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Table 2-3. Switch SW3 Settings
Camera
Monitor
Switch Positions
(1=ON, 0=Off, X=Don't care)
8
7
6
5
4
3
2
1
1-256
1-16
× × 0 0 × 0
0
×
257-512 1-16
× × 1 0 × 0
0
×
513-768 1-16
× × 0 1 × 0
0
×
769-1024 1-16
× × 1 1 × 0
0
×
1-256
17-32 × × 0 0 × 1
0
×
257-512 17-32 × × 1 0 × 1
0
×
513-768 17-32 × × 0 1 × 1
0
×
769-1024 17-32 × × 1 1 × 1
0
×
1-256
33-48 × × 0 0 × 0
1
×
257-512 33-48 × × 1 0 × 0
1
×
513-768 33-48 × × 0 1 × 0
1
×
769-1024 33-48 × × 1 1 × 0
1
×
1-256
49-64 × × 0 0 × 1
1
×
257-512 49-64 × × 1 0 × 1
1
×
513-768 49-64 × × 0 1 × 1
1
×
769-1024 49-64 × × 1 1 × 1
1
×
2.2.2 Switches of Data Buffer Module with Video Loss
Detection
Apart from the two functions of common Data Buffer Module, the
Data Buffer Module with Video Loss Detection highlights the
capability of detecting video loss for each camera.
The module has three 8-position DIP switches, respectively labeled
as "SW1", "SW2" and "SW3", to set up parameters for these
functions.
18
SW1
ON
18
SW3
ON
18
SW2
ON
S6
Figure 2-10. Switches of Data Buffer Module with Video Loss
Detection
z
Switch SW1 sets the switching bay type, the ON/OFF status of
filtering (the same as a common Data Buffer Module), the baud
rate for the RJ-45 port, and the Alarm Contact mode
(factory-reserved for indicating Video/Sync Loss Detection).
Note:
Position 7 of SW1 should be set to ON to enable the
module to perform video loss detection.
z
Switch SW2 defines the communication type of the RJ-45 port,
and enables/disables the module's front panel LED.
z
Switch SW3 sets the camera and monitor group numbers
associated with particular switching bays. The specified
information is filtered only for these bays. Note: The setup of
switch SW3 is different for different type of switching bay.
In addition, a 3-position jumper labeled as "
S6
" (see
Figure 2-11
) is
also provided to enable/disable the on-board saving capability. If
enabled, the parameters concerning the video loss detection,
defined via menu programming, will be stored in the on-board
memory of the DBVL.
Table 2-4. Switch SW1 Settings
Function
Switch Positions
(1=ON, 0=Off, X=Don't care)
8
7
6
5
4
3
2
1
Normal switching bay
×
×
0
×
×
×
×
×
Dense switching bay
×
×
1
×
×
×
×
×
Video loss detection
enabled.
×
1
×
×
×
×
×
×
Video loss detection
disabled.
×
0
×
×
×
×
×
×
All information passed.
1
×
×
×
×
×
×
×
Only specific
information passed.
0
×
×
×
×
×
×
×
1200 baud rate
×
×
×
×
×
×
0
0
2400 baud rate
×
×
×
×
×
×
0
1
4800 baud rate
×
×
×
×
×
×
1
0
9600 baud rate
×
×
×
×
×
×
1
1
Table 2-5. Switch SW2 Settings
Function
Switch Positions (1=ON, 0=Off)
8
7
6
5
4
3
2
1
RS-232
× 0 0 0 0 0 1 1
Front
panel
LED
ON 1 × × × × × × ×
Front
panel
LED
OFF 0 × × × × × × ×
Table 2-6. Switch SW3 Settings
For Dense Switching Bay:
Camera
Monitor
Switch Positions
(1=ON, 0=OFF, X=Don't care)
1
2
3
4
5
6
7
8
1~256
1~32
× 0 × × 0
0
×
×
257~512
1~32
× 0 × × 0
1
×
×
513~768
1~32
× 0 × × 1
0
×
×
76~1024
1~32
× 0 × × 1
1
×
×
1~256
33~64
× 1 × × 0
0
×
×
257~512
33~64
× 1 × × 0
1
×
×
513~768
33~64
× 1 × × 1
0
×
×
769~1024 33~64
× 1 × × 1
1
×
×