Restore range selected by user automatically
As the GEN series system is designed to measure 24 hours a day, 7 days a
week, the automatic range switching has the negative side effect of reducing
the sensitivity of the amplifier. During the actual overload, the channel is unable
to measure the input signal. Therefore, there are no extra negative side effects.
If the overload disappears and the system runs unattended, the input range that
is selected automatically will not be the best measurement range. Therefore,
the amplifier "remembers" the range that the user originally selected and
restores this range as soon as regular thermal conditions are restored. A
temporary large overload will then only result in input sensitivity that is adjusted
temporarily.
The automatic range adaptation is started due to thermal conditions typically
as a result channel input overload. Therefore, the overload might still be
present. If this is the case the automatic range restore restarts, the thermal
increase and leads to re
-
trigger the automatic range adaption process and the
overload is handled exactly the same way as before.
If the overload is permanent, the system keeps on automatic ranging to reduce
the dissipated heat. The system then restores the range selected by the user,
causing overheating again and thereby restarting the automatic ranging
process again. This cycle will repeat forever until the overload condition
disappears.
GEN3t
278
I3995-3.1 en HBM: public
