23
PlayTest
Select
“
VoiceFunc
”
‐
>
“
PlayTest
”
to
enter
Playing
test
interface,
and
these
audio
files
are
stored
in
the
REC
folder
directory;
a
user
can
select
an
audio
file
by
the
“UP
“
and
“Down”
buttons,
and
then
play
or
delete
such
a
file.
z
Brightness
The
menu
functions
as
setting
backlight
brightness,
Select
“
Settings
”
‐
>
“
Brightness
”
on
the
main
menu,
to
enter
the
menu.
Press
the
arrow
keys
to
increase
or
decrease
the
backlight
brightness;
press
the
Enter
key
to
save
the
current
backlight
brightness
level.
Press
the
Cancel
key
to
the
previous
menu.
z
Time
The
menu
functions
as
setting
time
and
date,
Select
“
Settings
”
‐
>
“
Time
”
on
the
main
menu,
to
enter
the
menu,
as
shown
as
below.
Date
Setting
Select
“
Time
”
‐
>
“
Date
”
to
enter
the
option,
and
then
move
the
cursor
by
operating
the
Down
button,
and
adjust
the
value
by
the
Up
button.
Press
the
Enter
key
to
confirm
after
setting
is
completed.
