Midland Radio SP-300 Manuel D’Utilisation

Page -7-

May 2001

The micro will allow more lock time for the VCO before the
out-of-lock beep indication.

Low Battery Indication will be changed so that it does not
inhibit RX and will allow one transmission after low cell is
indicated.  Low cell will not be indicated during transmit
mode.  If the battery goes below specified limits during the
TX mode, low cell will be indicated immediately after
releasing the PTT button.

After the low cell indication is issued, the transmitter can
only be used one time.  When the PTT is pushed again and
then released, the transmitter is locked out until the unit is
powered down and then powered back up.

The software is such  that if the radio is inadvertently put
into program mode it will not lose the contents of the
EEPROM memory.  Data will only move in and out of the
memory when the programmer is attached.

An input to the microprocessor will be available that will
indicate to the microprocessor that the external option has
been selected.  This input should be connected to the exter-
nal option connector.  External option should be selected for
each channel.  If a channel is selected during programming
for external option, this input should be active when the
channel is selected during operation of the unit.