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实验四 DBPSK调制及解调实验

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实验四 DBPSK调制及解调实验实验四 DBPSK调制及解调实验 实验四 DBPSK调制及解调实验 一、实验目的 1、 掌握DBPSK调制和解调的基本原理; 2、 掌握DBPSK数据传输过程,熟悉典型电路; 、 熟悉DBPSK调制载波包络的变化; 3 4、 掌握DBPSK载波恢复特点与位定时恢复的基本方法; 二、实验器材 1、 主控&信号源、9号、13号模块 各一块 2、 双踪示波器 一台 3、 连接线 若干 三、实验原理 1、DBPSK调制解调(9号模块)实验原理框图 I 256K载波1 NRZ_I差分 编码PN15基带信号 调...

实验四 DBPSK调制及解调实验
实验四 DBPSK调制及解调实验 实验四 DBPSK调制及解调实验 一、实验目的 1、 掌握DBPSK调制和解调的基本原理; 2、 掌握DBPSK数据传输过程,熟悉典型电路; 、 熟悉DBPSK调制载波包络的变化; 3 4、 掌握DBPSK载波恢复特点与位定时恢复的基本方法; 二、实验器材 1、 主控&信号源、9号、13号模块 各一块 2、 双踪示波器 一台 3、 连接线 若干 三、实验原理 1、DBPSK调制解调(9号模块)实验原理框图 I 256K载波1 NRZ_I差分 编码PN15基带信号 调制输出信号源取反 CLK差分编码时钟NRZ_Q 反相256KQ载波2 差分门限低通 译码判决滤波DBPSKLPF-BPSK解调输入解调输出 相干载波BPSK解调差分译码输出时钟 9# 数字调制解调模块 数字锁载波 13# 载波同步及位同步模块相环同步SINBS2数字锁相环输入载波同步输入 四、实验步骤 实验项目一 DBPSK调制信号观测(9号模块) 概述:DBPSK调制实验中,信号是用相位相差180?的载波变换来表征被传递的信息。本项目通过对比观测基带信号波形与调制输出波形来验证DBPSK调制原理。 1、关电,按表格所示进行连线。 源端口 目的端口 连线说明 信号源:PN 模块9:TH1(基带信号) 调制信号输入 信号源:256KHz 模块9:TH14(载波1) 载波1输入 信号源:256KHz 模块9:TH3(载波2) 载波2输入 (2) draw a purge system, confirmed by the supervising principal; (3) the purging of temporary pipe installation, required support and reinforcement, purge outlet setting a fixed bracket, easy to check; (4) at the purging outlet cordon, by the person responsible for supervision; (5) set up a special panel of steam pipe blowing will be attended by a unified command, assigning their tasks; (6) steam blowing the steps are as follows: a. open the trap, vent and drain valve; B. should warm-up before purging; C. check the expansion joints, thermal displacement of the spring hanger and pipe; D. used to purge the vapor temperature should not exceed the tubing operating temperature; E. purge steam should be heated ? cool ? reheating in the order; F. purge lines should be a blow out after blowing the next; G. purge purging of the target of export place polishing the quality of checks, no rust, debris on the targets for qualifying. (7) the washing, sweeping, the qualified (confirmed by the Commissioner and owners) after the pipeline, should recover, recovery procedures with the dismantling steps instead, and blanks are removed, should be put on the official gasket, once the recovery is complete, confirmed by the supervision of site, fill out the purge, rinse records. 2. static equipment installation programme 2.1 installation program setup for static equipment for static equipment, see below. 2.2 the construction preparation 2.2.1 all personnel should be familiar with equipment installation and technical information, including equipment manufacture and Assembly diagrams and component diagrams, equipment installation documentation, special tools, manuals, packing list and process installations, equipment certification, the constructionaaBy-pass, wash downstream parts of the pipeline. (5) take exit of the flushing line with glasses of water, check whether the water color and 信号源:CLK 模块9:TH2(差分编码时钟) 调制时钟输入 模块13:TH2(载波同步输载波同步模块信号模块9:TH4(调制输出) 入) 输入 模块9:TH10(相干载波输模块13:TH1(SIN) 用于解调的载波 入) 模块9:TH4(调制输出) 模块9:TH7(解调输入) 解调信号输入 模块9:TH12(BPSK解调模块13:TH7(数字锁相环数字锁相环信号输输出) 输入) 入 模块9:TH11(差分译码时模块13:TH5(BS2) 用作差分译码时钟 钟) 2、开电,设置主控菜单,选择【主菜单】?【通信原理】?【BPSK/DBPSK数字调制解调】。将9号模块的S1拨为0100,13号模块的S3拨为0111。 3、此时系统初始状态为:PN序列输出频率32KHz,调节信号源模块的W3使256KHz载波信号的峰峰值为3V。 4、实验操作及波形观测。 (1)以9号模块“NRZ-I”为触发,观测“I”; (2) draw a purge system, confirmed by the supervising principal; (3) the purging of temporary pipe installation, required support and reinforcement, purge outlet setting a fixed bracket, easy to check; (4) at the purging outlet cordon, by the person responsible for supervision; (5) set up a special panel of steam pipe blowing will be attended by a unified command, assigning their tasks; (6) steam blowing the steps are as follows: a. open the trap, vent and drain valve; B. should warm-up before purging; C. check the expansion joints, thermal displacement of the spring hanger and pipe; D. used to purge the vapor temperature should not exceed the tubing operating temperature; E. purge steam should be heated ? cool ? reheating in the order; F. purge lines should be a blow out after blowing the next; G. purge purging of the target of export place polishing the quality of checks, no rust, debris on the targets for qualifying. (7) the washing, sweeping, the qualified (confirmed by the Commissioner and owners) after the pipeline, should recover, recovery procedures with the dismantling steps instead, and blanks are removed, should be put on the official gasket, once the recovery is complete, confirmed by the supervision of site, fill out the purge, rinse records. 2. static equipment installation programme 2.1 installation program setup for static equipment for static equipment, see below. 2.2 the construction preparation 2.2.1 all personnel should be familiar with equipment installation and technical information, including equipment manufacture and Assembly diagrams and component diagrams, equipment installation documentation, special tools, manuals, packing list and process installations, equipment certification, the constructionaaBy-pass, wash downstream parts of the pipeline. (5) take exit of the flushing line with glasses of water, check whether the water color and 学号: 姓 (2)以9号模块“NRZ-Q”为触发,观测“Q”。 (3)以9号模块“基带信号”为触发,观测“调制输出”。 (2) draw a purge system, confirmed by the supervising principal; (3) the purging of temporary pipe installation, required suppo3 rt and reinforcement, purge outlet setting a fixed bracket, easy to check; (4) at the purging outlet cordon, by the person responsible for supervision; (5) set up a special panel of steam pipe blowing will be attended by a unified command, assigning their tasks; (6) steam blowing the steps are as follows: a. open the trap, vent and drain valve; B. should warm-up before purging; C. check the expansion joints, thermal displacement of the spring hanger and pipe; D. used to purge the vapor temperature should not exceed the tubing operating temperature; E. purge steam should be heated ? cool ? reheating in the order; F. purge lines should be a blow out after blowing the next; G. purge purging of the target of export place polishing the quality of checks, no rust, debris on the targets for qualifying. (7) the washing, sweeping, the qualified (confirmed by the Commissioner and owners) after the pipeline, should recover, recovery procedures with the dismantling steps instead, and blanks are removed, should be put on the official gasket, once the recovery is complete, confirmed by the supervision of site, fill out the purge, rinse records. 2. static equipment installation programme 2.1 installation program setup for static equipment for static equipment, see below. 2.2 the construction preparation 2.2.1 all personnel should be familiar with equipment installation and technical information, including equipment manufacture and Assembly diagrams and component diagrams, equipment installation documentation, special tools, manuals, packing list and process installations, equipment certification, the constructionaaBy-pass, wash downstream parts of the pipeline. (5) take exit of the flushing line with glasses of water, check whether the water color and 思考:分析以上观测的波形,分析与ASK有何关系, 分析:I和Q处的波形分别为两个相位不同的2ASK,调制输出的是两个2ASK分别于两 π 的载波相乘后再相加的结果,个相位相差 实验项目二 DBPSK差分信号观测(9号模块) 概述:本项目通过对比观测基带信号波形与NRZ-I输出波形,观察差分信号,验证差分变换原理。 1、保持实验项目一中的连线。 2、将9号模块的S1拨为“0100”。 3、以“基带信号”为触发,观测“NRZ-I”。 记录 混凝土 养护记录下载土方回填监理旁站记录免费下载集备记录下载集备记录下载集备记录下载 波形,并分析差分编码规则。 (2) draw a purge system, confirmed by the supervising principal; (3) the purging of temporary pipe installation, required support and reinforcement, purge outlet setting a fixed bracket, easy to check; (4) at the purging outlet cordon, by the person responsible for supervision; (5) set up a special panel of steam pipe blowing will be attended by a unified command, assigning their tasks; (6) steam blowing the steps are as follows: a. open the trap, vent and drain valve; B. should warm-up before purging; C. check the expansion joints, thermal displacement of the spring hanger and pipe; D. used to purge the vapor temperature should not exceed the tubing operating temperature; E. purge steam should be heated ? cool ? reheating in the order; F. purge lines should be a blow out after blowing the next; G. purge purging of the target of export place polishing the quality of checks, no rust, debris on the targets for qualifying. (7) the washing, sweeping, the qualified (confirmed by the Commissioner and owners) after the pipeline, should recover, recovery procedures with the dismantling steps instead, and blanks are removed, should be put on the official gasket, once the recovery is complete, confirmed by the supervision of site, fill out the purge, rinse records. 2. static equipment installation programme 2.1 installation program setup for static equipment for static equipment, see below. 2.2 the construction preparation 2.2.1 all personnel should be familiar with equipment installation and technical information, including equipment manufacture and Assembly diagrams and component diagrams, equipment installation documentation, special tools, manuals, packing list and process installations, equipment certification, the constructionaaBy-pass, wash downstream parts of the pipeline. (5) take exit of the flushing line with glasses of water, check whether the water color and 学号: 姓 分析:这种编码规则是用相邻码元的跳变和不变来表示消息,而与码元本身的电位或极性无关,即有跳变为+E,无跳变为-E。 实验项目三 DBPSK解调观测(9号模块) 概述:本项目通过对比观测基带信号波形与DBPSK解调输出波形,验证DBPSK解调原理。 1、保持实验项目一中的连线。将9号模块的S1拨为“0100”。 2、以9号模块的“基带信号”为触发,观测13号模块的“SIN”,调节13号模块的W1使“SIN”的波形稳定,即恢复出载波。 以9号模块的“基带信号”为触发观测“DBPSK解调输出”, (2) draw a purge system, confirmed by the supervising principal; (3) the purging of temporary pipe installation, required suppo5 rt and reinforcement, purge outlet setting a fixed bracket, easy to check; (4) at the purging outlet cordon, by the person responsible for supervision; (5) set up a special panel of steam pipe blowing will be attended by a unified command, assigning their tasks; (6) steam blowing the steps are as follows: a. open the trap, vent and drain valve; B. should warm-up before purging; C. check the expansion joints, thermal displacement of the spring hanger and pipe; D. used to purge the vapor temperature should not exceed the tubing operating temperature; E. purge steam should be heated ? cool ? reheating in the order; F. purge lines should be a blow out after blowing the next; G. purge purging of the target of export place polishing the quality of checks, no rust, debris on the targets for qualifying. (7) the washing, sweeping, the qualified (confirmed by the Commissioner and owners) after the pipeline, should recover, recovery procedures with the dismantling steps instead, and blanks are removed, should be put on the official gasket, once the recovery is complete, confirmed by the supervision of site, fill out the purge, rinse records. 2. static equipment installation programme 2.1 installation program setup for static equipment for static equipment, see below. 2.2 the construction preparation 2.2.1 all personnel should be familiar with equipment installation and technical information, including equipment manufacture and Assembly diagrams and component diagrams, equipment installation documentation, special tools, manuals, packing list and process installations, equipment certification, the constructionaaBy-pass, wash downstream parts of the pipeline. (5) take exit of the flushing line with glasses of water, check whether the water color and 多次单击13号模块的“复位”按键。观测“DBPSK解调输出”的变化。 3、以信号源的CLK为触发,测9号模块LPF-BPSK,观测眼图。 (2) draw a purge system, confirmed by the supervising principal; (3) the purging of temporary pipe installation, required support and reinforcement, purge outlet setting a fixed bracket, easy to check; (4) at the purging outlet cordon, by the person responsible for supervision; (5) set up a special panel of steam pipe blowing will be attended by a unified command, assigning their tasks; (6) steam blowing the steps are as follows: a. open the trap, vent and drain valve; B. should warm-up before purging; C. check the expansion joints, thermal displacement of the spring hanger and pipe; D. used to purge the vapor temperature should not exceed the tubing operating temperature; E. purge steam should be heated ? cool ? reheating in the order; F. purge lines should be a blow out after blowing the next; G. purge purging of the target of export place polishing the quality of checks, no rust, debris on the targets for qualifying. (7) the washing, sweeping, the qualified (confirmed by the Commissioner and owners) after the pipeline, should recover, recovery procedures with the dismantling steps instead, and blanks are removed, should be put on the official gasket, once the recovery is complete, confirmed by the supervision of site, fill out the purge, rinse records. 2. static equipment installation programme 2.1 installation program setup for static equipment for static equipment, see below. 2.2 the construction preparation 2.2.1 all personnel should be familiar with equipment installation and technical information, including equipment manufacture and Assembly diagrams and component diagrams, equipment installation documentation, special tools, manuals, packing list and process installations, equipment certification, the constructionaaBy-pass, wash downstream parts of the pipeline. (5) take exit of the flushing line with glasses of water, check whether the water color and 学号: 姓 五、实验报告 1、分析实验电路的工作原理,简述其工作过程; 基带信号先经过差分编码得到相对码,再将相对码的1电平和0电平信号分别与256K载波及256K反相载波相乘,叠加后得到DBPSK调制输出;已调信号送入到13模块载波提取单元得到同步载波;已调信号与相干载波相乘后,经过低通滤波和门限判决后,解调输出原始相对码,最后经过差分译码恢复输出原始基带信号。其中载波同步和位同步由13号模块完成。 2、通过实验波形,分析DBPSK调制解调原理。 调制原理:先对二进制数字基带信号进行差分编码,即把表示数字信息序列的绝对码变换成相对码,然后再根据相对码进行绝对调相,从而产生二进制差分相移键控信号。 解调原理:对DBPSK信号进行相干解调,恢复出相对码,再经码反变换器变换为绝对码,从而恢复出发送的二进制数字信息。 (2) draw a purge system, confirmed by the supervising principal; (3) the purging of temporary pipe installation, required suppo7 rt and reinforcement, purge outlet setting a fixed bracket, easy to check; (4) at the purging outlet cordon, by the person responsible for supervision; (5) set up a special panel of steam pipe blowing will be attended by a unified command, assigning their tasks; (6) steam blowing the steps are as follows: a. open the trap, vent and drain valve; B. should warm-up before purging; C. check the expansion joints, thermal displacement of the spring hanger and pipe; D. used to purge the vapor temperature should not exceed the tubing operating temperature; E. purge steam should be heated ? cool ? reheating in the order; F. purge lines should be a blow out after blowing the next; G. purge purging of the target of export place polishing the quality of checks, no rust, debris on the targets for qualifying. (7) the washing, sweeping, the qualified (confirmed by the Commissioner and owners) after the pipeline, should recover, recovery procedures with the dismantling steps instead, and blanks are removed, should be put on the official gasket, once the recovery is complete, confirmed by the supervision of site, fill out the purge, rinse records. 2. static equipment installation programme 2.1 installation program setup for static equipment for static equipment, see below. 2.2 the construction preparation 2.2.1 all personnel should be familiar with equipment installation and technical information, including equipment manufacture and Assembly diagrams and component diagrams, equipment installation documentation, special tools, manuals, packing list and process installations, equipment certification, the constructionaaBy-pass, wash downstream parts of the pipeline. (5) take exit of the flushing line with glasses of water, check whether the water color and
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