Hantek HDG2002B AWG: 5Mhz or 100MHz? Let's see!

[rodlaird]

Sounds like it's a doddle! Thanks mate!

...in fact it seems a bit of a "fail safe" as you could modify things without the reboot and if you screw it up it just clears... (Wish life was like that...  )

[idpromnut]

A couple of questions:

- It looks like to the left of the serial header there is a spot for a DB9 + a MAX323-style chip?
- I see the SOIC-8 footprint on the bottom under the HF counter, any ideas what chip part # could go there? I had a look around and came up with this: http://www.micrel.com/index.php/en/products/clock-timing/clock-data-distribution/clock-dividers/article/21-sy10100el32v.html.  Just not sure what type of divider would be needed; this is of course only a /2 divider.

[fremen67]

- It looks like to the left of the serial header there is a spot for a DB9 + a MAX323-style chip?

The 2 spots on the left of the UART header are for the lan option (RJ45 jack + H1102NL Magnetic). See attached picture with populated spots.

- I see the SOIC-8 footprint on the bottom under the HF counter, any ideas what chip part # could go there? I had a look around and came up with this: http://www.micrel.com/index.php/en/products/clock-timing/clock-data-distribution/clock-dividers/article/21-sy10100el32v.html.  Just not sure what type of divider would be needed; this is of course only a /2 divider.

I also though about a frequency divider. It could be a 1/128 divider as the high frequency input could go up to 2.7Ghz and the low frequency input is still working at 25Mhz. Tinhead suggested a LMX5080 or a MB510 but the pinout to this footprint is strange: 1&8 are connected together (2.5v), 2, 3, 6&7 are grounded and 4&5 are not connected ...

[Dago]

want to spend for 80-100mhz signal generator. How much did you spend for it and where did you buy this merveilleux tool?

You can get it off eBay for around 250€ shipped.

[Control:Eng]

Interessting news!

Quite a bargain when considering the hackability.

I wonder how the Waveforms look like. Do you maybe have a DSO and want to post some measurements here in the forum?

Right now, I'm also considering to buy one of there FG's. Spec's are really awesome.

[idpromnut]

Mine should be here in 2-3 weeks; if no one has posted detailed waveform + accuracy measurements by then, I will do so (before I "adjust it" and after).

[fremen67]

- I see the SOIC-8 footprint on the bottom under the HF counter, any ideas what chip part # could go there? I had a look around and came up with this: http://www.micrel.com/index.php/en/products/clock-timing/clock-data-distribution/clock-dividers/article/21-sy10100el32v.html.  Just not sure what type of divider would be needed; this is of course only a /2 divider.

I also though about a frequency divider. It could be a 1/128 divider as the high frequency input could go up to 2.7Ghz and the low frequency input is still working at 25Mhz. Tinhead suggested a LMX5080 or a MB510 but the pinout to this footprint is strange: 1&8 are connected together (2.5v), 2, 3, 6&7 are grounded and 4&5 are not connected ...

I tried to connect one  channel  set to the max frequency (100Mhz Sine) to the HF counter directly on the PCB and guess what... it worked! It seems that everything, except the jack, is already on board for the HF counter to work 

[idpromnut]

- I see the SOIC-8 footprint on the bottom under the HF counter, any ideas what chip part # could go there? I had a look around and came up with this: http://www.micrel.com/index.php/en/products/clock-timing/clock-data-distribution/clock-dividers/article/21-sy10100el32v.html.  Just not sure what type of divider would be needed; this is of course only a /2 divider.

I also though about a frequency divider. It could be a 1/128 divider as the high frequency input could go up to 2.7Ghz and the low frequency input is still working at 25Mhz. Tinhead suggested a LMX5080 or a MB510 but the pinout to this footprint is strange: 1&8 are connected together (2.5v), 2, 3, 6&7 are grounded and 4&5 are not connected ...

I tried to connect one  channel  set to the max frequency (100Mhz Sine) to the HF counter directly on the PCB and guess what... it worked! It seems that everything, except the jack, is already on board for the HF counter to work 

Neat.  I will further test that when I get my hardware. I have a 2.1GHz signal generator that should give it a bit of a workout

[idpromnut]

Well, I got my unit today, and I must say I am rather impressed in general by it!  The shipping was reasonable from the seller I bought from on EBay, and it tool only 4 days (shipped last Thursday, got it today) via DHL.

I still need to take it apart and see what's inside!

[nctnico]

Anyone played with the digital outputs yet? Does the PC software have a special 'digital pattern' mode? It would be nice if it could produce I2C and SPI patterns with a tool.

[rodlaird]

mmm... mine just arrived; seems pretty sweet - but some English docs would be good. Streets ahead of my previous PC based AWG. Waiting on a TTL USB UART to arrive to try unlocking a bit more bandwidth...

Looking forward to hearing more from those further up the learning curve.

cheers from Oz....

[idpromnut]

I think I will get one of these for the high frequency counter BNC: http://www.digikey.ca/scripts/DkSearch/dksus.dll?Detail&itemSeq=149890915&uq=635355766482764648

Also, any ideas what chip needs to be populated to get the LAN working? I would assume the jack should have the magnetics in it already (I have on that I will try tonight) but I guess the PHY is missing or something similar.  I haven't found anything in a SOIC-16 package as of yet however.

[idpromnut]

Ah ha!  If the board is just missing the magnetics, then I think I have found the part!  http://www.digikey.com/product-detail/en/S553-5999-86-F/507-1468-1-ND/2108052


SMD Ethernet transformer, 16pin SOIC     I will check this out tonight and pull the trigger on the part if it looks good.

[idpromnut]

And another thing… this looks like it will fit the ethernet jack footprint:  http://www.digikey.ca/scripts/DkSearch/dksus.dll?Detail&itemSeq=149894408&uq=635355783712798936

I will measure and verify this tonight.

[trevwhite]

Hi. Does anyone know what the output protection is like on this piece of equipment?

[fremen67]

Also, any ideas what chip needs to be populated to get the LAN working? I would assume the jack should have the magnetics in it already (I have on that I will try tonight) but I guess the PHY is missing or something similar.  I haven't found anything in a SOIC-16 package as of yet however.

Look on the first page
https://www.eevblog.com/forum/testgear/hantek-hdg2002b-awg-5mhz-or-100mhz-let's-see!/msg438153/#msg438153

[idpromnut]

Also, any ideas what chip needs to be populated to get the LAN working? I would assume the jack should have the magnetics in it already (I have on that I will try tonight) but I guess the PHY is missing or something similar.  I haven't found anything in a SOIC-16 package as of yet however.

Look on the first page
https://www.eevblog.com/forum/testgear/hantek-hdg2002b-awg-5mhz-or-100mhz-let's-see!/msg438153/#msg438153

  DOH.  Oh well.   I went ahead and ordered the parts that you spec'd instead.

[fremen67]

I think I will get one of these for the high frequency counter BNC: http://www.digikey.ca/scripts/DkSearch/dksus.dll?Detail&itemSeq=149890915&uq=635355766482764648

The link doesn't seem to work. What is the brand and reference you found?

[idpromnut]

Yeah, sorry, Digikey is a pain when it comes to linking from an order.  The digikey part # is A32271-ND for the connector. The only issue is that the bayonet posts are on the wrong axis (vertical instead of horizontal). That will just require a bit of modification of the front panel.

[trevwhite]

Really looking forward to hearing what people think of this unit..

[simonmc]

Really looking forward to hearing what people think of this unit..

I second that. Im already quite impressed with my hantek 'scope. Already starting to save for one of these..

[idpromnut]

Has anyone experienced signal attenuation when feeding a signal into a 50R termination on a 'scope?  I was measuring the Vpp from my Hantek and noticed that on my Rigol 2072A, with the 50R termination turned on, I am getting about 1/2 of what I should get. Makes me think that the Hantek isn't sourcing correctly for a 50Ohm terminated load, but rather a high impedance load (the Vpp reasonably matches when I switch the 'scope back to 1M termination).

Is there an option that I am missing to select the output impedance on the Hantek?

[grumpydoc]

with the 50R termination turned on, I am getting about 1/2 of what I should get. Makes me think that the Hantek isn't sourcing correctly for a 50Ohm terminated load, but rather a high impedance load (the Vpp reasonably matches when I switch the 'scope back to 1M termination).

Is there an option that I am missing to select the output impedance on the Hantek?

If you get 1/2 of the indicated voltage when driving a 50 ohm load compared with driving a high impedance load then your generator output impedance is 50ohm

There should be an option to set the load impedance - but all it does is reduce the displayed voltage by a factor of 2.

[idpromnut]

Hmm, I can't find any option like this, but I need to look further.  I will say one massive issue with this generator is the manual is less than stellar. It is enough to get by, but no more (at least the English translation of the Chinese version is).

I guess a 50R output makes sense for a function generator anyways. I think my HP 8116 is the same (and has no provision for setting the output impedance ).

[leppie]

with the 50R termination turned on, I am getting about 1/2 of what I should get. Makes me think that the Hantek isn't sourcing correctly for a 50Ohm terminated load, but rather a high impedance load (the Vpp reasonably matches when I switch the 'scope back to 1M termination).

Is there an option that I am missing to select the output impedance on the Hantek?

If you get 1/2 of the indicated voltage when driving a 50 ohm load compared with driving a high impedance load then your generator output impedance is 50ohm

There should be an option to set the load impedance - but all it does is reduce the displayed voltage by a factor of 2.

Probably a software bug, and easily fixable too (to even just add such an option)