color.

ON button applies high voltage to the electron gun and controls extraction voltage to obtain the emission current. The ON button is changed to SET when high voltage is applied. The SET button adjusts emission current.

OFF button shuts the gun high voltage down.

(2) HV control dialog window

gun high voltage value and emission current, or to execute flashing, click on the HV indicator. The following controls are open under the HV indicator.

• Vacc select button shows a pull down list of HV value. Select a voltage. Or

HV value is increased or decreased with button in 100V steps.

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