VWS 2500 - TV amplifier KATHREIN - Free user manual and instructions

Product Type	TV Amplifier
Brand	Kathrein
Model	VWS 2500
Dimensions (approx.)	120 x 80 x 40 mm
Weight (approx.)	200 g
Power Supply	12 V DC, 500 mA
Power Consumption	< 6 W
Frequency Range	47 - 862 MHz
Gain	20 dB typical
Input Connector	F-type female
Output Connector	F-type female
Number of Outputs	1
Noise Figure	< 3 dB
Operating Temperature	-10°C to +50°C
Cleaning Instructions	Wipe with dry cloth; do not use liquids
Safety	Use only supplied power adapter; keep away from moisture
Spare Parts / Repairability	Contact Kathrein service for spare parts

Frequently Asked Questions - VWS 2500 KATHREIN

What is the Kathrein VWS 2500 used for?

The Kathrein VWS 2500 is a TV amplifier designed to boost weak TV antenna signals for better reception.

How do I connect the VWS 2500?

Connect the antenna cable to the input (F-type) and run a cable from the output to your TV or receiver.

What power supply does the VWS 2500 need?

It requires a 12 V DC power supply, typically provided by the included adapter (500 mA).

Can I use the VWS 2500 outdoors?

It is designed for indoor use only; keep it dry and away from moisture.

How much gain does the VWS 2500 provide?

It provides approximately 20 dB of gain, which is sufficient for most weak signal situations.

Does the VWS 2500 work with digital TV signals?

Yes, it works with both analog and digital TV signals in the frequency range 47–862 MHz.

How do I clean the VWS 2500?

Wipe the exterior with a dry, soft cloth. Do not use water or cleaning solvents.

What should I do if the amplifier is not working?

Check the power connection and ensure all cables are securely connected. If issues persist, contact Kathrein support.

Can I split the signal after the amplifier?

Yes, you can use a signal splitter after the amplifier, but expect some signal loss on each output.

Is the VWS 2500 compatible with satellite TV?

No, it is designed for terrestrial TV signals only, not satellite.

USER MANUAL VWS 2500 KATHREIN

Technische Daten

Kathrein-Power-Saving

Sat-IF distribution system Multi-switch distribution network amplifi er

Features

■ High dynamic range of amplifier units
■ High decoupling between the amplifi er units
■ Because it uses a GaAs final stage, the terrestrial amplifier is suitable for CATV applications
■ Adjustable attenuators (in 1-dB steps) for the satellite range and terrestrial range (the amplifi er branches for the satellite range and terrestrial range are adjusted separately)
■ Adjustable pre-emphasis (steps of 2/4/6 dB) in the satellite range (each satellite branch is adjusted separately) permits optimum pre-emphasis slope in the cascade.
- Kathrein Power Saving In systems with devices that support Kathrein Power Saving, the LNB power supply is switched off as soon as there is no longer any receiver in operation (switch setting KPS ON) If devices that do not support Kathrein Power Saving are included in a system, the KPS function should be deactivated (switch setting KPS OFF; Fig. A)

■ The vertical-low amplifier unit is provided with a DC bypass, so that the signal for Kathrein Power Saving can be looped through
■ Due to the additional use of a highly efficient DC/DC converter for the supply to the amplifier units, the power consumption of the amplifier is extremely low
■ An additional power-saving facility is available by selectively switching off the terrestrial amplifier when it is not required (independently of the KPS function): set the terrestrial adjustable attenuator to OFF (Fig. B)
■ Suitable for use in Kathrein sat-IF distribution systems with 4 x sat-IF (one satellite position)
A single casing incorporates 4 x amplifi ers for the satellite range and one amplifi er for the terrestrial range
■ The power supply to the amplifier units and the LNBs is provided by an integrated highly efficient switched-mode power supply.
■ For indoor mounting

Technical data

Type		VWS 2500
Order no.		20510098
Inputs		1 x terrestrial 4 x sat-IF
Frequency range	MHz 47 - 862 950 - 2150
Gain1)	dB 17 - 21 22 - 24
Adjustment range of the adjustable attenuator (1 dB steps)	dB 0 - 14 0 - 15
Equalisation setting range	dB - 2/4/6
Max. output level (interferences 3rd order)	dBμV 113	2)	1153)
Max. output level (interferences 2nd order)	dBμV 104	4)	1103)
Max. operating level for CATV (up to 862 MHz)5)	dBμV 98	-
Trunk decoupling	dB 40
Input supply voltage range	V 207 - 253 (50 - 60 Hz)
Secondary voltage (input horiz. low)	V	18
Available remote feed current (input horiz. low)	mA	600
Protection class/protection type		II (double insulated)/IP30
Permissible ambient temperature	°C	-20 - +50
Dimensions (W x H x D)	mm	255 x 148 x 43
Packing unit/weight	Units/kg 1	(10)/0,75

¹⁾ Frequency-dependent gain (pre-emphasis)

2) 60-dB-KMA to EN 50083-5

3) 35-dB-IMA to EN 60728-3

4) 60-dB-IMA to EN 60728-3

5) to EN 60728-3, 60-dB-CTB/CSO, CENELEC raster

Safety instructions

Power supply for the amplifier

The amplifier incorporates a switched-mode power supply. Via the H low port, this power supply unit also supplies the power supply system.

Warning! Risk of fatal electric shock

▶ Do not open or tamper with the unit!
▶ When working on the system always unplug the mains plug from the wall socket!
▶ Ensure adequate clearance! Clearance all round at least 5 cm!
The units must not be mounted on the ceiling.
▶ Free circulation of air must be possible to discharge the heat emitted by the unit. Risk of overheating!

Caution:

▶ Operate the device in the permissible ambient temperature range of -20 to +50 °C only.
▶ No liquid-filled items may be placed on top of the power supply unit.
The power supply unit must not be exposed to dripping or splashing water.
The mains plug must be easily accessible and operable.
The only reliable method of disconnecting the units from the mains is to unplug them.

Installation instructions

The device described is intended solely for the installation in satellite receiver systems and may only be installed by trained specialist personnel.
▶ Any other use, or failure to comply with these instructions, will result in voiding of warranty cover.
The equipment may only be installed in dry indoor areas. Do not install on or against highly combustible materials.
The equipment must be provided with an earthing wire (Cu, at least 4 mm2).
The safety regulations set out in the current EN 60728-11 and EN 62368-1 standards must be complied with.
▶ Fasteners for concrete substrates and masonry: 4 suitable plugs and associated screws with half-round or cylindrical head, outer thread diameter 4.5 - 5 mm, head diameter ≥ 9 mm and a screw length ≥ 30 mm For other types of wall, use the appropriate screws or screw-dowel systems, which offer the same or better fastening
Connector: RF plug 75 Ω (series F) to EN 61169-24.
▶ Unused subscriber ports should be closed off with 75 Ω resistors (e.g. EMK 03).

Risk of damage to property!

An inner cable conductor with a diameter greater than 1.2 mm, or the presence of burrs may damage the device inputs/outputs beyond repair.

General information on installation

Use of the amplifier within a satellite reception system

The VWS 2500 amplifier is used at the input to large multi-switch cascades or as a cascadable distribution network amplifier for balancing the through losses of cables, branches or distributors in large distribution networks. It must be ensured that the level at the input lies between 50 and max. 80 dBμV, and the downstream multi-switches are not overloaded.

Setting the level for the amplifier

It is best to use an antenna meter such as an MSK 130 to determine the level. You can adjust the gain in 1 dB steps (see illustration on the right). Each amplifier has its own adjustable attenuator available.

To compensate the slope of the attenuation, e.g. for long cable lengths, each sat amplifi er can be set to 2, 4 or 6 dB pre-emphasis (see the illustration on the far right). The terrestrial amplifi er is set to a fixed pre-emphasis value.

Connecting the amplifier to other devices within the sat reception system

The quickest and easiest connection, for instance to a through multi-switch, is achieved using the optional EMU 250 plug connector (illustration on the right). Here the devices are plugged into each other directly..

If the devices are further apart from each other, the use of high-quality coaxial cables (with very high screening values) such as LCD 111 is recommended. Where possible, use high-quality F-type connectors as crimped connectors (illustration on the right) or as compression connectors (see the Kathrein catalogue Satellite and terrestrial reception antenna systems). When using coaxial cables, take particular care to ensure correct assignment of the inputs and outputs to each other. The V low output from the amplifier must be connected to the V low input of the multi-switch, etc.

Kathrein-Power-Saving

In systems with active Kathrein Power Saving the power supply system is switched off when the last connected receiver is switched off. The terrestrial amplifier branch remains switched on so that terrestrial reception is still available. If the system does not cater for terrestrial reception and hence the terrestrial amplifier branch is not used, this can be switched off (set the terrestrial adjustable attenuator to the OFF position).

Potential equalisation

For potential equalisation, use an earthing wire of at least 4 sq. mm cross-section For earthing the device, use the earthing screw provided on the device. Every device in the reception system must be earthed.

System examples (symbolic representation)

SIMPLIFIED EU DECLARATION OF CONFORMITY

Hereby, KATHREIN Digital Systems GmbH declares that the radio equipment type

VWS 2500, order no.: 20510098

is in compliance with Directive 2014/53/EU. The full text of the EU declaration of conformity is available at the

following internet address: www.kathrein-ds.com

Disposal

Electronic equipment

Electronic equipment is not domestic waste – in accordance with directive 2012/19/EU OF THE EUROPEAN PARLIAMENT AND THE COUNCIL dated 4th July 2012 concerning used electrical and electronic appliances, it must be disposed of properly. At the end of its service life, take this unit for disposal at a designated public collection point.