SKM 2-00
OPERATION MANUAL
Twin Modulator Module
Safety regulations
Ausrufezeichen statt Hinweis
Contents
1 Safety regulations ....................................................................................................... 2
2 Common ...................................................................................................................... 3
2.1 Scope of delivery .......................................................................................................... 3
2.2 Description .................................................................................................................... 3
2.3 Display elements and connections ............................................................................... 4
3 Installation and connection ....................................................................................... 5
3.1 Installation and connection in a headend base unit ...................................................... 5
3.2 Single operation mode of SKM 2-00 ............................................................................. 6
4 Programming .............................................................................................................. 7
4.1 Deployment ...................................................................................................................8
4.1.1 Selecting wire (left or right) ........................................................................................... 8
4.1.2 Setting output channel .................................................................................................. 8
4.1.3 Setting TV standard ......................................................................................................8
4.1.4 Vernier adjustment of the output frequency .................................................................. 8
4.1.5 Setting output level .......................................................................................................8
4.1.6 Setting audio mode ....................................................................................................... 8
4.1.7 Finishing the programming ........................................................................................... 8
5 Technical specifications ............................................................................................ 9
1 Safety regulations
• Assembly, installation and service must be carried out by authorized and skilled electricians.
• Switch off facility operating voltage or pull out mains plug before starting assembly or service
work.
• Facility assembly:
In dust-free, dry environment, protected against humidity, vapors, splash water and moisture.
In a location protected against solar radiation. Not within close distance of heat sources. In
ambient temperature of <50°C.
• Ensure sufficient ventilation of the device. Do not cover the ventilation slots! - Avoid short
circuits!
• Damages arising from incorrect connection and/or improper operation are excluded from any
liability.
• Please observe all relevant standards, regulations and guidelines regarding installation and
operation of antenna facilities.
• Ground SAT earth stations using equipotential bonding rails according to EN 50083-1,
EN 60728-11:2010.
• Do not carry out any installation and service work during thunderstorms.
© AXING AG – state of the art: June 2012 – Reserving change in design and typePage 2
Note
Common
SKM 2-00
2 Common
2.1 Scope of delivery
• 1 × Twin modulation module SKM 2-00
• 1 × DC connection cable SKZ 4-00
• 1 × Operator’s manual
The remote control and power supply unit are not included in the scope of delivery of SKM 2-00.
They are available optionally or integrated in the basic unit of SKS x-xx.
2.2 Description
The SKM 2-00 can either be operated in a headend basic unit SKS x-xx or in stand alone mode. The twin
module is used to inject two standard audio and video signals of variable sound and image sources (e.g.
audio and video devices, test pattern generators, monitoring cameras etc.) via two channels in a cable
system.
Audio and video signals injected via cinch connectors of the twin modulator are modulated to an
adjustable carrier frequency.
Duct 1
Fig. 1 SKM 2-00 - front view
The SKM 2-00 has two independent ducts. The two modulators are adjacent channel suitable.
Duct 2
© AXING AG – Stand: 10.11.08 – technische Änderungen und Irrtümer vorbehalten
Seite 3
Common
SKM 2-00
2.3 Display elements and connections
02
3 42
9
2
8
1
10
56 7
Fig. 2 Display elements and connections
1 Programming selection switch (duct 1 – position left, duct 2 – position right).
After completed programming, the switch must be in center position!
2 Display channel number
3 Display point special channels
4 Display point modulator programming
5 RF output and DC input (for installation in basic unit)
6 DC input/output (only for single operation)
7 DC input/output (power supply for three more twin modules in stand-alone operation (max. 4 twin
modules))
8 Audio/video outputs (Cinch)
9 Infrared receiver
10 Grounding screw
© AXING AG – Stand: 10.11.08 – technische Änderungen und Irrtümer vorbehaltenSeite 4
Installation and connection
Ausrufezeichen statt Hinweis
3 Installation and connection
The SKM 2-00 can either be operated in a headend basic unit SKS x-xx or in stand alone mode.
3.1 Installation and connection in a headend base unit
If the SKM 2-00 should operate in a headend basic unit SKS x-xx, the twin module is plugged in the output
collection field 1 and fastened with screws. Each free slot may be used. The power supply of the module
is provided by the output collection field.
Before inserting or changing a module, pull the mains plug of the headends basic unit from the socket!
Ground the base plate in order to avoid dangerous overvoltages according to EN 50083-1, EN 6072811:2010 (attention: risk of fire/death)
For detailed information on the headend base unit, refer to whose operating instructions.
1
base plate without modules
base plate fully equipped
Fig. 3 Installation and connection a headend base unit
© AXING AG – state of the art: May 2012 – Reserving change in design and type
Page 5
Installation and connection
Ausrufezeichen statt Hinweis
3.2 Single operation mode of SKM 2-00
Before installing modules, the power supply must be switched off. Ground the module acc. to EN 50083-1,
EN 60728-11:2010 in order to avoid dangerous overvoltages (attention: risk of fire/death). Use the
grounding screw attached to the device (see ß in fig. 2 on page 4).
The modulation module has to be fastened to a wall or onto a flat surface. In single operation mode of the
SKM 2-00, the power supply is provided by the DC feeding socket (see 6 in fig. 2 on page 4). A separate
power supply unit SKZ 5-00 is required for it. More units are connected by means of the DC loop-through.
One DC connection cable SKZ 4-00 is included in the delivery of the SKP 2-00. Max. 4 pieces SKM 2-00
may be connected together in single operation mode.
Note
Mount the power supply unit left of the SKM 2-00 module for better ventilation.
Fig. 4 Assembly and connection of a single twin module
Audio and video sources are connected to the cinch connectors at the front (see 8 in fig. 2 on page 4).
Inputs In single operation mode of the SKM 2-00, the outputs of the twin modules must be combined by
means of a splitter. The input splitters (SKV 2..8-00) in connection with F-double sockets (CFA 3-00) may
be used.
© AXING AG – state of the art: May 2012 – Reserving change in design and typePage 6
Programming
SKM 2-00
4Programming
The programming of the modules is done by means of the remote control SKZ 10-00 included in the scope
of delivery of SKS x-xx.
Fig. 5 Remote control
Control keys
Start programming
Select output channel
Vernier adjustment of the output frequency
Increase output level
Decrease output level
© AXING AG – Stand: 10.11.08 – technische Änderungen und Irrtümer vorbehalten
Setting TV standard
Setting audio mode
Save settings
Finish programming without saving
Seite 7
Programming
SKM 2-00
q2
02
4.1 Deployment
During initial operation of the SKM 2-00, the
output channels and TV standard must be set
first!
4.1.1 Selecting wire (left or right)
To be able to program the left duct of the
module, the programming selection switch
must be moved to the left.
After pressing the UHF key on the remote
control, a point lights up at the bottom right
corner of the display of the left duct.
This shows that the modulator is in
programming mode.
A test image and test sound are switched on.
4.1.2 Setting output channel
By pressing the CH / CH key, the desired
output channel may be set.
Special channels are labeled by a 2nd dot
between the digits on the display.
4.1.3 Setting TV standard
To set the TV standard, the SYS key (on the
remote control) must be pressed until the
desired TV standard is set.
TV standard Display
BG
I
DK
L
NM
Tab. 1: TV standards
b6
i
d
l
m
n
0
q0
mm
5Ð
Note
4.1.4 Vernier adjustment of the output frequency
If required the channel output frequency may
be adjusted finely. This is done by means of
the VOL
Adjustment range is +/- 4 MHz.
The variation from the CCIR channel
frequency is shown on all 4 digits in the display
of the module.
/ VOL
keys in 250 kHz steps.
4.1.5 Setting output level
By pressing the double arrow keys, the output
level of the modulator twin module may be
energized in 1dB steps. The set attenuation is
shown in the display.
The output level is 105dBuV when "20“ is
shown on display.
The output level is 85dBuV when "0“ is shown
on display.
4.1.6 Setting audio mode
The module is in mono mode by default.
By pressing the audio key of the remote control
several times, the stereo or dual mode can be
activated for the B/G standard.
The stereo or dual mode will be active only
after completing programming. The slide
switch must be in center position.
4.1.7 Finishing the programming
These settings must be saved with the OK key.
To discard settings, press the EXIT key.
Programming mode is ended. Test image and
test sound are turned off.
After finishing the programming, the
programming selection switch must be moved
to the center position.
Programming of the right duct is done
identically as for the left duct.
© AXING AG – Stand: 10.11.08 – technische Änderungen und Irrtümer vorbehaltenSeite 8
5 Technical specifications
The product complies with guidelines and standards for CE Marking.
Technical specifications
SKM 2-00
Article
Inputs
Video
Type of signal CVBS
Typ. input level 1 Vss
Input impedance 75 Ohm nominal
Frequency range 20 Hz…5 MHz
Connectors 2 × Cinch female (1 per modulator)
Audio
Typ. input level 500mV eff.
Typ. input impedance 4,7kOhm
Frequency range 20 Hz…15 kHz
Connectors 4 × Cinch female (4 per modulator)
Output
RF level 85…105dBµV
Output frequency range 112,25…855,25 MHz
Output channels S2…K69, nachbarkanaltauglich (VSB)
TV standards B/G, DK, I, L, MN
Output impedance 75 Ohm
Mudulation Mono, Stereo (in B/G standard)
Common
Power consumption 16V=/0,7A
Dimensions appr. 72 mm × 218mm × 129mm
SKM 2-00
© AXING AG – Stand: 10.11.08 – technische Änderungen und Irrtümer vorbehalten
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