SDRplay 2 TCXO PN and external locking

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Conrad Farlow
Posts: 4
Joined: Fri May 19, 2017 11:02 am

SDRplay 2 TCXO PN and external locking

Postby Conrad Farlow » Fri May 19, 2017 11:29 am

Hello all, I have 24MHz GPSDO. I was wondering what the PN of the internal TCXO is, just to ascertain that my 24MHz TCXO will not degrade performance significantly. I am just running the 24 MHz oscillator on an FSUP to measure the PN this afternoon.

I presume that there is a PLL on the TXCO when an external 24MHz signal is present?

Regards

Conrad Farlow PA5Y
Last edited by Conrad Farlow on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
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Conrad Farlow
Posts: 4
Joined: Fri May 19, 2017 11:02 am

Re: SDRplay 2 TCXO PN and external locking

Postby Conrad Farlow » Mon May 22, 2017 12:06 pm

So this information is not available? Ok then I will measure it myself.

Regards

Conrad PA5Y
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Conrad Farlow
Posts: 4
Joined: Fri May 19, 2017 11:02 am

Re: SDRplay 2 TCXO PN and external locking

Postby Conrad Farlow » Mon May 22, 2017 12:23 pm

I found the schematics here:
http://sdrplay.com/docs/SDRplay_RSP_Schematics_r2p2.pdf

So I see from this that the TCXO is not shown as such, rather a simple Xtal oscillator. The datasheet shows a TCXO and I have found the frequency accuracy to be quite good out of the box.

What is also not evident on the schematic is how the external clock is connected. I like to know these things out of interest.

Perhaps you could give me the part number of the TCXO and I can look up the spec for myself?

Regards

Conrad PA5Y
Last edited by Conrad Farlow on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
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Conrad Farlow
Posts: 4
Joined: Fri May 19, 2017 11:02 am

Re: SDRplay 2 TCXO PN and external locking

Postby Conrad Farlow » Wed May 24, 2017 2:45 pm

Did I post this in the wrong place, nobody has anything to say about this? I am overwhelmed to be honest.

Regards

Conrad
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Tech_Support
Posts: 184
Joined: Mon Jun 01, 2015 7:00 pm

Re: SDRplay 2 TCXO PN and external locking

Postby Tech_Support » Fri May 26, 2017 2:45 pm

Hello Conrad,
The schematics you have shown are for the RSP1 and not the RSP2. The RSP2 does use a TCXO. We have an application note on how to set the RSP2 up with an external clock. It can be found on our website at:

http://www.sdrplay.com/docs/SDRplay_RSP ... e_R1P0.pdf

Sincerely

SDRplay Tech_Support

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