IFR 2399

[tiredtech]

I am looking for a MAINTENANCE manual and/or schematics for the IFR 2399 Spectrum Analyzer. I have the Operations and Programming manuals. I would prefer a PDF. I am tracing down a fault in either the Tracking Generator module (most likely), or possibly a failure in the YIG signal from the RF module feeding the TG. I do not have access to another spec analyzer at this time, especially not above the 3Ghz range. Any help/advice/half-hidden pointing fingers would be appreciated. - tiredtech

[George Edmonds]

Hi

You will look for a long time there are NO schematics available, just an assembly level service manual that is almost useless.   The IFR2399 is a re-badge/factored  LG product from South Korea.

It was repaired on a module exchange basis with all faulty modules going back to LG for repair.

George G6HIG Dover UK

[tiredtech]

George, thanks for the info. Any chance of getting anything out of LG? I had seen some other, older related posts that suggested the "rebranding" from LG but not much else. When I tried to search under LG and then also LIG NEX1 NS-30, I couldn't get much. Any other thoughts or possible leads for thoughts? Thanks, tiredtech.

[George Edmonds]

This is all that is in the 2399 maintenance manual on the TG.

George

[provitek]

Hi George
Do you have the full Maintenance manual?
I am particularly interested in calibration because I became the happy owner of the IFR 2399 but it requires calibration. I would like to see if there are differences between 2398 and 2399. From experiments with communication via RS232 and GPIB I see that some tables have more entries than 2398
If you could share the manual it would be very helpful
Regards,
P

[Jarek]

http://www.ko4bb.com/getsimple/index.php?id=manuals&dir=06_Misc_Test_Equipment/IFR/IFR_2398_Spectrum_Analyzer

[George Edmonds]

Hi

To calibrate a 2399 you need the LG produced calibration software Fcal239xa which is no longer available.  There is a separate piece of software called TGDAC for the tracking generator, again not available.

From a press announcement the entire LG Spectrum Analyzer assets were acquired in 2017  by Aeroflex.

G Edmonds

[provitek]

thx,
I know about software and have read https://www.eevblog.com/forum/repair/aeroflex-ifr-2398-calibration-repair-help/
Ihave all manuals for 2398
I have converted https://github.com/ColbyBurkett/IFR2398-Backup-Restore for 2399 dump via RS232 and GPIB and as far as I can see, there are some differences in table sizes between 2398 and 2399.
 Now I would need some guidance on what is the sequence of commands to perform the calibration. Once I know, writing a script in python won't be too complicated.
If someone have an idea, please share