Chapter 7: Digital Detector
5495975-1EN Rev.9 7-20
© 2013-2017 General Electric Company. All rights reserved.
Figure 7-26 Detector fault condition
In this condition the battery LED’s may be lit to show the condition of the battery.
Electro-magnetic Interference
The detector has been designed and tested to meet all IEC regulations in regard to electro-magnetic (EM)
susceptibility (and EMC).
However, there are no regulations for low frequency EM fields. All flat panel detectors have some suscep-
tibility to these EM fields.
This detector is robust to EM fields up to 0.1mG over a broad low frequency range (DC - 250kHz).
It has been found that some common equipment in clinical environments can generate EM fields well
over 0.1mG. Some measurements have shown 4mG field strengths which can cause artifacts on x-ray
images.
EM fields are reduced by the square of the distance between the EM source and the detector. Thus, mov-
ing the EM source twice as far away will reduce the field strength by 4 times.
General suggestions:
Keep IV pumps, patient monitoring, feeding pumps 1 meter or more away from any detector surface.
Consider turning off equipment that cannot be moved.
Change the patient or detector orientation /position to maximize distance from any equipment.
Possible sources of EM fields:
IV pumps
Monitors
Feeding pumps
Patient monitors
ECG equipment
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