频率
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频率范围
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U3741频谱分析仪
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9 kHz to 3 GHz.
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10 MHz to 2.2 GHz (with the OPT.15 installed)
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预放大:
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10 MHz to 3 GHz
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10 MHz to 2.2 GHz (with the OPT.15 installed)
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同步频率范围:
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9 kHz to 3 GHz
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U3751频谱分析仪
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9 kHz to 8 GHz
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频率波段:
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9 kHz to 3.1 GHz (band 0), 3 GHz to 8 GHz (band 1)
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预放大:
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10 MHz to 8 GHz
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频率读出范围
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± (marker read value x frequency reference accuracy + span x span accuracy + residual FM)
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基准频率稳定度
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老化率:
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±2x 10-6/year
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温度系数:
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±2.5x10-6(0 to 50°C)
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频率计:
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At a signal level S/N > 50dB
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分辨率
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1 Hz to 1 kHz
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精度:
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± (counter read value x frequency reference accuracy + residual FM)
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频率稳定性: 残留FM (零扫):
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< 60 Hzp-p/100 ms (internal frequency reference)
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扫频宽度
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范围:
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5 kHz to Full, zero span 1 kHz to Full, zero span (with the OPT.70 installed)
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精度:
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<±1%
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频谱纯度:
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-85 dBc/Hz (offset 10kHz, span < 200kHz
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分辨率带宽:
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范围:
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U3741频谱分析仪
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100 Hz to 1 MHz(1 to 3 steps) 30 Hz to 1 MHz (with the OPT.70 installed)
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U3751频谱分析仪
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100 Hz to 3 MHz (1 to 3 steps) 30 Hz to 3 MHz (with the OPT.70 installed)
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精度:
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<±12%
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视频带宽:
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10 Hz to 3 MHz (1 to 3 steps)
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扫频
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扫描时间
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设置范围
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20 ms to 1000 s (spectrum mode) 50µs to 1000s(zero span)
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精度:
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<±2% (zero span)
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扫频方式:
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Continuous, single, gated
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触发功能 触发源:
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Free run, video, external, IF
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幅度范围
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测量范围:
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Noise level 10 +30 dBm Noise level to 134 dBµV (with the OPT.1S installed)
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最大安全输入电平:
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Attenuator ≥ 10 dB
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预放大 OFF:
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+ 30 dBm, 134 dBµV (with the OPT.15 installed)
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预放大 ON:
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+ 13 dBm, 120 dBµV (with the OPT.15 installed)
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U3741频谱分析仪
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±50 VDCmax.
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U3751频谱分析仪
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±15 VDCmax.
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输入阻抗范围:
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0 to 50dB(10dB steps)
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显示范围:
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100/50/20/10/5 dB. linear
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刻度单位:
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dBm, dBmV, dBµV, dBµVemf, dBpW, W, V
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参考电平设置范围:
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-140 to +40 dBm -31.2 to 148.8 dBuV (with the OPT.15 installed)
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检测模式:
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Normal, Positive peak. Negative peak. Sample, RMS, and Average
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幅度精确度
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校准信号
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频率:
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20MHz
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电平:
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-20 dBm (75 Ω, with the OPT.15 installed)
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精度:
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±0.3 dB, ±0.4 dB (with the OPT.1S installed)
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刻度显示精度
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对数刻度:
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±0,5 dB/10 dB, ±0.5 dB/80 dB. ±0.2 dB/1 dB
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总体幅度
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精度:
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After calibration, with the pre-amp OFF, and at a temperature ranging from 20 to 30ºC
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U3741频谱分析仪
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Reference level 0 dBm, input signal level -10 to -50 dBm ±1.0 dB(9kHz to 3GHz) ±0.8 dB(10MHz to 3GHz)
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加装OPT.15 选件:
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Reference level 108.8 dBµV input signal level 98.8 to 58.8 dBµV ±2.1 dB (9 kHz to 2.2 GHz) ±0.9 dB (10 MHz to 2.2 GHz)
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U3751频谱分析仪
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Reference level 0 dBm,
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input signal level -10 to -50 dBm Image suppression OFF ±1.5 dB (9 kHz to 10 MHz) ±0.8dB(10 MHz to 3.1 GHz) ±1.0dB(3.1 GHz to 8 GHz)
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动态范围
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显示的平均噪声水平:
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Reference level < -45 dBm (63.8 dByV, with the OPT.15 installed) Resolution bandwidth 100 Hi
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U3741频谱分析仪
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预放大 OFF:
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-123 dBm + 2f (GHz) dB (f < 2.5 GHz); -123 dBm + 2.5f (GHz) dB (f ≥ 2.5 GHz); -12 dBuV + 2f (GHz) dB (f ≤ 2.2 GHz, with the OPT.15 installed)
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预放大 ON:
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-138dBm + 3f (GHz)dB; -27dBµV + 3f (GHz)dB(with the OPT.15 installed)
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U3751频谱分析仪
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Frequency 10 MHz to 8 GHz
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预放大 OFF:
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-123 dBm + 2f (GHz) dB (f ≤ 3.1 GHz); -122 dBm + 1f (GHz) dB (f ≥ 3 GHz)
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预放大 ON:
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-138 dBm + 3f (GHz) dB (f ≤ 3.1 GHz); -139 dBm + 1.3f (GHz) dB (f ≥ 3 GHz)
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1 dB 增益压缩
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U3741频谱分析仪
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Frequency > 20 MHz
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预放大 OFF:
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> -5 dBm; > 102 dBµV (with the OPT.15 installed)
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预放大 ON:
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> -25 dBm; > 82 dBµV (with the OPT.15 installed)
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U3751频谱分析仪
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Frequency > 20 MHz
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预放大 OFF:
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> -8 dBm
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预放大 ON:
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> -25 dBm
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二次谐波失真
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U3741频谱分析仪
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< -70 dBc(pre-Amp OFF, Frequency > 20 MHz; Mixer input level -30 dBm (77 dBµV, with the OPT.15 installed))
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U3751频谱分析仪
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< -70 dBc(pre-Amp OFF, Frequency > 200 MHz, Mixer input level -40 dBm); <-75 dBc (typ., Pre-Amp OFF. Frequency > 300 MHz, Mixer input level -30 dBm)
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三阶互调失真
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U3741频谱分析仪
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< -60 dBc(pre-Amp OFF, Mixer input level -20 dBm (88.8 dBµV, with the OPT.15 installed); Frequency > 10MHz, 2 signal separation > 200kHz)
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U3751频谱分析仪
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< -50 dBc(pre-Amp OFF, Mixer input level -20 dBm, Frequency 10MHz to 8GHz, 2 signal separation > 200kHz)
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Image/multiple/out of band response:
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< -60 dBc(pre-Amp OFF, Mixer input level -20 dBm (88.8 dBµV, with the OPT.15 installed),Image suppression ON (U3751))
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残留响应
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U3741频谱分析仪
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< -90 dBm (Frequenty > 1 MHz , Pre-Amp OFF); < 21 dBµV (with the OPT.15 installed)
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U3751频谱分析仪
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< -80 dBm (Frequency 10 MHz to 8 GHz. Pre-Amp OFF)
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一般参数
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工作环境:
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Ambient temperature: 0 to + 50°C Humidity: RH 85% or less (no condensation)
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储存环境:
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-20 to +60°C, RH 85% or less
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交流电源输入:
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Automatic switching to 100AC or 200 VAC; 100V: 100 to 120V, 50/60 Hz 200 V: 220 to 240 V, 50/60 Hz
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直流电源输入:
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DC +11V to +17V
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功耗:
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100 VA or less (AC operation); 70 W or less (DC operation)
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重量体积
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U3741频谱分析仪
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5kg or less (without option)
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U3751频谱分析仪
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5.6 kg or less (without option)
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(W x H x D):
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Approx. 308 x 175 x 209 mm (not including protruding parts) Approx. 337 x 190 x 307 mm(including the handle and feet)
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