TBCG3-RN2

Comb Generator

The TBCG3-RN2 Comb Generator is a portable RF signal source that produces a wide spectrum of evenly spaced frequencies (a comb spectrum) to verify and validate radiated emission test setups. It helps check that antennas, pre-amplifiers, and measurement systems are working correctly in EMC testing environments, making it ideal for quick system checks and pre-compliance diagnostics.

Datasheet

Features

Key capabilities and advantages

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Designed for radiated emission test setup validation
Generates a wide comb spectrum with selectable base frequencies
5 fixed comb frequencies with rotary switch control
Supports external excitation input for flexible signal sources
Includes two monopole antennas for low and high bands
Portable, battery-powered with external charger included
Rugged aluminium housing with tripod mount for convenient use

Specification

Technical specifications and parameters

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Characterized frequency range	5 MHz – 3 GHz
Comb spectrum flatness up to 1.5 GHz, amplifier off	typically 8 dB at the RF connector
Comb spectrum flatness up to 1.5 GHz, amplifier on	typically 12 dB at the RF connector
Output impedance	50 Ohm
Output power	-5 dBm max. @ 100 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 MHz, 50 MHz, 25 MHz, 10 MHz, 5 MHz
Frequency stability	50 ppm
External input impedance	50 Ohm
Input connector	SMA-female
Indicators	Power On LED, Low Battery LED
Power supply	6 x AA NiMH (e.g. Varta Mignon 2700, not supplied)
Charger	external; Ansmann ACS310
Antennas	30 cm monopole for f<300 … 500 MHz; 10 cm monopole for f>300…500 MHz
Operation time	battery capacity / 96 mA (ampl. off) or 181 mA (ampl on)
Temperature range	-10°C to +45 °C; lower operating temperature depending on batteries
Housing diameter	180 mm
Housing height	60 mm
Weight	1250 g