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

[fremen67]

one comment would be if possible make it so the user could enter thier SCPI commands into a dialog so maybe it could support more scopes and maybe a DMM.   I have a Rigol DM3068 I could test with for you.

Thank you for your comments. Generic support for new scopes includes SCPI commands modification but also horizontal and vertical scale calculation modification, statistical functions modification,...plus the SCPI commands may also include parameters which are not always at the same place in the commands. That's possible but will require some time to do it. It may be faster to include support for a selection of well distributed scopes (I will include also support for MSO/DS2000A as Flatlander adapted the tool for his MSO2302A).

Support for DMM should be easier as it is quite common that SCPI enabled DMM have support compatibility modes with older DMM (with HP 34401a for example). I was trying to buy a used HP 34401a but I find them overpriced in europe. For the same price I could buy a new Rigol 3058E or a Siglent SDM3055. As soon as I have such a DMM, I will include the DMM support in the calibration tool and will come back to you for testing.
I may pull the trigger for a SDM3055 because of the large display but I am waiting for a the upcoming  review on the signal path blog.

[fremen67]

UPDATE :
i just completed a manual calibration round for channel one (a huge PITA at best), now self test is GO !

That's a good news!

@fremen67 : 67 is your year of birth ?

Not far but no it's the code number of the area where I live in France (67 = Bas-Rhin - Alsace)

[fremen67]

Curious as if the above hack will still work with the current HDG2002B models for sale.

At least it was still the case last month ... https://www.eevblog.com/forum/testgear/hantek-hdg2002b-awg-5mhz-or-100mhz-let's-see!/msg600782/#msg600782

[smgvbest]

Hi

I got a pc setup to run the script and after making the change for 64bit it ran ok.   Calibrated both channels and it is doing better but it does still fail that stupid zoom unit test on mine.   One thing I notices that was strange it right at 98Mhz I hear it kick in a relay and I get a 482mV offset added in.   I can take it out on the scope with AC coupling but in use that changes my signal.  not sure where it came from and I don't recall it before calibrating but then again I don't know if I ever had it in the 2V range before

Script worked great though from what I can tell.   Saved allot of time and hassle   

[fremen67]

Hi

I got a pc setup to run the script and after making the change for 64bit it ran ok.   Calibrated both channels and it is doing better but it does still fail that stupid zoom unit test on mine.   One thing I notices that was strange it right at 98Mhz I hear it kick in a relay and I get a 482mV offset added in.   I can take it out on the scope with AC coupling but in use that changes my signal.  not sure where it came from and I don't recall it before calibrating but then again I don't know if I ever had it in the 2V range before

Script worked great though from what I can tell.   Saved allot of time and hassle   

Do you have the offset problem on the channel which fails the selftest only? This offset could be the reason of the selftest failure then. The relay which kicks in just activate an amplifier stage (x4 or x5). So you may have a problem with one amplifier stage...

I PMed Bugdozer who has the same hardware as yours to know wether he still has this selftest problem or not after calibration.
https://www.eevblog.com/forum/testgear/hantek-hdg2002b-awg-5mhz-or-100mhz-let's-see!/msg601354/#msg601354

I finally found a HP34401A for a reasonable price so I will update the calibration tool as soon as I receive it.

[tridentsx]

Does the board boot-up without the keypad and screen connected, or is the boot halted ?

It boots on my dev board without screen nor keypad, neither FPGA connected

Does the boot have any visual indications or audible indications except the main screen ?

I don't think so. You should see the Hantek square barcode logo as soon as the kernel starts

I also don't see any output on the serial connections.

That's the first thing you should see ... Did you check your soldering close enough? 

I had my wife check the soldering, she is younger and has better eyesight than I have and she found a tiny bridge on the EMAC. After removing that the device boots up. I still get a failure message in the boot log.

Code: [Select]

AFG3050 fpga configure init
dm9000 Ethernet Driver, V1.31
dm9000 dm9000: read wrong id 0x2b2a2928
dm9000 dm9000: read wrong id 0x2b2a2928
dm9000 dm9000: read wrong id 0x2b2a2928
dm9000 dm9000: read wrong id 0x2b2a2928
dm9000 dm9000: read wrong id 0x2b2a2928
dm9000 dm9000: read wrong id 0x2b2a2928
dm9000 dm9000: read wrong id 0x2b2a2928
dm9000 dm9000: read wrong id 0x2b2a2928
dm9000 dm9000: wrong id: 0x2b2a2928
dm9000 dm9000: not found (-19).
insmod: can't read '/dso/driver/s3c-hsudc.ko': No such file or directory
Anyone else seen this ?
Maybe I have to get a new DM9000AEP chip and redo the whole thing and while I am at it d get a microscope as well so I can see what I am doing.
Thanks for the help

[fremen67]

Maybe I have to get a new DM9000AEP chip and redo the whole thing and while I am at it d get a microscope as well so I can see what I am doing.

Yes that's quite small...

Before starting over just check you added all the needed components:
- DM9000AEP
- H1102NL magnetics
- RJHSE-5381 RJ45 jack
- 25Mhz Crystal
- 2x22pf caps

Otherwise some pictures of both sides of the board may help (near DM9000AEP and H1102NL magnetics)...

[smgvbest]

I've been out of commission for a bit. I will have to check if it's on both.   
Both channels do fails the selftest.  it was zoom unit 1 on ch1 and ch2 that fails that

Do you have the offset problem on the channel which fails the selftest only? This offset could be the reason of the selftest failure then. The relay which kicks in just activate an amplifier stage (x4 or x5). So you may have a problem with one amplifier stage...

I PMed Bugdozer who has the same hardware as yours to know wether he still has this selftest problem or not after calibration.
https://www.eevblog.com/forum/testgear/hantek-hdg2002b-awg-5mhz-or-100mhz-let's-see!/msg601354/#msg601354

I finally found a HP34401A for a reasonable price so I will update the calibration tool as soon as I receive it.

[rosasharn]

I finally found a HP34401A for a reasonable price so I will update the calibration tool as soon as I receive it.

Is the update calibration tool available now?

[fremen67]

Is the update calibration tool available now?

I should receive my DMM this week so I suppose this could be done at the end of the week ... if it works well 

[markone]

Is the update calibration tool available now?

I should receive my DMM this week so I suppose this could be done at the end of the week ... if it works well 

Hi fremen,

i tried your excel script, of course is working :-)

I only had to change my windows default decimal separator to make it to work.

But i have some weird results on channel two (not so small amplitude & offset error after cal) and i want to try a calibration with a straight coax cable.

How can i change the scope probe ratio from 10:1 to 1:1 in your code ?

Thanks,

Marco.

[fremen67]

I only had to change my windows default decimal separator to make it to work.

Yes that's often what we have to do when using Excel in our poor european countries. Welcome to the club . Excel, CSV files and default decimal separator ... a never ending story   

How can i change the scope probe ratio from 10:1 to 1:1 in your code ?

In fact I don't change it and use the DSO default configuration for that. You have 2 options:
1 - either change the probe ratio of the channel you use and save it as default on your scope
2 - or add the "PROBe" line in the InitDSO function:

Code: [Select]

Private Function InitDSO(ByVal DSOChannel As Integer) As Boolean
' Perform DSO initialization steps

.......

    ' Set Channel parameters
    DSO.WriteString (sDotCHANnelx & ":DISPlay ON")
    DSO.WriteString (sDotCHANnelx & ":COUPling DC")
    DSO.WriteString (sDotCHANnelx & ":BWLimit OFF")
    DSO.WriteString (sDotCHANnelx & ":PROBe 1")

.....

I can't test it as I am not at home but this might work ... hopefully

[markone]

-snip

In fact I don't change it and use the DSO default configuration for that. You have 2 options:
1 - either change the probe ratio of the channel you use and save it as default on your scope
2 - or add the "PROBe" line in the InitDSO function:

Code: [Select]

Private Function InitDSO(ByVal DSOChannel As Integer) As Boolean
' Perform DSO initialization steps

.......

    ' Set Channel parameters
    DSO.WriteString (sDotCHANnelx & ":DISPlay ON")
    DSO.WriteString (sDotCHANnelx & ":COUPling DC")
    DSO.WriteString (sDotCHANnelx & ":BWLimit OFF")
    DSO.WriteString (sDotCHANnelx & ":PROBe 1")

.....

I can't test it as I am not at home but this might work ... hopefully

Just added "DSO.WriteString (sDotCHANnelx & ":PROBe 1")" code line as you instructed and it works :-)

I'm not a .net programmer so i had to search the web for instructions about embedded VBA function editing.

The following link explain it quite well :  ttps://support.office.com/en-za/article/Edit-a-macro-ed9e8c3d-58fd-47a1-83eb-bdee680376bb#bm1

With the straight coax RG58 cable i have more consistent calibration results against Rigol probe reading .... but i wonder why ...

[fremen67]

Just added "DSO.WriteString (sDotCHANnelx & ":PROBe 1")" code line as you instructed and it works :-)

I'm not a .net programmer so i had to search the web for instructions about embedded VBA function editing.

Glad that it worked. Maybe a good time to start?

With the straight coax RG58 cable i have more consistent calibration results against Rigol probe reading .... but i wonder why ...

Strange ... How did you connect the probes on the HDG? In fact I don't use the RIGOL probes that came with my DSO. I stick to the Metrix HA1316 probes I had and that I like a lot: 2 settings points (1khz+1Mhz) plus convenient accessories (BNC plug adapter, ...).

At least did it solve the HDG selftest problem?

[markone]

Glad that it worked. Maybe a good time to start?

I'm a cold war boy used to code in plain C language on embedded systems, with good memories for Z80 & 80C31 & AD2101DSP assembler works till the middle of 90s :-)

But i love NI Labview on PC side ;-)   

With the straight coax RG58 cable i have more consistent calibration results against Rigol probe reading .... but i wonder why ...

Strange ... How did you connect the probes on the HDG? In fact I don't use the RIGOL probes that came with my DSO. I stick to the Metrix HA1316 probes I had and that I like a lot: 2 settings points (1khz+1Mhz) plus convenient accessories (BNC plug adapter, ...).

At least did it solve the HDG selftest problem?

HDG selftest errors disappeared already from the first manual calibration.

Calibrating with the Rigol probe leads to high DC offset and HF amplitude attenuation (the probe reads higher HF amplitude than straight cable), i will try a different scope probe later.

Anyway i just noticed a DS1074 problem :

with one channel in use fine trimming the vertical sensitivity to 335mV/div or less (channel set to 1X), signals over about  30Mhz becomes significantly distorted at least on the screen.

I saw that during script calibration and i checked it manually after, discovering also that if you enable other channels the distortion disappear 

See the attached screenshots, 2Vpp sine 90Mhz signal, 340mV/div (signal good), 335mV/div (signal distorted one channel in use), 335mV/div (signal good two channel in use), all with coax cable and 1X probe ratio.

[rosasharn]

Is the update calibration tool available now?

I should receive my DMM this week so I suppose this could be done at the end of the week ... if it works well 

Great! Hope have your news soon. 

[markone]

Just tried the instrument frequency sweep, with this function the signal it's UTTERLY UNCAL ! 

[rosasharn]

 

[markone]

Just discovered also that AM modulation is now broken (SW 1.0.0.3), see attached image.

It would be a 10Mhz 100% AM modulated signal,  (@10Khz), but as you can see, the deepness is wrong, sure not 100%.

If i remember well, with the previous SW version (1.0.0.2), the AM deepness was right.

I will try to revert to 1.0.0.2 and check.

Guys, stay away from this crap.

[markone]

System SW reverted to 1.0.0.2, now AM modulation is right, see attached image (10Mhz carrier, 100% AM modulated @ 10Khz).

[Dago]

Has anyone had any problems modding their Hantek?

I've had it for ages but haven't had the need for higher frequencies so I haven't modded it yet. Now I'd need a sine up to 100 MHz so I started modding it but I'm having trouble getting the UART to work. I found the pinout for the connector (next to the USB-connector at the backside) and that the settings for the UART is 115200baud, 8N1, no parity, no flow control. With these settings the it "appears" to work in the sense that when I boot the thing I get a couple of pages worth of something. But everything coming from the scope is just a garbled mess (nothing seems to make any sense, lots of characters are just grey boxes etc.). Pressing keys results in 1-30 characters printed in the terminal (I'm using putty btw.). I just have a short piece (~10cm) of ribbon cable connecting to my (genuine) FT232 UART adapter. Any ideas what could be wrong?

Edit: Figured it out, for some reason on the adapter I have the "Invert TXD" and "Invert RXD" options were set when looking at the adapter settings with ft_prog. Changed them and now it works (had to replug the adapter).

[fremen67]

I'm a cold war boy used to code in plain C language on embedded systems, with good memories for Z80 & 80C31 & AD2101DSP assembler works till the middle of 90s :-)

I think I still have somewhere in a box the ZX81 I bought in 81 with the impressive 16ko external RAM module 

Anyway i just noticed a DS1074 problem :

with one channel in use fine trimming the vertical sensitivity to 335mV/div or less (channel set to 1X), signals over about  30Mhz becomes significantly distorted at least on the screen.

I saw that during script calibration and i checked it manually after, discovering also that if you enable other channels the distortion disappear 

See the attached screenshots, 2Vpp sine 90Mhz signal, 340mV/div (signal good), 335mV/div (signal distorted one channel in use), 335mV/div (signal good two channel in use), all with coax cable and 1X probe ratio.

Yes, I can reproduce it too on my DS1054Z. You can hear a relay clicking when the signal gets distorded... strange indeed

Just discovered also that AM modulation is now broken (SW 1.0.0.3), see attached image.

It would be a 10Mhz 100% AM modulated signal,  (@10Khz), but as you can see, the deepness is wrong, sure not 100%.

Yes I can reproduce it too. But it seems to be OK for signals that don't use the x4 or x5 amplification stages, that is under 1 Vpp. As the way the x4 and x5 amplifiers are used has been modified in the 1.00.3, I would guess that they did not retest al the functions. Or may be the 1.00.3 is supposed to be used with FPGA 30 only...
It is becoming really annoying, and still no official updates on Hantek website.

[fremen67]

I've had it for ages but haven't had the need for higher frequencies so I haven't modded it yet. Now I'd need a sine up to 100 MHz so I started modding it

Nice that it works now. Remenber that after the mod you will have to calibrate the HDG to get it working above 30Mhz...

[fremen67]

So I finally received my 34401A 
Here is the modified version of the HDG calibration tool with:
- Excel x64 support (thank you smgvbest for the feedback)
- 34401A DMM support for DC values
- Rigol DS/MSO2000A support thanks to flatlander
- Excel sheet update improvement

If you don't want to use a device (DMM or DSO), just leave the adresss/alias empty.
The DSO detection type is done using the IDN string so it should be able to detect a DS/MSO1000Z and DS/MSO2000A (hopefully ).
Depending on the calibration value type, you should be prompted to connect the correct device to the HDG.

I also wanted to add a progress status bar but it's bed time here ...
Hope this will help!

[rosasharn]

Thanks fremen67!
I'll download and try on my HDG.