Author Topic: Advantest R3273 / R3267 Repair  (Read 17944 times)

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Offline chick0nTopic starter

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Re: Advantest R3273 / R3267 Repair
« Reply #50 on: May 08, 2023, 09:38:22 pm »
In search for the DEBUG MENU Access, I extracted some undocumented GPIB Commands from the DFM file.
No Luck so far.

Maybe someone else wants to try.

Especially interesting ones:
$AR
$AW
$DDS
$EPR
$EPW
$FBFIX
$FCRD
$FR10
$FR5
$FSK
$FW10
$FW5
$R
$RAMP
$RF
$SR
$SW
$W
$WF
$YSWP

I think RAM / ROM Read and Write is possible. So be careful...
« Last Edit: May 08, 2023, 09:40:37 pm by chick0n »
 

Offline newtech95

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Re: Advantest R3273 / R3267 Repair
« Reply #51 on: June 02, 2023, 10:48:59 am »
Have you checked the module in the red frame?
 

Offline 3g57

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Re: Advantest R3273 / R3267 Repair
« Reply #52 on: January 10, 2024, 10:02:22 am »
Look here.
Advantest R3273 and R3267 blocks are different.#
#10 its from Advantest R3273
3g57
« Last Edit: January 10, 2024, 11:19:12 am by 3g57 »
 

Offline 3g57

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Re: Advantest R3273 / R3267 Repair
« Reply #53 on: February 08, 2024, 02:45:04 pm »
Added, low level problem of R3267.

Hello Ginji!
Question: did you solve the problem with the signal level?
 

Offline chick0nTopic starter

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Re: Advantest R3273 / R3267 Repair
« Reply #54 on: April 03, 2024, 09:44:15 am »
jjoonathan Uploaded a Calibration tool to Github. Maybe its helpful to someone:

"Hi! I went and uploaded my R3273 code here: https://github.com/jjoonathan/R3273-calibration . This should help with level correction, but I'm afraid I never figured out YIG correction due to the existing YIG calibration being quite satisfactory in contrast to the HP8565E in the video. I pointed out my best lead, though: there is a suspicious unknown "field5" in the cal data that might just hold the yig cal. Good luck!"

His youtube channel:
 

Offline chick0nTopic starter

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Re: Advantest R3273 / R3267 Repair
« Reply #55 on: June 24, 2024, 08:12:47 am »
I repaired a R3273 Tracking-Generator module. The MC12093 Prescaler Chip on underside of PLL Board was broken.

Maybe its helpful to someone.
« Last Edit: June 24, 2024, 08:39:35 am by chick0n »
 
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Offline Davide_M

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Re: Advantest R3273 / R3267 Repair
« Reply #56 on: January 05, 2025, 05:28:10 pm »
Hello!

I have an Advantest R3267 with options 01, 01, 08, 62 and in 3GPP mode fails the “DC CAL” and “Gain Cal” tests.

In both tests the message appears “Error 703 - Modulation DC CAL error” (see attached image).

Unfortunately I searched in the service manual and in the various forums but but I haven't found any indications that can help me understand the cause (I assume it's the Synthesizer block is fault).

All other tests and calibration it passes successfully.

Could you help me? Any ideas?

Thanks!
 

Offline Gyorgy Albert

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Re: Advantest R3273 / R3267 Repair
« Reply #57 on: January 05, 2025, 06:35:25 pm »
Hi Davide, and Happy New Year!

All the 6x (61, 62, and so an) options needs the DSP module, which is option 01. The error 703 which appears on your R3273 is related to the calibration routines of the DSP module. To proceed with this calibration, the CAL signal must be disconnected from the RF input, as the message indicates “Remove input signals and try again”. Hopefully this time the calibration routines will pass.

Best regards,
Gyorgy
 

Offline 3g57

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Re: Advantest R3273 / R3267 Repair
« Reply #58 on: January 06, 2025, 05:09:18 pm »
I repaired a R3273 Tracking-Generator module. The MC12093 Prescaler Chip on underside of PLL Board was broken.

chick0n!
Good day!
Happy New Year!
This winter, closer to spring, we will do preventive maintenance ADVANTEST R3273.
I think there will be an opportunity to look at the Tracking-Generator module.
What questions did you have about it?
Write.
With respect 3G57.

R32,R40?

28" border="0
29" border="0
« Last Edit: January 07, 2025, 11:38:01 am by 3g57 »
 

Offline chick0nTopic starter

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Re: Advantest R3273 / R3267 Repair
« Reply #59 on: January 07, 2025, 02:58:03 pm »
yes..position of R32,R40

A Picture of the Underside of your Tracking Module, would be nice.
 

Offline Gyorgy Albert

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Re: Advantest R3273 / R3267 Repair
« Reply #60 on: January 07, 2025, 04:04:44 pm »
3g57, chick0n,

Could you take as much possibe high resolution pictures of the TG module pcb-s while you are working on it? I have multiple R3267 and R3273 units (it is one of my obsessions), but none of them has the tracking generator. I am thinking about making one myself (it is not something impossible at all). The key is, if I/we can decipher the paralel bus connection and communication to the main circuit board. Since I do not have one unit with TG, I cannot do this, but maybe if you will help (and maybe other forum members too), it can be done.

What I conclued from your pictures: On the control board the U20, is probably a Lattice CPLD used for paralel BUS to serial conversion. The U4, U6, U21, U22 are the bus transceivers and glue logic between the bus and the Lattice chip.  The U7 (25C16) should be the EEPROM for the calibration coefficients. To get its exact content will be very important. It is an SPI EEPROM, the interface (the Lattice CPLD) between the SPI and paralel BUS of the M68K system is made similarly as in the case of the RF module. 

In one of my units, which has option 21, I noticed that the preicsion OCXO is installed in a similar enclosure as the TG module (obviously, it is missing the upper RF part). But it seems, that the bottom control board should be similarly. The programming of the AD9850 can be made probably using the same SPI serial interface. I will disassembly the option 21 module, maybe I will be lucky, and it has a complete control board (maybe almost identical with the TG control board). This also means, that the TG and the option 21 cannot be used in the same time.

BR, Gyorgy
 

Offline chick0nTopic starter

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Re: Advantest R3273 / R3267 Repair
« Reply #61 on: January 07, 2025, 04:18:34 pm »
I made a copy of the TG Module EEPROM.

Yes...every Module in the R3273 has the Lattice Chip, and a CAL EEPROM.
 
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Offline 3g57

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Re: Advantest R3273 / R3267 Repair
« Reply #62 on: January 07, 2025, 07:48:55 pm »
Albert!
I'll try to do this during his preventive maintenance.
 

Offline 3g57

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Re: Advantest R3273 / R3267 Repair
« Reply #63 on: January 07, 2025, 08:03:37 pm »
yes..position of R32,R40

R32,R40 I will take measurements without dismantling from the middle terminal to the left and right without changing the polarity of the probe.
 

Offline chick0nTopic starter

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Re: Advantest R3273 / R3267 Repair
« Reply #64 on: January 08, 2025, 10:21:01 am »
3g57, chick0n,

Could you take as much possibe high resolution pictures of the TG module pcb-s while you are working on it? I have multiple R3267 and R3273 units (it is one of my obsessions), but none of them has the tracking generator. I am thinking about making one myself (it is not something impossible at all). The key is, if I/we can decipher the paralel bus connection and communication to the main circuit board. Since I do not have one unit with TG, I cannot do this, but maybe if you will help (and maybe other forum members too), it can be done.

What I conclued from your pictures: On the control board the U20, is probably a Lattice CPLD used for paralel BUS to serial conversion. The U4, U6, U21, U22 are the bus transceivers and glue logic between the bus and the Lattice chip.  The U7 (25C16) should be the EEPROM for the calibration coefficients. To get its exact content will be very important. It is an SPI EEPROM, the interface (the Lattice CPLD) between the SPI and paralel BUS of the M68K system is made similarly as in the case of the RF module. 

In one of my units, which has option 21, I noticed that the preicsion OCXO is installed in a similar enclosure as the TG module (obviously, it is missing the upper RF part). But it seems, that the bottom control board should be similarly. The programming of the AD9850 can be made probably using the same SPI serial interface. I will disassembly the option 21 module, maybe I will be lucky, and it has a complete control board (maybe almost identical with the TG control board). This also means, that the TG and the option 21 cannot be used in the same time.

BR, Gyorgy

Your Option 21 looks strange. Looks Interesting.
I think your Picture shows Option 25 "Reference Converter". With this, you can have 3 different Reference Input Frequencies (10 MHz, 15 MHz, 19.6608 MHz) As the Datasheet mentions you cant have OPT74 TG and OPT25 at the same time, this would make sense. I have a OPT21 OCXO, but its bolted on the underside of the RF Deck.

About TG Module. PLL Board.

it contains a VARIL "VCO690-4300T" VCO (4.2GHz - 4.4GHz). A LMX2306 PLL. A AD9850 DDS Synthesizer. And a MC12093 Prescaler.

If I remember correctly, the 4GHz from the VCO gets prescaled by "Voodoo Magic :)" to 550MHz range for the PLL IC (I think, the white 5 Pin component with the Red dot, close to R218 does this).

The 200MHz Reference Frequency, gets prescaled by 4, wents into the DDS IC and the Output of the DDS wents into the LMX2306 OSC Input.


The TG Module contains 3 PCBs. I call them

"Adapter Board": Contains the Lattice Chip and CAL EEPROM.

"PLL Board" Contains VCO, PLL,DDS.

"Mixer Board": Contains Mixer, Input / Output MMICs, Filters, RF Diodes.
 


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