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Hantek HDG2002B AWG: 5Mhz or 100MHz? Let's see!
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fremen67:

--- Quote from: smgvbest on January 19, 2015, 02:26:36 pm ---@fremen67
So with the 1.03 software you are seeing failures now in the self test also?
if so that could be they broke the self test and did not fully regression test the unit out.  from what I've been reading that would not surprise me of Hantek.   

--- End quote ---
Yes I did but they just disappeared after the calibration process. Did you tried it on your HDG?


--- Quote from: smgvbest on January 19, 2015, 02:26:36 pm ---I've not run into any real issues with it other than lack of a decent manual in english

--- End quote ---
At least that's a good thing you did not notice any special issue  :)
Did you download this manual? https://www.eevblog.com/forum/testgear/hantek-hdg2002b-awg-5mhz-or-100mhz-let's-see!/msg454279/#msg454279
fremen67:

--- Quote from: fremen67 on January 19, 2015, 11:18:28 pm ---
--- Quote from: smgvbest on January 19, 2015, 02:26:36 pm ---@fremen67
So with the 1.03 software you are seeing failures now in the self test also?
if so that could be they broke the self test and did not fully regression test the unit out.  from what I've been reading that would not surprise me of Hantek.   

--- End quote ---
Yes I did but they just disappeared after the calibration process. Did you tried it on your HDG?

--- End quote ---
I just powered on my HDG today and run a selftest: lasts 6 steps are failing again  :-//
smgvbest:
The seller say sure they will be happy to exchange or refund my HDG2002B but I have to pay return shipping to china.
Since your seeing failures now with the 1.03 version you loaded I'm wondering if I do have a problem or it's a bug in the self test.

I was trying to start a cal but when I follow the instructions on the manual they do not match well at all
I checked if anyone had posted a better description of the calibration procedure but do not see one.

Would anyone be willing to post the process and maybe some reference as to what to expect.
As I do understand the first 9 tests are DC values and I can use my meter to read those out.   I did start that and set the meter to run an average and I let it run until it gave a steady value (about 500 samples, I am using a DM3058E) and it seemed I had to input the value, press value then next to go to the next one which didn't agree with the manual.

I do have a backup thanks to fremen67 script for the current calibration.

At this point I am not so sure that the self test is not just broken in this version

@fremen67 what would be your thought on downgrading to the 1.02 version and testing under it?
next would be do you have a copy of it and how to install it?  Only if you think its worth a try though
fremen67:

--- Quote from: smgvbest on January 21, 2015, 09:50:13 am ---I was trying to start a cal but when I follow the instructions on the manual they do not match well at all
I checked if anyone had posted a better description of the calibration procedure but do not see one.

Would anyone be willing to post the process and maybe some reference as to what to expect.
As I do understand the first 9 tests are DC values and I can use my meter to read those out. I did start that and set the meter to run an average and I let it run until it gave a steady value (about 500 samples, I am using a DM3058E) and it seemed I had to input the value, press value then next to go to the next one which didn't agree with the manual.

--- End quote ---
Yes that's almost it. When you are in the calibration menu:
1 - Select CH1 or CH2 with F1
2 - Press F2 to start
3 - Press F2 again (Next) to start with the 1 st value
4 - Measure the value, enter it and push F3 (Value) to validate the value
5 - repeat step 3&4 till the last value (90 values  :phew:)
6 - Press F4 save and you are done

With SW 1.00.3 the calibration output values seems to have changed. It seems that the HDG outputs now only the maximum values for each range.

The 12 first values are DC values so you just need to use your DMM (I used my Metrix MX54C and waited  some seconds for each value so that it stopped changing. Your DM3058E seems more than enough accurate  for that  ;) )
The DC values seem to be now:
- 2 times the min&max Voltage with x1 gain
- 2 times the min&max Voltage with x4 gain  (only the x4 amplification stage)
- 2 times the min&max Voltage with x20 gain (the 2 amplification stages in serial,  x4 & x5)
For example I had 0,5781 -0,5805 0,5782 -0,5806 2,2476 -2,2664 2,2478 -2,2671 11,145 -11,259 11,145 -11,262 V

For the last 78 values you will need a scope as the signal is a sine wave at different frequencies with the maximum output for the 3 ranges (I connected directly the probe with an adapter on the HDG output).
The 26 frequencies are 0,5 1 2 5 6 10 12 18 21 25 26 30 35 40 46 50 51 55 56 60 62 68 72 78 85 90 Mhz
You have to enter the Vpp value for each frequency (so in my case 27x values starting at 1.16V, 27x values starting at 4.5V and 27 values starting at 22.5V). I used for that the average acquisition mode of the scope, waiting some seconds between each value so that it stopped changing).


--- Quote from: smgvbest on January 21, 2015, 09:50:13 am ---@fremen67 what would be your thought on downgrading to the 1.02 version and testing under it?
next would be do you have a copy of it and how to install it?  Only if you think its worth a try though

--- End quote ---

If you still have self test issues after the calibration process, it could be worth trying with sw 1.00.2.
You will just need to keep your FPGA 30 configuration file because of your PCB 1004.1.

If you want to do it, just tell me and I will send you a custom 1.00.2 file plus another one to go back to 1.00.3 after the test.
There are several ways of doing the downgrade, depending on the tools you have. The easiest way for you would be that I provide you with an .upk "upgrade" file that your HDG could directly use (2 in fact, one to downgrade to 1.00.2 + one to upgrade back to 1.00.3).
The second way would be to do it from u-boot (via the serial console and a PC connected on the USB port of the HDG).
You can also do it via JTAG with OpenOCD (very slow) or H-Jtag (much better but you need Windows XP or Win7 32bits when using a Wiggler JTAG device).

Anyway I will try to package an upgrade file so that others having 1.00.2  can also upgrade to 1.00.3.

I wonder when Hantek will start posting official upgrade files on their site ...
smgvbest:
Thank you very much for clarifying the process
It's probably not good to do while tired so I'll work on it tomorrow and let you know the results
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