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适当的悲哀可以表示感情的深切,过度的伤心却可以证明智慧的欠缺。
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回收仪器仪表 回收SMW200A信号发生器
Frequency Reference
Accuracy ± [(time since last adjustment x aging rate) + temperature stability + calibration accuracy]
Aging rate ± 3 x 10–8 / year
Temperature stability
Full temperature range ± 4.5 x 10–9
Achievable initial calibration accuracy ± 3.1 x 10–8
Example frequency reference accuracy
1 year after last adjustment
= ± (3 x 10–8 + 4.5 x 10–9 + 3.1 x 10–8)
= ± 6.6 x 10–8
Residual FM
(Center frequency = 1 GHz
10 Hz RBW, 10 Hz VBW)
≤ (0.25 Hz x N) p-p in 20 ms nominal
See band table above for N (LO multiple)
频率读出精度(开始,停止,中心,标记)
±(标记频率X频率基准精度+0.10%×SPAN + 5%×RBW + 2 Hz + 0.5×水平分辨率2)
标记频率计数器
精度±(标记频率X频率基准精度+0.100赫兹)
计数器精度±(频率x基准频率精度+0.141赫兹)
计数器分辨率0.001赫兹
频率跨度(FFT和扫频模式)
范围0赫兹(零跨度),10赫兹到仪器的**da频率
分辨率2赫兹
准确度
扫快速傅立叶变换
±(0.1%×跨度+水平分辨率)3
±(0.1%×跨度+水平分辨率)3
Frequency Readout Accuracy (Start, Stop, Center, Marker)
± (marker frequency x frequency reference accuracy + 0.10% x span + 5 % x RBW + 2 Hz + 0.5 x horizontal resolution2
)
Marker Frequency Counter
Accuracy ± (marker frequency x frequency reference accuracy + 0.100 Hz)
Delta counter accuracy ± (delta frequency x frequency reference accuracy + 0.141 Hz)
Counter resolution 0.001 Hz
Frequency Span (FFT and Swept Mode)
Range 0 Hz (zero span), 10 Hz to maximum frequency of instrument
Resolution 2 Hz
Accuracy
Swept
FFT
± (0.1% x span + horizontal resolution)3
± (0.1% x span + horizontal resolution)3
回收仪器仪表 回收SMW200A信号发生器
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