Kenwood NX-720 Service Manual

Also see for NEXEDGE NX-720: Installation guide Instruction manual Technical details Service manual Instruction manual

Contents

NX-720(G)/72057TERMINAL FUNCTION8pin Modular Connector SpecificationPinNo.PinName I/O SignalType Description/port type Item and Condition Min Typ Max Unit Note1 MBL O Digital CMOS output VOH 4.2 5.2 VVOL - 0.8 V2 SB O Power Switched B output Output Voltage This parameter depends on Bat-tery voltage.Output Current 200 mA3 GND - GND Ground Allowable Current Value 200 mA4PTT I Digital CMOS input(Pull Up: 5.0V/10k)VIH 4.2 5.0 VVIL 0 0.8 VTXD O DigitalCMOS 3-State Bufferoutput(Pull Up: 5.0V/10k)VOH 4.2 5.2 VVOL - 0.8 VBaud Rate - 19200 bps5 ME - GND MIC Ground MIC Ground This is ground port for Micro-phone.6 MIC I Analog Audio inputOutput Amplitude(1kHz, 60% Deviation) - 5 - mVrmsCoupling Capacitor - 10 - uFInput Impedance - 600 - Allowable Frequency 300 3000 Hz7 HOOK/RXD I Digital DTC144EE input(Pull Up: 5.0V/4.7k)VIH 4.2 5.0 VVIL 0 0.8 VBaud Rate - 115200 bps8 DM I Digital CMOS input/output(Pull Up: 5.0V/47k)VIH 4.2 5.0 VVIL 0 0.8 VO Digital VOL - 0.8 V15pin D-sub Connector SpecificationPinNo.PinName I/O SignalType Description Item and Condition Min Typ Max Unit Note1 SB - Power Switched B outputVoltage This parameter depends on Bat-tery voltage.Supply Current - - 2.0 A(with KCT-60) - - 0.5 A2 IGN I Digital Ignition sense input Input Voltage 10.8 - 16 V3 SP2/PA O Analog Speaker outputAudio Output 3 4 - W at 4, 10% Distor-tionCoupling Capacitor - 330 - uFRL 4 - - Allowable Frequency 300 - 3000 Hz