Rohde & Schwarz ESVB
Test Receiver
Description
This Test Receiver is able to cover the entire COFDM spectrum with a bandwidth matching the DAB/DVB-T channel.
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 transmission 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, this unit features an RMS detector allowing the power at the receiver input to be indicated very quickly and over a wide range.
Key Points
Large display range, 60dB even for quasi peak and average indication; 70dB 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 100Hz steps, sweep mode for fast frequency scanning; frequency accuracy complying with GSM recommendations
IF filters (10KHz,120KHz, 300KHz) with optimized group delay in the third IF stage; additional 1.5MHz and 8MHz channel filters for DAB/DVB (SAW filters type).
I/Q demodulator (1.5/4MHz bandwidth per demodulated channel); I/Q demodulator for narrow-band IF filters included in ESN-B1 (bandwidth = 1/2 IF bandwidth)
Specifications
Form Factor: Benchtop
Frequency range: 20MHz to 1GHz
Input Impedance: 50ohms
Frequency Accuracy: 0.00000000001%
