![Farfisa AD2121CAG series Скачать руководство пользователя страница 164](http://html1.mh-extra.com/html/farfisa/ad2121cag-series/ad2121cag-series_technical-manual_544905164.webp)
5.
12
(MT13 - En 2015)
J4 = 1-2
J3
J2
3
3
3
2
2
2
1
1
1
PRS210
230V
127V
0
A
DV...
DV...
DV2420
2223C
J1
5 4 3 2 1
D
F
F
LM
LM
2221S
2221ML
LP
LP
127V÷230VAC
J1=3-4
J1=4-5
J1=1-2
5
5
5
4
4
4
3
3
3
2
2
2
1
1
1
LD LD
LO LO
LO LO
LI LI
LI LI
LO LO
DV...
DV...
DV2420
2223C
J1
5 4 3 2 1
D
F
F
LM
LM
2221S
2221ML
LP
LP
127V÷230VAC
J4 = 2-3
J3
J2
3
3
3
2
2
2
1
1
1
J1=3-4
J1=4-5
J1=1-2
5
5
5
4
4
4
3
3
3
2
2
2
1
1
1
LD LD
LO LO
LO LO
LI LI
LI LI
LO LO
General notes.
- By increasing the distance of sections B and/or F, the distance of
section C in the amplified section will automatically increase.
- If the video amplifier and one or more exchanger are installed in a
switchboard, the said articles can be powered with the same power
supply PRS210 (max. 5 articles).
- For the correct operation of the installation, select the closing
impedance of the amplifier 2223C by positioning the jumper J1
correctly (see table 5.7).
Amplification of section F
Connection of video amplifier to increase the riser length
If the length of section F (distance from line power supply and
farthest videointercom) or section C (distance between external door
station and last videointercom) is higher than 150 meters in colour
installations, the riser line must be interrupted by adding the necessary
systems according to the information contained in the 2 application
diagrams below. These diagrams can be inserted in all basic
videointercom diagrams.
a) - Application diagram of amplifier art. 2223C directly powered
from DUO line
The following articles must be added to the basic diagram as illustrated
in the diagram below:
- video amplifier art. 2223C
and to restore the line power supply
- line distributor DV2420
- line power supply art. 2221S or art.2221ML
b) -
Application diagram of amplifier art. 2223C powered from
additional transformer
The following articles must be added to the basic diagram as illustrated
in the diagram below:
- video amplifier art. 2223C
- transformer PRS210
and to restore the line power supply
- line distributor DV2420
- line power supply art. 2221S or art.2221ML
Position and description of the jumpers of the items on pages
5.12 and 5.13
Articles
Jumpers
Description
DV2420
J1
2-3
open line
1-2
termination 47
Ω
J1
3-4
termination 70
Ω
2223C
4-5
termination 100
Ω
J2 J3 J4
1-2
external power supply 12Vac
2-3
line power supply
Note. Jumpers J2, J3 and J4 are provided on the video amplifier
art.2223C and must be all positioned to short circuit terminals 1 and 2.
Note. Jumpers J2, J3 and J4 are
provided on the video amplifier
art.2223C and must be all
positioned to short circuit terminals
2 and 3.
INSTALLATION NOTES
1
Table 5.7
V
I
D
E
O
I
N
T
E
R
C
O
M
S