dSCR (Digital satellite cable router) multiswitch SRM940
Vers. 1.01
1
Manual in .pdf
Product description
Cascadable single cable wideband multiswitch SRM940 is intended to distribute satellite and terrestrial signals for up to
32 satellite tuners or receivers on each outputs pair.
The multiswitch has 9 passive trunk lines: 8 for SAT IF and 1 for DTT.
The device ensures independent access for every subscriber to any SAT IF and DTT trunk line.
The multiswitch may be switched to Quattro SAT IF range input mode (for connecting 2 Quattro LNBs) by programmer
PC102W.
SRM940 is a cascadable single cable multiswitch with 2 pairs of subscribers outputs (4 outputs total) and an active DTT
path to subscriber output.
This multiswitch automatically detects Legacy/DiSEqC/SCR/dSCR commands from the receiver. The dSCR switches also
feature fully automatic level control for SAT IF, negating the need for any gain or level adjustments in most installations.
Multiswitch is built into a zinc alloy die-cast housing for extreme interference immunity. The housing of multiswitch meets
more stringent screening requirements according to EN50083-2, class A.
Control according to EN50494/EN50607 (SCR/dSCR) commands and compatible with Legacy STBs supporting DiSEqC
commands.
Safety instructions
Installation of the multiswitch must be done according IEC60728-11 and national safety standards.
The multiswitch is powered from the stabilized power 20 V. This voltage is not dangerous to life.
The external power supply must have a short circuit protection.
Any repairs must be made by skilled personnel.
To avoid damaging of the multiswitch do not connect the supply voltage until all cables have been connected correctly.
The device shall be mounted in a vertical position with RF input connectors on the top side on a wall or other nonflammable
surface.
The multiswitch
must be fixed with steel screws
Ø 4-5 mm. The screws are not included in the package.
Avoid placing the multiswitch next to central heating components or direct sunlight 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 powering.
The ventilation should not be impeded by covering the multiswitches with items, such as newspapers, tablecloths, curtains.
The mains socket of the external power supply must be easily accessible.
IMPORTANT WARNINGS!
Before connecting any products to a system, it is essential to make sure the
system power supply is switched off
. Avoid
short-circuit or overload of any power supply. Never “HOT-SWAP” any system components as this may result in damage to
the newly introduced or existing components.
The SRM940 multiswitch is intended only for indoor installation or installation in a suitable weatherproof outdoor cabinet. These
multiswitches must not come into contact with moisture or be installed in areas of high humidity or heat.
Always mount the multiswitch securely to a wall or bulkhead panel so it cannot hang or swing on its coaxial cables as this
may strain the internal circuit board and components.
Always connect all of the coaxial cables to the multiswitch before connecting the power. This unit is not designed to be
“HOT-SWAPPED” or connected to a live system.
Always be sure that connecting cables shield and multiswitch functional grounding clamp have common potential before
powering the system. Floating voltages can be created in an un-earthed system which may cause damage and can be
dangerous.
Momentary short-circuit of any cables may be enough to damage the sensitive electronics within the multiswitch or the
connected system.
Always allow plenty of ventilation around the multiswitch and do not allow it to be covered with materials such as loft insulation.
We recommend at least 5 cm of airspace around the multiswitch. Digital products can get hot to the touch and require a
flow of air to avoid overheating.
SRM940 multiswitch is designed to work with Ku band Wideband LNBs or Ku band Quattro LNBs (see chapter
„
Configuration
”).
LNBs and other system equipment connected to the multiswitch SAT trunks inputs/outputs can be powered from the same
power supply as the multiswitch (see chapter „
Installation
instructions
”).
To avoid damage not covered by warranty
DO NOT EXCEED MAX. CURRENTS
.
See „
Technical characteristics
” for max. current for external equipment.
Damage caused by current overload is not covered by the manufacturer’s warranty.
