Construction FAQ Zhengzhou monitoring project approach is: Run C: \ WINDOWS \ SYSTEM directory Dxdiag.exe program to test sound working condition. If you pass the test, follow what methods: First: Restart your computer into "Safe Mode", open the Device Manager, all the duplicate device drivers installed surveillance Which Zhengzhou delete and re-install the driver starts running Dxdiag.exe program testing, you can pass the test. If this does not work, please press one step. Second: If it is a problem with integrated sound card installed to monitor the price of Zhengzhou, the replacement card, please shield integrated sound in the BIOS, Zhengzhou monitor telephone installation, or can not use; replace a sound card, run Dxdiag.exe program test, if it is can not pass the test, you can only replace the motherboard. First, install the camera: 1. Under supervision of field goal range to meet the requirements of the premise, its installation height: Indoor camera mounting height to 2.5 ~ 5m appropriate, to 3.5 ~ 10m outdoor appropriate; 2. Camera and supporting device, should pay attention to anti-sabotage, and in harmony with the surrounding environment. 3. Under the strong electromagnetic interference environment, the camera is installed should be isolated and insulated. 4. Outdoor installation of lightning protection measures to be taken. 5. Be sure to install the camera securely to prevent the monitor screen jitter. 6. Commissioning infrared light required night. 7. infrared light installation height should not exceed 4 meters high will affect the light reflectivity. 8. infrared camera, try to avoid direct light. 9. infrared camera's field of view should be avoided with full black object, open area, and water absorption of infrared light objects. 10. The work necessary to protect the infrared light indicators (see product instruction sheet). Zhengzhou Zhengzhou install surveillance installation monitoring phone _ _ source maintenance provided by Zhengzhou source maintenance Electronic Technology Co., Zhengzhou source maintenance Electronic Technology Co., Ltd. (www.hnxywb.com) strong, credible, in Zhengzhou integrated monitoring systems and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead source maintenance and you work into the brilliant, for a better future!