That's what you'd think but it isn't the
case. 9825s in paricular are
nearly indestrucable but I have constant problems with all of the 9845s.
In 1979 I did a data-logging project at the Hanford Nuclear Reservation in
central Washington. We had 6 or 7 trailers that collected ground water
measurement on HP 9825s (using the built in tape drive.) The measurement
equipment was connected via HP-IB.
The power was from a mobile generator. Every time the air conditioner
started the line voltage would dip about 25 volts.
This test ran for over a year with out a single failure. I was impressed.
In the spring of 1980 the place was thick with grasshoppers. They would get
into the equipment it you let them. After Mount St. Helens dumped a foot of
ash on the place there wasn't a grasshopper to be found.
Michael Holley
www.swtpc.com/mholley