E4406A标记有问题

Hi andre - 选择的分辨率带宽有可能在三个跟踪点（中心频率和+/- 35 kHz）之间共享峰值。
您是正确的，E4406A不是频谱分析仪。
它使用FFT来表示频谱跟踪。
此外，频谱测量是有限的。
E4406A的核心价值主张是其无线测量应用和一键式标准兼容测量。
它适用于GSM，EDGE，cdmaOne，1xEV-DO，cdma2000，iDEN，NADC，PDC以及其他用于测量EVM和码域功率的标准。
E4406A还与89601A VSA软件连接，作为灵活的矢量信号分析仪。
您仍然可以使用E4406A作为通用矢量信号分析仪，通过MATLAB或任何其他编程语言与它连接，读出波形I / Q数据，并在您喜欢的任何编程环境中进行后期处理。
您甚至可以将I / Q数据保存为.MAT格式，并在较新的89601B VSA软件中打开它。
以下是您用于从E4406A的基本波形测量中获取波形复杂I / Q数据的SCPI命令：示例从E4406A和PSA E4440A中的窄带数字转换器中获取I / Q数据（注意：我打开时间）
校正）：INST：SEL BASIC //将分析仪设置为基本模式：FREQ：CENTER xxxMHz //设置中心频率：FORM REAL，32 //将返回的数据类型设置为REAL，32：FORM：BORD SWAP //设置
字节顺序为交换：INIT：CONT 0 //将分析仪设置为单次扫描：WAV：BWID：RES 300kHz //设置RBW：WAV：BAND：TYPE FLAT //将滤波器设置为Flattop：CAL：TCOR ON //转动时间校正
on：POW：RF：ATT xx //设置衰减：WAV：SWE：TIME xxx //设置扫描时间：WAV：ACQ：PACK xx //必要时设置数据打包（仅适用于1.2到7.5 MHz之间的RBW）
需要更多的动态范围，虽然这可能不推荐）：READ：WAV0？
//返回I / Q数据现在，将您的I / Q数据保存在.MAT文件中并在89601B软件中打开它，或使用MATLAB执行FFT以显示数据或使用MATAB执行任何类型的后处理
你喜欢。
问候 -



     以下为原文

  Hi andre -

It is possible for the resolution bandwidth chosen that the peak value is shared among three trace points (the center frequency and +/- 35 kHz).  You are correct that the E4406A is not a spectrum analyzer.  It uses FFTs to represent the spectrum trace.  Also, the spectrum measurement is limited.  The E4406A core value proposition was its wireless measurement applications and one-button standards compliant measurements.  It works well for GSM, EDGE, cdmaOne, 1xEV-DO, cdma2000, iDEN, NADC, PDC, and other standards for measuring EVM and code-domain power.  E4406A also interfaced with the 89601A VSA software as a flexible vector signal analyzer.  You can still use E4406A as a general purpose vector signal analyzer by interfacing with it via MATLAB  or any other programming language to read out the waveform I/Q data and to post process this whatever programming environment you like.  You could even save the I/Q data as .MAT format and open it in the newer 89601B VSA software.  Here are the SCPI commands you’d use to grab waveform complex I/Q data out of the E4406A’s Basic waveform measurement:

Example to get I/Q data out of the narrow band digitizer in E4406A and PSA E4440A (note: I turned on time corrections)

:INST:SEL BASIC // Set the analyzer in Basic mode
:FREQ:CENTER xxxMHz // Set center frequency
:FORM REAL,32 // Set the returned data type to REAL, 32
:FORM:BORD SWAP // Set the Byte order to Swap
:INIT:CONT 0 // Set analyzer to single sweep
:WAV:BWID:RES 300kHz // Set RBW
:WAV:BAND:TYPE FLAT // Set filter to Flattop
:CAL:TCOR ON // Turn time corrections on
:POW:RF:ATT xx // Set attenuation
:WAV:SWE:TIME xxx // Set sweep time
:WAV:ACQ:PACK xx // Set data packing if necessary (Only needed for
RBWs between 1.2 and 7.5 MHz where you need
more dynamic range, although this may not be
recommended)
:READ:WAV0? // Returns the I/Q data

Now, save your I/Q data in a .MAT file and open it in 89601B software, or use MATLAB to perform an FFT to display the data or use MATAB to perform any kind of post processing that you like.

Regards -

你好tabbott感谢您的回复，这让我很清楚这些分析仪在市场上没有以非常低的价格出售，而无线电火腿（像我一样）这是一个很好的设备，我认为这个缺点是理所当然的
一个很好的功能，例如功率计功能。
问候，andre ps抱歉双重发布



     以下为原文

  hello tabbott


thanks for your reply
that makes it clear to me

these analyzers come no on the market for a very low price
and for the radio ham (like me) this is a nice piece of equipment and i take this shortcomings for granted
for me there a still nice features eg the powermeter function .

regards ,

andre

ps sorry for the double posting