Sony_Fan Posted December 21, 2005 Report Share Posted December 21, 2005 When I bought my MZRH10, it came with these 2 clips or clamps that go around the USB cable wire. What are they for? Do I need to put them on? I also noticed that my charger cable also has a clamp on it. I've never seen this before. Thanks. Quote Link to comment Share on other sites More sharing options...
veezhun Posted December 21, 2005 Report Share Posted December 21, 2005 for reducing interference.. thats the reason Quote Link to comment Share on other sites More sharing options...
bland10000 Posted December 21, 2005 Report Share Posted December 21, 2005 A quote from Richyu from a post at another forum:"They are supposed to reduce inteference from the AC power / remote when recording. The smaller ones are to be attached one on the end of the remote cable, and the other possibly if you are using a mic I think. The big one may be for the USB cable if it doesn't already have one attached." Quote Link to comment Share on other sites More sharing options...
akijikan Posted December 21, 2005 Report Share Posted December 21, 2005 I don't use these and the manual states that they are only necessasry when hooking the recorder up to the computer, so I don't bother. You shouldn't have any problems if you don't use them, they're only there to conform some type of FCC standards. Who wants to use a remote with one of those things on it anyway? Quote Link to comment Share on other sites More sharing options...
leaf Posted December 21, 2005 Report Share Posted December 21, 2005 are you talking about one of these? Quote Link to comment Share on other sites More sharing options...
Pug Posted December 21, 2005 Report Share Posted December 21, 2005 I put those straight in the bin. Have yet to experience any problems.CheersPug Quote Link to comment Share on other sites More sharing options...
bobt Posted December 21, 2005 Report Share Posted December 21, 2005 I wouldn't worry about them, the frequencies we deal with don't necessitate these clamps.Enjoy your new toy.Merry Christmas,Bob Quote Link to comment Share on other sites More sharing options...
Sony_Fan Posted December 22, 2005 Author Report Share Posted December 22, 2005 are you talking about one of these?Yeah, that's it. I haven't used them at all. What kind of interference are they suppose to reduce or block? I only do optical/digital recording, so I don't think I need to use them. But I will be buying a new computer soon, and then I'll be downloading music with the USB cable. Do I need to use it then? Quote Link to comment Share on other sites More sharing options...
akijikan Posted December 22, 2005 Report Share Posted December 22, 2005 Reduces (eliminates?) magnetic field I think. Quote Link to comment Share on other sites More sharing options...
bobt Posted December 22, 2005 Report Share Posted December 22, 2005 You won't notice anything without them, just adds bulk to the cable, Quote Link to comment Share on other sites More sharing options...
leaf Posted December 22, 2005 Report Share Posted December 22, 2005 You won't notice anything without them, just adds bulk to the cable,I dont know, I keep them on (and away from my tape storage!) Quote Link to comment Share on other sites More sharing options...
e1ghtyf1ve Posted December 22, 2005 Report Share Posted December 22, 2005 This has been asked many times before - use the search.Repeat after me:They are not magnets.They have nothing to do with magnetism.They are RF chokes.They block radio frequency signals from entering and scrambling your (MD) brain! Quote Link to comment Share on other sites More sharing options...
akijikan Posted December 22, 2005 Report Share Posted December 22, 2005 Sorry, e1ghtyf1ve, but I believe you are wrong on a few accounts.1) They are magnetic. In fact they are ferrite which is a ferromagnetic ceramic compound of iron, born and barium or strontium or molybdenum. Same materials most house hold magnets are made of.2) They don't protect the MD unit from anything. They are there to stop the cable from emitting an illegal electromagnetic field that occurs when signals go across the cable. The FCC requires the use of the clips (or I should say requires the fields be suppressed), though most likely we can get away without using them. If you play modern videogames, you'll notice the controllers' cables have these next to where they plug in to the game system. Same thing. Quote Link to comment Share on other sites More sharing options...
e1ghtyf1ve Posted December 22, 2005 Report Share Posted December 22, 2005 Sorry, e1ghtyf1ve, but I believe you are wrong on a few accounts.1) They are magnetic. In fact they are ferrite which is a ferromagnetic ceramic compound of iron, born and barium or strontium or molybdenum. Same materials most house hold magnets are made of.2) They don't protect the MD unit from anything. They are there to stop the cable from emitting an illegal electromagnetic field that occurs when signals go across the cable. The FCC requires the use of the clips (or I should say requires the fields be suppressed), though most likely we can get away without using them. If you play modern videogames, you'll notice the controllers' cables have these next to where they plug in to the game system. Same thing.That's pretty funny! Lots of science fiction. There's some truth mixed in there, though. But no, sorry to disappoint you, the ferrite cores are not magnetic. If they produce a tiny magnetic field, it is merely coincidental and not intentional. When you wrap a loop of the cable through the cores, you are in effect creating what's called a low-inductance RF choke, a kind of low-pass filter for RF frequencies. BTW, the brain scrambling bit was a little joke. FCC doesn't require it, check the manual again (Page 3 for some). The device already complies with Part 15 as Class B, with or without the clamp filters. They do help prevent Class B digital devices from interfering with each other. You are not breaking any law by leaving them off! It is conceivable that malfunctions could rarely occur, however.Here endeth the physics lesson. Normally I would let these things slide, but there was just too much misinformation here. Quote Link to comment Share on other sites More sharing options...
AMPlitude Posted December 23, 2005 Report Share Posted December 23, 2005 bottom line, they really arent necessary Quote Link to comment Share on other sites More sharing options...
akijikan Posted December 23, 2005 Report Share Posted December 23, 2005 ay...though my understanding is wrong... Quote Link to comment Share on other sites More sharing options...
rei-gouki Posted January 6, 2006 Report Share Posted January 6, 2006 FCC doesn't require it, check the manual again (Page 3 for some). The device already complies with Part 15 as Class B, with or without the clamp filters. They do help prevent Class B digital devices from interfering with each other. You are not breaking any law by leaving them off! It is conceivable that malfunctions could rarely occur, however.... so... it's there so that if the NSA (or other security agency) bug your apartment, the cable will be prevented from interfering with the operation of the bug?If I recall, the provided clamps are for line in cables. I found out when I went to attach them to my old N707 cable and realised I was one short. Then reading the little sheet it came with (one of the many other documents in the bag with the manual), enlightened me on what they were for. Quote Link to comment Share on other sites More sharing options...
gazza49 Posted January 6, 2006 Report Share Posted January 6, 2006 they stop the music falling out of the cable and spilling in the floor. Quote Link to comment Share on other sites More sharing options...
e1ghtyf1ve Posted January 6, 2006 Report Share Posted January 6, 2006 ... so... it's there so that if the NSA (or other security agency) bug your apartment, the cable will be prevented from interfering with the operation of the bug?If I recall, the provided clamps are for line in cables. I found out when I went to attach them to my old N707 cable and realised I was one short. Then reading the little sheet it came with (one of the many other documents in the bag with the manual), enlightened me on what they were for.Here at the DHS we only use analog equipment, as they are more durable. For more information, please click on the following link:DHS Research & Technology Cheers Quote Link to comment Share on other sites More sharing options...
KrazyIvan Posted January 6, 2006 Report Share Posted January 6, 2006 they stop the music falling out of the cable and spilling in the floor.That's what I always thought they were for. Maybe the person that had noises while recording with an RH10 and the AC adapter could benifit from using these RF clamps? I can't remember who it was but I know their was a thread on here not to long ago. Quote Link to comment Share on other sites More sharing options...
The Low Volta Posted January 6, 2006 Report Share Posted January 6, 2006 (edited) I had the buzz when recording with the ac-adapter attached, but this is a grounding problem and can't be helped by the silly clamps Edited January 6, 2006 by The Low Volta Quote Link to comment Share on other sites More sharing options...
bobt Posted January 6, 2006 Report Share Posted January 6, 2006 actually what they are for is making the cable an inch too short, and making you really mad that equipement won't reachBob Quote Link to comment Share on other sites More sharing options...
The Low Volta Posted January 6, 2006 Report Share Posted January 6, 2006 and they are also there so that the coiled cable won't fit the pouch anymore Quote Link to comment Share on other sites More sharing options...
bogon07 Posted January 7, 2006 Report Share Posted January 7, 2006 They add a little more weight to be Minidisc package to make it feel more substantial so you feel you are getting more for your money. This allows Sony to get back at any of us ordering from overseas by increasing the delivery costs slightly.Also they generate a subliminal hum that induces you to buy more Sony products. Quote Link to comment Share on other sites More sharing options...
tekdroid Posted January 7, 2006 Report Share Posted January 7, 2006 if they are indeed unnecessary, I think Sony (legally) has to have them in there to get some certification (even tho it was mentioned they don't) 'cause otherwise wouldn't these be the first things to go to reduce costs?The mystery continues. Quote Link to comment Share on other sites More sharing options...
e1ghtyf1ve Posted January 8, 2006 Report Share Posted January 8, 2006 if they are indeed unnecessary, I think Sony (legally) has to have them in there to get some certification (even tho it was mentioned they don't) 'cause otherwise wouldn't these be the first things to go to reduce costs?The mystery continues.There is no mystery! This is not rocket science! Example: The USB cords I use have filters built into them (the iRiver ones work great for me, no failed uploads). Try cords without filters and you will likely find that the connection will not reliable enough for 100% consistent HiMD uploads. That has been my experience, at least. For the final time filtering may be required for reliable operation of Class B devices. RF interference can and does cause malfunctions. The filters are provided to help prevent interference. What's more, the FCC requires that the means are provided to the consumer to reduce or eliminate interference so that proper operation of Class B digital devices (including computers) can be achieved. Just Read The Fine Manual, and go to the FCC website or Google for more information on RFI filtering if you're interested.Moderators, can we add this RFI Clamp Filter FAQ to the list?Cheers Quote Link to comment Share on other sites More sharing options...
tekdroid Posted January 9, 2006 Report Share Posted January 9, 2006 What's more, the FCC requires that the means are provided to the consumer to reduce or eliminate interference so that proper operation of Class B digital devices (including computers) can be achieved. Just Read The Fine Manual, and go to the FCC website or Google for more information on RFI filtering if you're interested.Moderators, can we add this RFI Clamp Filter FAQ to the list?CheersSlight miscommunication, sorry. By 'unnecessary' I meant unnecessary to most people here. Not that is has no technical merit in and of itself, but that it probably isn't seen in daily use too much.USB cables that come bundled with Hi-MD = filter(s) included on the cables already, so I'm not talking about those.Additional (loose) filters in the box = as I suspected, perhaps required by Sony to be bundled in there (otherwise, why go to the expense for something most people don't find a need for and are confused about?). Because most people seem to do just fine with out 'em.Which is what I meant by the "if they are indeed unnecessary..." to most people. I was talking specifically about the additional ones in the box perhaps being a requirement rather than Sony feeling generous and including them when they could get away with not I will check the FCC website out, thanks. Quote Link to comment Share on other sites More sharing options...
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