Varex Imaging 2315NDT, Руководство пользователя

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USER
MANUAL
38 www.vareximaging.com
2315NDT v2 CMOS X-ray Detector User Manual
6
In Idle mode, T
EW
is not defined on the detector but it is determined by the interval between
trigger (minus T
R/O
) so the time between trigger (minus the readout time T
R/O
) defines the
exposure window (T
EW
).
7
When the detector received a second trigger, the SyncOut levels change their status and the
image is read out and transmitted to the PC. SyncOuts go back to their initial status after
T
R/O.
8
If no more trigger signals are sent, the detector resumes his original status until the next
external trigger.
The External Edge Trigger behavior is similar to the Software one, but the trigger signal comes
from an external source and it is directed to the SyncIn port. The timing specifications are the
same as for Software Trigger source shown in Table 15 on page 36 .
The SyncOuts indicate when the detector is ready to accept a SyncIn pulse. It is low (inactive)
during a system reset cycle, during power-down (sleep) mode, and during a frame exposure
cycle.
Figure 19 displays an example of External Edge Trigger configuration.
In this case, the SyncIn pulse is driven high when the user activates the ‘Expose’ button for the
X-ray equipment. With the change of the SyncOuts levels, the generator is informed that the
detector is ready to receive the X-ray emission and starts to irradiate.
Figure 19 Idle readout – Edge Trigger Timing