Tekbox TBCG Advanced Comb Generators

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New Tekbox TBCG3 Series Comb generators for Conducted and Radiated Emissions

Comb generators produce a wide spectrum of equally spaced spectral lines. The comb frequency is equal to the frequency gap between neighbouring spectral lines. Comb generators are purpose-built �interferers� used to test setups for conducted or radiated emissions. Comb generators for testing radiated emission setups have been characterised in an absorber chamber and can thus be used as a reference source for non-ideal test setups.

Tekbox introduced the TBCG3 serie Comb Reference generators. Model TBCG2-CN is intended for Conducted emission, while TBCG3-RN2 and TBCG3-RN are intended for Radiated emission up to 2 or 6 GHz respectively.

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TBCG3-CN for Conducted Emission

The TBCG3-CN comb generator is primarily designed to verify conducted emission test set ups. It is a useful tool to validate correct operation of the LISN, correct set-up and correct configuration of the spectrum analyzer.
A rotary switch allows you to choose between five fixed comb frequencies and an external excitation input with a frequency range of 5 kHz to 300 MHz.

The TBCG3-CN comb generator comes with country specific adapter cables, which plug into the DUT socket of the (unpowered!) LISN.

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TNCG3-RN2/RN6 for Conducted Emission

The TBCG3-RN2 and RN6 6 comb generator are primarily intended for testing radiated emission setups. Itis a useful tool for validating the proper operation of the antenna and pre-amplifier, as well asthe accurate set-up and configuration of the spectrum analyzer. It is well characterized in an anechoic chamber and the radiated emission plots can be used as a reference to compare an EUT in a non-ideal setup against the comb generator in the same location. You can select between five fixed comb frequencies and an external comb frequency input with a range of 5 kHz to 200 MHz using a rotary switch.

The TBCG3-RN2/RN6 comb generators are tested in an anechoic chamber at 1 meter height and 3 meters from the antennamounted at a fixed height of 1m. These radiated emission plots can be used as a reference to compare an EUT in a non-ideal setup against the comb generator in the same location.

The comb generator is supplied with two monopole antennas, a 30 cm monopole for frequencies below 300-500 MHz and a 10 cm monopole for frequencies above that.

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Overview

Below an overview of the available Tekbox Comb Generators is provided. Next to the basics TBCG1 recently the much more advanced TBCG3 model have been added.

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Model	TBCG1	TBCG2	New TBCG3-CN	New TBCG3-RN2	New TBCG3-RN6
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Characterized Frequence Range	100 MHz � 6 GHz	2 MHz � 6 GHz	5 kHz-2 GHz	5MHz-2 GHz	5 MHz-6 GHz
Comb Frequencies	Internal, 100 MHz	External, 2 MHz- 300 MHz	Switchable 0.1, 0.5, 1, 5, 10 MHz External 5 kHz-300 MHz	Switchable 5, 10, 25, 50, 100 MHz External 5 kHz-200 MHz	Switchable 5, 10, 25, 50, 100 MHz External 5 kHz-200 MHz
External Input	No	No	Yes	Yes	Tes
Power Supply	9 V battery	Passive	4xNiMH, AA	4xNiMH, AA	4xNiMH, AA
Accessories	�	�	External universal charger LISN adapter Cables Splitters	2 monopole antennas, external universal charger	2 monopole antennas, external universal charger
Application	Reference for radiated emissions	General purpose, frequency multiplie	Reference for conducted emissions	Reference for conducted emissions	Reference for conducted emissions
Datasheet	TBCG1	TBCG2	TBCG3-CN	TBCG3-RN2	TBCG3-RN6