TBCG3-RN2 - Comb Generator

  • $1,490.00

The TBCG3-RN2 comb generator is primarily intended for testing radiated emission setups. It is a useful tool for validating the proper operation of the antenna and pre-amplifier, as well as the 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. A switchable RF amplifier may increase the output signal by 20 decibels (dB).
The comb generator comes with two monopole antennas, a 30 cm monopole for frequencies up to 300-500 MHz and a 10 cm monopole for frequencies above that.
The radiated comb spectrum is characterized from 5 MHz – 6 GHz.

The TBCG3-RN2 has a 50 Ohm output with a female N-connector. It runs on six AA NiMH batteries and comes with an external charger.
The housing is machined of solid aluminium. The bottom panel has a 1/4" - 20 UNC thread that accepts regular tripod bolts.


  • 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 excitation input: 5 kHz – 200MHz @ square input signal; 3.3 Vpp max,100 kHz – 200 MHz @ sinus input signal; 3.3 Vpp max
  • 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


TBCG3-RN2 User Manual