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| EIP 545B Frenquency counter |
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| HighPrecision:
--- Quote from: Ash on May 18, 2018, 01:06:45 pm ---So, on my unit the entire range between 0x0800 and 0x0FFF is "blank" (0xFF). It doesn't appear to have any non-volatile ram, at least in that range. I guess my entire memory map is different that I have found in the available service manuals.. My EIP 575 has A105 (CPU) board part number 2020195 (-01 hand written) if that helps at all.. probably not.. Maybe HighPrecision can shed some light on the older '575 units? The model and serial numbers read: Mod: 575 CCN 1802 --- End quote --- Hi Ash, Between A105 old type (2020195-xx) and new type (2020215-xx) cards the memory and peripherals map is completely different, only the new 2020215 has one (EE)PROM (e2prom) allocated from 0x0800 to 0x0FFF (X2816A 2Kbytes type). Old cards don't have any non-volatile configuration/calibration storage, only UV Erasable (E)PROM, 2516 or 2532 ancient types, the new card use three 27C128 UV (E)PROM with all option firmwares fitted. On old card the options are added by additional UV (E)PROMs in related empty sockets as firmware extensions, for Opt.02 (Power Meter) is installed on A107 and contain either calibration table AND the PM firmware, it's important that the firmware is the SAME revision letter as the base firmware on A105 old type. For this reason Simon sells the entire set of (E)PROM (base + PM extension with cal data), obviously that CAL data isn't optimized for all counters, but only for the original calibrated unit. Your EIP counter is a very early CCN#, this model (18GHz) was started with CCN:1800 in production and got new A105 card at CCN:1808, from CCN:1809 are all 575B models. |
| Guile:
--- Quote from: Ash on May 18, 2018, 01:06:45 pm --- --- Quote from: Guile on May 17, 2018, 07:43:28 pm --- Thanks for proposing your help Ash, but I've also developed similar script to dump my EEPROM. However if you can share with me your EEPROM content (from 0x0800 to 0x0FFF) I'll be very grateful!! Now I need to recalibrate my counter again but I'm still interested with activating the Power Meter. Let's try together if you agree :) Cheers --- End quote --- So, on my unit the entire range between 0x0800 and 0x0FFF is "blank" (0xFF). It doesn't appear to have any non-volatile ram, at least in that range. I guess my entire memory map is different that I have found in the available service manuals.. My EIP 575 has A105 (CPU) board part number 2020195 (-01 hand written) if that helps at all.. probably not.. Maybe HighPrecision can shed some light on the older '575 units? The model and serial numbers read: Mod: 575 CCN 1802 SER: 00671 Ash. --- End quote --- Hi Ash, Thanks to my blank EEPROM your results are really close to mine now ;D Thanks a lot for having tried! Thus if I understood correctly what HighPrecision said, it looks like that what you have to do is to buy some EEPROM, DAC, and diode and program them with the available files online. :-+ By the way I know now that my model is 545B CCN 2213 and I have option WB68 installed. Good luck for your modification ! |
| Ash:
--- Quote from: HighPrecision on May 18, 2018, 02:42:03 pm --- --- Quote from: Ash on May 18, 2018, 01:06:45 pm ---My EIP 575 has A105 (CPU) board part number 2020195 (-01 hand written) if that helps at all.. probably not.. Maybe HighPrecision can shed some light on the older '575 units? --- End quote --- Hi Ash, Between A105 old type (2020195-xx) and new type (2020215-xx) cards the memory and peripherals map is completely different, only the new 2020215 has one (EE)PROM (e2prom) allocated from 0x0800 to 0x0FFF (X2816A 2Kbytes type). Old cards don't have any non-volatile configuration/calibration storage, only UV Erasable (E)PROM, 2516 or 2532 ancient types, the new card use three 27C128 UV (E)PROM with all option firmwares fitted. On old card the options are added by additional UV (E)PROMs in related empty sockets as firmware extensions, for Opt.02 (Power Meter) is installed on A107 and contain either calibration table AND the PM firmware, it's important that the firmware is the SAME revision letter as the base firmware on A105 old type. For this reason Simon sells the entire set of (E)PROM (base + PM extension with cal data), obviously that CAL data isn't optimized for all counters, but only for the original calibrated unit. Your EIP counter is a very early CCN#, this model (18GHz) was started with CCN:1800 in production and got new A105 card at CCN:1808, from CCN:1809 are all 575B models. --- End quote --- HighPrecision, wow, thanks heaps for the details! I have the full set of "rev D" EPROM images, including the Option 2 EPROM that goes onto the A107 board. I actually verified that my A105 EPROMs all match this set byte-for-byte. So I'm pretty confident I can make the hardware changes and get the power meter option up and running. I've also got a handle on the calibration process, but that will have to wait until I have some free time and can get to a friend's place to use his power meter and signal generators.. and lug along a PC and EPROM programmer :) Do you know of any service documentation that better matches my model? --- Quote from: Guile on May 18, 2018, 07:51:02 pm ---Thanks to my blank EEPROM your results are really close to mine now ;D Thanks a lot for having tried! Thus if I understood correctly what HighPrecision said, it looks like that what you have to do is to buy some EEPROM, DAC, and diode and program them with the available files online. :-+ By the way I know now that my model is 545B CCN 2213 and I have option WB68 installed. Good luck for your modification ! --- End quote --- Thanks Guile, Hope you managed to find a way to fix yours as well! Cheers, Ash. |
| Guile:
--- Quote from: Ash on May 18, 2018, 01:06:45 pm ---Thanks Guile, Hope you managed to find a way to fix yours as well! Cheers, Ash. --- End quote --- Hi Ash, Thanks! Indeed, thanks to HighPrecision everything in my counter is back to normal and the Power meter is activated!! : 8) On the attached picture, I've set my Source output to -23dBm (the minimum it can do) through a 5dB attenuator, and I've read around -28dB with my Power meter, hence the calibration is a bit off but I'll try to fix that in the future. @HighPrecision: I owe you a beer!! If you're coming in Nice one day let me know I'll fulfill my promise then :) Cheers |
| HighPrecision:
--- Quote from: Ash on May 19, 2018, 08:09:28 am ---Do you know of any service documentation that better matches my model? --- End quote --- Hi Ash, best available match is the 545A manual for CCN:2205, all cards, except A103 and A104, are pratically the same part number suffix (revision), I've uploaded here: https://www.dropbox.com/s/hmu2vq9ew4fcaun/545A-548A_Manual_5580021-04_Apr83%20%28CCNs%202205%20and%202305%29_2nd%20Ed.pdf?dl=0 For A103 and A104 cards please refer to the available 57xB manual. |
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