U1620A风扇噪音

您好，我买了U2702示波器，我听到了这种可怕的声音;）我打开了示波器的后盖，并在风扇和框架顶部放置了双面透明胶带。
现在听起来好多了。
这个小风扇工作得很好，但它很吵。



以下为原文

Hello,

i bought U2702 scope and i heard this horrible sound ;)
I open the back cover of scope and put 2-sided scotch-tape between top of fan and framework.
Now it sounds much quiter. This little fan works well, but it's noisy.

当然，这些是两种不同的产品，我不确定它们是否使用相同的风扇。
但是你提出了一个有趣的可能性，即由于某处的微小公差变化，风扇可能会在外壳上振动。
由于它是一个新单元，我不想打开它并可能使保修失效。
也就是说，在他们的服务人员同意这是不对的之后，我将我的设备送回了安捷伦。
已经有一个多月的时间等待修复，显然他们不得不订购一个本周应该到达的新单位。
显然我不是唯一一个有这个问题的人，所以希望安捷伦能够在生产中解决这个问题。
希望新的听起来更好:-)。
总之 - 如果有人拥有Agilent U1620A（或类似的示波器型号） - 并且您听到嘈杂的风扇，您现在就知道这是不正常的。
似乎该单元（以及可能的其他手持产品）的标准修复方法是产品交换，因为除了可能的显示器，电池等之外，内部可修复的组件非常少。



以下为原文

Of course, these are two different products and I'm not sure if they use the same fan or not. But you raise an interesting possibility that the fan could be vibrating against the case due to a slight tolerance variation somewhere. Since it was a new unit, I didn't want to open it and possibly void the warranty.

That said, I sent my unit back to Agilent after their service personnel agreed this wasn't right. It's been over a month waiting for a fix, and apparently they had to order a new unit which should arrive this week. Apparently I'm not the only one with this issue, so hopefully it's something that Agilent will address in production.

Hopefully the new one sounds better :-).

In summary -- if anyone owns an Agilent U1620A (or similar scope model) -- and you hear a noisy fan, you'll now know this is not normal. It seems that the standard repair method for this unit (and possibly other handheld products) is a product swap, as there are very few internally repairable assemblies other than possibly the display, battery, etc.

你收到了吗？
噪音消失了吗？
我的范围也有同样的问题。
我获得了退货授权，所以我买了第二个范围。
这个声音略微响亮，随着单位的旋转而变化，正如您所描述的那样。
我想知道所有范围是否都是这样的？
我打电话给安捷伦技术支持，并被告知这是不正常的。
安捷伦的质量如何？
有没有人没有这个问题？



以下为原文

Did you get it back? Is the noise gone?

I have the same problem with my scope. I got an authorization to return it so I bought a second scope. This one has slightly louder noise that changes as the unit is rotated, exactly as you had described.

I wonder if all scopes are like this? I called Agilent Tech support and was told this is not normal. What's going on with Agilent quality? Is there anyone out there without this problem?

嗨Glowits，非常感谢您的图片和详细的回复。
最初，我认为风扇叶片可能正在接触风扇壳，但这只是另一种猜测。
一旦预热，第一台机组的风扇噪音在大约5分钟后肯定会降低，几乎达到我认为可接受/合理的水平（只是风扇噪音，听起来不像刀片触及的东西）。
就像你一样，我希望我可以打开它，但出于同样的原因你已经说过，我不想这样做。
第二个单元比第一个单元略差，所以我肯定会回到第二个单元，并考虑如何处理第一个单元。
我今天打电话给安捷伦再次讨论。
我在安捷伦采访过的人也很出色。
在业务方面，他打电话给某人，后者又叫纽瓦克授权我回来，而我还在接听电话。
我对纽瓦克的退货政策不满意。
正如我发现的那样，如果没有任何问题，您可以退回设备以获得全额退款。
但如果存在缺陷，则必须进行保修维修，他们通常不会退还您的款项。
安捷伦的工作人员安排全额退款，因此我购买了另一个，不幸的是，它有同样的问题。
你接下来打算怎么办？
保持范围？



以下为原文

Hi Glowits,
Thank you very much for the picture and your detailed response. Initially, I thought the fan blade might be touching the fan case but that's just another speculation. The fan noise on the first unit definitely gets lower after about 5 minutes once it warms up, almost to what I would consider an acceptable/reasonable level (just fan noise that doesn't sound like blade is touching something).

Just like you, I wish I could open this up but for the same reason you have stated, I don't want to do that.

The second unit is slightly worse than the first one so I will be returning the second one for sure, and think about what to do about the first unit. I will call Agilent today and discuss again. The person I spoke to at Agilent was also outstanding. He called someone on the business side, who in-turn, called Newark to authorize my return, while I was still on the call.

I was not pleased with Newark's return policy. As I found out, you can return an equipment for full refund if there is nothing wrong with it. But if there is a defect, it has to go to warranty repair and they will not normally give your money back. The guys at Agilent arranged for full refund so I purchased another one, which unfortunately has the same problem.

So what are you going to do? Keep the scope?

杰夫，几点...... 1）你很幸运，你有权将其中一个单位归还给经销商。
在我的情况下，我检查了我们的经销商，他们没有库存，并被告知我必须通过安捷伦的保修处理它。
在我的情况下，本来应该花费大约两个星期的时间花了大约一个月，更不用说大约50美元的邮资和保险现金返还，即使它是DOA。
我后来才了解到，通常这些设备是交换的，而不是维修的 - 所以安捷伦不得不从马来西亚的工厂订购一个新设备 - 基本上我再次排队等候。
然后我被告知（大约一个月后）会有另一个延迟（可能长达2-4周）。
毋庸置疑，我对未使用该装置1-2个月的前景感到不满，特别是在我等了5个星期才交付第一个装置后，这个装置已经停产了。
那时，我升级了我的修理单，安捷伦就可以为我分配一个单元，在我升级后的几天内发货。
鉴于过多的维修延迟，我要求重置保修时钟，他们也这样做了。
再一次，一个好公司在质量问题上做得好的一个例子，所以我很感激。
2）至于我是否会保留这个，此时，我确实需要范围，我打算保留它。
也就是说，我对粉丝问题仍然不满意。
我在周末使用示波器，风扇噪音确实很大。
有时只是坐在使用集成支架的地方 - 风扇会变得噪音更大，噪音更小。
即使只是略微移动位置或倾斜几度变化也会使其振动/嘎嘎作响。
在我的情况下，我从来没有听过我称之为粉丝的“软呼呼”。
它总是听起来有点“振动”，好像有东西正在接触风扇叶片（或在附近振动）。
我仍然怀疑黑色接地电缆或相邻的风扇电源线，以及是否有可能由于风扇与这些电缆接近而导致噪音的情况。
虽然这似乎不会影响设备的运行，但它并没有像您期望的那种昂贵的产品那样花费数千美元。
我仍然希望安捷伦工程团队能够深入研究这个问题。
如果事实证明机箱内没有任何东西振动（例如电缆等），而这正是风扇本身的构建方式，那么我会花一两两美元来寻找一个没有这个问题的更好的风扇。
从长远来看，客户会更快乐，返回的单位更少（对于所有各方来说都是非常昂贵的），并且单位质量的印象会上升。
还有一种有趣的心理效应。
如果单位“听起来”破碎或边缘，那么你也倾向于不信任测量。
我意识到这不符合逻辑 - 但质量（好的或坏的）会产生围绕产品的光环，超越任何一个问题，你开始用更批判的眼光质疑其他事情。
也有可能是一批坏的粉丝或者这个零件有多个供应商。
由于这些产品在具有许多其他测试设备的生产环境中进行测试，因此生产人员甚至可能无法实现（或听到）风扇噪音，因为它会被周围的测试设备掩盖。
但是当在工作台上使用或站在低环境噪音的电气面板上时，风扇噪音会更加明显。
如果您也将安捷伦支持人员指向此主题，也许我们可以让工厂的某个人更认真地看待这一点，而不是将其视为非问题。
如果有些客户（比如我们）注意到这个问题涉及多个单位，那么它肯定值得进一步探索。
这可能不是他们的首要问题，但我认为应该是可以解决的问题。
在某些时候，我可能只是打开我的，并尝试不同地修饰电缆，看看是否有帮助。
这不是我想要做的，但我不想与安捷伦交换单位以找到一个“好的”，直到明确了解导致可变风扇噪音的原因。
请随时告诉我们您的情况，以便我们都可以学习并分享最新信息。
如果我能找到一种方法来制作高质量的录音，我可能会试试。
我尝试过一次使用我的iPhone，但它并没有出色。
我必须拿出别的东西......



以下为原文

Jeff,

A few points...

1) You are fortunate that you got an authorization to return one of the units to the reseller. In my case, I checked with our reseller and they had no inventory and was told I would have to process it through Agilent's Warranty. In my case, what originally was supposed to take about two weeks took about one month, not to mention about $50 out-of-pocket in postage and insurance to return it, even though it was DOA. I later learned that typically these units are swapped, not repaired -- and so Agilent had to order a new one from the factory in Malaysia -- and basically I waited again in the queue. I was then told (after about one month) that there would be another delay (maybe up to 2-4 weeks). Needless to say, I wasn't happy about the prospect of being without the unit for 1-2 months, particularly after I waited 5 weeks for delivery of the first unit, which was on back-order. At that point, I escalated my repair ticket and Agilent was able to allocate a unit to me, which shipped within a few days of my escalation.

Given the excessive repair delay, I requested that the warranty clock be reset, which they also did. Again, an example of a good company making good on a quality issue, so I'm appreciative.

2) As to whether I'll keep this one or not, at this point, I do need the scope and I plan to keep it. That said, I'm still less than satisfied with the fan issue. I was using the scope over the weekend and the fan noise was really variable. Sometimes just sitting perched using the integrated stand -- the fan would get noisier then less noisy. Even just moving the position slightly or a few degree change in tilt would cause it to vibrate/rattle more. In my case, I never just hear what I would call a "soft whirring" of the fan. It always sounds a bit "vibratory" as if something is touching the fan blade (or vibrating nearby). I'm still suspicious of the black grounding cable or the adjacent fan power cable and whether there could be a condition there that causes this noise due to some proximity of the fan with those cables. Although this doesn't appear to affect the operation of the unit, it just doesn't exude the kind of Agilent quality that you'd expect from a product that costs several thousand dollars. I still hope that the Agilent engineering team looks into this to get to the bottom of it.

If it turns out that nothing is vibrating inside the case (e.g. cables, etc) and it is just the way the fan itself is built, I would invest another dollar or two to find a better fan that doesn't have this issue. In the long run, customers will be happier, with fewer returned units (which is otherwise very expensive for all parties), and the impression of the quality of the unit will go up. There is also an interesting psychological effect. If the unit "sounds" broken or marginal, then you tend to distrust the measurements too. I realize it's not logical -- but quality (good or bad) creates an aura around the product that transcends any one issue and you begin to question other things about it with a more critical eye.

It's also possible that there is a bad batch of fans or that there are multiple suppliers for this part. And since these are being tested in a production environment with lots of other test equipment, the production people may not even realize (or hear) the fan noise as it would be masked by the surrounding test equipment. But when used on a workbench or while standing at an electrical panel with low ambient noise, then the fan noise is much more obvious.

If you also point your Agilent support person to this thread, perhaps we can get someone at the factory to take a more serious look at this and not dismiss it as a non-issue. If some customers (like us) are noticing this issue with multiple units, then it's certainly worthy of further exploration. It may not be their top issue, but its one that should be resolvable I would think. At some point, I may just open mine up and try to dress the cables differently to see if that helps. It's not what I want to do, but I don't want to keep swapping units with Agilent to find a "good one" until it's understood definitively what's causing the variable fan noise.

Please keep us posted on your situation so we can all learn and share the latest. If I can figure out a way to make a quality audio recording, I might try that. I tried it once using my iPhone, but it didn't come out too well. I'll have to come up with something else...

所有，似乎至少有一小部分遭受了风扇噪音问题。
我们“在这里”的人耳语安静。
除非我将耳朵直接放在后面板上，否则我听不到任何声音。
如果设备在60天内交付，则应将这些产品退回给您购买示波器的授权Agilent分销合作伙伴，作为“缺箱缺陷”（OBD）。
您可以在此处找到授权经销商列表：www.agilent.com/find/distributor让他们打开设备并打开设备电源，以便在发送新设备之前查看是否有噪音。
如果没有库存，那么经销商应该重新订购一个，但通常比修理时间长。
维修的周转时间通常为2周。
如果超过60天（或重新订购需要更长时间），它们可以在保修期内进行维修（这些，安捷伦的电子测量组中的所有其他产品，SN现在都有3年保修标准）。
您可以在此处查看保修：www.agilent.com/find/warranty您需要致电当地的安捷伦商务中心。
您可以在@ www.agilent.com/find/contactus上找到此信息，确保正确设置您的位置。
维修的周转时间通常为2周。
安捷伦将研究这个问题。
不过，请不要期望通过论坛进行任何更新。
免责声明：为了获得更可靠的响应，您应该考虑致电当地的安捷伦技术呼叫中心。
安捷伦论坛在“可用”的基础上进行监控，并不一定是解决技术问题的最快方式。



以下为原文

All,

It seems there are at least a handful suffering the fan noise problem.

The ones we have “here” are whisper quiet. I cannot hear anything form them unless I put my ear right up to the rear panel.

These should be returned to the authorized Agilent Distribution partner from whom you purchased the oscilloscope as an “Out of Box Defect” (OBD) IF the unit has been delivered in less than 60 days. You can find a list of authorized distributors here: www.agilent.com/find/distributor Have them open the unit up and power it on to see if it is noisy or not before sending out a new unit. If there is no stock, then the distributor is supposed to re-order one, but often that is longer than the time to repair. The turnaround time on a repair is typically 2 weeks. If it is past 60 days since it was delivered (or re-ordering will take longer), they can be repaired under warranty (these, and everything else from Agilent’s electronic measurements group that has an SN now has a 3 year warranty standard). You can check your warranty here: www.agilent.com/find/warranty You will need to call your local Agilent business center. You can find this info on the @ www.agilent.com/find/contactus, being sure to set your location correctly. The turnaround time on a repair is typically 2 weeks.

Agilent will be looking into this problem. Please do not expect any updates via the forums, though.

Disclaimer: For more reliable response, you should consider calling your local Agilent Technical Call Center. The Agilent Forums are monitored on an "as available" basis, and aren't necessarily the fastest way to get technical questions answered.

谢谢@ksmith。
我已按照您的所有建议（与安捷伦支持团队合作）但不愿再次返回，直到进行明确的工程评估并实施（假设发现某些缺陷）。
作为参考，我发布了一个30秒的音频剪辑，所以我们都可以听到同样的事情。
这将有助于减少对“应该”听起来的主观描述。
我的新单元比第一个更好，听起来像这样：https：//buildera.box.com/s/zxt37bn4mb00n405k2b2我用我的iPhone录制了这个，所以音频不是很响。
请调整此剪辑的扬声器音量。
作为参考，SN为MY54220029。
在这个30秒的剪辑中，我手里拿着单位（双手），附近有iPhone麦克风 - 所以它不会在任何表面上振动。
这是在空中。
我以不同的角度和速度旋转装置，然后保持稳定......然后旋转等等。也许这有点帮助所以我们都听到同样的事情。



以下为原文

Thanks @ksmith.

I've followed all your suggestions (working with the Agilent support team) but am reluctant to return it again until a definite engineering assessment is made and implemented (assuming something is found to be defective). For reference, I'm posting a 30-second audio clip so we can all hear the same thing. This will help to reduce subjective descriptions of what it "should" sound like. My new unit, which is better than the first one, sounds like this: https://buildera.box.com/s/zxt37bn4mb00n405k2b2

I recorded this with my iPhone, so the audio isn't very loud. Please adjust your speaker volume for this clip. For reference, the SN is MY54220029.

During this 30-second clip, I am holding the unit in my hands (both hands) with the iPhone microphone nearby -- so it's not vibrating on any surface. This is in the air. I rotate the unit at different angles and speeds and then hold it steady....then rotate, etc. Maybe this helps a little so we all hear the same thing.

这就是我的望远镜的粉丝听起来像。
凯文，我上周在电话里跟你说过。
谢谢您的帮助。
安捷伦的每个人都很棒，但这个产品令人失望。
我一直很惊讶HP / Agilent测试设备多年来的工作情况，总是比指定的精度要好得多。
例如，我的安捷伦频谱分析仪非常精确，几乎可以将其用作频率标准。
如果规格为1ppm，则其性能为0.01ppm。
我的HP8656B信号发生器仍然很完美，它几乎和我一样古老。
U1620A是我后悔购买的第一款安捷伦产品。
除了风扇问题，它还会产生很多环境噪音。
例如，如果我将垂直刻度设置为20mV / div并使示波器靠近任何电子设备（如打印机，计算机LCD显示器），即使没有连接任何探头，它也会拾取120Hz尖峰（~50mVpp）。
我希望这并不能说明是德科技将会带来什么。
我不想这样做，但现在，我正在考虑购买Tek THS3000。



以下为原文

That's what my scope's fan sounds like.

Kevin, I spoke to you on the phone last week. Thank you for your assistance. Everyone at Agilent has been just fantastic but this product has been a disappointment.

I had always marveled at how well HP/Agilent test equipments work over the years, always performed much better than specified accuracy. For example, my Agilent spectrum analyzer's is so accurate that I could almost use it as a frequency standard. If the spec was 1ppm, it performs at 0.01ppm. My HP8656B signal generator is still perfect and it's almost as old as I am.

U1620A is the first Agilent product that I regret purchasing. Beside the fan issue, it picks up a lot of ambient noise. For example, if I set the vertical scale at 20mV/div and bring the scope close to any electronic devices such as printer, computer LCD monitor, it picks up 120Hz spikes (~50mVpp) even without any probes attached.

I hope this is not indicative of what's to come with Keysight Technologies. I did not want to do it but now, I am considering buying Tek THS3000.

删除重复的回复。编辑：Jeff002于2014年6月26日上午12:57



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删除重复的回复。编辑：Jeff002于2014年6月26日上午12:58



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删除重复的回复。编辑：Jeff002于2014年6月26日上午12:59



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Edited by: Jeff002 on Jun 26, 2014 12:59 AM

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