CD module:
To be measured on COMBI BOARD connector 1015 .
frequency response
: 20Hz - 20.000 Hz ±3dB
signal/noise ratio
:
≥
76dB (A-weighted)
distortion
:
≤
0,5% at 1 kHz)
channel difference
:
≤
1dB at 1 kHz
channel crosstalk
:
≤
-60dB at 1kHz
de emphasis
: 0 or 15/50µs switched automatically by subcode on the disc
laser
output power
: 500µW
wave length
: 780 ±20nm
Wireless module „WESSLI“:
To be measured on COMBI BOARD connector 1022 .
frequency response
: 20 - 20.000 Hz ±3dB
signal/noise ratio
:
≥
94dB (A-weighted)
distortion
:
≤
0,05% at 1 kHz)
channel difference
:
≤
1dB at 1 kHz
channel crosstalk
:
≤
-75dB at 1kHz
Measurement setup
L
R
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
S/N and distortion meter
e.g. Sound Technology ST1700B
DUT
CD
Use Audio Signal Disc SBC429 4822 397 30184
(replaces test disc 3)
Bandpass
250Hz-15kHz
e.g. 7122 707 48001
LF Voltmeter
e.g. PM2534
DUT
S/N and distortion meter
e.g. Sound Technology ST1700B
Frame aerial
e.g. 7122 707 89001
Tuner AM (MW,LW)
To avoid atmospheric interference all AM-measurements have to be carried out in a Faraday´s cage.
Use a bandpass filter (or at least a high pass filter with 250Hz) to eliminate hum (50Hz, 100Hz).
RF Generator
e.g. PM5326
Ri=50
Ω
Bandpass
250Hz-15kHz
e.g. 7122 707 48001
LF Voltmeter
e.g. PM2534
DUT
RF Generator
e.g. PM5326
S/N and distortion meter
e.g. Sound Technology ST1700B
Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).
Ri=50
Ω
Tuner FM
1-3
TECHNICAL SPECIFICATION
