Canon CXDI-31, Service Manual

Page: 131 / 209

2 Installation Manual
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5.2. Signal Names and Functions in X-ray Generator Connections
(1) X-ray synchronization signals
Signal Function
RDY_REQ1
RDY_REQ2
RDY_REQ3
X-ray emission signal (1st switch level)
RX_REQ1
RX_REQ2
RX_REQ3
X-ray emission signal (2nd switch level)
Indicates that the X-ray generator has issued an X-ray emission command.
This signal must continue for at least an interval “a”. If it is less than the
interval “a”, the enable X-ray emission signal (RLS) is not output. The
interval between the receiving of the X-ray emission signal from the X-ray
generator until the output of the enable X-ray emission signal must be 600
ms minimum.
The X-ray emission signal must be held at least during this interval.
If the X-ray emission signal is terminated during this interval, at least 1
second is required before operation is enabled again.
RX_COM1
RX_COM2
RX_COM3
X-ray release signal
After receiving the X-ray emission signal (RX_REQ) from the X-ray
generator, the CXDI checks whether it is ready for imaging.
If it is ready, it sends this signal to the X-ray generator.
ACT_XRAY
X-ray emission in progress signal
This signal is sent from the X-ray generator to the CXDI while the X-rays
are actually being emitted.
TER_XRAY
X-ray cutoff signal output
Not used
RDY_ACK
CXDI setup signal
Not used
INTERLOCK
CXDI interlock signal
This signal is sent to the X-ray generator while the CXDI interlock is
activated so that X-ray emission is not performed.
FG Casing ground
[Table,1]