GROUP S.P.A.
MT SBC 01
54
This accessory in the Simplebus range allows modulation and
transmission of the video signal from 3 colour cameras which can
be viewed cyclically on the monitor, together with the image from
the external unit.
Art. 1259C can be used in Simplebus2 and Simplebus Color
systems upstream of Art. 4888C.
Operation
With the monitor switched on, sequential switching of the TV
cameras can be activated from the video interphone by means of
function keys that depend on the type of system and the
programming of module 1259C using the 8-way microswitch (S1) as
described below. Sequential switching can also be activated using a
clean contact (C.NO.) connected to the INA – GND input as per
diagram SB2V/017GC on page 107.
Sequential switching of the cameras is also possible in audio mode.
Each time the actuator pushbutton on the monitor or the manual
contact is pressed, a camera is activated in sequence as shown in
Figure 1:
(hypothesis of 3 cameras connected).
Figure 1:
Sequential switching of cameras
Programming the number of cameras connected
The module has 3 coax video inputs to which the cameras must be
connected, occupying the terminals in the first free position starting
from the bottom. Select the number of cameras connected by
means of switches 7 and 8 of selector S1 as shown in Table 1.
Table 1
: programming the numer of cameras
1. Generic actuator mode
N.B. Before programming the module, see Table 3:
Compatibility of 1259C.
Use the Generic Actuator function on a pushbutton of the BRAVO
video interphone to control module 1259C.
On Art. 5714C, the Generic Actuator control is factory set for use on
pushbuttons 3, 4 and 5 of video interphones equipped with
Art. 5733 (optional pushbuttons module) or by setting one of the
External
unit
1
st
Camera
2
nd
Camera
3
rd
Camera
DIP 7
DIP 8
0 Cameras
DIP-SWITCH
1 Camera
2 Cameras
3 cameras
0
1
0
1
0
1
2
3
4
5
6
7
8
0
1
1
DIP-SWITCH
1
2
3
4
5
6
7
8
DIP-SWITCH
1
2
3
4
5
6
7
8
DIP-SWITCH
1
2
3
4
5
6
7
8
1.
Terminal block MR2 for system connection:
V1 S1
Coax input camera 1
V2 S2
Coax input camera 2
V3 S3
Coax input camera 3
IN A
Camera module external control contact
GND
Common contact
2.
Terminal block MR1 for system connection
L OUT L OUT
Bus line output
L IN L IN
Bus line input
~- ~+
12Vac 20Vdc power supply input
3. TRIMMER P1
Controls frequency of video signal modulation
(factory set to optimum setting: do not adjust)
4. TRIMMER P2
Control amplitude of modulated video signal
(factory-set to optimum setting: do not adjust)
5.
Programming microswitches S1
3
4
1
5
2
Simplebus remote camera switcher Art. 1259C
