Automatic Restore Of User Selected Range - HBM Genesis GEN5i User Manual

GEN5i
Figure 12.8: Automatic thermal overload response

Automatic restore of user selected range

As the GEN series system is designed to measure 24 hours a day 7 days a
week, the automatic ranges switching has the negative side effect of reduced
sensitivity of the amplifier. During the actual overload condition the channel will
not be able to measure the input signal anyhow, so no extra negative side
effects are introduced. If the overload condition disappears and the system is
running unattended, the automatic selected input range will not be the best
measurement range. Therefore the amplifier will remember the original
selected user range and restore this user selection as soon as regular thermal
conditions are restored. Temporary large overload conditions will then only
result in temporary adjusted input sensitivity.
It is expected that the thermal conditions might only be restored because of the
automatic range adaption of the input channel. So the actual overload condition
might not have disappeared yet. If this would be the case, the thermal increase
would re-trigger the automatic range adaption process and the overload is
handled exactly the same way as before.
256 I2679-4.0 en