Kenwood NXR-800H Service Manual

NXR-800H46Pin No. Name I/O Function2 GND - Ground3 BER_CLK I Serial clock for measurement bit error rate4 BER_DAT I Serial data for measurement bit error rate5 A16C_CK_SFT I “Frequency shift” signal to RF control MPU6 TRUNKING O “Trunking mode” signal to Main MPU7 ADSP_CK_SFT I “Frequency shift” signal to Analogmode DSP8 GND - Ground9 RADIO_ERR O “Detect accident of RF block” signal toMain MPU10 QT_DQT O “Detect QT or DQT” signal to Main MPU11 TX_STATE O “During the transmission” signal toMain MPU12 RF_PTT O “Press-to-talk-switch” signal to Main MPU13 GND - Ground14 STXO_ARXO I UART signal from Main MPU to RFcontrol MPU15 SRXO_ATXO O UART signal from RF control MPU toMain MPU16 GND - Ground17 SC_SH O “Squelch control” signal to Main MPU18 E_PTT_SH O “External press-to-talk-switch” signalto Main MPU19 NC - No connection20 50MPU_CONT I 5V regulator control21 33SH I 3.3V constant voltage22 33MPU_A O 3.3V constant voltage23 50MPU_A O 5V constant voltage24 33MPU_A_GND - Ground25 33MPU O 3.3V constant voltage26 33MPU O 3.3V constant voltage27 33MPU_A_GND - Ground28 DC50 O 5V constant voltage29 DC50 O 5V constant voltage30 DC50 O 5V constant voltage31 DC50 O 5V constant voltage32 50MPU_A_GND - Ground33 50MPU O 5V constant voltage34 50MPU_A_GND - Ground35 GND - Ground36 HI_VOL_DET O Voltage monitorCN3 (To X56-312 B/3 CN921)1 DC8 O 8V constant voltage2 GND - Ground3 DC8 O 8V constant voltage4 DC8 O 8V constant voltage5 50MPU O 5V constant voltage管脚号名称输入 / 输出功能2 GND - 接地3 BER_CLK 输入测量比特误码率的串行时钟4 BER_DAT 输入测量比特误码率的串行数据5 A16C_CK_SFT 输入至 RF 控制 MPU 的“频率偏移”信号6 TRUNKING 输出至主 MPU 的“集群模式”信号7 ADSP_CK_SFT 输入至模拟模式 DSP 的“频率比偏移”信号8 GND - 接地9 RADIO_ERR 输出至主 MPU 的“RF 块的检测事件”信号10 QT_DQT 输出至主 MPU 的“检测 QT 或 DQT”信号11 TX_STATE 输出至主 MPU 的“发射过程中”信号12 RF_PTT 输出至主 MPU 的“按讲开关”信号13 GND - 接地14 STXO_ARXO 输入从主 MPU 到 RF 控制 MPU 的 UART信号15 SRXO_ATXO 输出从 RF 控制 MPU 到主 MPU 的 UART信号16 GND - 接地17 SC_SH 输出至主 MPU 的“静噪控制”信号18 E_PTT_SH 输出至主 MPU 的“外部按讲开关”信号19 NC - 未连接20 50MPU_CONT 输入 5V 调整器控制21 33SH 输入 3.3V 恒定电压22 33MPU_A 输出 3.3V 恒定电压23 50MPU_A 输出 5V 恒定电压24 33MPU_A_GND - 接地25 33MPU 输出 3.3V 恒定电压26 33MPU 输出 3.3V 恒定电压27 33MPU_A_GND - 接地28 DC50 输出 5V 恒定电压29 DC50 输出 5V 恒定电压30 DC50 输出 5V 恒定电压31 DC50 输出 5V 恒定电压32 50MPU_A_GND - 接地33 50MPU 输出 5V 恒定电压34 50MPU_A_GND - 接地35 GND - 接地36 HI_VOL_DET 输出电压监视器CN3( 至 X56-312 B/3 CN921)1 DC8 输出 8V 恒定电压2 GND - 接地3 DC8 输出 8V 恒定电压4 DC8 输出 8V 恒定电压5 50MPU 输出 5V 恒定电压TERMINAL FUNCTION / 端子功能