Philips CDR779, Service Manual

Page: 2 / 78

Technical Specifications CDR779
GB 2 CDR779 1.
1. Technical Specifications CDR779
1.1 General
Mains voltage : all range version 84-
230V
Mains frequency : 50-60 Hz
Power consumption : 12W
DC output : +5V
±
10%, 50mA
max.
1.2 Input/output
1.2.1 Line output (CDR & CD)
Output level : 2Vrms at 0dB
Output resistance : 200
Ω
1.2.2 Line input
Input sensitivity : 500mVrms
Input impedance : 50k
Ω
Max. input voltage : 2.5Vrms
1.2.3 Digital output (CDR & CD)
Format : AES/EBU format
according IEC958
(consumer format)
Sampling frequency : 44.1kHz
Output resistance : 75
Ω
1.2.4 Digital input
Format : AES/EBU format
according IEC958
(consumer format)
Sampling frequency : 32 to 48kHz
Input resistance : 75
Ω
1.2.5 Optical input
Format : AES/EBU format
according IEC958
(consumer format)
Sampling frequency : 32 to 48kHz
1.3 Audio performance
1.3.1 Cinch analog output (CDR play-back)
Output voltage : 2Vrms
±
2dB. (0dB
digital).
Frequency range F.R. : 20Hz < F.R. <
20kHz.
Amplitude linearity :
±
0.15dB.
: typical.:
±
0.1dB.
Channel unbalance : <0.3dB at 1kHz.
: typical:
±
0.2dB.
Phase non-linearity : <0.2deg at 1kHz.
Outband attenuation : 50dB above 30kHz.
Channel separation : >100dB at 1kHz.
: typical: 110dB.
: >84dB from 20Hz.
until 20kHz.
: typical: >85dB.
S/N-ratio A-weighted : >99dB.
: typical: 100dB.
S/N-ratio unweightes : >97dB.
: typical: 98dB.
Dynamic range : > 94dB. at 1kHz.
: typical: 95dB.
THD+N : > 89dB from 20Hz.
until 20kHz.
: typical: 90dB.
1.3.2 Cinch analog input/output (monitor path CDR)
Measued with Audio precision system one.Input voltage is
2Vrms.
input voltage
: 2Vrms
±
2dB. (0dB
digital).
Frequency range F.R. : 20Hz < F.R. <
20kHz.
Amplitude linearity :
±
0.2dB.
: typical.:
±
0.1dB.
Channel unbalance : < 0.2dB at 1kHz.
: typical:
±
0.15dB.
Input resistance : 25k(
Phase non-linearity : < 0.2deg at 1kHz.
Outband attenuation : 50dB above 30kHz.
Channel separation : > 90dB at 1kHz.
: typical: 100dB.
S/N-ratio A-weighted : > 87dB.
: typical: 93dB.
S/N-ratio unweighted : > 87dB.
: typical: 90dB.
Dynamic range : > 86dB. at 1kHz.
: typical: 90dB.
: > 86dB from 20Hz.
until 20kHz.
: typical: 90dB.
THD+N : > 86dB from 20Hz.
until 20kHz.
: typical: 87dB.
1.3.3 Cinch analog output (CD play-back)
Output voltage : 2Vrms
±
2dB. (0dB
digital).
Frequency range F.R. : 20Hz < F.R. <
20kHz.
Amplitude linearity :
±
0.3dB.
: typical.:
±
0.1dB.
Channel unbalance : <0.3dB at 1kHz.
: typical:
±
0.2dB.
Output resistance : 200(.
Phase non-linearity : <0.2deg at 1kHz.
Outband attenuation : 60dB above 30kHz.
Channel separation : >95dB at 1kHz.
: typical: 100dB.
: >90dB from 20Hz.
until 20kHz.
: typical: >93dB.
S/N-ratio A-weighted : >98dB.
: typical: 100dB.
S/N-ratio unweighted : >92dB.
: typical: 95dB.
Dynamic range : >92dB. at 1kHz.
: typical: 96dB.
: >90dB from 20Hz.
until 20kHz.
: typical: 96dB.
THD+N : >82dB from 20Hz.
until 20kHz.
: typical: 85dB.