USER'S MANUAL
Technical characteristics
(Rev. 0) I-Max Touch (110-120V)
25
5.5 Measurement method of technical factors
(paragraph for authorised personnel)
WARNING:
These measurements require the removal of the HF group covers; this
means to gain access to internal parts where high voltage are normally
present.
For the measurement of the exposure parameters with the invasive
method, please follow the procedure described in the Service manual.
WARNING:
During the panoramic examination, the set value of kV and tube current
varies according to a fixed curve, to compensate the variations in
absorption by the patient's tissues; in this way, it is possible to obtain a
good uniformity of the image contrast. In particular, the chosen value is
lowered during the initial phase, and increased on the canine/incisor
zone, in order to compensate the effect of greater attenuation owing to
the spine.
The value displayed during the panoramic examination corresponds to
the one chosen by the user, while the real value can be different; this fact
must be considered if the exposure parameters are checked using
standard diagnostic mode.
The accuracy of the exposure parameters kV and mA, stated in the
Technical Data section, refers to the accuracy compared with the
instantaneous value set by the system.
In any case, the manufacturer guarantees that the accuracy of the
exposure parameters is always in compliance with the international
standards for the safety of medical devices IEC 60601-1. In particular, in
accordance with IEC 60601-2-7, the maximum deviation (including the
correction and instrumental doubt) is less than or equal to ±10 for kV,
while for tube current it is less than or equal to ±15%.
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