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J. Forster
Hi Susan,
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HP only put timers in instruments that had things that were 'used up', like Cs beam standards, sweepers with BWO tubes, and so on. They used little Curtis (?) ETMs, composed of a capilliary filled w/ mercury and a drop of electrolyte. The position of the Hg gap was proportional to the A-H through the device. In newer stuff, there may be an ETM built into the software, but I don't know. FWIW, -John ============ Dear All, |
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laurens_db
I don't know about the OP's question, but the 856xE series definately had an elapsed hours count, possibly as the CRT has a finite life...
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--- In hp_agilent_equipment@..., "J. Forster" <jfor@...> wrote:
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Maybe some do, but I know the current PNA series of Network Analyzers do not....unless you count the hard drives. HDDs do keep track of the number of hours they are turned on; as well as number of power cycles. So I guess, you could say that most modern instruments do keep track. Of course, if you replace the HDD, that data is lost.
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I assume SSDs also keep track of the same info. --- In hp_agilent_equipment@..., "Susan" <susan@...> wrote:
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Susan Parker