TBCG3-CN

Comb Generator

The TBCG3-CN Comb Generator is a device designed to verify conducted emission test setups in EMC testing. It generates a wide spectrum comb signal that helps validate the proper operation of key test components such as LISNs (Line Impedance Stabilization Networks) and the configuration of the spectrum analyzer used for conducted emission measurements. A rotary switch allows selecting between several fixed comb frequencies or using an external excitation source, enabling flexible test verification. The unit is battery powered with an external charger included and features a rugged aluminium housing with a tripod mount thread for easy positioning.

Datasheet

Features

Key capabilities and advantages

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Designed for conducted emission test setup verification.
Produces a wide comb spectrum with flat response up to 1.5 GHz.
Selectable fixed comb frequencies via rotary switch.
External excitation input for flexible frequency source use.
50 Ω output with N-female connector for compatibility with RF test equipment.
Portable, battery-powered (4 × AA NiMH) with charger included.
Solid aluminium housing with ¼″-20 tripod mount for easy positioning.

Specification

Technical specifications and parameters

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Specified bandwidth	1.5 GHz
Flatness of the comb spectrum	8 dB typically
Output impedance	50 Ohm
Output power	66 dBµV @ 10 MHz f comb ; decreasing 6 dB with every fcomb /2
Amplitude stability	< 0.2 dB; <0.1 dB after 15 minutes
Aging	< 0.5 dB over 12 months
Output connector	N-female
Selectable, fixed comb frequencies	100 kHz, 500 kHz, 1 MHz, 5 MHz, 10 MHz
Frequency stability	50 ppm
Input impedance	50 Ohm
Input connector	SMA-female
Current consumption	70 mA
Indicators	Power On LED, Low Battery LED
Power supply	4 x AA NiMH (e.g. Varta Mignon 2700, not supplied)
Charger	external; Ansmann ACS110
Operation time	battery capacity / 70 mA
Temperature range	-20°C to +45 °C
Housing diameter	180 mm
Housing height	60 mm
Weight	1250 g