2
1
– Terrestrial TV trunk input
2
– H, Hi trunk input
3
– V, Hi trunk input
4
– H, Lo trunk input
5
– V, Lo trunk input
6
– Terrestrial TV trunk output
7
– H, Hi trunk output
8
– V, Hi trunk output
9
– H, Lo trunk output
10
– V, Lo trunk output
All sockets are “F” type.
Figure 1. External view of the multiswitches
External view
11
– Legacy/dSCR output2 (SRM543 pair A) (Legacy/UB+Terr.TV)
12
– Legacy/dSCR output1 (SRM543 pair A) (Legacy/UB+Terr.TV)
13
– Legacy/dSCR output2 (SRM543 pair B) (Legacy/UB+Terr.TV)
14
– Legacy/dSCR output1 (SRM543 pair B) (Legacy/UB+Terr.TV)
15
– DC 20V power input
16
– Power ON indication LED
17
– DC power to H trunk lines switch
18
– Ground clamp
Installation instructions
Read the safety instruction first.
Fit multiswich on mounting place and connect it (pay attention to the multiswitch inputs and Quattro LNB outputs marking), connect
the isolated 75 Ω loads to the unused RF output F sockets, power on multiswich using one of 4 powering modes (see Table 1).
Table 1
Powering mode
”DC power
to H trunk lines
switch” position
(see Figure 1, pos.21)
Warnings and notes
1. Multiswich powered from local PSU (20 V)
via DC input
(see Figure 1, pos. 15) . (Recommended for use is
PS202F 20 V PSU).
H trunk lines are DC isolated from it.
OFF
Recommended as first choice.
WARNING: BEFORE CONNECTION
ALWAYS CHECK DC POWER TO H TRUNK
LINES SWITCH
(see Figure 1, pos.17).
IT
MUST BE IN POSITION "OFF"!
Note
: All trunk lines preserve DC bypassing.
2.Multiswich is powered from local PSU (20 V)
via DC input and with DC passing to H trunk
lines.
In this mode H trunk lines can power in cascade
other multiswiches (without PSU, with “DC to H
trunk lines” switch ON)
ON
WARNING
: Don’t overload PSU via H trunk
lines – check total system power consumption
of multiswich and from H trunk lines (including
all other equipment connected).
Check all other system equipment connected
to H lines if it
can accept 20 V. SERIOUS
DAMAGE OF IT CAN OCCUR!
1
2
4
5
3
17
16
6
7
9
10
8
15
11
12
18
On
Off
DC IN 20V
Terr.
TV
Frequency SAT TV
range Terr. TV
Trunk loss SAT TV
Terr. TV
Current consumption 2 0 V 510mA max
950-2150 MHz
47-862 MHz
< 3 dB
< 1 dB
dSCR multiswitch SRM543
H,Lo
H,Hi
V,Hi
Terr.
H,Lo
H,Hi
V,Lo
V,Hi
V,Lo
DC IN
20V 2A
dSCR / Legacy
+Terr.TV
DC IN
2
1
Pair A
Pair B
2
1
TV
DC to H lines
Power ON
13
14
1
2
4
5
3
17
On
Off
DC IN 20V
Frequency SAT TV
range Terr. TV
Trunk loss SAT TV
Terr. TV
Current consumption 2 0 V 270mA max
950-2150 MHz
47-790 MHz
< 3 dB
< 1 dB
dSCR multiswitch SRM523
H,Lo
H,Hi
V,Hi
Terr.
H,Lo
H,Hi
V,Lo
V,Hi
V,Lo
DC IN
20V 2A
dSCR / Legacy
+Terr.TV
DC IN
2
1
TV
Terr.
TV
DC to H lines
Power ON
16
6
7
9
10
8
15
11
12
18
SRM523
SRM543
