New Rigol RSA800 Spectrum Analyser

[EEVblog]

https://www.rigol-uk.co.uk/products/spectrum-analysers-vnas/spectrum-analysers/rsa800-series-spectrum-analysers/

In the tiny DHO800 series scope form factor.
4GHz RSA804 is £1,650.00 (£1,980.00 inc. VAT)

[EEVblog]

Oops! 

[Cyclotron]

Oops! 

You know, the Measyrement, its right there between the Armpit and the Mode Meas.

Waiting for daves screwdriver.......

[tszaboo]

It's a real time analyzer, and it includes EMI option.
Comparable from them is the RSA5000 series:

RIGOL Spectrum Analyzer RSA5065N
Max. Ferquency Range 9kHz~6.5GHz
7914 EUR

RIGOL Spectrum Analyzer RSA808
Max. Ferquency range 5 kHz ~ 8.5 GHz
4163 EUR

So, higher bandwidth for half the price...

[Aiy]

I'm curious to see the hackability and hardware construction on these..

On normal RF test gear there normally are different hardware on different frequency tiers, but with Rigol you don't know..

Surely the analysis options are gonna be software, but the frequency options?

I guess we'll have to stay baited until Dave gets one to take apart

Best regards,

[EEVblog]

First shot at a reverse engineered block diagram.

Only thing I don't get is the PCB couplers that seems to be 180deg phase shifting the first 1st IF back into the LO input of the lower frequency path SIM221 mixer. And then also switching it back to the input 
Double checked it, but I could be wrong.
I can only presume this is for self calibration/testing.

Teardown photos:
https://www.flickr.com/photos/eevblog/albums/72177720335391455

[tv84]

Looks nice. Like the heatsink.

Let's wait for the performance.

[Aiy]

Thanks for the photos Dave,

Interesting with the unpopulated footprints.. from the look of it I'd say the VNA shares the same board, just with different components on it.

I was not expecting to see the TI LMX2820 in there, premium component - that's a surprise.

Can you pop a UART on the pin header and post some logs?

Boundary scan on the JTAG?

Looking forward to the Video when it comes out!

[EEVblog]

[Martin72]

I've never seen such a simple yet impressive example of the difference between SA and RTA as in this video with the remote control.

[pdenisowski]

Oops! 

Actually, I think I saw that spelling in Chaucer: Here bigynneth the Teste and Measyrement Enginerees Tale ....

[pdenisowski]

I've never seen such a simple yet impressive example of the difference between SA and RTA as in this video with the remote control.

Lots of RF field applications engineers (myself once included) have used that same trick for various demonstrations when they don't have a signal generator handy

Another fun thing you can do with most keyfobs in the United States is place them next to a GPS receiver to simulate over-the-air impairments or jamming.  Keyfobs here are usually at 315 MHz, the 5th harmonic of which is the GPS L1 frequency (1575 MHz).  If you place an American key fob right next to a GPS receiver antenna and keep pressing the button, most receivers will lose lock within about 30 seconds, at least in my experience.

(Keyfobs usually have relatively poor harmonic suppression)

[EEVblog]

[CC12068]

no sd cards this time... it's an emmc
bad news maybe....?

[Stanislaw]

First shot at a reverse engineered block diagram.

Only thing I don't get is the PCB couplers that seems to be 180deg phase shifting the first 1st IF back into the LO input of the lower frequency path SIM221 mixer. And then also switching it back to the input 
Double checked it, but I could be wrong.
I can only presume this is for self calibration/testing.

The main function of the zero‑IF suppression circuit is to cancel the local‑oscillator leakage signal coupled into the intermediate‑frequency path, so that the spectrum analyzer achieves improved noise floor performance in the very low frequency band.