标准立体声解码器 MSDC2

STANDARD STERODECODER MSDC2

厂家：德国罗德与施瓦茨   ROHDE&SCHWARZ特性：stereo multiplex input(balanced or unbalanced,selected with shorting link)Frequency range:30Hz-75KHzinput impedance(balanced):≥40KΩCommon-mode suppression:at f<150Hz:≥58dB   150Hz<f<15KHz:≥46dB   15KHz<f<100KHz:≥36dBinput impedance(unbalanced):≥20KΩnominal input level(settable in 6-dB steps):-12 to +12dBm(0dBm=0.775v into 600Ω)continuous input-level adjustment:±3dBoverdrive limit:≥6.5dBAF OUTPUTSR,L,M outputs(floating,balanced)nominal output level:+6dBmoutput impedance:≤20ΩLoad impedance:≥200ΩLevel difference between L and R channels:≤0.1dBS output(not floating,unbalanced)nominal output level:+6dBmoutput impedance:≤500ΩLinear distortionsfrequency response variations of L,R,M or S outputsignal over the frequency range 30Hz to 15KHzrelative to 500Hz:≤±0.15dBSwitchable deemphasis:50μs±2%           alternatively(slide switch on printed circuit board):75μs±2%Linear crosstalkcrosstalk between M and S channels:≥46dB(typ.50dB)crosstalk between L and R channels:at 100Hz to 5KHz:≥60dB(typ.64dB)   30Hz to 15KHz:≥58dB(typ.60dB)Nonlinear distortions(L,R,M and S outputs)Harmonic distortion at 6 and 12.5dBm:≤±0.1%Difference-frequency intermodulation distortion according to DIN 45 403 at 12.5dBm:d2:≤±0.05%                                                                                   d3:≤±0.1%weighted and unweighted noise(with 50-μs deemphasis)unweighted signal-to-noise ratio relative to +6dBmat 1000Hz,frequency range 30Hz to 100KHz,rms measurement:≥80dBweighted signal-to-noise ratio relative to +6dBm,peak-value measurement according to CCIR Recommendation 468-1:≥78dBpeak-value measurement according to DIN 45 405:≥80dBPilot-tone suppression relative to +6dBm:≥90dBSCA suppression relative to +6dBm in frequency range 56 to 96KHz(SCA level-16dB relative tomultiplex signal):≥76dBIndication on front-panel instrumentindication of L,R,M,S or pilot-tone level via selector switchindicating error:≤0.2dB plus 1.5% of full scale valuepilot-tone indication:-7.5 to -17dBAF indication(6 ranges in 10dB steps):+18 to -66dBm

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