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| Hantek HDG2002B AWG: 5Mhz or 100MHz? Let's see! |
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| Howardlong:
Age is creeping up on me, I did some tests before here: https://www.eevblog.com/forum/testgear/hantek-hdg2002b-awg-5mhz-or-100mhz-let's-see!/msg759319/#msg759319 I didn't get any ringing. The firmware used is from the link mentioned here: https://www.eevblog.com/forum/testgear/hantek-hdg2002b-awg-5mhz-or-100mhz-let's-see!/msg753380/#msg753380 --- Quote from: Howardlong on September 20, 2015, 07:50:29 am ---All below with 50 ohm termination, scope is Agilent/Keysight MSO7104B 1GHz BW scope at 4GSa/s. 10MHz square wave with different amplitudes to check output buffer slew rate. 8 averages taken. 100mVp-p (50mVp-p with 50 ohm termination) 500mVp-p (250mVp-p with 50 ohm termination) 1Vp-p (500mVp-p with 50 ohm termination) 10Vp-p (5Vp-p with 50 ohm termination) --- End quote --- |
| Berni:
--- Quote from: Howardlong on December 03, 2015, 12:35:40 pm ---Age is creeping up on me, I did some tests before here: https://www.eevblog.com/forum/testgear/hantek-hdg2002b-awg-5mhz-or-100mhz-let's-see!/msg759319/#msg759319 I didn't get any ringing. The firmware used is from the link mentioned here: https://www.eevblog.com/forum/testgear/hantek-hdg2002b-awg-5mhz-or-100mhz-let's-see!/msg753380/#msg753380 --- End quote --- Hmm interesting. For you there seams to be a tad of undershoot before it settles in. Might be that there are some hardware changes going on. Would also explain why mine has almost twice as fast of a rise time. I am guessing there is a different value cap somewhere in the AFE. |
| Howardlong:
--- Quote from: Berni on December 03, 2015, 12:50:11 pm --- --- Quote from: Howardlong on December 03, 2015, 12:35:40 pm ---Age is creeping up on me, I did some tests before here: https://www.eevblog.com/forum/testgear/hantek-hdg2002b-awg-5mhz-or-100mhz-let's-see!/msg759319/#msg759319 I didn't get any ringing. The firmware used is from the link mentioned here: https://www.eevblog.com/forum/testgear/hantek-hdg2002b-awg-5mhz-or-100mhz-let's-see!/msg753380/#msg753380 --- End quote --- Hmm interesting. For you there seams to be a tad of undershoot before it settles in. Might be that there are some hardware changes going on. Would also explain why mine has almost twice as fast of a rise time. I am guessing there is a different value cap somewhere in the AFE. --- End quote --- For the avoidance of doubt, probing was with a direct BNC-BNC 50 ohm patch lead and using the scope's internal 50 ohm termination. |
| Berni:
--- Quote from: Howardlong on December 03, 2015, 12:53:22 pm --- For the avoidance of doubt, probing was with a direct BNC-BNC 50 ohm patch lead and using the scope's internal 50 ohm termination. --- End quote --- Same here. 1m of BNC to BNC coax cable going in to a 50 Ohm terminated scope input from Ch1 of the signal gen. So i guess these Hanteks might not be the most consistent. But the jitter tests should be valid for all of them since they don't have a fractional clock generator for its DAC |
| jashugan:
Hello, I made a complete calibration (channel 1 and 2), but I got at least two problems: 1) On channel 1, the calibration has been performed and gets good values up to 35 MHz, after which the waveform reduces its value. Very good DC values has been obtained. I can't reach nowhere near the 100 MHz, because after let's say 60 MHz the waveform is almost flat. 2) On channel 2, I have the same frequency response of channel 1, but I don't have good DC values. I can't calibrate them, and more, if I output let's say 5 V DC, the AWG outputs -5 V more or less. Anyway, I modified the original script to work with Tektronix MDO3014 I have. I think it should work for all MDO3000 and MDO4000 series. |
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