[问答]

6611C-J05低范围电流测量校准问题

问答对人有帮助，内容完整，我也想知道答案 0 在+ 66312A动态测量直流电源和661xC直流电源用户指南+，图B-1中，它说使用400欧姆电阻来校准6611C电源的低范围电流测量。我认为这包括带有选件J05的6611C（即6611C-J05），一个完全支持/当前制造和销售的661xC系列电源，本指南中未提及（??）。显然事实并非如此。具体来说：当我尝试使用400欧姆电阻（399.3欧姆，+ / - 20 ppm / C，5 W）与电流表串联时，如图B-1（B）所示，并按照校准程序进行在本指南第61页的低范围电流测量中，我获得了大约9.76x伏特的测试电压，这导致电流读数在我的电流表上的24.4xxxx mA附近某处（从内存开始）。当我尝试将此值作为步骤22的0.0244 ... A输入到单位时，我得到OUT OF RANGE错误。此外，当我在电路向电路提供必要的电压后（即在步骤21完成后选择CAL：LEV P1之后）进行校准程序时，设备本身的当前读数也会显示溢出，向我表明：1。设备正在试图提供接近最大电压的电压，该电压将通过电阻负载产生小于20 mA的电流。 2. 400欧姆电阻的值太低，无法用于校准6611C-J05低范围电流测量。基于图B-1中针对661xC系列中其他单元的校准负载电阻值，我认为6611C-J05的正确电阻应为500欧姆，因为该电源的最大电压为10伏。这是应该用于常规6611C的400欧姆电阻器的缩放，其最大电压为8伏特，最大电压为6611C-J05能够提供的10伏特电压。如果有人可以确认此评估或有其他想法，请告诉我。谢谢以上来自于谷歌翻译以下为原文 In the +66312A Dynamic Measurement DC Source and 661xC DC Power Supplies User Guide+, Figure B-1, it says to use a 400 ohm resistor for calibration of the 6611C power supply's Low-Range Current Measurement. I assumed that this includes the 6611C with option J05 (i.e., 6611C-J05), a Keysight fully supported/currently manufactured and sold power supply from the 661xC series that is not mentioned in this guide (??). Apparently this is not the case. To be specific: When I try to use a 400 ohm resistor (399.3 ohms, +/- 20 ppm/C, 5 W) in series with an ammeter as shown in Figure B-1 (B) and follow the procedure for calibration of the Low-Range Current Measurement on page 61 of the guide, I get a test voltage of about 9.76x volts which results in a current reading of somewhere in the neighborhood of 24.4xxxx mA (going from memory here) on my ammeter. When I try to enter this value into the unit as 0.0244... A as part of Step 22, I get an OUT OF RANGE error. Also, as I am going through the calibration procedure after the unit supplies the necessary voltage to the circuit (i.e., after the CAL:LEV P1 is selected after the completion of Step 21), the current reading on the unit itself shows overflow as well, indicating to me that: 1. The unit is trying to supply close to the maximum voltage that would result in a current of less than 20 mA through the resistor load. 2. A 400 ohm resistor is too low of a value to use to calibrate the 6611C-J05 Low-Range Current Measurement. Based on the Calibration Load Resistor values shown in Figure B-1 for other units in the 661xC series, I believe that the correct value for this resistor should be 500 ohms for the 6611C-J05, since this supply has a max voltage of 10 volts. This is a scaling of the 400 ohm resistor that should be used for the regular 6611C with its 8 volts max to the 10 volts max voltage that the 6611C-J05 is capable of supplying. If anyone can confirm this assessment or has other ideas, please let me know. Thanks 0
2018-10-22 16:16:09　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × kingnet_52040 该类别下有 195 个回答。邀请回答 60user7 该类别下有 81 个回答。邀请回答蓝色冰汐该类别下有 45 个回答。邀请回答醉狼工作室该类别下有 41 个回答。邀请回答 ianwhoani 该类别下有 30 个回答。邀请回答 dkhwakd 该类别下有 25 个回答。邀请回答 aaabbb567 该类别下有 23 个回答。邀请回答 e08506806 该类别下有 20 个回答。邀请回答 szzjfyp 该类别下有 18 个回答。邀请回答 sonia87 该类别下有 16 个回答。邀请回答 ningee 该类别下有 16 个回答。邀请回答 xj5548 该类别下有 15 个回答。邀请回答 zouqinxiang 该类别下有 15 个回答。邀请回答 daichuangs 该类别下有 14 个回答。邀请回答 derek88 该类别下有 14 个回答。邀请回答 JST2006 该类别下有 12 个回答。邀请回答 hzmbs2016 该类别下有 12 个回答。邀请回答 hu_wflllllllg21 该类别下有 11 个回答。邀请回答 fichesw 该类别下有 11 个回答。邀请回答 www037 该类别下有 11 个回答。邀请回答举报徐胤相关推荐 • 6611C测量电压回读返回相同的值 1382 • ADC电流检测未校准导致测量值异常如何解决 1944 • 如何测量比微安低的小电流？ 2563 • TRL微波器件测量的校准方法 3072 • ADE7878芯片相位差别较大超出了可校准范围 2108 • 基于计算机的测量仪器进行内部和外部校准的方法介绍 1638 • ADE7878A功率因数补偿超出补偿范围 2185 • 0．05～26．5GHz的微波功率计自动校准系统设计与实现 1320 • 怎样通过感测电阻两端的压降去测量电流 1224 • 阻抗测试的误差及校准如何解决 9401 2个回答

答案对人有帮助，有参考价值 0 您好，从历史角度来看，Keysight（安捷伦/惠普）不维护用户＆amp; 服务手册是最新的，存在或将来可能出现的“特价”的所有滋扰。在早期（HP / Agilent），几乎所有服务/校准都由HP（安捷伦）执行，进一步支持了这一观点。 6611C（和系列）对过驱动低电流范围的测量系统特别敏感。你是对的，因为“J05”Vout最大值是10V，而不是标准仪器的8V。因此，400Ω肯定会在Vout = 10V时吸收过多的电流。由于这是电流精度测量，可以将Vout设置为8V（400Ω负载的预期电压）或获得500Ω电阻并使用10V。请记住，使用本手册的“J05”和“B”部分时，必须考虑许多其他设置/规格“调整”。此致，PeterW 以上来自于谷歌翻译以下为原文 Hello, From a historical perspective Keysight (Agilent/HP) does not maintain the User's & Service Manuals up to date with all the nuisances of the "specials" which exist, or might appear in the future. In the early days (of HP/Agilent), virtually all Service/Cal was performed by HP(Agilent), further supporting this perspective. The 6611C (and family) is particularly sensitive to over-driving the measurement system of the low current range. You are correct, for the "J05" Vout max is 10V, not 8V as is the standard instrument. Therefore, the 400Ω will certainly draw too much current at Vout = 10V. Since this is a Current accuracy measurement, one could either set Vout to 8V (the expected voltage for a 400Ω load) or obtain a 500Ω resistor and use 10V. Please keep in mind that other setup/specifications "adjustments" many have to be considered when working with "J05" and section "B" of the manual. Regards, PeterW

2018-10-22 16:29:49 评论举报许印固

答案对人有帮助，有参考价值 0 na2466 发表于 2018-10-22 13:34 您好，从历史角度来看，Keysight（安捷伦/惠普）不维护用户＆amp; 服务手册是最新的，存在或将来可能出现的“特价”的所有滋扰。在早期（HP / Agilent），几乎所有服务/校准都由HP（安捷伦）执行，进一步支持了这一观点。您好，感谢您的回复。事实上，我能够使用500欧姆电阻校准设备（代替用户指南中提到的400欧姆电阻）。关于您的陈述：>由于这是电流精度测量，可以将Vout设置为8V（400Ω负载的预期电压）或获得500Ω电阻并使用10V。这是一个很好的建议，如果不是因为在校准期间，设备本身选择电压并且非常正确地选择接近其最大值的电压。因此，就负载的电压而言，校准器没有任何选择，因此必须使用500欧姆附近的电阻器。我昨晚做了那个，并校准了我单位的低电流范围。最重要的是，对于想要自己校准单位的其他人来说，用这个（电阻值）更新用户指南会很好。如果无法做到这一点，请至少添加一些特定于6611C-J05的服务说明，以帮助遇到此问题的其他人。在最坏的情况下，这个论坛主题必须足够。以上来自于谷歌翻译以下为原文 Hello and thank you for your response. I was in fact able to calibrate the unit with a 500 ohm resistor (in place of the 400 ohm resistor as mentioned in the User's Guide). With regard to your statement: > Since this is a Current accuracy measurement, one could either set Vout to 8V (the expected voltage for a 400Ω load) or obtain a 500Ω resistor and use 10V. This would be great advice, if it wasn't for the fact that during the calibration, the unit itself selects the voltage and it chooses, quite correctly, a voltage close to its max. So, there isn't any choice for the calibrator in terms of what voltage is applied to the load and therefore one is forced to use a resistor in the neighborhood of 500 ohms. I did just that last night and calibrated the low current range on my unit. The bottom line is that it would be nice to update the User's Guide with this (resistor value) for anyone else that wants to calibrate their unit by themselves. If this is not possible, at least add a service note of some sort specific to the 6611C-J05 to help others that come across this issue. In the worst case, this forum thread will have to suffice.

2018-10-22 16:42:17 评论举报徐胤