Multiswitches MR524, MR532
Vers. 1.05
1
EN RU
EN
OPERATING
Terrestrial TV input line has two four positions attenuator with 0, 4, 8, 12 dB and 0, 1, 2, 3 dB values. Total attenuation
value is the sum of attenuation values of each separate attenuator. For example: first attenuator set to 4 dB, second to
1 dB. Total attenuation will be 5 dB.
Access to SAT TV lines is controlled by 14/18 V and 0/22 kHz signals, which come from subscriber's receiver through
RF cable. SAT TV circuits of the multiswitch are powered from receivers and do not need any extra power supply.
Power supply unit of multiswitch is intended for supplying voltage for own terrestrial TV amplifier and for powering LNB:
18 V through H,Lo, H,Hi inputs;
14 V through V,Lo, V,Hi inputs;
12 V through Terr. TV input for preamplifiers. This voltage can be turned off by a switch, in the case if preamplifier is
not used.
To improve the isolation put 75
Ω
terminations with DC blocking on idle connectors.
PRODUCT DESCRIPTION
Multiswitches are designed for use in small and medium size SAT and terrestrial TV distribution systems. The multiswitches
ensure an independent access of every subscriber to any SAT IF or terrestrial line.
The housing of multiswitches meets more stringent screening requirements according to EN50083-2, class A.
The multiswitches are intended for indoor use only.
SAFETY INSTRUCTIONS
Installation of the multiswitches must be done according
IEC60728-11
and national safety standards.
The multiswitch is powered from mains 230 V~. This voltage is dangerous to life.
Any repairs must be done by a skilled personnel.
The multiswitch is double isolated from the mains 230 V~.
Do not remove the cover of the power supply section, without disconnecting the unit from the mains supply.
Do not plug the multiswitch into the mains supply if the power cord or plug is damaged.
Do not plug the multiswitch into the mains supply until all cables have been connected correctly.
The mains socket must be easily accessible.
The multiswitch shall not be exposed to dripping or splashing water.
Avoid placing multiswitch next to central heating components, near highly combustible materials and in areas of high
humidity.
If the multiswitch has been kept in cold conditions for a long time, keep it in a warm room no less than 2 hours before
plugging into the mains.
Do not insert any objects into ventilation openings.
The ventilation should not be impeded by covering the multiswitch with items, such as newspapers, table-cloths, curtains.
Mount the multiswitch on not flammable wall or in not flammable installation box in vertical position with power supply unit
on the right side. Mount in locations where children not likely to be present.
From top, front and bottom of installed multiswitch must be at least 10 cm free space.
WARNING!
Before connecting cables to multiswitch, be sure that cables shield and multiswitch functional grounding
clamp have common potential. Otherwise, floating voltage can damage product. Shields of cables must be connected to
main potential equalization bus.
MONTAGE VIEW
Mount the multiswitch on the vertical position with power supply unit on the right side. The multiswitch
must be fixed with
steel screws
Ø 4-5 mm
. The screws are not included in a package.
up position
down position
Terr
.TV
V,Hi
V,Lo
H,Hi
H,Lo
OK
DC 18V H,Lo/H,Hi
230V
5
0/60Hz 17W
0 4 8 12
Att. dB
Att. dB
0 1 2 3
Rec.2/4
Rec.6/8
Rec.10/12
Rec.14/16
Rec.18/20
Rec.22/24
Rec.1/3
Rec.5/7
Rec.9/11
Rec.13/15
Rec.17/19
Rec.21/23
DC 12V Terr.TV
On
Off
14V
14V
18V
18V
+
Multiswitch MR524
DC output current 18V+14V+12V 650 mAmax
12V 100 mAmax
Outputs Max gain Terr. / SAT TV
9-16 1 / 3 dB
1-8 3 / 5 dB
17-24 0 / 1 dB
Terr.TV attenuator switch
Switch for supply 12V
through Terr.TV input
Outputs
Functional grounding clamp
DC voltage indicator
Outputs
Terr.TV input
12V output
HHi input
18 V output
VHi input
14 V output
HLo input
18 V output
VLo input
14 V output
Mounting
supports
Mounting
supports
Mounting
supports
Mounting
supports
