This is the download website. Is polar electronic classroom 4[ 1] illegal? The command to start the diskless workstation can replace the corresponding file under "RPLFiles" on the server. Does the polar electronic classroom V2.0SR3 support cross-segment campus network teaching? Yes, just install the cross-network router software. Does the polar electronic classroom V2.0SR3 support multiple classes at the same time? Yes, just set each category to a different channel number. After the installation is completed, you are prompted to restart, but after the restart, you report that the file registration failed? The failure of file registration may be due to the lack of some necessary files in your system or the incorrect installation of DirectX media and Windows Socket 2.2 (Windows 95) upgrade package. Please reinstall DirectX Media and Windows Socket 2.2 and check the following files: Windows\System\ATL.dll version should not be less than: 3.00.8168 Windows \ system \ Mfc42.dll version should not be less than: 6. 00. 8447. 0 Windows \ System \ Msvcrt.dll version should not be less than: 6.00.8397.0 Why not choose high network transmission compensation intensity, high broadcast recording efficiency and network data verification as the default values in the advanced settings of the system settings? High network transmission compensation intensity is a compensation measure for some network cards with low performance (such as Realtek 8029, Realtek 8 139, NE2000 compatible cards, etc.). ), and network data verification is a verification measure for some network cards (such as Realtek 8029) that often send or receive wrong packets in network transmission. High efficiency of playing and recording is an intensive measure taken by teachers when they quickly switch pictures during playing or recording (such as playing VCD courseware, Authorware courseware and Flash courseware). These functions are very important to ensure the stability and fluency of teaching. But it will reduce your broadcasting efficiency by 5% ~ 10%, so if your network conditions are good, don't use high network transmission compensation intensity or network data verification. If you don't broadcast courseware, you don't need to use high broadcast and recording efficiency. Why can't there be a sound card and microphone for voice broadcast and voice intercom? First, make sure that your sound card driver is installed correctly. Then check whether the microphone is selected in the audio input device option of the volume control program, and if all are correct, you can play the voice. Voice intercom or student voice needs the support of full duplex sound card, which can be tested by the following methods: Select. Play the WAV file with the media player, and turn on the burner in the attachment to see if it can be recorded. If it can record, it is a full-duplex sound card, if not, it is a simplex sound card. Why can't some students hear the sound of the courseware when playing the courseware with sound? First, confirm whether the teacher's computer is equipped with a full-duplex sound card, whether the student's computer is equipped with a sound card, and whether the sound card can work normally. Then click the arrow of the recording device in the recording settings of the teacher's main interface, select the stereo mixer or similar description, and check the small box to play the sound of the courseware. Why is it not effective to play courseware with video files? When it is necessary to play courseware with video files (such as "Travel Around America"), the configuration of teachers' computers should be above Celeron 400, and the following configurations should be made: first, set the recording efficiency to high recording efficiency and the transmission compensation to low network compensation intensity in the system settings; Then set the graphics hardware acceleration of the display properties to none (open the display properties page, select the settings bar, click Advanced, select the performance bar, set the hardware acceleration to none, and restart the computer). Why do you hear your own reply when you talk to the other person? It may be that the sound card is not well shielded, so reducing the recording volume can obviously reduce the echo. It may also be that the recording setting of the other sound card has chosen cyclic playback, which causes the played sound to reach the recording port and be transmitted back to itself through the network. Why can't my student computer log in to the teacher's computer? Please check whether the channel numbers of your students' computers and teachers' computers correspond, and then use the ping command to check whether the TCP/IP protocol layer between students' computers and teachers' computers is really connected (the online neighbors are inaccurate). If not, please check or reinstall the TCP/IP protocol. Why do my students' computers often disconnect after logging in? This is caused by your abnormal network. Please use network detection software (such as sniffer) to check the smoothness and congestion of the network, and try to replace the network card and hub, and check the switch settings to determine the fault. After the screen is played, the color of the students' computer screen is distorted? This usually happens on Windows 95 machines. Windows 95 can't dynamically switch the number of colors, so color distortion will appear when displaying images with more colors with fewer colors. Please set the number of colors in the display properties on the student side, and then restart the machine. Can't the student computer receive the image of the online cinema? Please check whether DirectX media is correctly installed on the student side. Windows Media Player can be used to open MPEG files for playback. The student computer can receive the online cinema, but the picture color is wrong? Please use window mode to execute online cinema first. If the color is correct, it means that the student computer graphics card is not compatible with DirectX full-screen mode. Please reduce the display mode of the student computer, replace the graphics card driver of the student computer or turn off the graphics acceleration option of the student computer, and then try again. Students' computers display a black screen window after receiving the online cinema, which can't be played normally? Please disable or delete the sound card of the student computer, and then try again. If it can play normally at this time, please check whether the sound card of the student machine is installed correctly. If not, please reinstall or replace the sound card driver. Students' computers have a short pause after receiving online cinemas for a short time? This situation is caused by the incorrect clock of the sound card. Please change the sound card of the teacher's computer or the student's computer (preferably another brand) and try again. After remote shutdown or restart, after the student computer is started, an Active Desktop error message will be displayed on the desktop. Remote shutdown or restart is different from "system shutdown" using this computer. It is a forced shutdown operation that Active Desktop cannot handle. You can set the Windows desktop update in the folder options to the traditional style. Seek technical support If you encounter difficulties in using this software, please contact our dealers or agents, or directly visit our homepage for technical support, and we will solve the problem for you as soon as possible.