| Products > Test Equipment |
| Hantek HDG2002B AWG: 5Mhz or 100MHz? Let's see! |
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| fremen67:
--- Quote from: tinhead on May 18, 2014, 06:31:16 pm ---btw, the SCPI implementation is using Agilent VID/PID, so one can use Agilent I/O Suite drivers instead of Hantek driver. Sure, the Hantek app will then not work anymore (oh well, it is not working for me), but instead of that one can use any VISA/SCPI application. Interessting is the name displayed, htg1102a (instead of HTG2xxxx what so ever). Attached picture is made of HTG2xxx dump running on S3C2416 dev board (i wish i could play with real HTG, but for now it is enought to do things on dev board). --- End quote --- Yes it is working very well. I just had a driver problem (it's late here :P). I tried basic commands like switching ON or OFF the 2 channels ... You have the list of scpi commands in the documentation. It should then be possible to send an arb waveform like TTSource is doing. |
| RFasic:
@ Tinhead and Fremen67, You will find some SA screenshots as follows: - The first one is the output of my HDG2022B ("software only" modified to HDG2102B) running a sinwave at 90MHz with a -10dbm output (400mvpp for the HDG output) already showing limits of the HW design (high DDS spurious and poor noise level) - The second one is taken at a more reasonable frequency of 50MHz (same output level) still showing DDS spurious and high noise floor. - The third one comes from a more serious "calibrated" AWG (G5100A) from PICOTEST (same as KEITHLEY 3390) ....no comments ! BUT if we restrict ourselves to a max frequency of 35MHz .... no more spurious and phase noise degradations... The flatness from 1MHz to 90 MHz is not so bad (in dbm of course) with a +/- 1 db on my sample.... With such a design I cannot belive that HANTEK can release more than the HDG2032B model to his resellers !! PS: > 15 MHz Square waveforms are also terrific on the display of a spectrum analyzer (when compared with the G5100A) |
| fremen67:
And the last one for today: the fan replacement. Exactly like the DSO5000, you can replace the original fan with a less noisy Noiseblocker XS1. As the PSU is different from the DSO5000 (no easy L7812 replacement to lower the fan voltage) I just added a 47R resistor near the fan to decrease voltage from 12V to 9.4V. (I also tried 110R for 8V but quieter enough with 47R). OK, not a big mod but you really apreciate it when it's late and everybody is sleeping :) |
| fremen67:
--- Quote from: RFasic on May 18, 2014, 11:49:41 pm ---The flatness from 1MHz to 90 MHz is not so bad (in dbm of course) with a +/- 1 db on my sample.... --- End quote --- Thanks a lot for all those informations. It seems that I have a serious problem with my MSO as I am the only one to see sine amp decreasing after 30Mhz :( |
| miguelvp:
--- Quote from: RFasic on May 18, 2014, 11:49:41 pm ---BUT if we restrict ourselves to a max frequency of 35MHz .... no more spurious and phase noise degradations... The flatness from 1MHz to 90 MHz is not so bad (in dbm of course) with a +/- 1 db on my sample.... With such a design I cannot belive that HANTEK can release more than the HDG2032B model to his resellers !! --- End quote --- Could it be that the actual HDG2102B has different hardware? The unlock just allows you to push the 2022 harder but maybe it doesn't perform like the actual 2102. |
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