对数、线性文件选取
Logarithmic, linear file selection
3.2，其他设置 Other setting
开始频率，结束频率，扫描点数，衰减器等参数设置和对数扫描一样进行设置。 对数扫描的动态范围比较大，线性扫描的动态范围比较小。以下为对数扫描和线性扫描的曲线对比
Start frequency, the end frequency scan points, attenuator, parameter setting and logarithmic sweep as set.
Dynamic range logarithmic sweep is relatively large, relatively small dynamic range linear scanning. The contrast curve of logarithmic sweep and linearscanning
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对数线性扫描曲线对比
Comparison of log linear scanning curve
4，驻波比(SWR)测量 SWR measure
4.1，进入测量模式 Enter swr mode
连接好驻波电桥。电桥输入接NWT扫频仪RF输出，电桥输出接NWT扫频仪RF输入， 选择SWR测量模式。
Connect the bridge. The bridge input is connected to the NWT scanner RF output, the bridge output is connected with the NWT input frequency sweep meter RF, Select the SWR measurement mode
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测量模式选择
Test mode select
4.2，频率设置 Frequency setting
频率设置和对数扫描模式相同。输入开始频率，结束频率，点数，点连续或单次测量即可，直接读出SWR。需要校准后测量才准确。
图片是测量某U低天线的曲线，可以看出，谐振点在430M左右，驻波约1.1，相应的曲线极限数值可以从文本区读出。
Set the frequency and log the same scanning pattern. Enter the start endpoints, frequency, frequency, continuous or single measurement can be read directly, SWR. The need for calibration of measuring is accurate.
The picture is a measure of a U low antenna curve, can be seen, the resonant point at about 430M, standing about 1.1, the limit value curvecorresponding to read from a text area.
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测量出来的天线曲线
The measured antenna curve
文本区显示的驻波最大，最小值
The text area shows the standing wave maximum, minimum
5，带电缆的天线驻波比测量
Antenna measurement with cable in Bobbi
5.1进入测量模式
Enter the measurement model
选择SWR_Ant,即可进入带电缆的天线驻波比测量。注意，该模式不用连接
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天线的电缆，和SWR的测量连接方式一样，只是用软件估算连接电缆后的驻波比。
Select the SWR_Ant, you can enter the antenna measurement with cable in Bobbi. Note, this mode without cable to connect the antenna, measurement and SWR connection, just using the software estimation in Bobbi after the cable is connected.
选择模式 Select mode
5.2，频率设置 Frequency setting
频率设置和SWR模式相同。其中还需要输入100m长的电缆衰减量以及电缆长度。 Set the frequency and SWR models with the same. There is still the need toenter the 100m long cable attenuation and cable length
5.3，测量曲线
Measuring curve
设置好电缆参数
Setting the cable parameters
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