Author Topic: Calibrating 53132A  (Read 15208 times)

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Offline glarsson

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Re: Calibrating 53132A
« Reply #25 on: November 02, 2017, 05:23:13 am »
I guess "2" is only worthwhile if A is generated say 10 meters away and B is local and you only have one long coax.
 

Offline texaspyro

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Re: Calibrating 53132A
« Reply #26 on: November 04, 2017, 04:54:33 pm »
The board house has said the new boards have shipped DHL express.
 

Offline texaspyro

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Re: Calibrating 53132A
« Reply #27 on: November 09, 2017, 12:26:29 am »
Bare boards have arrived... they look good. 

Now to build one up and see if the new layout and 1mm board thickness / 50 ohm signal traces make any measurable difference.
 

Offline texaspyro

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Re: Calibrating 53132A
« Reply #28 on: November 12, 2017, 04:19:05 am »
Now to build one up and see if the new layout and 1mm board thickness / 50 ohm signal traces make any measurable difference.

Oh, yeah... it made a difference.   A horrible difference.   Massive ringing on the outputs.   Massive coupling of crapitude onto the precision 5.000V gain cal signal and elsewhere.   Damn... looks like yet another spin of the board... back to the original layout with only the switch connections fixed.    I'm also changing the 50 ohm input terminator to a 1 watt one.  We'll see how it turns out in a couple of weeks...
 

Offline texaspyro

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Re: Calibrating 53132A
« Reply #29 on: November 27, 2017, 07:50:09 pm »
I have send the next rev of the calibrator off to the fab.   I replaced the output driver chip with a 74ACT245.   This allowed for a MUCH cleaner layout with shorter traces and better power distribution.  Also, all the SMT passives are oriented in the same direction which will make the assembler happier.
 

Offline VK5RC

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Re: Calibrating 53132A
« Reply #30 on: November 27, 2017, 10:21:01 pm »
If there is a spare kit,  please count me in.
Thanks, Rob.
Whoah! Watch where that landed we might need it later.
 

Offline texaspyro

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Re: Calibrating 53132A
« Reply #31 on: November 28, 2017, 12:13:01 am »
If there is a spare kit,  please count me in.

I've got boards and parts to build 50 units... 
 
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Offline Tony_G

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Re: Calibrating 53132A
« Reply #32 on: November 28, 2017, 03:00:46 am »
Outstanding. Please let me know how much plus shipping to 98056 and I'll shoot that over to your PayPal account.

Looking forward to it.

TonyG

Offline texaspyro

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Re: Calibrating 53132A
« Reply #33 on: November 28, 2017, 03:06:24 am »
Outstanding. Please let me know how much plus shipping to 98056 and I'll shoot that over to your PayPal account.

The new boards should be here in a couple of weeks... hopefully.

I'll know more about the price when I get a new quote from a different assembly house.  The one that built my Symmerticom X72 breakout boards screwed me royally (quoted soldering the through hole parts and then refused to do them...  I spend all weekend soldering a BUNCH of connectors and de-fluxing the boards).

I'm still shooting for something around $30 assembled.
 

Offline texaspyro

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Re: Calibrating 53132A
« Reply #34 on: December 07, 2017, 02:27:11 am »
New PC boards have been shipped.  Should be in early next week.  All the new parts and a stainless SMT stencil have arrived.
 
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Offline texaspyro

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Re: Calibrating 53132A
« Reply #35 on: December 16, 2017, 03:10:57 am »
New PC boards have been shipped.  Should be in early next week.  All the new parts and a stainless SMT stencil have arrived.

New layout boards arrived today.  I built one up and it seems to be working well.   I'm still trying to get a non-stupid quote from some assembly houses.

I thought I had a problem because it was failing to calibrate the counter.  I then checked my older rev boards and those were failing too.  Turned out to be a coax with a broken wire... now I remember why I colored that BNC with a red marker.  |O   Enough signal was getting through the gap to trigger the input stage and the outputs looked stable on a scope but were miserable when evaluated by an ADEV analysis.
 
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Offline HighVoltage

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Re: Calibrating 53132A
« Reply #36 on: December 16, 2017, 10:58:43 am »
I have two more 53132A for repair and I am looking forward to your finished product.
There are 3 kinds of people in this world, those who can count and those who can not.
 

Offline texaspyro

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Re: Calibrating 53132A
« Reply #37 on: December 17, 2017, 07:17:03 pm »
I did a test of the newer calibrator board signal stability.  I fed the input with the 10 MHz sine wave from an HP-5071A cesium beam oscillator and fed the output to a TAPR TICC.  I used Lady Heather to calculate the xDEVs of the output signals.   At 10,000 seconds the ADEV value was in the 6E-15 range... not too shabby!

The outputs do have ringing on them, but the counter's calibration routine uses the zero crossing point which is quite stable.

The HP docs say for the gain calibration to input a 5.000V +/- 1mV signal.   The LM4040A voltage reference chips that I am using seem to be within +/- 2 mV.  Should not be an issue since the A/D and D/A chips in the counter are not that accurate.  You can always use your own voltage source for the gain cal.
 

Offline Tony_G

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Re: Calibrating 53132A
« Reply #38 on: January 04, 2018, 03:25:39 pm »
Just wanted to check in and see how it is going?

TonyG

Offline texaspyro

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Re: Calibrating 53132A
« Reply #39 on: January 04, 2018, 06:21:05 pm »
Just wanted to check in and see how it is going?

I have the latest PCBs in from China.  I built one up and it seems to working well.   I sent it to TVB for his very expert evaluation.  He is quite busy this month.  I am currently looking for somebody to assemble them for a reasonable price.
 

Offline kj7e

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Re: Calibrating 53132A
« Reply #40 on: February 26, 2018, 03:28:03 pm »
Just picked up a 53132A with the OEM installed options 10 and 30.  Interested in both doing a firmware update and a full cal, so put me on the list for one of the cal boards please.
 

Offline texaspyro

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Re: Calibrating 53132A
« Reply #41 on: February 26, 2018, 06:49:14 pm »
I'm still waiting for TVB to do some higher end testing of the completed board.   He has been tied up on a long-ish project for the last several weeks.   That is apparently completed and hopefully he will be able to get to the board soon.
 
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Offline SrS

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Re: Calibrating 53132A
« Reply #42 on: February 27, 2018, 10:00:25 am »
Put me on the list as well. No rush ;)
 

Offline DF20bug

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Re: Calibrating 53132A
« Reply #43 on: August 01, 2018, 04:17:22 pm »
I just came across this while searching for a J06-59992A.  Is your board available at this time?  I'm transferring some 12GHz boards from a 53132A and am having to do a complete recalibration of the unit.
 
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Offline Tony_G

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Re: Calibrating 53132A
« Reply #44 on: August 01, 2018, 04:27:43 pm »
I just came across this while searching for a J06-59992A.  Is your board available at this time?  I'm transferring some 12GHz boards from a 53132A and am having to do a complete recalibration of the unit.

Just reposting my interest as well - Those J06-59992A seem to be as rare as hen's teeth.

DF20Bug - I hear you're shutting down the Texas facility and retiring (was talking to a friend in Denmark that mentioned it) - Enjoy the retirement it was great doing business with you previously.

TonyG

Offline texaspyro

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Re: Calibrating 53132A
« Reply #45 on: August 01, 2018, 06:58:42 pm »
I have the bare PCBs and parts but have been waiting for TVB to do some testing.  Also, I've been tied up  (and out of town) on the Neverending Project From Hell for most of this summer.

I hope to these built by the end of August.
 
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Offline dekagon

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Re: Calibrating 53132A
« Reply #46 on: January 03, 2019, 01:42:27 pm »
I have the bare PCBs and parts but have been waiting for TVB to do some testing.  Also, I've been tied up  (and out of town) on the Neverending Project From Hell for most of this summer.

I hope to these built by the end of August.
Hope this thread will be still read  ???

@texaspyro
If you have finished the boards I would take two of them...


Regards Chris
---
 
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Offline SrS

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Re: Calibrating 53132A
« Reply #47 on: September 05, 2019, 08:35:41 pm »
I have the bare PCBs and parts but have been waiting for TVB to do some testing.  Also, I've been tied up  (and out of town) on the Neverending Project From Hell for most of this summer.

I hope to these built by the end of August.

Hate to resurrect this thread but where you able to make any progress on these calibrator boards?

While I certainly appreciate the time you've put into the development, can't it (or the obsolete J06-59992A) be replaced with a modern waveform generator as long as you have a stable 10MHz & 5V source?
 

Offline FransW

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Re: Calibrating 53132A
« Reply #48 on: September 06, 2019, 08:44:30 am »
Hi,

I am very intersted in a populated board.
My age, hands and eyes are not what they used to be.

Please add my name to the pist.

Thanks,  Frans
PE1CCN, Systems Engineering, HP, Philips, TEK, BRYMAN, Fluke, Keithley
 

Offline giovannirat

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Re: Calibrating 53132A
« Reply #49 on: September 08, 2019, 10:05:15 am »
I am also interested in a populated board.
Add me to the list, one board please, if available.

Thank you very much
 


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