User Manual

4343W X-ray Detector
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REFERENCE MANUAL
10.0 System Software
The 4343W deploys the Varex Smart Panel (VSP) architecture. X-ray Detector software is
composed of two parts:
• Software necessary to capture, process, and correct X-ray images (embedded in the detector).
• The VSP COMM workstation libraries comprise the VSP SDK.
Because the main software is embedded within the X-ray Detector, the only software required on
the workstation is a small set of DLLs that are copied from the DVD to the workstation.
Software interacting with the X-ray Detector will make API calls to these SDK libraries to control
the image acquisition process. These libraries manage connections to the X-ray Detector and the
transfer of files from the X-ray Detector to the workstation.
10.1 Radiography Acquisition
Radiographic acquisition is controlled by software. Each acquisition results in multiple frames
(exposed and post-offset). Exposure is initiated by sending the Prepare command followed by
the Trigger API command. When the trigger command is sent, it starts Integration.
The integration time is defined in the customer configuration file and may be different for each
mode. APIs can be used to obtain several of the configuration file mode settings.
When trigger is called, the software sends notifications indicating the begin and end of
integration. These signals are used to interface with the X-ray generator. The exposure on
notification indicates that integration has started and exposure can happen. The exposure off
notification indicates that integration has stopped, and the exposure should end. X-ray exposure
must happen between these two events.
As noted, each acquisition is based on at least two frames being read from the detector. The first
readout is the exposed frame which is readout immediately after the integration window. The
second readout is the post-offset frame(s). If corrections are turned on, corrections will be
applied to the exposed frame and a single frame is transferred to the workstation as soon as
possible. When the frame is transferred to the workstation, a Transfer End event is sent to the
workstation indicating that the corrected frame has been delivered to the workstation (see 03236
FP-2032 - Varex Smart Panel Software Interface for more information on acquisition and use
of APIs).
Figure 18 Exposure: Corrected Frames