General > General Technical Chat

Review: Hantek DDS 3X25. Anyone own one?

<< < (32/108) > >>

Mechatrommer:

--- Quote from: torch on May 12, 2011, 09:23:49 pm ---BTW: I should mention that the sinusoidal waveform is very clean all the way up to 100mhz, and at that speed, the SYNC OUT is also sinusoidal.

--- End quote ---
its not the 100MHz SYNCH OUT is sinosuidal, it is still squared. its just the oscilloscope BW/sample rate limitation showing it as sinosuidal.

alm:

--- Quote from: Lunat1c on May 12, 2011, 07:36:56 am ---From what I've been reading on DDSs, this piece of hardware seems to be the best bang for the buck AWG. The Instek SFG1003 provides signals up to 3MHz while this one has more features and has a higher frequency range for the same price. Please correct if I'm wrong as I'm a beginner when it comes to this stuff and wouldn't wanna be disappointed if i purchase this :)

--- End quote ---
The amplitude range is much more limited compared to most stand-alone function generators like the SFG-1003. Depending on how and why you work, the lack of front panel may also be an annoyance. I find that I like computer control for complicated stuff like arbitrary functions (which I use fairly rarely), but prefer real knobs and displays for simple stuff like generating a sine and adjusting frequency until I get the result I'm looking for.


--- Quote from: Mechatrommer on May 13, 2011, 04:06:37 am ---its not the 100MHz SYNCH OUT is sinosuidal, it is still squared. its just the oscilloscope BW/sample rate limitation showing it as sinosuidal.

--- End quote ---
Is it just BW limitations in the scope, or also the generator? What's the rise time spec for the SYNC out?

saturation:
If the current trend to iPad popularity continues, more widespread touch screens enabled laptops will be commonplace and be a better emulator for hardware knobs.  Although you can only move one knob at a time, and there is no physical knob sensation or feedback, its far faster than the PC keyboard or mouse to actuate controls.

Mechatrommer:

--- Quote from: alm on May 14, 2011, 11:47:12 am ---Is it just BW limitations in the scope, or also the generator? What's the rise time spec for the SYNC out?

--- End quote ---
err, i was just assuming. since the synch out comes directly from spartan pin, so probably its digital instead of sine. gotta look the very detail of spartan datasheet for this.

Lunat1c:
just to confirm that I'm not misinterpreting the spec sheet of this device... is the maximum amplitude really +-3.5V?

Navigation

[0] Message Index

[#] Next page

[*] Previous page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod