-22-
Click the “
Re
f
r
esh” bu�on a
t the under right c
orne
r
, then the files
in the USB
ext
ernal
st
o
r
a
ge device c
an be
retriev
ed, ope
r
at
e the
c
o
ntr
ols on the
t
oolbar unde
rside the inter
face,
y
ou
c
an do a series
of ope
r
a�ons
t
o the selec
t
ed files
t
o play/pause.
st
op.fa
st pl
a
y
.audio
adju
s
tme
n
t. Othe
r
wise,click the “Del
et
e” bu�on a
t the under right
c
orner
c
an del
ete the select
ed files.
The c
ame
r
a of
PTZ c
ould be
c
o
ntr
olled
t
o mo
ve t
o 8 di
r
ec�ons: up,
d
own,l
e
�,rig
h
t,upper l
e
�,upper rig
h
t,upper rig
h
t and lo
wer righ
t;
magnifi
c
a�on and
r
educ�on of the �mes;enla
rg
eme
n
t and nar
r
o
wing
of the fo
c
al len
g
th;the enla
rg
eme
n
t of the apertu
r
e and the nar
r
ow;
�lt speed s
e
�n
g
, lig
h
ts,wipe
r
s,fan and other func�ons.As the figu
re
sh
own belo
w:
1. Fi
rstly
,
r
o
t
at
e the c
ame
r
a
t
o the posi�on tha
t need se
t, and then
double click the
c
or
r
esponding No.
3.3.3.7 Pan & Tilt Control
PTZ
Preset P
osi�on
