EEVblog Electronics Community Forum
Electronics => Repair => Topic started by: bingo600 on February 01, 2017, 02:23:39 pm
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Well i guess it's my time.
I just got a Ram Test 1 Low , when powering up my 58' , it's been off for 3..4 months.
A power off/on cleared the error , but i suppose the battery has gone low/weak on one of my Dallas ram's.
I just got the 2 data FRAMS from this thead , and i'm waiting for the cal FRAM (I have a backup of the calram via gpib)
https://xdevs.com/fix/hp3458a_u4/ (https://xdevs.com/fix/hp3458a_u4/)
https://www.eevblog.com/forum/metrology/yes-another-3458a-repair-and-nvram-replacement-to-ramtron-fram/?all (https://www.eevblog.com/forum/metrology/yes-another-3458a-repair-and-nvram-replacement-to-ramtron-fram/?all)
The Ram Test 1 id cured by replacing the data RAMS with FRAMs correct ?
No mods are needed on the SOIC adapters on the data FRAMs correct ?
I'll start looking if i have 2 x SOIC-28 to dip for the data FRAMS , and another to mod for the CAL-Fram.
I'll also check if i have 2 x 28-pin and a 24-pin machined socket in the drawer.
But for now all i loose is any customs settings correct ?
/Bingo
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it's been off for 3..4 months.
:o You are volt-nut criminal! I always feel bad when 3458 have no life-critical important resistor or LTZ-reference measurement ongoing for a day... :popcorn:
The Ram Test 1 id cured by replacing the data RAMS with FRAMs correct ?
True.
No mods are needed on the SOIC adapters on the data FRAMs correct ?
True.
But for now all i loose is any customs settings correct ?
Correct, hotkeys and settings stored in main RAM.
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it's been off for 3..4 months.
:o You are volt-nut criminal! I always feel bad when 3458 have no life-critical important resistor or LTZ-reference measurement ongoing for a day... :popcorn:
I usually use the 3457 for doing daily logging stuff , and just the 58' if i need to measure Geller or LTZ
/Bingo
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No mods are needed on the SOIC adapters on the data FRAMs correct ?
in all my tests the F-RAM replacement for DS1230 (I made no mods) worked without any problems, but I have only made quick tests and put back the Dallas Chips afterwards
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No mods are needed on the SOIC adapters on the data FRAMs correct ?
in all my tests the F-RAM replacement for DS1230 (I made no mods) worked without any problems, but I have only made quick tests and put back the Dallas Chips afterwards
Thanx quarks :-+
I think i'll wait for the CAL-FRAM before installing all 3
/Bingo