Kenwood NX-900 Service Manual

Also see for NEXEDGE NX-900: Function reference Instruction manual Instruction manual

NX-90074Pin No. Pin Name I/O A/D Rating and ConditionParameter Min Typ Max Unit3TXD1Serial data output 1.RS-232C level.O DigitalVoltage Swing (3kΩ Load) ±5 ±9 VBaud Rate 11520 bpsCL 100 pF4 AUXIO9AUX input/output 9. I/O DigitalVIH 4 - 5.2 VVIL –0.5 - 1 VVOH (Io=–1.5mA) 4 - 5.2 VVOL (Io=1.5mA) - - 1.1 V5 DIData signal input. I Analog Input Voltage range (STD Deviation) - 0.5 - Vp-pFreq Response (STD Dev.) 20~9600Hz –3 3 dB6 MI2External MIC input. I AnalogAudio Level (STD Deviation) - 5 - mVrmsAllowable Freq 300 3000 HzInput Impedance - 600 - Ω7 GND (Ground) - GND8 AUXIO8AUX input/output 8. I/O DigitalVIH 4 - 5.2 VVIL –0.5 - 1 VVOH (Io=–1.5mA) 4 - 5.2 VVOL (Io=1.5mA) - - 1.1 V9TXD2Serial data output 2.TTL level.O DigitalVOH (Io=–1.5mA) 3.7 - 5.2 VVOL (Io=1.5mA) - - 1.1 VCL 100 pF10RXD2Serial data input 2.TTL level.I DigitalVIH 2.8 - 5.2 VVIL - - 0.65 VCL 100 pF11 GND (Ground) - GND12AUXIO7/BER_DATAAUX input/output 7.BER data input.I/O DigitalVIH 4 - 5.2 VVIL –0.5 - 1 VVOH (Io=–1.5mA) 3.7 - 5.2 VVOL (Io=1.5mA) - - 1.1 V13AUXIO6/BER_CLKAUX input/output 6.BER CLK input.I/O DigitalVIH 4 - 5.2 VVIL –0.5 - 1 VVOH (Io=–1.5mA) 3.7 - 5.2 VVOL (Io=1.5mA) - - 1.1 V14SBPower output afterpower switch.- PowerVoltage This parameter depends on Battery VoltageSupply Current - - 2 A15 AUXO2AUX output 2. O DigitalThe type of this port is open collector.VOL 0.4 VIOL –500 mA16 AUXO1AUX output 1. O DigitalThe type of this port is open collector.VOL 0.4 VIOL –500 mA17AFORX filtered audiooutput.O AnalogOutput Level 0.7 Vp-pCoupling Capacitor 0.1 μFallowable Load 100 - - kΩallowable freq 300 3000 HzTERMINAL FUNCTION