Operation
— 24 SPECTRO XEPOS — 19.01.2017
5.1.2 Beam Stop display on the instrument
The Beam Stop shields the source of radiation if the measurement is not active.
Therefore, the sample can be replaced when the X-ray tube is switched on. A
high-voltage generator (HV generator) is used to operate in the X-ray tube. The
displays on both sides of the spectrometer provide information about the
respective operating mode.
The following table illustrates the four display combinations that are possible:
Display "Beam Stop" Display "X-rays ON"
(lettering and radiation
symbol)
Operating condition
green light not illuminated Beam Stop closed
HV (high-voltage) generator off
e.g., spectrometer was just
switched on
green light orange light Beam Stop closed
HV generator switched on
e.g., sample replacement, tube
in standby mode
red light not illuminated Beam Stop open
HV generator switched off
This condition may occur during
the start-up test
red light orange light Beam Stop open
HV generator switched on
Measurement mode
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