SMD-30/1.5-multipoint digital microwave and four-wire power line carrier interface improvements EM
General, and Point to Multipoint digital shake wave needs to be practical, with its wide coverage, communication capacity, stable and reliable transmission quality, small size, high channel utilization,
MBTシューズ 販売店, the group ignored the flexibility to gradually receive attention. Carrier also its economic power,
vibram five fingers outlet, can still irreplaceable location. Therefore, in order to achieve multiple access digital shake a little wave and four-wire power line carrier communication EM and power sector, the manufacturers have also introduced a number of interface solutions. Here end the practice of Taiwan for many years introduced an economical, practical, simple circuit and EM effective four-wire interface mode. D-30/1.5 digital shake wave is AleatlSESA company's TDMA digital shake-wave device, the user interface has second-and fourth-line EM. ZDD series, each, series power line carrier machine (self-exchange part of the separation disk models) interface for second-line, four-line users, the two devices in the band for four-wire voice transmission, but transmission does not follow the same signaling Therefore, the interface design requirements can shake with the power line carrier wave signaling transfer compatible. Users call the carrier with the pulse switch user, the user can also use the pulse carrier switch calls User C can not be used because of power line carrier PTMF call dial) leaving the entire referral system to normal communications. Based on the above design requirements for this interface (see Figure 1). Won Bin H H nitrate mix once the central substation ■ Station 1 2 switch user interface design down (call carrier user) switch user hook dial four-carrier station terminal E / M user number, the PBX by the words degree dialed , sent to the central substation multipoint microwave, central substation digital microwave receiver, after processing by the VCC, UL5 UL36 control l3 feet out of the first zero potential so that the installation of the relay station on the carrier machine J3,
Beats By Dre Headphones, J3 switch to user-initiated audio and contact closure across the Road to justice, the signal through the high-frequency modulated high-frequency channel by the left foot to send 54 to the terminal station, the terminal station receives the signal anti-tone carrier unit, the relay is activated to receive calls, automatic exchange system is ready to receive number, then switch when the last carrier to extend the user number, J3 microwave pulse along the pulse line JIf by carrier drive high-frequency modulated carrier machine and then sent to the terminal station by anti-adjusted. Automatic switching system identification, vibration front. Carrier machine user hook, hook signal by the high frequency modulation sent to the central substation to receive the carrier machine, call received by the anti-adjusted relay J2 suction units, audio and microwave switch relay contact closure to ground potential for the E line, four-wire Fat, four-wire closed relay station, the channel set up both calls, the call, either hang up E, JIf line recovery, the channel out of work status and restore backup. 3-carrier call a user switches the user terminal uplink station carrier machine user hook, the signal through the high-frequency high-frequency channel sent to blame the system from the center of the substation, the station received by the counter-blame the carrier machine. Start to receive relay calls, dial tone the user to switch the terminal station number, central substation automatic exchange carrier plate so that the user selected voice switch to justice across the road, turn relay audio from the audio switch to E line is closed relay contacts to ground, center substation microwave is activated, sent to the scheduling of the microwave receiver and sent to the switch, the switch to ground potential E line, four-switch E / JIf user-initiated. Users continue to dial the carrier terminal station number switch users, the center sent to the scheduling of substation microwave, microwave receiver dispatch sent by the switch, E-carrier line with the terminal machine dial pulse pulse,
herve leger skirts, the switch closing number completed processing, the user dial ring. Start switch JIf line ground, sent by the dispatch center of the substation microwave, microwave JIf central substation ground potential line, the installation of relay J3 pull. Four-wire hair, four-wire closed relay. The establishment of the channel, the call begins, the call is completed, either hang up E / M line reset circuit out of work. Switch wiring job requirements above five categories for the Bell,
herve leger sale, act immediately on the start, setting down more than a number, and delay 2B issued, the last number issued in the form required by the pulse. The interface component selection: Relay 24V voltage requirements, resistance to 100t'll / 4W metal film resistors, inductors 600 a l000n impedance. Level Adjustment: four-wire carrier machine made, four-line income, level block diagram of the carrier according to the power level adjusted so that both the interface level to work properly after the nominal value. . (Closed gather in harvest date {ll: 1_01.2.)
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