Speco Technologies VM-1201 service manual Main Power Supply Block

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This section describes each functional block of the monitor.

2.1Main Power Supply Block

AC power inputAC socket

Line input noise / EMI filteringLine filter T902 ;

X-Cap C901, C902.

Y-Cap C903, C904, C905.

Over current protectionFuse

Power on/off controlPower switch

AC to DC conversion and filteringDiode D901, Capacitor C906

Start-up circuitR914, C914.

Main switching power controller, free run oscillation, voltage feed back, switching duty control, cycle by cycle over current protection, power MOSFET drivingU901-UC3842

Free run oscillationR909, C910.

Voltage feed back and controloutput voltage control R910, R911 & VR901; gain compensation C911& R903.

Current sensing and cycle by cycle over current protectionCurrent sensing R904; Noise filtering R906, C909.

Energy storing and transferringPower transformer T901.

Power drivingPower MOS transistor Q901.

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Contents Model Disclaimer APPENDIX: Spare Parts List Schematics and PCB Layout Diagram Operational Specification Operating EnvironmentPower Input Requirements Functional SpecificationSignal Input Requirements Display Quality Controls and adjustments Physical SpecificationsMain Power Supply Block Video input block Vertical & horizontal processorPhase detector Vertical Deflection BlockSupply pin9, 10 Mute output and 50/60HZ identification pin131No Display, No Power Horizontal Deflection Block4Vertical Deflection Failure 2No Display, power output normal3No Display No Raster Appendix A. Spare Parts List FBTAppendix B. Schematics and PCB Layout Diagram VR Board VM-901B/1201/1501B W/AUDIO Main Board

VM-1201 specifications

Speco Technologies is known for its commitment to providing high-quality surveillance solutions, and the VM-1201 is no exception. This innovative video monitor is designed to meet the needs of modern security systems while offering impressive features that enhance both performance and usability.

One of the standout characteristics of the VM-1201 is its 12-inch display, which provides clear and crisp video footage. This size strikes an excellent balance, making it suitable for various applications, whether for personal use, business security, or monitoring large areas in a facility. The monitor supports various video inputs, allowing users to connect multiple cameras and display them simultaneously. This versatility is particularly beneficial for security personnel who require real-time monitoring of multiple feeds.

Another key feature of the VM-1201 is its high-resolution display, which ensures that every detail is captured and displayed accurately. This is critical in a surveillance context where identifying individuals or assessing situations can depend on clarity. The monitor is equipped with advanced technologies that enhance image quality, such as brightness and contrast adjustments, ensuring optimal performance in various lighting conditions.

In terms of design, the VM-1201 is sleek and space-efficient, making it easy to integrate into any environment. The durable construction means it can withstand the rigors of continuous operation, making it a long-lasting addition to a surveillance system. Its flexible mounting options allow users to position the monitor in a way that best suits their monitoring needs, whether on a desktop, wall-mounted, or stand-alone.

Furthermore, the VM-1201 is user-friendly, featuring an intuitive interface and accessible controls that simplify operation. Quick access to settings and adjustments ensures that users can customize their viewing experience to align with their specific requirements.

Overall, the Speco Technologies VM-1201 combines exceptional performance, advanced technologies, and practical features that cater to the demanding needs of the security industry. Whether used in homes, retail environments, or corporate settings, this monitor delivers reliable and high-quality video monitoring solutions, making it a valuable asset for professionals and security enthusiasts alike. Its blend of functionality, durability, and user-centric design solidifies its position as a leading choice in video surveillance technology.