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HP 53131A vs 53132A hardware differences

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SMB784:
Well now I'm gonna have to look into this again!  Thanks for all your great work everyone

daddioo:
Hello everyone, about a month ago I changed my two HP 53131A to 53132A, I followed all the comments on the site and downloaded the file for the components to add and replace, I did the job accurately with hot air welding, I replaced the eprom with the 4613 firmware, both frequency meters work fine SELFTST: PASS, GPIB AT 3, there is only one problem when I turn on this message UNCALIBRATED appears, I don't know what to do. |O
I wonder if there is anyone who can help me.
sorry for english, i'm using google translate
Thank you

HighVoltage:
Did you try to calibrate the instrument with an external 10 MHz signal?
After a successful calibration with adjustment it should work and the message should stay away.

daddioo:
yes I did this calibration with 10Mhz from the gpsdo, but it is used to calibrate option 11 10Mhz high stability, nothing to do it always appears uncalibrated.

eliocor:
http://ftb.ko4bb.com/manuals/146.241.179.38/HP_53131A_53132A_53181A_Universal_Counter_Assembly_Level_Service_Guide.pdf
http://file.yizimg.com/327204/201684-115911255.pdf

see chapter 2
Leggiti il capitolo 2 per la calibrazione dello strumento

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