User's Guide

Power on
To power on, press and hold (2 seconds) the Cancel/Home key.
Your radio attaches to the last selected talkgroup when it is powered off (if it is 'in service'). This is
customisable.
Depending on your radio's customisation any of the following may display:
the percentage of charge remaining, if a Sepura battery is fitted
a company logo
a splash screen
a welcome screen
a PIN entry screen
NOTE: A message may be displayed relating to the authenticity of your battery or
attached accessory. A message may appear if your software licence has or is about
to expire.
If your radio supports Radio User Assignment (RUA), which authenticates your radio on the
network, you may be prompted to log on to your network. See Authentication on page76.
Transmitting in 3W RF is only available when using a Sepura 3W battery. During power on the radio
checks the authenticity of the battery and whether it has the capacity for the radio to transmit 3W RF.
A message displays and the power may be limited if the radio cannot transmit in 3W RF when
licensed to do so.
If an accessory is detected when the radio is powered on, and it is the same accessory that was
attached at power off, the radio will continue to operate using the selected accessory profile. See
Accessory profiles on page119.
Power off
Caution! Risk of damage to the radio. Do not power off the radio by removing the battery.
The radio must be powered off correctly to ensure that it performs a controlled 'powered
down'.
To power off, from the Home screen press and hold (4 seconds) the Cancel/Home key.
Scroll to the Shutdown option, then press the Select key to power off your radio. Before
powering down, alerts and messages may be sent.
If your radio is configured to provide an option to delete Callouts, navigate to Shutdown or Delete
Callouts then press the Select key.
18 SC21 Series hand-portable radio