R&S | *VB | EMI接收机|罗德与施瓦茨|EMC接收机|20MHz至1GHz

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品 牌：德国罗德与施瓦茨 | R&S | Rohde&Schwarz

Large display range, 60 dB even for quasi-peak and average indication; 70 dB for DAB/DVB signal measurements without changing input attenuation

1 fixed-tuned and 5 tracking preselection filters, optionally 4 additional fixed-tuned filters

Crystal-stabilized synthesizer as 1st local oscillator, variable in 100 Hz steps, sweep mode for fast frequency scanning; frequency accuracy complying with GSM recommendations

IF filters (10 kHz,120 kHz, 300 kHz) with optimized group delay in the third IF stage; additional 1.5 MHz and 8 MHz channel filters for DAB/DVB (SAW filters t*e).

I/Q demodulator (1.5/4 MHz bandwidth per demodulated channel); I/Q demodulator for narrow-band IF filters included in *N-B1 (bandwidth = 1/2 IF bandwidth)

Other Info:
With a bandwidth of 1.5 MHz and 8 MHz matching the DAB/DVB-T channel, *VB is able to cover the entire COFDM spectrum. The power of the total spectrum at the receiver input is the measure of DAB/ DVB-T coverage. Due to the addition of very many carriers with pseudorandom phases, the DAB/DVB-T signal behaves like white noise within the tran*ission bandwidth, so that only the RMS measurement method is suitable for determining the power. A thermal power meter is inadequate for mobile measurements because of the speed. Therefore, the *VB features an RMS detector allowing the power at the receiver input to be indicated very quickly and over a wide range.