LUDLUM 70, System Manual

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Model 70 System Manual
Ludlum Measurements Inc.
7
May 2021
Please release the button appears, and upon doing that, the power will be OFF. At any time
during the countdown, releasing the ENTER button will cancel the power OFF.
4.2 DISPLAY CONTRAST
The contrast is automatically adjusted by temperature compensation using an internal
temperature sensor.
4.3 EXTERNAL AUDIO
On the lower left side of the unit is a special connector (external audio) or earphone jack
(shown on page 4). Users with the optional external earphone can plug it into this socket. When
this is done, the internal audio is silenced and the audio tones are only audible through the
earphone. This silencing of the unit’s audio is especially useful in covert scanning or when the
operator does not wish to alarm anyone with sudden audio tone increases.
4.4 DOSE, Screen 1
Search Mode
The search and dose mode is used to search out radioactive sources along with monitoring the
radiation dose to which the unit is exposed.