ASTRO U-911 User manual

Version 12-2021A

Contents
Operating Manual U 911...U 946 - Version 12-2021APage 2
Contents
Before starting operation of the device..................................................................................... page 03
Symbols and conventions used................................................................................................ page 03
Proper use................................................................................................................................ page 04
Target group of this manual...................................................................................................... page 04
Device description.................................................................................................................... page 04
Important safety information..................................................................................................... page 05
Warranty conditions.................................................................................................................. page 07
Disposal.................................................................................................................................... page 07
Performance description........................................................................................................... page 08
Connecting modules..................................................................................................................page 09
Programming using the HE programming software....................................................................page 09
Signal indication.........................................................................................................................page 11
Troubleshooting........................................................................................................................ page 12
Maintenance and repair............................................................................................................ page 12
Servicing................................................................................................................................... page 12
Technical data.......................................................................................................................... page 13

Page 3
Before starting operation of the device
Operating Manual U 911...U 946- Version 12-2021A
Before starting operation of the device
HINWEIS: Read this operating manual attentively! It contains important information about
installation, ambient conditions and maintenance of the device. Keep this operating manual for
future use and for handover in the event of a change of owner or operator. A PDF version of this
manual is available to download on the ASTRO website (there may be a more recent version).
The ASTRO company confirms that the information in this manual was correct at the time of
printing, but it reserves the right to make changes, without prior notice, to the specifications, the
operation of the device and the operating manual.
Symbols and conventions used
Symbols used in these instructions
Pictograms are visual symbols with specific meanings. You will encounter the following pictograms in
this installation and operating manual:
Warning about situations in which electrical voltage and non-observance of the instructions in this
manual pose a risk of fatal injuries.
Warning about various dangers to health, the environment and material.
Recycling symbol: indicates components or packaging materials which can be recycled (cardboard,
inserts, plastic film and bags). Used batteries must be disposed of at approved recycling points.
Batteries must be completely discharged before being disposed of.
This symbol indicates components which must not be disposed of with household rubbish.

Proper use
Operating Manual U 911...U 946 - Version 12-2021APage 4
Proper use
The satellite splitters U 911...U 946 are used exclusively for distributing signals in SAT IF distribution
systems.
Modification of the devices or use for any other purpose is not permitted, and will immediately void any
guarantee provided by the manufacturer.
Target group of this manual
Installation and starting operation
The target group for installation and starting operation of the ASTRO headend technology are qualified
expertswhohavetrainingenablingthemtoperformtheworkrequiredinaccordancewithEN60728-11
and EN 62368-1. Unqualified persons are not allowed to install and start operation of the device.
Device configuration
Target group for the configuration of the ASTRO headend are persons who have received instructions
and have training enabling them to perform a configuration. Knowledge of EN 60728-11 and EN
62368-1 is not necessary for configuration.
Device description
The delivery is comprised of the following parts:
U 9xx SAT splitter
Operating manual
Front side
[1] Controller connection
[2] Signalling
[3] Remote power on/off switch
[4] Label field
[5] Test points
Rear side
[6] Outputs Y
[7] Outputs X
[8] Input Y
[9] Input X
[10] Bus connector sockets
[11] Mains power sockets
[12] Earth terminal
Figure 1: U 911 SAT splitter
The U 911...U 946 SAT splitters feature a CE marking. This confirms that the products comply with the
relevant EC directives and adhere to the requirements specified therein.
15
6
234
78910 11 12

Page 5
Important safety information
Operating Manual U 911...U 946- Version 12-2021A
Important safety information
To avoid any potential risks to the greatest extent possible, you must adhere to the following safety
information:
ACHTUNG: Failure to observe this safety information may result in personal injury due
to electrical and thermal dangers!
Proper use
Only use the device at the approved operating sites and in the ambient conditions allowed (as
described in the following), and only for the purpose described in the section “Proper use”.
Before starting operation of the device
HINWEIS: Read this operating manual attentively! It contains important information about
installation, ambient conditions and maintenance of the device. Keep this operating manual for
future use and for handover in the event of a change of owner or operator. A PDF version of this
manual is available to download on the ASTRO website (there may be a more recent version).
Check the packaging and the device for transport damage immediately. Do not start operation of
a device that has been damaged.
Transporting the device by the power cable may damage the mains cable or the strain relief, and
is therefore not permitted.
Installation and operation
The device may only be installed and operated by qualified persons (in accordance with EN
62368-1) or by persons who have been instructed by qualified persons. Maintenance work may
only be carried out by qualified service personnel.
An installation site must be provided that prevents children from playing with the device and its
connections.
In order to operate the U 100-230 unit (protection class I), it must be connected to mains sockets
with a protective earth conductor.
The electrical connection conditions must correspond to the specifications on the device type
plate.
To avoid damage due to overheating, the device may only be installed on horizontal surfaces. The
deviceis,wherepossible,intendedforoperationin metallically conductive 19” racks with sufficient
air convection to ensure that the maximum permissible ambient temperature for the device is
adhered to. The installation surface should be non-flammable.
The ambient temperatures specified in the technical data must be complied with, even when
climatic conditions change (e.g. due to sunlight). If the device overheats, the insulation used to
isolate the mains voltage may be damaged.
The device and its cable may only be operated away from radiant heat and other sources of heat.
To avoid trapped heat, ensure there is good ventilation on all sides (minimum interval of 20 cm to
other objects). Installing the device in a niche or covering the ventilation openings is not permitted.
No objects may be placed on the device.
The subscriber network must be earthed in accordance with EN 60728-11, and must remain
earthed even when the device is removed. Furthermore, the earth connection on the device can
be used. Devices within hand’s reach must be integrated into the potential equalisation together.
Operating the device without an earth conductor, without earthing the device or without using
device potential equalisation is not permitted.

Important safety information
Operating Manual U 911...U 946 - Version 12-2021APage 6
The device does not feature protection against water and may therefore only be operated and
connected in dry rooms. It must not be exposed to splash water or drip water, condensation or
similar effects of water, as this may impair the isolation from the mains voltage.
The electrical system supplying current to the device, e.g. a house installation, must incorporate
safety devices against excessive current, earth leakages and short-circuiting in accordance with
EN 60950-1.
All adhere to all applicable national safety regulations and standards.
Both mains plugs are used as a mains voltage disconnect unit in the event of servicing and in the
event of danger, and must therefore be accessible and be able to be operated at any time. The
device is operational as soon as one mains plug is connected to the mains voltage.
Do not install the unit in locations with excessive dust formation, as this may impair the isolation
from the mains voltage.
Excess mechanical loads (e.g. falling, impacts, vibrations) may damage the insulation used to
provide protection from mains voltage.
Highexcesscurrents(lightningstrike,surgesinthepowerutilitygrid)maydamageinsulationused
to provide protection from mains voltage.
If there is no information about intended use (e.g. operating site, ambient conditions), or the oper-
ating manual does not include the corresponding information, then you must consult the manufac-
turerofthisdevicetoensurethatthe device may be installed. If you do notreceiveanyinformation
on this from the manufacturer, do not start operating the device.
Disconnect devices with damaged power cables from the mains power (unplug the power supply
plug).
Electromagnetic compatibility (EMC)
In order to avoid malfunctions from occurring when operating radio and telecommunications equip-
ment, as well as other operating units or broadcasting services, the following points must be observed:
Before installation, the device must be checked for mechanical damage. Damaged or bent covers
or housings may not be used.
During operation, the device must always be covered by the components provided for this
purpose. Operation with an opened cover is not permitted.
The braided line or the contact springs may not be damaged or removed.
Maintenance
Theoperatingdisplay only showswhethertheDC current, whichsuppliesthedevicecomponents,
has been disconnected. However, operating displays (on the power supply unit or the device) that
are not lit up in no way indicate that the device is completely disconnected from the mains. There
may still be voltages in the device that are dangerous to touch. You may therefore not open the
device.
Read carefully: EN 60728-11 – Part 1, Safety requirements / No service tasks during electrical
storms!
Repair
Repairs may only be performed by the manufacturer. Improperly performed repairs may result in
considerable dangers for the user.
Do not start operating devices with a damaged power cable, and instead have them repaired by
the manufacturer.
If malfunctions occur, the device must be disconnected from the mains and authorised experts
must be consulted. The device may need to be sent to the manufacturer.

Page 7
Warranty conditions
Operating Manual U 911...U 946- Version 12-2021A
General information
Store or use the device in a safe location, well out of reach of small children. It may contain small
parts that can be swallowed or inhaled. Dispose of any small parts that are not needed.
Plastic bags may have been used for packaging the device. Keep these plastic bags away from
babies and children in order to avoid any danger of suffocation. Plastic bags are not toys.
Do not store the device near chemicals or in places in which any leakage of chemicals may occur.
Organicsolventsorfluidsinparticularmaycausethehousingand/orcables tomeltor disintegrate,
presenting a danger of fire or electric shock. They may also cause device malfunctions.
Do not connect the mains adapter provided to any other products.
Warranty conditions
The general terms and conditions of ASTRO Strobel GmbH apply. You will find these in the current
catalogue or on the Internet under “www.astro-kom.de”.
Disposal
All of our packaging material (cardboard boxes, inserts, plastic film and bags) is completely recyclable.
This device must be disposed of as electronic waste at designated collection facilities in accordance
with the current disposal regulations valid in your district/state/country once the device is no longer in
use.
ASTRO Strobel is a member of the Elektro system solution for the disposal of packaging materials. Our
contract number is 80395.

Performance description
Operating Manual U 911...U 946 - Version 12-2021APage 8
Performance description
The satellite splitters in the U 9xx series exhibit the following performance features:
Devices with a 75 ohm input impedance and 75 ohm output impedance:
U 911: 2 x 1 in 8 with 2 power supply units
U 912: 2 x 1 in 8 with 1 power supply unit
U 913: 2 x 1 in 8 without a power supply unit
U 914: 1 x 1 in 16 with 2 power supply units
U 915: 1 x 1 in 16 with 1 power supply unit
U 916: 1 x 1 in 16 without a power supply unit
Devices with a 50 ohm input impedance and 50 ohm output impedance:
U 921: 2 x 1 in 8 with 2 power supply units
U 922: 2 x 1 in 8 with 1 power supply unit
U 923: 2 x 1 in 8 without a power supply unit
U 924: 1 x 1 in 16 with 2 power supply units
U 925: 1 x 1 in 16 with 1 power supply unit
U 926: 1 x 1 in 16 without a power supply unit
Devices with a 50 ohm input impedance and 75 ohm output impedance:
U 931: 2 x 1 in 8 with 2 power supply units
U 932: 2 x 1 in 8 with 1 power supply unit
U 933: 2 x 1 in 8 without a power supply unit
U 934: 1 x 1 in 16 with 2 power supply units
U 935: 1 x 1 in 16 with 1 power supply unit
U 936: 1 x 1 in 16 without a power supply unit
Devices with a 75 ohm input impedance and 50 ohm output impedance:
U 941: 2 x 1 in 8 with 2 power supply units
U 942: 2 x 1 in 8 with 1 power supply unit
U 943: 2 x 1 in 8 without a power supply unit
U 944: 1 x 1 in 16 with 2 power supply units
U 945: 1 x 1 in 16 with 1 power supply unit
U 946: 1 x 1 in 16 without a power supply unit

Page 9
Connecting the module
Operating Manual U 911...U 946- Version 12-2021A
Connecting the module
Observe all instructions about installation and mains connection described in the section “Important!”.
Ensure that the mains voltage, signal sources etc. are properly connected to the device using the corre-
sponding connections. The local mains voltage must be the same as the supply voltage required to
operate the device (see section “Technical data”).
Programming using the HE programming software
Adding a satellite splitter to a project
You can add one, or several, SAT splitter(s) in the HE programming software under “Project
parameters” in the “Planning” menu (see figure 2).
Figure 2: Project data
Once you have entered the required number in the “Number of satellite splitters” drop-down menu, you
can access these using the menu item “SAT IF splitter” (see figure 3).
Figure 3: SAT IF splitter

Programming using the HE programming software
Operating Manual U 911...U 946 - Version 12-2021APage 10
Programming the satellite inputs
You can assign any of the satellites stored in the SAT database to the SAT inputs (see figure 4). This
is demonstrated in the following using the X input as an example.
Figure 4: SAT IF splitter, input assignment
Now select polarisation and band from the drop-down menu. The attenuation of the splitter can also be
set using the “SAT IF splitter” window. Select the required value from the drop-down menu here as well
(see figure 5). The values range from 0 and 16 dB in increments of 0.5 dB.
Figure 5: SAT IF splitter, setting the attenuator

Page 11
Signal indication
Operating Manual U 911...U 946- Version 12-2021A
Furthermore, you can, when required, activate a 7 dB slope equaliser and monitoring of the LNC re-
mote supply voltage (see figure 6). To do so, activate the respective checkbox. You can select a value
between100and700 mA from thedrop-downmenuforthe lower alarmthreshold;avalue between 200
and 800 mA can be selected for the higher alarm threshold (in increments of 50 mA respectively).
Figure 6: SAT IF splitter, equaliser and LNC remote power monitoring
The actual remote current is displayed after reading out the SAT splitter. Reading it out again allows
the value to be updated.
HINWEIS: The information on configuration described above for the X input also applies
for the Y input.
Signal indication
Flawless operation of a power supply unit is indicated by a green LED on the front side of the device.
The active LNC remote power supply is also indicated by a green LED.
If monitoring of the LNB remote power supply is activated, and the current value fails to remain within
the range entered previously, this is indicated by a red LED.

Troubleshooting
Operating Manual U 911...U 946 - Version 12-2021APage 12
Troubleshooting
If the device is not functioning correctly, please perform the following checks:
Check whether the device has been connected to the required mains voltage (230 V~, 50 Hz).
Check whether the signal cable is connected correctly, and that there are no breaks or short
circuits in the connectors.
If the problem cannot be resolved, please contact the ASTRO customer service.
Maintenance and repair
ACHTUNG: The following safety information must be observed when performing main-
tenance and repair work. Failure to observe this safety information may result in personal
injury due to electrical and thermal dangers!
Theoperatingdisplay only showswhethertheDC current, whichsuppliesthedevicecomponents,
has been disconnected from the mains voltage. If the operating display (for the power supply unit
or the device) does not light up, this does not mean that the device has been fully disconnected
from the mains voltage. There may still be voltages in the device that are dangerous to touch. You
may therefore not open the device.
Read carefully: EN 60728 - Part 1 Safety requirements: No service work during thunderstorms.
A defective device may only be repaired by the manufacturer to ensure that components with the
original specification are used (e.g. power cable, fuse). Improperly performed repairs may result
in considerable dangers for the user or installer. If malfunctions occur, the device must therefore
be disconnected from the mains and authorised experts must be consulted. The device may need
to be sent to the manufacturer.
Service tasks
Repairs may only be performed by the manufacturer. Improperly performed repairs may result in
considerable dangers for the user.
Do not start operating devices with a damaged power cable, and instead have them repaired by
the manufacturer.
If malfunctions occur, the device must be disconnected from the mains and authorised experts
must be consulted. The device may need to be sent to the manufacturer.
HINWEIS: The U 9xx satellite splitters may only be operated using original power supply
units!

Technical data
Page 13
Operating Manual U 911...U 946 - Version 12-2021A
Technical data
Common data
Inputs / Outputs 2 x 1 in 8 1 x 1 in 16
Num. of power suppl. 230 V / 28VA 2 1 2 1
Remote current [ma] 350 350 350 350
LNB voltage [V] 16 16 16 16
Input frequency range [MHz] 950 - 2150
Input level value [dBμV] 85
Through loss [dB] 0 ± 2
Isolation [dB] > 40
Level control (0,5 dB steps) [dB] 0…-15
Equalizer [dB] 0 / 7 ± 1
Frequency range insertion loss
in 36 MHz bandwidth
in nominal frequency range
[dBss]
[dBss] < 1 < 2
Return loss
Inputs / Outputs [dB] ≥ 12 / ≥ 14
Output isolation [dB] > 20
Testpoints (1 per polarization)
Value output isolation
Return loss
[dB]
[dB] 10 12
* maximum 1,5 A, depending on power supply and internal securing
Type U 911 U 912 U 914 U 915
Order number 380 192 380 212 380 214 380 215
EAN-Code 4026187… ...651435 ...002749 ...651909 002763
Connectors [Ω] In- and outputs: F-jacks, 75
Type U 921 U 922 U 924 U 925
Order number 380 221 380 222 380 224 380 225
EAN-Code 4026187… ...735180 ...002787 ...735173 002800
Connectors [Ω] In- and outputs: SMA-connectors, 50
Type U 931 U 932 U 934 U 935
Order number 380 231 380 232 380 234 380 235
EAN-Code 4026187… ...002824 ...002831 ...002855 ...002862
Connectors [Ω] Inputs: SMA-connectors, 50 & Outputs: F-jacks, 75
Type U 941 U 942 U 944 U 945
Order number 380 241 380 242 380 244 380 245
EAN- Code 4026187… ...002886 ...002893 ...002916 ...002923
Connectors [Ω] Inputs: F-jacks, 75 & Outputs: SMA-connectors, 50

Technical data
Operating Manual U 911...U 946 - Version 12-2021APage 14

Page 15
Technical data
Operating Manual U 911...U 946- Version 12-2021A

Operating Manual U 911...U 946 - Version 12-2021A 82 270 400 03EN
© 2021 ASTRO
Subject to change.
Change management and copyright:
This document contains information protected by copyright. It is prohibited to
photocopy, duplicate, translate or store on data storage media this document,
either partially or in full, without prior agreement of the ASTRO company.
These operating instructions have been written by:
ASTRO Strobel Kommunikationssysteme GmbH
Olefant 3, D-51427 Bergisch Gladbach (Bensberg) Germany
Phone: [phone], Fax: [phone]
eMail: [email protected]
Internet: www.astro-kom.de
All the information contained in this document has been checked in good faith.
The ASTRO company cannot be held liable for any damage or injury arising in
connection with the use of these operating instructions.