Musical Fidelity KW250S 用户手册
KW250S
CD, DAC & TUNER SPECIFICATIONS
Issue 2: 19th June 2006
Page 22 of
24
CD:
Disc
mechanism
Philips
Total correlated jitter
< 135 pS
DAC:
DAC circuits
24 bit Delta-Sigma (Bit stream) dual differential 8x over sampling
Up
sampling
192
kHz
Total correlated jitter
< 135 pS
Linearity
< 0.1dB down to -96dB
Output digital 0dB level
2.15VRMS at 1 kHz nominal
Analogue output impedance
47 Ohms
Frequency response
10Hz to 20 kHz -0.2dB max
Channel separation
> 105dB 20Hz to 20 kHz
Signal / noise ratio
> 113dB “A” weighted
Total harmonic distortion
< 0.003% 10Hz to 20 kHz
TUNER:
DAB Specifications
Supported DAB modes:
I, II, III, and IV VHF 174 240 MHz RF frequency range
L-Band (standard and Canada) 1452 1492 MHz
VHF sensitivity
-96 -97 dBm
(Measured to EN50248)
L-Band sensitivity
-95 -96.5 dBm
(Measured to EN50248)
L-band after error correction
-15 dBm Maximum Input Signal for Pseudo channel BER with real value 0.02
Band III after error correction
0 dBm
Adjacent Channel Selectivity
32 33 dBm
(Measured to EN50248)
Far-off selectivity
48 dBm
(Measured to EN5024845)
Acquisition
sensitivity
101
dBm
Input
Impedance
50Ω F type connector (to VHF/L-Band diplexer)
FM
Specifications
RF Frequency Range
87.5-108 MHz
RF Sensitivity
(S+N)/N=26dB, 90MHz@22.5KHz 5 µV Dev. F.mod=1 KHz
(S+N)/N=26dB, 90MHz@22.5KHz 5 µV Dev. F.mod=1 KHz
RF Limiting Sensitivity
0.5 µV
(S+N)/N Ultimate s/n ratio
63 dB (90MHz@200mV/22.5KHz Dev. Fmod=1 KHz)
THD
0.5% (90MHz@200mV/75KHz Dev. Fmod=1 KHz)
Stereo Channel Separation
30 dB
RDS data
CENELEC EN50067 compliant
WHIP AERIAL:
Operating Frequency
FM Band 88-108MHz
Band
III
174-240MHz
L-Band
1452-1492MHz
Gain
FM & Band III
2dBi
L-Band
5dBi
Impedance
75Ω
S.W.R.
<2.0:1
at
res.
freq.
Polarization
Vertical
Connector F-type
Operating
Operating
temperature
-20
to
+65°C
Storage
temperature -30
to
+75°C
Length
Sleeve
36mm
Retracted
153±10mm
Extended
646±10mm
Mechanical Fixing
180° swivel joint on plug with locking nut