Re: HP 8552A / 8554L Spectrum Analyzer help request
this is the long time without RUN.
Use it monthly, so it will be always fine.
When the day has come it blow the both Fuses at back of the IF, there is on the (not shure..) second card from backside, 2 gas stabis on the board, they become tired, then it blow the both fuses als following of the crowbar protection.
It is near to impossible to find 103 Volt Gas Stabis, so I used 2 pcs ZZ1000, each in series with a BZY 22 Volts Zener Diode. This combination delivers exactly the 103V and the temperature walking is near zero. A 100v zener without Stabi ist nightmare, here not possible.
The S is more cute then the T. And yes, it is a storage, with a round screen
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