MTR 221 ACS - MTR 221 ACS DHHS
MANUALE ISTRUZIONI / INSTRUCTION MANUAL
O
PERATION
I
NSTRUCTIONS
32
Model R 221 ACS - R 221 ACS DHHS
MT
R
2
21
ACS
-
MTR
2
21
AC
S DHH
S - Ope
ration Instru
ctio
ns
R
ADIOGRAPHY
Automatic Operation of Square Field (Long and Cross)
Collimator in the Vertical Position
• The collimator must be vertical, ± 3°.
• The cassette-IN microswitch must be closed.
• The Bucky supplies cassette dimensions.
• SID is forwarded to the PCB on the collimator via CanBus.
• The collimator automatically sets to cassette dimension.
• The display indicates the SID selected and Long and Cross dimensions.
• The green LED on the front panel serves to indicate that the unit is ready.
The operator can:
• Turn the field light ON by activating the related push-button on the front panel or via
the external control.
• Reduce the set field using the knobs on the front panel or via CanBus. The field may
be re-sized but always within the automatically set field size. If the shutters close
completely, the output contact signalling "shutter closed" will be activated.
• Vary SID selected keeping the field size automatically constant.
Collimator in the Lateral Position
• The collimator must be positioned -90° left, +90° right; ± 3°.
• The cassette-IN microswitch must be closed.
• The Bucky supplies cassette dimensions.
• One of the 5 SID lateral switch contacts must be closed.
• The collimator automatically sets the cassette dimensions - field dimensions may be
reduced.
The operator can:
• Turn the light field light ON by activating the related push-button or via CanBus.
• Vary the set field size.
• Vary SID in use (selecting one of the 5 fixed SIDs) and keep the set field size
automatically constant.
Manual Mode
The collimator is in the manual mode if:
• The collimator is inclined at an angle exceeding 3° and less than 87°.
• Manual control is selected.
• The cassette-IN microswitch is open.
• The Bucky provides no information regarding cassette format.
• No SID signal is present.
When the system is in the Manual Mode, the yellow LED on the front panel is lit and the output
contact is activated.
The X-ray contact is always closed.
The operator can:
• Turn the light field ON by pressing the related button on the front panel.
• Reduce field directly with the knobs or push-buttons related to shutter opening.
Check on opening with the light field.
• Increase the set field with the knobs or the shutter-related knobs or push-buttons.
The field may be opened to the maximum mechanical opening or, if CanBus
controlled, to the setting fixed during the installation of the system.
• Check the opening with the light field or display reading.
