Fluke Biomedical 8000 Victoreen - Manual (Page 16)

Victoreen 8000
Operators Manual
2-4
For automatic brightness control machines, place appropriate shielding over the detector to drive the
output to its maximum. A folded lead apron, gloves or a lead sheet may be used. For manual systems,
set the machine for its maximum output and use appropriate shielding to protect the image intensifier.
Other Applications
The basic principles are the same for other applications. In general, the detector should be located 18 to
40 inches from the x-ray source. The detector should be aligned with the x-ray tube axis with the top of
the detector facing the x-ray source. The detector should be in the center of the x-ray beam and the
beam should be collimated to the round or square alignment marks on the top of the detector.
For chest x-ray machines, the detector may be strapped or taped to the table in front of the film cassette.
For panoramic dental machines, the detector may be strapped or taped to the film cassette holder.
Inserting the Filter Slide
The NERO mAx filter slides are inserted into the front of the detector. The filter slides are keyed so that
they may only be inserted one way. To insert the filter slide, place the filter slide in the opening in the
front of the detector and gently push. The slide will click into place at each of its positions. Move the filter
slide until the desired kVp range (W/Al) or target material (Mammo) is closest to the detector front panel
(below “kVp RANGE”).
Connections to the NERO mAx
The NERO mAx detector and control console are connected to each other via a 25-foot cable. The
NERO mAx power should be turned off when connecting the detector to the control console, connecting
an external ion chamber to the detector or connecting the mAs leads.
mAs Connections
WARNING
Extreme caution should be used when making
connections to the mAs terminals of the X-ray
generator. Improper connections may result in
injury, damage to the NERO mAx, and/or damage
to the x-ray generator. Tube current (mA and
mAs) measurements should only be made by
persons familiar with the calibration and repair of x-
ray machines.
Two mAs cables are provided with the NERO mAx; 12-ft. long mAs leads and 12-ft. long mAs extension
leads. The mAs leads are black, with a miniature phone plug at one end and alligator clips at the other
end, the mAs extension leads have clear insulation with two banana plugs at one end and alligator clips
at the other end. The miniature phone jack of the black mAs leads plugs into the mAs jack on the front
panel of the NERO mAx detector. The alligator clips may then be connected to the generator’s mAs
terminals. If the black mAs leads have insufficient length, the mAs extension leads may be used to
provide additional length. The mAs extension leads may be used in two ways; the extension lead banana
jacks may be plugged into the generator’s mAs terminals (if the generator has banana jacks) or the
extension leads may be reversed and the alligator clips can be clipped to the generator’s mAs terminals.
The opposite end of the mAs extension leads are to be connected to the alligator clips at the end of the
black mAs leads. When using the mAs extension leads, care should be used to make sure that the leads
are not shorted together when they are connected.