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ESVB測(cè)量接收機(jī)，大屏幕顯示器系列，60分貝甚至準(zhǔn)峰值和平均指示; 70民建聯(lián)/的DVB信號(hào)測(cè)量分貝不改變輸入衰減
1固定調(diào)整和5跟蹤預(yù)選濾波器，可以選擇4個(gè)附加的固定調(diào)諧濾波器
ESVB接收機(jī)—到1/2.05GHz receveir 20MHz的，在數(shù)字音頻和視頻廣播網(wǎng)絡(luò)的覆蓋面測(cè)量民建聯(lián)，DVB - T的性能。

品 牌：德國(guó)羅德與施瓦茨 | 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 type).


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


Other Info: 
With a bandwidth of 1.5 MHz and 8 MHz matching the DAB/DVB-T channel, ESVB 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 transmission bandwidth, so that only the RMS measurement method is suitable for determining the power. A thermal power meter is inadequate for measurements because of the speed. Therefore, the ESVB features an RMS detector allowing the power at the receiver input to be indicated very quickly and over a wide range.

 

有意者請(qǐng)：

深圳市微普測(cè)電子有限公司 陳丙州-