TM 5-6350-280-23&PSECTION III PRINCIPLES OF OPERATION1.13 FUNCTIONALDESCRIPTION.The AMG (figure 1-4) requires a computer to monitor remote areas protected by the J-SIIDS. The UPS is used to providea minimum of 4 hours standby power should the monitor facility lose its ac power. The UPS is connected to theapplicable ac power source (100, 120, 230, or 240 Vac at either 50 or 60 Hz). The UPS provides its 120 Vac outputpower at 60 Hz to the CMA and computer. The CMA receives the data signals from up to 64 remote areas. Each datasignal is transmitted from a remote area by the J-SIIDS Data Transmitter for up to 10 miles over a dedicated telephoneline pair or a 600-ohm balanced transmission line pair. Each line pair is connected to the CMA. The CMA demodulatesthe data signals and sends the resulting data to the Communications CCA installed in the computer. The applicationsoftware instructs the computer to process the data from the Communications CCA and to update the status informationdisplayed on the color monitor. When the application software processes a status change, it alerts the operator with anaudible tone and flashing status indicators. The following paragraphs provide a more detailed description of the AMG andcomputer.1.13.1 J-SIIDSFunctionalDescription.The J-SIIDS physical security system monitors the status of various remoteareas and provides the status to the operations center for physical security. The J-SIIDS data transmitter generates anFSK signal that contains the encoded status of each area. The two tones employed in the FSK signal are 1070 Hz and1270 Hz. The data transfer rate of the FSK signal is 12 Hz. TheFigure 1-5. CMA Block Diagram.1-8
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
