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[问答]

可以用N6762电源代替66332A作为动态电流吗

嗨,我正在使用66332A电源来测量PA的动态电流。
但是,当我将模式从低变为高时,当我进行CW扫描时,我看到4 mA电流跳变。
如果我连接DMM,我可以看到电流没有跳跃。
我不确定它是否是设备限制。
我用N6762替换了这些耗材并没有得到当前的跳跃。
然而,该测试是针对CW的。
您能否告诉我是否可以完全用N6762替换66332a进行调制信号电流测量?
有没有我可以参考的文件?
谢谢

以上来自于谷歌翻译


     以下为原文

  Hi,

I am using 66332A power supplies for the dynamic current measurement of PA's. However, I am seeing 4 mA current jump when I do a CW sweep when it changes the mode from Low to high. If I connect DMM in series, I could see there is no jump in the current. I am not sure if it is device limitation. I replaced the supplies with N6762 and didn't get the current jump. This test was however for the CW. Could you tell if I can replace the 66332a completely with N6762 for modulated signal current measurements as well? Is there any documentation I can refer to?

Thanks  

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张倩

2019-1-2 17:06:25
对于需要调制信号并理想地进行电流测量的应用,PS应具有良好的编程响应和良好的电流测量带宽。
因此,您观察到的行为很可能是由于66332A上的编程响应,N6762A具有更好的编程响应。
N6762A只能提供3A最大值,而下沉操作不可编程。
您的应用是否需要在6V时超过3A或在20V时需要1A?
如果没有,我们还有另一款PS系列N6782A,它具有比N6762A更好的编程响应,具有独特的测量能力。
我们为N6782A提供的是精密动态测量,它同时利用3个测量范围。
这将给出PA的动态电流的非常详细的视图。
请参阅第35页的链接:[http://cp.literature.agilent.com/litweb/pdf/N6700-90001.pdf]谢谢保罗

以上来自于谷歌翻译


     以下为原文

  For applications that require modulated signals and making current measurements ideally PS should have good programming response and good bandwidth on current measurement.
So the behavior that you are observing is most likely due to programming response on 66332A, with N6762A it has better programming response. The N6762A can only source 3A maximum and sinking operations is not programmable. Does your application require more than 3A at 6V or 1A at 20V? if not we have another PS series N6782A which has even better programming response than N6762A with a unique measurement capability. What we offer with N6782A is precision dynamic measurement which takes advantage of 3 measurement ranges simultaneously. This will give a very detailed view of dynamic current of your PA. Refer to page 35 on link:[http://cp.literature.agilent.com/litweb/pdf/N6700-90001.pdf]
Thanks 
Paul
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贾玲

2019-1-2 17:13:01
引用: jinxibin 发表于 2019-1-2 10:55
对于需要调制信号并理想地进行电流测量的应用,PS应具有良好的编程响应和良好的电流测量带宽。
因此,您观察到的行为很可能是由于66332A上的编程响应,N6762A具有更好的编程响应。
N6762A只能提供3A最大值,而下沉操作不可编程。

嗨保罗,谢谢你的回复。
非常感激。
我们的应用不需要超过3A电流,因此我们首先要评估N6762A在编程响应方面是否良好。
通过66332A和N6762A的SCPI手册,看起来配置和测量的命令是相同的。
但是,我无法从N6762A获得电流阵列,但我通过66332A得到它。
我对66332A脉冲电流测量所遵循的步骤如下 - 1)将仪表设置为ACDC - SENS:CURR:DET ACDC(找不到N6762A的命令)2)设置为触发脉冲 - TRIG:ACQ:SOUR INT(找不到)
命令N6762A)3)获取当前读数 - SENS:FUNC“”CURR“”(也适用于6762A,不确定是否需要发送其他命令)4)设置采样率 - SENS:SWE:TINT n(命令是
相同的6762A)5)设置扫描中的测量样本数 - SENS:SWE:POIN n(6762A的命令相同)6)获取数据阵列。
- MEAS:ARRAY:CURR?
(6762A的命令相同)如果上述步骤在测量和与之相关的SCPI命令方面是否正确,请告诉我?
谢谢。

以上来自于谷歌翻译


     以下为原文

  Hi Paul,

Thanks for your reply. Much appreciated. 

Our applications don't require more than 3A current so we want to first evaluate if N6762A would be good in terms of programming response. Going through the SCPI manual of 66332A and N6762A, it looks like some commands are the same to configure and measure. However, I am not able to get array of current from N6762A but I get it through 66332A. The steps I follow for 66332A pulse current measurement are as follows -
 
1) Set Meter to ACDC - SENS:CURR:DET ACDC (Cannot find command for N6762A)
2) Set to trigger on pulse - TRIG:ACQ:SOUR INT (Cannot find command for N6762A)
3) Acquire current reading - SENS:FUNC ""CURR"" (Works with 6762A as well, not sure if need to send some other command)
4) Set sample rate - SENS:SWE:TINT n (Command is same for 6762A)
5) Set number of measurement samples in sweep - SENS:SWE:POIN n (Command is same for 6762A)
6) Get data array. - MEAS:ARRAY:CURR? (Command is same for 6762A)

Could you please tell me if the above steps are correct in terms of measurement and SCPI commands associated with it?

Thanks.
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张倩

2019-1-2 17:23:49

有关数字化示例链接的信息,请参阅第336页:[http://cp.literature.agilent.com/litweb/pdf/N6700-90902.pdf]与66332A相比,N6762A有几种不同的程序功能。
1-在N6762A上,我们没有提供方法设置前面板测量交流/直流。
我们只能测量交流/直流电流阵列或电流阵列。
2- TRIG:ACQ:SOUR INT命令将在N6762A上用TRIGger代替:ACQuire:SOURce CURR,(@),TRIGger:ACQuire:CURRent [:LEVel],(@)参考上面的链接以获取更多细节。

以上来自于谷歌翻译


     以下为原文

  For Refer to page 336 for digitizing example link: [http://cp.literature.agilent.com/litweb/pdf/N6700-90902.pdf]
There are several program function that are different on N6762A compared to 66332A. 1- On the N6762A we don't provide a way set front panel measure ac/dc. We only have capablity to measure ac/dc current array or current array. 2- TRIG:ACQ:SOUR INT commands would be substituted on N6762A with TRIGger:ACQuire:SOURce CURR, (@) , TRIGger:ACQuire:CURRent[:LEVel] , (@) refer to link above for further details.
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