Kenwood NXR-800 Service Manual

Also see for NEXEDGE NXR-800: Brochure Instruction manual Instruction manual Instruction manual Instruction manual

Contents

NXR-80033Pin No. Name I/O Function13 INRA_SW - No connection14 NC - No connection15 HOOK_RXD_SCM I Hook detection input16 AMP_SW O Power source control of audio poweramplifi er17 SCM_EN - No connection18 AF_MUTE O Audio mute control19 INSP_SW - No connection20 EVOL_DATA O Serial data to DAC(for audio level adjustment)21 PTT_AM16C I “Press-to-talk-switch” signal to Main MPU22 EVOL_CLK O Serial clock to DAC(for audio level adjustment)23 GND - Ground24 EVOL_LD O Serial load to DAC(for audio level adjustment)25 TAAD_SW O Route formation signal of audio circuit26 TA_SW O Route formation signal of audio circuit27 BEEP_SW O Route formation signal of audio circuit28 PATH_SW O Route formation signal of audio circuit29 RXAD_SW O Route formation signal of audio circuit30 MIC_SW O Route formation signal of audio circuit31 MICAD_SW O Route formation signal of audio circuit32 TD_SW O Route formation signal of audio circuit33 NC - No connection34 LO_VOL_DET I Detection of voltage for low voltage state35 GND - Ground36 PTT_TXD_SCM - No connectionCN402 (To X53-413 CN2)1 HI_VOL_DET I Voltage monitor2 GND - Ground3 50MPU_A_GND - Ground4 50MPU I 5V constant voltage5 50MPU_A_GND - Ground6 DC50 I 5V constant voltage7 DC50 I 5V constant voltage8 DC50 I 5V constant voltage9 DC50 I 5V constant voltage10 33MPU_A_GND - Ground11 33MPU I 3.3V constant voltage12 33MPU I 3.3V constant voltage13 33MPU_A_GND - Ground14 50MPU_A I 5V constant voltage15 33MPU_A I 3.3V constant voltagePin No. Name I/O Function16 33SH O 3.3V constant voltage17 50MPU_CONT O 5V regurator control18 NC - No connection19 E_PTT_SH I “External press-to-talk-switch” signalto Main MPU20 SC_SH I “Squelch control” signal to Main MPU21 GND - Ground22 SRXD_ATXO O UART signal from RF control MPU toMain MPU23 STXO_ARXO I UART signal from Main MPU to RFcontrol MPU24 GND - Ground25 RF_PTT I “Press-to-talk-switch” signal to Main MPU26 TX_STATE I “During the transmission” signal toMain MPU27 QT_DQT I “Detect QT or DQT” signal to Main MPU28 RADIO_EER I “Detect accident of RF block” signal toMain MPU29 GND - Ground30 ADSP_CK_SFT O “Frequency shift” signal to Analogmode DSP31 TRUKING I “Trunking mode” signal to Main MPU32 A16C_CK_SFT O “Frequency shift” signal to RF control MPU33 BER_DAT O Serial data for measurement bit error rate34 BER_CLK O Serial clock for measurement bit error rate35 GND - Ground36 SYS_RST O System reset signal from modem con-trol MPUCN713 (To COM D-sub 9-pin connector)1 CD - No connection2 DSR I Data Set Ready3 RD I Receive Data4 RTS O Request to Send5 SD O Send Data6 CTS I Clear to Send7 DTR O Data Terminal Ready8 RI - No connection9 GND - GroundRX Unit (X55-3100-14)Pin No. Name I/O FunctionCN5 (To RX ANT)1 RX_SIGNAL I Receive signal input (Coaxial)CN411 MONITOR_PORT O Use for RX BPF tuning (Coaxial)TERMINAL FUNCTION