MEGABRAS MD-5060x Manual De Uso página 25

7. Other functions
7.1. Filter
When insulation measures are carried out in transformers or in large
dimension machines, in presence of strong electromagnetic fields, it is
possible that the equipment reading is unstable, especially for resistance
values higher than 100 MΩ. In these cases it is convenient to press the
key. This function allows to reach the insulation resistance value in an
upward curve without significant oscillations.
7.2. Hold
The key allows to hold the last performed reading on the display, at
the moment this key was pressed, without interrupting the test. When this
key is pressed again, the equipment updates the resistance and time
values. The key led and the letter H on the display indicates that the
function was activated.
7.3. Internal memory
This equipment has an internal memory for up to 4000 measured values.
This memory is administrated by the instrument and works in a cyclic way,
this means, when the memory is full, the oldest values in the memory will
be replaced by the newest ones. To avoid lost of data, always download
the internal memory after finish the measurements.
26