Multiswitches MR908L, MR912L, MR916L
Vers. 1.06
1
EN PL
EN
PRODUCT DESCRIPTION
This series of multiswitches has 8 satellite TV IF inputs, two terrestrial TV inputs (active and passive) and up to 16 subscriber's
outputs. They ensure an independent access of every subscriber to any SAT IF or terrestrial input.
Multiswitches are designed for use in large and medium SAT and terrestrial TV distribution systems.
Active terrestrial TV inp
ut has LTE signal suppression filter
.
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 in vertical position with RF input connectors on the left side. The multiswitch
must be fixed with steel
screws Ø 4-5 mm. The screws are not included in a package.
Check position of switch "Active Terr. DC 12V" to prevent shortcut of power supply, it must be "off" when preamplifier is absent.
OPERATING
SAT IF signals must be connected as shown on the label of multiswitch to ensure correct access to SAT TV signals. It is
important to equalize average signal level from satellites. Use gain controls for each satellite line to achieve this goal.
The purpose of the control near the terrestrial TV input is to adjust optimal level of terrestrial TV signal. Maximal level must
not exceed the upper limit (see specifications), at the same time it must not be too low to avoid interference from SAT TV lines.
The subscriber's access to terrestrial TV line is permanent. Subscriber access to SAT TV lines is controlled by either analogue
control signals or DiSEqC signals, which comes from the receiver through RF cable.
up position
down position
Terr.TV
attenuator switch
Terr.TV input
VHi input
HHi input
18 V output
HLo input
18 V output
VLo input
DC voltage
indicator
Four positions SAT B IF attenuator switch.
Separate attenuator switch for each SAT IF input
Functional
grounding clamp
Four positions SAT A IF attenuator switch.
Separate attenuator switch for each SAT IF input
SAT B
SAT A
SAT B
SAT A
SAT B
SAT A
SAT B
SAT A
A
B
A
B
A
B
A
B
Active Terr. DC 12V
Terr
.
Active
Passive
Off
On
OK
SAT A
Att. dB
Att. dB
DC 18V H,Lo/H,Hi
0 4 8 12
0 4 8 12
0 4 8 12
0 4 8 12
Att. dB
Att. dB
Att. dB
0 4 8 12
0 4 8 12
0 4 8 12
0 4 8 12
Att. dB
Att. dB
Att. dB
Att. dB
Att. dB
SAT B
0 4 8 12
0 1 2 3
V,Hi
V,Lo
H,Hi
H,Lo
+
Switch for supply 12V
through Terr.TV input
230V 50/60Hz 25W
Multiswitch MR916L
Multiswitch MR916L
Frequency range SAT TV
950-2400 MHz
47-790 MHz
Maximum output level SAT
93 dBµV
Terr. TV
Maximum output level TERR (Rec.1-
8
)
DC output current 18V+14V+12V
88 dBµV
1 A
max
14V+12V
0.5 A
max
12V
0.1 A
max
Rec.1/3
Rec.9/11
Rec.5/7
Rec.13/15
Rec.2/4
Rec.6/8
Rec.10/12
Rec.14/16
A
B
A
B
A
B
A
B
Outputs
Outputs
passive
active
Mounting
supports
Mounting
supports
B
Mounting
supports
Mounting
supports
