#RIGOL DSA815 TG FROM CHINA GENERATOR#
#RIGOL DSA815 TG FROM CHINA UPDATE#
#RIGOL DSA815 TG FROM CHINA PORTABLE#
#RIGOL DSA815 TG FROM CHINA PLUS#

it is very fun example if minimum RBW is 1kHz or even more and manufacturer use dBmHz but talk dBm. they (manufacturers) do not want use it) (yes manufacturers do not always clearly tell this dBm/Hz. (DANL) dBm/Hz !!! And even more, what really this average mean in practice working. 150dBm in 50ohm system means that voltage rms is around 7.071nV (7071pV) dBm is power related to 1mW (this m is for mW) With 100Hz RBW it is (if -150dBm/Hz) around -130dBm (dependent also littlebit RBW filter shape specs) It need really understand what mean this noise level.

The MMDS system was used in Ireland and the USA for certain so you should be able to find a supplier via ebay or a Google search. Try building a decent down converter for that sort of money.you'll be hard pressed to do so. Perfect for some 2.4GHz monitoring Mine is UK sourced and was only GBP19 !!!! Great VFM. Its a great way to improve a spectrum analysers frequency coverage but you do lose any calibrated amplitudes as the MMDS converter has masses of gain The models I use were designed to fit a dish so had a dipole feed attached. Take a look here (this is similar to my units) Commercial units are well built, low noise and stable. Hi Sonicj, If you need to downconvert 2.4GHz to a sub 1GHz frequency, I recommend you consider adapting a ready built device rather than trying to build one as it is quicker and simpler especially if you don't have a 3GHz spectrum analyser I have modified MMDS downconverters for such a task. Web links for you to look at: Just my 2 Cents worth. They are relatively cheap, easy to use and designed for the task of monitoring ISM band activity with good sensitivity and level indication. IMHO no techie interested in ISM band stuff should be without one of these or similar units from Metageek. My Airview2 units cost me only GBP30 ($45!) + p&p from the USA. These units use dedicated ISM band receivers that provide 300kHz RBW which is sufficient for Wi-Fi, Bluetooth, Wreless cameras, RF ISM eavesdroppers & data links etc.

#RIGOL DSA815 TG FROM CHINA PLUS#

I have a couple of them plus a cheaper Chinese version. If you are interested in viewing the 2.4 GHz ISM band, I can highly recommend the Ubiquiti Airview2. I personally would not buy this unit without first seeing it in the flesh or reading a review from a trusted source that details its true performance rather than just quoting manufacturers specs. That's how people used to use older spectrum monitors that had no calibrated amplitude.

#RIGOL DSA815 TG FROM CHINA GENERATOR#

To obtain true RF level readings you would need a calibrated signal generator operating in the same frequency range and use the comparative level method of level measurement. You can always build a simple downconverter for a particular area of the microwave spectrum. A poor implementation of FFT on a cheap spectrum analyser would be awful to use. Anything that used DSO type techniques involving FFT should be carefully scrutinised.

MAX hold will eventually build up an 'image' of the hopper but it can take a much longer time than a YIG equipped unit.

Such spectrum analysers can be fine for static carriers but spread spectrum and frequency hopping can be a challenge for them.

#RIGOL DSA815 TG FROM CHINA UPDATE#

The result can be very slow sweep update speeds due to the PLL lock limits and VCO settling times.

#RIGOL DSA815 TG FROM CHINA PORTABLE#

Some cheaper and more portable spectrum analysers have gone down the path of swept VCO's instead of a YIG oscillator. My R4131D's use a YIG oscillator for the 1st LO and these can sweep a broad frequency range at excellent speeds to provide very fast scans of the spectrum even at 0-3500MHz spans. But they did cost GBP15K new ! I would be tempted by the Rigol for portable work but I have some 1GHz units for that so can't justify the purchase Now the bit that may not be so good. I am using 3.5GHz Advantest R4131D's as I love their design and build.

Rigol dsa815-tg from china