I was wondering if you traded resolution for frequency or some other function. I did look at some of the used name brand and did notice how quick it gets expensive.
I was wondering if you traded resolution for frequency or some other function. I did look at some of the used name brand and did notice how quick it gets expensive.To some extent this might be true, I have the MHS 5200A version which is 25Mhz and if you look on here and you tube there are plenty of reports and reviews basically slagging it off as it having poor square waves at 25Mhz they say it looked more like sine waves, also stating that it claimed to be capable of 20Vpp but couldn't deliver etc. But in reality, checking the manual reveals the following:-
Sine wave is the only one to go the 25Mhz, all others, Sq, Saw Tooth and Arbitrary waves are up to 6Mhz. output is indeed 20Vpp on all waves up to 12Mhz and after it drops down to 15Vpp.
This I suspect is really a function of the limited supply coming from the built in SMPS, maybe replacing this with a linear power supply may lift this.
One of the limitations to this unit, suffered by many others I am sure, is that it supports a 20Vpp output only to 10MHz, then 10Vpp to 20MHz and then 5Vpp thereafter. As noted before, this is likely a limitation of the output amplifier. I would suggest buyers RTFM before purchase to know exactly the limitations here.
My FY6600 BNC-ground to Earth-ground Voltage is 94 Volt.
Zing zing zing, not happy about it.
Will have a look for a cheap 30VA isolation transformer.
My FY6600 BNC-ground to Earth-ground Voltage is 94 Volt.
Zing zing zing, not happy about it.
Will have a look for a cheap 30VA isolation transformer.That's what I was afraid of. I'm kind of glad I didn't pull the trigger on this one. With all the extra fiddling and hours measuring and fixing things involved, buying a 'real' unit isn't that much more expensive.
I don't know what your hourly rate is but putting a IEC socket with earth in and connecting the earth to the 0V of the power supply takes about half an hour. I know many people like to turn this into a big project but that is not necessary at all.
I don't know what your hourly rate is but putting a IEC socket with earth in and connecting the earth to the 0V of the power supply takes about half an hour. I know many people like to turn this into a big project but that is not necessary at all.That's probably more than an evening of work. I tend to share your optimistic judgement of project times, and it somehow never seems to pan out.
I don't know what your hourly rate is but putting a IEC socket with earth in and connecting the earth to the 0V of the power supply takes about half an hour. I know many people like to turn this into a big project but that is not necessary at all.That's probably more than an evening of work. I tend to share your optimistic judgement of project times, and it somehow never seems to pan out.Well I already upgraded a FY3000S series so I know it is half an hour of work. And what is difficult about ordering an IEC inlet and a piece of wire (if you don't have these already)?
I don't know what your hourly rate is but putting a IEC socket with earth in and connecting the earth to the 0V of the power supply takes about half an hour. I know many people like to turn this into a big project but that is not necessary at all.That's probably more than an evening of work. I tend to share your optimistic judgement of project times, and it somehow never seems to pan out.Well I already upgraded a FY3000S series so I know it is half an hour of work. And what is difficult about ordering an IEC inlet and a piece of wire (if you don't have these already)?Did you use a Y cap or just a direct connection?
First of all...
Is this the "real" FeelTech?
First of all, in the absence of the introduction of the ground wire of the two-wire plug of the switching power supply system will have such a situation.
In order to suppress common mode interference, the switching power supply in the design, the "safety capacitor" will be between the "LG / NG" (safety capacitor is used for such occasions, even if the capacitor fails, will not lead to electric shock, so the secondary side of the switching power supply "ground" is equivalent to the midpoint of the AC voltage, so you measured 110V voltage. But this does not mean there will be security risks, after all, the capacitance capacity of only 1000pf.
If you are still worried about its leakage, then the correct way is to measure its DC leakage resistance, the use of insulation tester is the most effective way
That's great! Welcome to the forum.
Since you're here, if there is a way to update the firmware in the FY3224S, can you post that info in the FY3224S thread? Many have asked about it. Thanks!
Test equipment should not have this problem. The leakage current is big enoug to destroy a circuit so it is very bad!
Test equipment should not have this problem. The leakage current is big enoug to destroy a circuit so it is very bad!For me, it is the reason not to buy the unit, along with not trusting no-Chinese things on mains. If I can use my own plugpack or power supply, I'm game.
-sigh- Your own plugpack will have the same problem if it is a switching one. And it is probably made in China as well.