subject: Philips Iu22 Ultrasonic Diagnostic Apparatus And Thermal Image Fault Troubleshooting [print this page] Iu22 Philips color ultrasound system is intelligent in recent years, new ultrasound systems. Integrated 2D, 3D and 4D real-time imaging mode, to achieve the design and voice control, scanning, focusing, optimal control of an intelligent technologies. In order to play the machine's data analysis capabilities and to the Chinese report output, we host a Chinese computer operation with PACS workstations. The system used in our hospital two years, very few failures, but the cause of the malfunction caused by relatively rare, this phenomenon of the failure analysis and repair to do a brief summary and experience aim is to give B-station operators and maintenance engineers to reference.
The phenomenon of a fault B super-normal host images, computer workstations, video capture software interface flickering, and covered with vertical band interference. Contrast images of the two machines in the computer workstation software interface on the source image and B-images similar to real-time image acquisition.
Check the troubleshooting Because the images on computer workstations with failure, we suspect may be the video source and the transmission connection between the workstation is not very good. By checking with the computer workstation connected to the rear of the host B-signal output port, next to the COMP-VIDEO (composite video), BLK / WHT (black / white) interface are its interfaces do not match, plug the current S-VIDEO ( s terminal) found that image remains the same, s side interface well, ask the operator that no other people moving through these interfaces, so we ruled out the reasons for the hardware connections.
Failure occurs so that we doubt whether the PACS workstation software itself problem? Because failure just days before engineers were on the PACS software upgrade. Acquisition card used in computer workstations for the osprey-230 is a DMA mode using the video capture card, support PCI-X bus architecture, view the computer equipment manager found no hardware errors. We are a software company out of the Blue Rhythm (The company provides image acquisition card and software) directly into the capture card vidcap32 interface, and select the software filter (into the start? Program? Ospreymultimediacapture? Vidcap32? Options? Videoformat? Advancefeatures? Softwarefilter), found acquisition card itself, after the imaging and image processing through software, there is flickering as can be seen in the software process problems before, thus we have excluded the company's software, the Blue Rhythm reasons.
Rule out the connection and PACS software reasons, because the workstation can vaguely see the source of real-time video image, visible image can be transferred to the workstation, just the way transmission and display different video sources, thus we suspect images formatting problems may also enter vidcap32 interface, through the menu options into videosource the videostandard found that the current option is NTSC-M, instead choose to PAL-BDGHI, the acquisition of real-time image and video sources entirely consistent with real-time image , troubleshooting.
Principles of NTSC is orthogonal amplitude modulation system balance, PAL is progressive rather a quadrature amplitude modulation system balance. PAL and NTSC are two different standards of TV standard, PAL standard of 25 frames per second, 625 line TV scan lines and odd field in the former, even in the latter field, standard digital PAL TV standard resolution of 720 * 576, the main for China, Europe and other countries and regions. NTSC standard 29.97 frames per second (reduced to 30), television scanning line 525 line, even the first field, odd field in the post, digital NTSC TV standard resolution of 720 * 486, mainly for the United States, Japan and countries and regions .
China with 625-line interlaced system, each frame is divided into two, each line scan 312.5.
Philips Iu22 Ultrasonic Diagnostic Apparatus And Thermal Image Fault Troubleshooting
