MANUALE ISTRUZIONI / INSTRUCTIONS MANUAL
MTR605/025/DASM - R605/027/DASM - R605/170/DASM
Modello/Model R605DASM
J/ 2
ASR0
03_d
escrizion
e.fm
The analogic inputs are designed mainly for connection to 1Kohm potentiometers.
In this case the input range will be reduced with respect to the digitalization capacity of
the digital/ analogic convertor on the microprocessor. However, at the same time the
board will be better protected against wrong Potentiometres connections.
Other protection elements have also been added since, here too, it is possible that the
user does not employ Potentiometres but supplies an analogical signal directly.
The main purpose of these inputs is to furnish the collimator with the cassette sizes that
may be present or, to supply information related to focus-film/focus- floor distances (de-
pending on the configuration).
In general, non linearity introduced by the protection elements is contained and ade-
quate to their functions. However, should a greater degree of precision be required
(such as in the case of focus-film/focus-floor signals) we suggest that a voltage propor-
tional to the case be supplied which is included between 0 and 6 Vdc so as to make the
most of the convertor range.
Higher voltages that could occur from incorrect connections, up to 12V, will not damage
the input.
the 10 output relays each have a voltage-free exchange contact and may consequently
be adapted to a number of different configurations. Their use depends on the software
applied.
The CanBus communication interface is opto-insulated and needs external supply with
a direct voltage between 9 and 32Vdc.
In this case also, voltage for interface supply may be drawn from any one of the radio-
logical system supply sources or from an external source.
This type of connection is recommended when there are problems related to the pres-
ence of differences in earth potential within the system. See the typical connections di-
agrams that follow in this section.
This board also supplies the go-ahead to programme some of the radiological system
parameters. In this case a jumper is required on the board as shown in the following
photograph.
Ingresso analogico/analogic Input
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imatori\acs\a
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