Adcom GTP-740 Service Manual page 55

TECHNICAL SPECIFICATION
5. Signal to noise ratio (B, 6 for output)
100mV and play A27 config 1 and 2.) 200Hz Notch
(FL, FR, C, SL, SR)
6. Channel separation
(insert 20KHz L.P.F.)
7. Set config 2 at 1Vrms output (sub)
as ref. and measure FL/FR output
center and rear delay set to 0ms
GENERAL AUDIO SPECIFICATION - 3
DVD (DOLBY 1.0)
Input source: Digital input
Specification Details
1. Output level (Vol max.)
(FL, FR, C, SL, SR) at config 1
2. Channel difference, FL set ref.
(FL, FR, C, SL, SR) at config 1
3. Frequency response
at config 0
at config 0
4. Harmonic distortion at 0.2Vrms
(insert Audio LPF) at config 1.
at 2Vrms
5. Signal to noise ratio (31 for output)
100mV and play 63 config 1 and 2.)
(FL, FR, C, SL, SR)
6. Channel separation
(insert 20KHz L.P.F.)
7. Set config 2 at 1Vrms output (sub)
as ref. and measure FL/FR output
center and rear delay set to 0ms
GENERAL AUDIO SPECIFICATION - 4
Surround mode: 2 channels (FL & FR channels)
Input source: Analog input (audio analyser)
Input level: 2.0V unless specified.
Specification Details
1. THD
w/ 20kHz LPF, output=2Vrms
2. S/N ratio
A-wtd w/1K termination, output=2Vrms 1kHz
3. Sensitivity
input level=400mV, max vol.
4. Channel separation
80kHz LPF w/ 1K termination
output=2Vrms
CCIR/ARM
and 400Hz HPF.
PAUSE Audio LPF
A-Wtd
A, 31 (997Hz)
A71 (30Hz)
Track
30
30
(set 30) SL. 46 (200-20KHz)
(set 30) SR. 47 (200-20KHz)
(set 30) C. 44 (200-20KHz)
(set 30Hz) LFE. 48 (20-80)
SL. 30 (997Hz)
SR. 30 (997Hz)
C. 30 (997Hz)
LFE. 70 (30Hz)
CCIR/ARM
200Hz Notch
and 400Hz HPF.
PAUSE Audio LPF
A-Wtd
65 (997Hz)
70 (30Hz)
Freq.
1kHz
1kHz
1kHz
10kHz
71
≥65
dB
≥70
dB
≥70
dB
≥75
dB
dB +10.5±1.0
Unit Limit
Vrms 1.29±0.2
dB ±1.2
dB ±0.8
dB ±0.8
dB ±0.8
dB ±4.0
≤0.08
%
≤0.08
%
≤0.08
%
≤0.03
%
≥65
dB
≥70
dB
≥70
dB
≥75
dB
dB +10.5±1.0
Unit Limit
≤0.08
%
≥70
db
V 2.25±0.2
≥60
dB
≥40
dB
GTP-740