The Exposure button is used to initiate an x-ray exposure. For a complete
exposure, the button must be pressed and held until the Radiation Indicator no
longer illuminates and the audible signal is no longer heard. Releasing the
Exposure button immediately terminates the x-ray exposure.
CAUTION: Releasing the Exposure button prior to the completion of the x-ray
exposure will result in an incomplete exposure of the image. This may require the
operator to re-take the radiograph. When a premature release of the Exposure
button occurs, the system will flash the time display on and off until the operator
presses either the UP or DOWN arrow key next to the time display. Normal
operation will then resume.
The Ready Indicator illuminates when the system is ready to make an exposure.
Immediately after an exposure, the Ready Indicator flashes until the x-ray tube
cools down sufficiently to make the next exposure. When the Ready Indicator is
flashing, no exposure can be made.
The JB-70 has a visible and an audible Radiation Indicator. When an exposure is
in progress, the Radiation Indicator on the Operator Panel is illuminated and a
audible tone is heard. The exposure is complete when the Radiation Indicator is
extinguished and the audible tone is no longer heard.
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