Author Topic: Open Source DIY HP/Agilent 53131A 53132A 3Ghz Option 030  (Read 996 times)

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Online RoadRunner

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Open Source DIY HP/Agilent 53131A 53132A 3Ghz Option 030
« on: August 06, 2018, 06:14:55 am »
I have bought my self 53132A and upgraded it with OCXO and 3Ghz option.
As there was no open source design available so i made my own , here the project page.
https://www.circuitvalley.com/2018/08/agilent-53132a-53131a-diy-open-source-3ghz-channel-option-030-board-hp.html


There is short video and few test.

 
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Online jadew

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Re: Open Source DIY HP/Agilent 53131A 53132A 3Ghz Option 030
« Reply #1 on: September 13, 2018, 03:41:45 am »
I have bought my self 53132A and upgraded it with OCXO and 3Ghz option.
As there was no open source design available so i made my own , here the project page.
https://www.circuitvalley.com/2018/08/agilent-53132a-53131a-diy-open-source-3ghz-channel-option-030-board-hp.html


This is a direct clone of the HP design (straight form their service manual). Are you even allowed to opensource that? let alone claim that you made it.

Edit:
Also, those resistors you marked as anti-surge, in your schematic - that's not what they are.

As a disclaimer, I also sell a prescaler board for that counter, and it's similar to HP's design because there aren't many ways in which you can achieve this, especially at this price. Mine has better specs tho.
« Last Edit: September 13, 2018, 04:10:57 am by jadew »
 

Online RoadRunner

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Re: Open Source DIY HP/Agilent 53131A 53132A 3Ghz Option 030
« Reply #2 on: September 13, 2018, 05:14:56 am »
I have bought my self 53132A and upgraded it with OCXO and 3Ghz option.
As there was no open source design available so i made my own , here the project page.
https://www.circuitvalley.com/2018/08/agilent-53132a-53131a-diy-open-source-3ghz-channel-option-030-board-hp.html


This is a direct clone of the HP design (straight form their service manual). Are you even allowed to opensource that? let alone claim that you made it.

Edit:
Also, those resistors you marked as anti-surge, in your schematic - that's not what they are.

As a disclaimer, I also sell a prescaler board for that counter, and it's similar to HP's design because there aren't many ways in which you can achieve this, especially at this price. Mine has better specs tho.

Schematic is already open from Agilent, Making own PCB designed based on any schematic absolutely allowed. I can definitely make open source what i made.

As per Bill of material input 10Ohm 2512 Resistor is definitely anti surge register.

Can you please say how your design has better specs?
Better sensitivity?
 

Online jadew

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Re: Open Source DIY HP/Agilent 53131A 53132A 3Ghz Option 030
« Reply #3 on: September 13, 2018, 05:28:36 am »
Can you please say how your design has better specs?
Better sensitivity?

Yeah, much better sensitivity.
 

Online RoadRunner

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Re: Open Source DIY HP/Agilent 53131A 53132A 3Ghz Option 030
« Reply #4 on: September 13, 2018, 05:45:58 am »
Can you please say how your design has better specs?
Better sensitivity?

Yeah, much better sensitivity.

i have tested my design upto -45dBm , which is way better than Agilent Spec.
what are your values?
 

Online jadew

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Re: Open Source DIY HP/Agilent 53131A 53132A 3Ghz Option 030
« Reply #5 on: September 13, 2018, 06:11:37 am »
i have tested my design upto -45dBm , which is way better than Agilent Spec.
what are your values?

-45 dBm at what frequency?


The best I got was -70 dBm on one board, but in a limited BW. The typical values are better than -45 dBm across most of the range, with almost every board hitting -60 dBm at some point.

For example (typical values, not best):
-49 dBm @ 500 MHz
-53 dBm @ 1 GHz
-53 dBm @ 2 GHz
-44 dBm @ 3 GHz
 

Online RoadRunner

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Re: Open Source DIY HP/Agilent 53131A 53132A 3Ghz Option 030
« Reply #6 on: September 13, 2018, 06:47:13 am »
i have tested my design upto -45dBm , which is way better than Agilent Spec.
what are your values?

-45 dBm at what frequency?


The best I got was -70 dBm on one board, but in a limited BW. The typical values are better than -45 dBm across most of the range, with almost every board hitting -60 dBm at some point.

For example (typical values, not best):
-49 dBm @ 500 MHz
-53 dBm @ 1 GHz
-53 dBm @ 2 GHz
-44 dBm @ 3 GHz

Thank you for numbers.
I do not have a real good RF Generator. I have function gen only upto 120Mhz. And my little RF Gen output level is not adjustable freely.
I can not test sensitivity at more than 120Mhz, i have sent this board to some one who has tested it, sensitivity was better at higher frequency.

Regards
« Last Edit: September 13, 2018, 07:38:38 am by RoadRunner »
 

Online jadew

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Re: Open Source DIY HP/Agilent 53131A 53132A 3Ghz Option 030
« Reply #7 on: September 13, 2018, 06:55:50 am »
Thank you for numbers.

N.P.


Cheers


Edit:
I do not have a real good RF Generator. I have function gen only upto 120Mhz. And my little RF Gen output level is not adjustable freely.
I can not test sensitivity at more than 120Mhz, i have sent this board to some one who has tested it, sensitivity was better at higher frequency.

A manual step attenuator would go a long way, but they're not as flat as you'd want them to be.
« Last Edit: September 15, 2018, 01:06:33 pm by jadew »
 


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