aaaa    counter for neighbour PSW measurement attempts

        bbbb    counter for neighbour synchronization measurement attempts

        cccc      counter for neighbour BCCH measurement attempts

        dddd    counter for neighbour BCCH Ext measurement attempts

        Counter values are shown in hexadecimal form.

    On poweroff the values of the counter displays are stored onto the EEPROM,
    where they will be read during power on. To initialize the counters to
    zero, select display 60. Counters are automatically reset to zero when
    they exceed their maximum value.