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V1.0
TBCG3-CN
1 Introduction
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 comb generator comes with country specific adapter cables, which plug into the DUT
socket of the (unpowered!) LISN.
The device is powered by four AA NiMH batteries and includes an external charger.
The TBCG3-CN produces a comb spectrum with approximately 8 dB flatness in the frequency
range up to 1.5 GHz and has a 50 Ohm output with a female N-connector.
The housing is milled from solid aluminium. A ¼" – 20 UNC thread in the comb panel accepts
standard tripod bolts.
TBCG3-CN Comb Generator
Picture 1: TBCG3-CN comb generator
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Summary of Contents for Tekbox TBCG3-CN
- Page 1 The device is powered by four AA NiMH batteries and includes an external charger. Picture 1: TBCG3-CN comb generator The TBCG3-CN produces a comb spectrum with approximately 8 dB flatness in the frequency range up to 1.5 GHz and has a 50 Ohm output with a female N-connector.
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Page 2: Specification
V1.0 TBCG3-CN TBCG3-CN Comb Generator 2 Specification Specified bandwidth: 1.5 GHz Flatness of the comb spectrum: 8 dB typically Output impedance: 50 Ohm Output power: 66 dBµV @ 10 MHz f ; decreasing 6 dB with every f comb comb Amplitude stability: <... - Page 3 V1.0 TBCG3-CN TBCG3-CN Comb Generator Figure 2 – zoomed; f : 10 MHz; span: 50 MHz – 150 MHz comb Figure 3 - f : 5 MHz; 60 dBµV @ 50 MHz; spectrum flatness up to 1.5 GHz: -8dB comb...
- Page 4 V1.0 TBCG3-CN TBCG3-CN Comb Generator Figure 4 – zoomed; f : 5 MHz; span: 50 MHz – 150 MHz comb Figure 5 – zoomed; f : 1 MHz; 45 dBµV @ 50 MHz; comb span: 0 MHz – 300 MHz; spectrum flatness up to 1.5 GHz: -8dB...
- Page 5 V1.0 TBCG3-CN TBCG3-CN Comb Generator Figure 6 – zoomed; f : 1 MHz; span: 95 MHz – 105 MHz comb Figure 7 – zoomed; f : 500 kHz; 39 dBµV @ 100 MHz; comb span: 95 MHz – 105 MHz; spectrum flatness up to 1.5 GHz: -8dB...
- Page 6 V1.0 TBCG3-CN TBCG3-CN Comb Generator Figure 8 – zoomed; f : 100 kHz; 25 dBµV @ 100 MHz; comb span: 95 MHz – 105 MHz; spectrum flatness up to 1.5 GHz: -17dB 4 Spectrum plots, external frequency input Figure 9 - f : 300 MHz;...
- Page 7 V1.0 TBCG3-CN TBCG3-CN Comb Generator Figure 10 - f : 100 MHz; 85 dBµV @ 100 MHz; spectrum flatness up to 1.5 GHz: -7dB comb Signal amplitude at external input: +6 dBm Figure 10 – zoomed; f : 5 kHz; -1 dBµV @ 100 MHz;...
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Page 8: Inserting/Replacing Batteries
There is no need to swap the N-connectors of the LISN adapter cable to switch between LISN channels, when utilising a TBRFPS1 power splitter: Picture 1: TBCG3-CN connected to a LISN utilizing a RF power splitter Warning: Never connect the comb generator or the comb generator adapter cable to a powered LISN to avoid potentially lethal electric shock. -
Page 9: Ordering Information
BNC adapter for TBL50100 or TBL05100 EUT/SOURCE socket TBRFPS1 Power splitter 8 History Version Date Author Changes V 1.0 4.2.2023 Mayerhofer Creation www.tekbox.com TekBox Digital Solutions Vietnam Pte. Ltd. Factory 4, F4, Lot I-3B-1, Saigon Hi-Tech Park, Tan Phu Ward, District 9, Ho Chi Minh City, Vietnam...
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