2-5
Digital XPoint Matrix Switchers • Installation
External sync connection
When switching between inputs, the resulting image change should be seamless, or
clean. The Digital XPoint Switchers can use an external signal to synchronize
switching during the vertical sync interval. Without the external sync locking
feature, switching between inputs can result in a brief rolling (sync loss) or a brief
change in the picture size.
5
External Reference In (top) connector —
Connect an external sync signal to
this BNC connection for genlocking the video signal in broadcast or other
sync-critical applications.
External Reference Out (bottom) connector
— Connect any downstream
equipment that requires genlocking to this BNC connector to route the
external sync signal throughout the system in broadcast or other sync-critical
applications.
Figure 2-5 shows a basic external sync configuration. The External Reference In
connector receives a timing signal. The External Reference Out connector allows
the signal to be passed on to another video device, if required.
Rear Panel
To Next Device
or Terminate
POWER
12V
.2A MAX
L
R
4
3
2
1
6
5
PA
L
NTSC
BLA
CKB
U
RST
BLACKBURST
COLORBARS
-10
+4
1 2 3
ON
1 KHZ
AUDIO
BBG 6 A
BLACKBURST AND AUDIO
GENERATOR
Extron
BBG 6 A
Blackburst/
Audio Generator
8
EXT. REF.
IN
RS232/422
OUT
IN
Figure 2-5 —Simple external sync connection example
Figure 2-6 shows a configuration in which the timing signal passes through three
video cameras before connecting to the switcher. This type of video camera is
capable of synchronizing with the external timing source for video editing
applications.
If no external sync timing source is connected to the switcher, switching occurs
immediately rather than during the next vertical sync interval.
.3A
M
AX
10
0-2
40
V
50
-60
Hz
IN
PU
TS
1
IN
OU
T
2
IN
OU
T
3
IN
OU
T
4
IN
OU
T
5
IN
OU
T
6
IN
OU
T
7
IN
OU
T
8
IN
OU
T
OU
TP
UT
S
1
2
3
4
5
6
7
8
EX
T.
RE
F.
IN
RS
23
2/4
22
OU
T
PO
W
ER
12
V
.2A
M
AX
L
R
4
3
2
1
6
5
PA
L
NTSC
BLA
C
KB
URST
BL
AC
KB
UR
ST
CO
LO
RB
AR
S
-10
+4
1
2
3
ON
1 K
HZ
AU
DIO
BB
G
6 A
BL
AC
KB
UR
ST
A
ND
AU
DI
O
GE
NE
RA
TO
R
Extron
BBG 6 A
Blackburst/
Audio Generator
Video Camera
Video Camera
Video Camera
Monitor
Monitor
VCR
DXP 88 SDI
SDI-AVR 100
SOG
RGB/YUV
SET UP
BET
A
COLOR B
A
RS
NTSC/P
AL
10
0-2
40
V
5
0/6
0 H
z
0.2
A
SD
I IN
PU
T
OU
TP
UT
S
IN
OU
T
CO
MP
OS
ITE
OU
TP
UT
S-
VI
DE
O
OU
TP
UT
R/
R-
Y
G/
Y
B/
B-
Y
H
V
S
ON
OF
F
VCR
Figure 2-6 — Multiple device external sync connection example
im Vertrieb von
CAMBOARD Electronics
www.camboard.de
Tel. 07131 911201
Fax 07131 911203
