GNS 20 - TV signal amplifier TRIAX - Free user manual and instructions

Product Type	TV Signal Amplifier
Brand	Triax
Model	GNS 20
Dimensions (approx.)	100 x 60 x 30 mm
Weight (approx.)	150 g
Power Supply	12V DC via mains adapter (included)
Frequency Range	47 – 862 MHz
Gain	20 dB typical
Number of Inputs	1 (Antenna)
Number of Outputs	1 (TV)
Noise Figure	< 3 dB
Main Functions	Amplifies weak terrestrial TV signals, improves signal-to-noise ratio
Cleaning and Maintenance	Wipe with a dry cloth; do not use liquids or solvents
Safety	Indoor use only; keep away from moisture; disconnect power before cleaning
Spare Parts and Repairability	No user-serviceable parts; contact Triax support for repair
General Information	Designed for DVB-T/T2 signals; includes coaxial cables and mounting accessories

Frequently Asked Questions - GNS 20 TRIAX

How do I install the Triax GNS 20 amplifier?

Connect the antenna cable to the input (marked 'ANT IN'). Then connect a coaxial cable from the output (marked 'TV OUT') to your TV or receiver. Plug the power adapter into a mains socket and connect it to the amplifier. The amplifier will power on automatically.

What should I do if I get no signal after installation?

Check all cable connections. Ensure the amplifier is powered (LED should be on). Verify that your antenna is properly aligned and in good condition. If using a splitter, ensure it is compatible with amplified signals.

Can the GNS 20 be used outdoors?

No, the GNS 20 is designed for indoor use only. Exposure to moisture or extreme temperatures can damage the unit.

What is the maximum cable length from amplifier to TV?

The amplifier can compensate for cable losses up to approximately 20 meters of standard coaxial cable. For longer runs, use higher quality cable or additional amplification.

Does the GNS 20 work with digital TV (DVB-T2)?

Yes, the GNS 20 is compatible with DVB-T and DVB-T2 signals. It amplifies the entire UHF/VHF band used for terrestrial digital TV.

How do I clean the amplifier?

Disconnect the power adapter. Use a soft, dry cloth to wipe the exterior. Do not use water, cleaning solvents, or abrasive materials.

Is it normal for the amplifier to get warm?

Yes, slight warming during operation is normal. Ensure the ventilation slots are not blocked. If it becomes excessively hot, check for overload or faults.

Can I connect multiple TVs to one GNS 20?

The GNS 20 has only one output. For multiple TVs, you will need an additional splitter. Note that splitting the signal reduces strength; a distribution amplifier may be needed for many TVs.

What does the LED indicate?

A steady green LED indicates normal operation. If the LED is off or red, check the power connection and try a different mains socket.

Where can I find the user manual?

The manual is available for free download on notice-facile.com in PDF format. You can also request a translated version by email.

USER MANUAL GNS 20 TRIAX

TRIAX GNS 30 Sediment Anamulator Sediment Anamulator Sediment Anamulator Sediment Anamulator Sediment Anamulator Sediment Anamulator Sediment Anamulator Sediment Anamulator Sediment Anamulator Sediment Anamulator Sediment Anamulator Sediment Anamulator Sediment Anamulator Sediment Anamulator Sediment Anamulator A-1286/49 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 170 170 170 170 170 170 170 170 170 170 170 170 170 170 170 170 170 170 170 170 170 170 170 170 170 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 175 172.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2.2. TRIAX GNS 20 Sediment Anamulator Sediment Anamulator

GNS 20 - GNS 30

Operating Instructions Terrestrial Multiband amplifier

TRIAX TRS140 GNS 30 MultiBand Amplifier MultiBand/Amplifier Amplifier Testes Blades 239138 Band C:65 P:40P:07 VHF I 20 118 FM 20 118 VHF I 20 118 235 x - 50-40Hz 0.1W Product at TRIAX Group UHF VHF III - VHF I Output GNS 20 UHF VHF III VHF I FM Output GNS 30 CLASS A ■ CLASS

GNS 20 Order No. 339120

GNS 30 Order No. 339130

Description

GNS 20, 30 are low-noise multi-range amplifiers with digital capability, four highly selective range inputs and one output. For use in all small and medium-sized common antenna networks in which terrestrial signals must be amplified.

High amplification and a high output level make the GNS range of amplifiers suitable for both DVB-T and analog antenna signals.

→ You can operate VHF III and UHF alternately or common using the integrated jumper - e.g. when using combination antennas.
Connectable +5 V remote supply to the UHF or VHF III inputs - e.g. for supplying power to active DVB-T antennas.

→ Level controller 0...-20 dB at each input
Low power consumption
Low-noise inputs for DVB-T
→ The die-cast housing with cooling fins reduces the component temperature and thereby increases both service life and reliability
→ HF connections: F sockets, molded
Conforms to the standards EN 60065, EN 50083-3, EN 50083-5, CE

Correct and incorrect use

This unit may only be operated as described in these instructions. Any other form of incorrect

use shall result in all warranty claims being void.

Safety Requirements

CAUTION: Observe the safety requirements of EN 50083 -1

→ Equipotential bonding

The complete system must be provided with equipotential bonding by means of a mechanically stable protective conductor with

a minimum cross-section of 4 mm^2 . There is a connection point at the earthing screw at the right wall bracket.

NOTE: The unit must not be exposed to dripping or splashing water.

Installation

Choose a location and orientation that will not impair the convection cooling of the amplifier:

• Horizontal (cooling fins aligned vertically)
- Uncovered on wall
- Installed in a cabinet only in strict conformance to the permissible ambient

operating temperature (measured in the air stream underneath the amplifier)

→ Wall mounting

• Fixed to brackets by appropriately sized screws (dia. max. 4.8 mm)
  • Fixings 158 mm apart

Recycling Information

When this product has reached the end of its useful life, it is to be turned in for proper disposal as electronic refuse in

compliance with the current disposal regulations of your respective city/country/state.

Setting possibilities

The Multiband amplifiers GNS have the following setting possibilities:

Default setting

Level adjuster,

at all inputs 0...20 dB 0 dB

Power supply for the connected terrestrial antennas

input UHF 0 / +5 V 0 V

input VHFIII 0 / +5 V 0 V

Combining the inputs

UHF and VHFIII, e.g.

when using combination

antennas off/on off

Option:

Power supply for the

combined inputs UHF

+ VHFIII (with additional

jumper, not included) 0 / +5V -

Settings are done as follows:

1. Remove the housing lid:

After slackening the central bolt (a) lift the lid off by releasing the catch on the left-hand side (b).

For adjustments now the level adjusters and the jumper on the circuit board are accessible.

Fig. 1 Housing

b a GNS 20 TRIAX above

Jumper Level adjusters at all inputs

2. Adjuster elements

no power supply for terrestrial antenna (Default setting)

+5V power supply at UHF

+5V power supply at VHFIII

no power supply UHF + VHFIII common at input UHF

UHF + VHFIII common at input UHF +5V power supply

3. close the housing lid:

Put the housing lid on the housing and press all the way round. The sheet steel segments will now be pressed against the inner wall of the housing. Screw in the central screw.

Technical Data

Type	GNS 20	GNS 30
Order No.	339120	339130
Frequency range
Input 1	- UHF (1)	MHz	470...862	470...862
Input 2	- VHF III	MHz	174...230	174...230
Input 3	- VHF I MHz	- 47...68
	- UHF (2) MHz	- -
Input 4	- FM	MHz	47...68 and	-
	- VHF I MHz	87,5...108	87,5...108
option: input 1 and input 2 combined with jumper		MHz	470...862 and 174...230	470...862 and 174...230
Gain *
Input 1	- UHF (1)	dB	22	31
Input 2	- VHF III dB 20 30
Input 3	- VHF I	dB	-	30
	- UHF (2)	dB	-	-
Input 4	- FM / VHF I	dB 20 30
Level controller at all inputs		dB	0...-20	0...-20
Noise figure *
Input 1	- UHF (1)	dB	4	4
Input 2	- VHF III dB 4	4
Input 3	- VHF I	dB	-	4
	- UHF (2)	dB	-	-
Input 4	- FM / VHF I	dB	4	4
Output level, IMR = 60 dB *
IMR 3 acc. EN 50083-5		dBμV	113	115
IMR 2 acc. EN 50083-3		dBμV	102	105
Power supply Supply voltage (50 - 60 Hz) Power consumption		V~ W 3,5	230 ±10% 6	230 ±10%
Ambient conditions acc. EN 60065
Operating temperatur range		°C	-25 ... +55	-25 ... +55
Degree of protection			II, isolated guard	II, isolated guard
Protection class			IP 20	IP 20
MTBF (Belcore @ 25°C)		h 300.000	300.000
Housing
Weight		kg	ca. 0.68	ca. 0.68
Dimensions W x H x D		mm	150 x 80 x 50	150 x 80 x 50
HF connections 75 Ω			F connectors	F connectors
Screening acc. EN 50083-2			class A	class A

triax.com/support