Leakage current can be measured by any one of three methods. A commercial leakage tester, such as the Simpson or RCA. A battery-operated AC milliammeter. The Data Precision Measuring the voltage drop across a resistor by means of a. VOM or battery-operated AC voltmeter. Nearly all bat- tery operated digital multimeters that have a 2 V AC range are suitable. See Fig. Using an AC voltmeter to check AC leakage. IF Board Schematic Diagram IF Printed Wiring Board N2 Board Schematic Diagram N2 Printed Wiring Board U2 Schematic Diagram U2 Printed Wiring Board The circuit boards listed below [Table 1] used in these models may have been processed using Lead Free Solder.
The boards are identified by the LF logo located close to the board designation e. F1, H1 etc [ see examples ]. The servicing of these boards requires special precautions to be taken as outlined below. It is strongly recommended to use Lead Free Solder material in order to guarantee optimal quality of new solder joints. Where engineers have created an experience so truly incredible, so beyond amazing… it will change the way you look at TV forever. Open your eyes and prepare your ears to really, truly see, hear and feel the benefits of p resolution.
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General System OperationYour security system is made up of a DSC Power control panel, one or more Power keypadsand various sensors and detectors.
The control panel will be mounted out of the way in a utility closetor in a basement. The metal cabinet contains the system electronics, fuses and stand-by battery. There is normally no reason for anyone but the installer or service professional to have access to thecontrol panel. All the keypads have an audible indicator and command entry keys. The LED keypads have a groupof zone and system status lights. The keypad is used to send commands to the system and to display the current system status.
The security system has several zones of area protection and each of these zones will be connectedto one or more sensors motion detectors, glassbreak detectors, door contacts, etc.
A sensor inalarm will be indicated by the corresponding zone lights flashing on a LED keypad or by writtenmessages on the LCD keypad. It is only intended to alert you and if included your central station of an emergency situation. Security systems are generally very reliable butthey may not work under all conditions and they are not a substitute for prudent security practicesor life and property insurance.
Your security system should be installed and serviced by qualifiedsecurity professionals who should instruct you on the level of protection that has been providedand on system operations.
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