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"content": "全壳测试包含上电、镜频测试、灵敏度测试、极化测试、功率测试、断电几项,测试中包含的五个核心器件五个核心仪器:频谱分析仪、信号源、开关矩阵、直流电源、示波器。以下是连接示意图:"
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"content": "1. 上电测试"
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"content": "a) 直流电源与信号源与工程机通过TCPIP连接, 连接超时 "
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"content": "b) 信号源设置: 射频输出设置为 OFF。"
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"content": "c) 直流电源设置: OCP 状态设置为 ON; OCP 电流设置为 12A; OVP 电压设置为 32V; 输出电流设置为 6A; 输出电压设置为 28V。"
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"content": "d) 直流电源射频输出设置为 ON, 整机上电, 等待 2000ms。"
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"content": "e) 测试仪循环查询直流电源电流, 并将实测值与待机电流限值3.0A进行比较, 每次循环等待 "
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"content": "f) 当测试次数达到 5 或总时长达到 20 秒后, 停止监控, 将测试结果记录在表中。"
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"content": "a) 直流电源连接电源,电源设置 28V@6A。信号源、频谱分析仪、开关矩阵与工程机通过TCP/IP 连接。"
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"content": "b) 频谱仪设置: Span: 500MHz, RBW: 3MHz, VBW: 3MHz, Sweeptime: 1ms; 信号源设置: 开启脉冲调制, 脉宽 2us, 周期 1ms。整机上电, 等待产品进入低功耗。"
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"content": "c) 选择一个SC频段通道(如SC边), 软件自动配置开关矩阵。信号源功率设置为-25dBm (基于 imagePowerSC 变量)。"
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"content": "d) SC 频段测试点 1 (2.7GHz): 1. 测试仪设置信号源频率为 2.7GHz。频谱仪设置中心频率 2.7GHz, 开启最大值保持 (MAXH), 等待 3s, 使用 Peak 观察信号最高点, 将功率 P1 记录在草稿中 (测量结果存入 imageSpectrumPower1)。2. 信号源设置不变。频谱仪清除迹线 (WRITe), 设置中心频率为 3.84GHz (基于 imageSpectrumFreqSC[0] 变量), 开启最大值保持, 等待 3s, 使用 Peak 观察信号最高点, 将功率 P2 记录在草稿中 (测量结果存入 imageSpectrumPower2)。"
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"content": "e) SC 频段测试点 2 (6.2GHz): 1. 测试仪设置信号源频率为 6.2GHz (基于 SCStopFreq 变量)。频谱仪清除迹线, 设置中心频率 6.2GHz, 开启最大值保持, 等待 3s, 读取峰值功率 P1。2. 信号源设置不变。频谱仪清除迹线, 设置中心频率为 5.04GHz (基于 imageSpectrumFreqSC[1] 变量), 开启最大值保持, 等待 3s, 读取峰值功率 P2。"
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"content": "g) X 频段测试点 1 (8GHz): 1. 测试仪设置信号源频率为 8GHz (基于 XStartFreq 变量)。频谱仪清除迹线, 设置中心频率 8GHz, 开启最大值保持, 等待 3s, 读取峰值功率 P1。2. 信号源设置不变。频谱仪清除迹线, 设置中心频率为 9.44GHz (基于 imageSpectrumFreqX[0] 变量), 开启最大值保持, 等待 3s, 读取峰值功率 P2。"
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"content": "h) X频段测试点2(12GHz): 1. 测试仪设置信号源频率为12GHz(基于XStopFreq变量)。频谱"
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"content": "i) 测试软件自动计算 (P1 - P2), 得到镜频抑制比 (存入 imageRejection)。重复步骤 c) 至 h) 直到所有选定通道测试完毕。将所有镜频抑制比结果记录在表中。"
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