EEVblog HVP70 Differential Probe

[EEVblog]

Is it available yet?
How much does it cost?

A few weeks.
How much would you pay?

It would be for occasional hobby use, on that basis I wouldn't want to spend more than about £50.

You'll have to make your own for that.

[technogeeky]

Is it available yet?
How much does it cost?

A few weeks.
How much would you pay?

It would be for occasional hobby use, on that basis I wouldn't want to spend more than about £50.

You'll have to make your own for that.

Dave:

I'm sure this will be a fine product. Do you know why these don't generally come with (shrouded, or not) banana jacks? Wouldn't it be nice to allow people to use whatever leads they prefer to use?

Is it not possible (or practical) to calibrate against varying leads? Could you just assume they are identical?

[EEVblog]

I'm sure this will be a fine product. Do you know why these don't generally come with (shrouded, or not) banana jacks? Wouldn't it be nice to allow people to use whatever leads they prefer to use?

It does come with shrouded banana jacks (plugs actually), just on the end of the leads. Make or buy your own adapters.

Is it not possible (or practical) to calibrate against varying leads? Could you just assume they are identical?

That's a unique system measurement issue.

[Dubbie]

I would pay up to $300usd

[Fsck]

Hmmm, looks like similar specs to Sapphire. 

that was my first impression too.

for the hobbyist market, 300$ is really a good spot. Lower is obviously better though. 250$ would really sweep the (really tiny) market of the others.

[amspire]

that was my first impression too.

for the hobbyist market, 300$ is really a good spot. Lower is obviously better though. 250$ would really sweep the (really tiny) market of the others.

You are right. When someone can come up with a decent $50 differential probe, the hobbyist will really star buying. $300 is the price of an 100MHz 1GS/sec digital oscilloscope  - I cannot see the majority being interested in a probe for the same price.

For professionals, I think they would easily pay $600 if it had a great CMRR, was very safe and unbreakable.

[EEVblog]

For professionals, I think they would easily pay $600 if it had a great CMRR, was very safe and unbreakable.

Pretty standard for these types of probes:

CMRR (typical)
-80dB @50Hz,
-60dB @20kHz
-50 dB @ 1MHz
-40 dB @ 10MHz

[amspire]

For professionals, I think they would easily pay $600 if it had a great CMRR, was very safe and unbreakable.

Pretty standard for these types of probes:

CMRR (typical)
-80dB @50Hz,
-60dB @20kHz
-50 dB @ 1MHz
-40 dB @ 10MHz

Not bad. Definitely competitive. The rating is for 700V differential and common mode, but it is tested at 1000V RMS for safety.

Even if it does not function at 1000V RMS, does the probe survive?

[neslekkim]

So with these, I can probe around everywhere without worrying about blowing my scope? (looking at vide #932)

would be nice if these would be not too expensive for hobbyists..  $200?, $250?

[amspire]

Yes. That is what they are for. Great for viewing a 5v signal in a switching inverter running on rectified mains. Might have 400V peak to peak common mode signals. Safe for the scope and the operator.

[gamalot]

Looks like Sapphire SI9010 (about 5200CNY on Taobao, 1485AUD on Trio, tax excl.)

[cheeseit]

Very interesting Dave. I'm hoping that you release a video explaining the various use cases for this probe and how to use it properly, and the likely gotchas involved. I know the basics but think that a relative high price for a hobbyist might be offset by some explanation and examples of why it's such a useful tool, and knowing how to use it without damaging either tool, scope, DUT or operator.

[HighVoltage]

Looks great from the picture.

If you can sell them for $ 200, you will probably sell a lot of them.

[TheAmmoniacal]

People act like Dave can put any price he wants on it.. He has to buy them from the manufacturer and have them sent to his office, then he needs a profit to make the sale worth it. He is already pushing it with the amount of profit which is worthwhile, I am sure..

[fcb]

Looking forward to the tear-down and explanation of why this isn't just a rebadged product?

[TheAmmoniacal]

Looking forward to the tear-down and explanation of why this isn't just a rebadged product?

I would be surprised if it wasn't a rebadge, what's wrong with that?

[EEVblog]

So with these, I can probe around everywhere without worrying about blowing my scope? (looking at vide #932)

Yes, that's exactly what they are for.

would be nice if these would be not too expensive for hobbyists..  $200?, $250?

You'll have to buy a cheapie on ebay to get that price.

[EEVblog]

Looking forward to the tear-down and explanation of why this isn't just a rebadged product?

It is just a rebadged product, but it's a new model no one else has yet AFAIK. Same as the BM235.

[EEVblog]

If you can sell them for $ 200, you will probably sell a lot of them.

I don't think people realise how much these probes currently sell for. You can't even buy a cheapie ebay or Aliexpress 25MHz job for $200, let alone a quality 70MHz one.

[nctnico]

If you can sell them for $ 200, you will probably sell a lot of them.

I don't think people realise how much these probes currently sell for. You can't even buy a cheapie ebay or Aliexpress 25MHz job for $200, let alone a quality 70MHz one.

Still I'd like to see them cheaper so there is no excuse for people to do measurements in a crazy unsafe way.

[Helix70]

Looks like Sapphire SI9010 (about 5200CNY on Taobao, 1485AUD on Trio, tax excl.)

Actually, more like a 70 Mhz version of the SI-9101, which is a 100Mhz -3db, 1/10 and 1/100 differential probe with +/-70V on 1:10, and are 975AUD on Trio, tax excl.

That one you quoted is 1:100 and 1:1000, and withstands higher voltages

[EEVblog]

Still I'd like to see them cheaper so there is no excuse for people to do measurements in a crazy unsafe way.

Of course. Sorry I can't make that magically happen.

[EEVblog]

I like the Pintek ones better.

They are clones of Sapphire:
http://www.sapphire.com.tw/notify.pdf

[Avacee]

Slightly off-topic - apologies if I should have started a new thread.

Do probe and oscilloscope db's add up?
I.e. a 70Mhz signal through this probe into a 70Mhz oscilloscope - would the displayed signal be 6db down?

[Pinkus]

looks like it is an OEM producing also for Keysight (see N2791A) or LeCroy (see picture attached check the same packaging, housing/rubber and layout of switches) (thoug both are 25 Mhz versions).

Teardown: http://bardagjy.com/?p=1664