Products > Test Equipment
Siglent ISFE, scope front end isolator, any opinions?
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Lightages:
I was browsing things on AliExpress and came across this:
http://www.aliexpress.com/item/Isolation-channel-accessories-ISFE-VD-ISFE-Suitable-for-SIGLENT-s-full-range-of-digital-oscilloscope/32239589606.html

It looks like a reasonable solution for isolating scopes for measuring anything in circuit and mains referenced equipment. I was really surprised that rfloop nor Tautech had not mentioned anything about this thing with all the discussions about isolation and differential probes. Maybe I missed it.

It seems to be just what many people have been looking for. Any opinions? An experiences? What say rfloop and Tautech?
joeqsmith:
I can see people hooking up their standard probes to the input and then touching the two probe cases.  The probes people use may not withstand the 2KV common mode voltage.   That or they themselves are grounded and touch the input probes.   Notice it only comes with one plastic shelled input cable (not that it looks all that safe).     

Seeing they suggest that it is used to measure line voltage, a surge event happens and next thing you know,  BLAM!!!   DSO dead....

Maybe you could explain how you would see it being used in a "safe" way.   Maybe Fluke will make something that would have some safety approvals.     
 
Lightages:
Yes, of course, if it isn't properly designed and built to prevent surges from getting in it is just as unsafe as any incorrectly rated multimeter. Perhaps it is not safe for mains use. The main benefit of this for many people would be for measuring in circuit signals inside equipment without shorting the circuitry to ground through the scope grounds.

I am thinking of getting one for a review.
dadler:
Interesting. The bandwidth is really low but could still be a useful tool for certain applications.

I'd love to see a teardown.

http://www.siglent.com/ENs/prodcut-fjxx.aspx?fjid=404&id=25&tid=1&T=2

http://www.tequipment.net/Siglent/ISFE/Oscilloscope-Probe-Accessories/
pascal_sweden:
You better go for a Pintek DP-30HS, when your main application is to make accurate floating measurements within a limited voltage range.

http://www.pintek.com.tw/product_detail/landersound/index.php?Product_SN=97781&Company_SN=6002&Product_Site_Classify_SN=17072

The Pintek DP-30HS provides a high sensitivity, has a bandwidth up to 30 MHz, and the voltage range goes up to 65V.

You can buy directly from Pintek. I could not find a distributor, and they allowed me to buy directly from them. Bought two DP-30HS differential probes from them for about 300 USD in total.
The build quality is excellent, and it comes in a really nice casing! Professional stuff, you can tell directly looking at how the product is packaged and built.
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