NAD T 175, Service Manual, Page: 5 / 102

5
DTS SECTION
Output Level (Vol 0 dB) : FL/FR/C/SL/SR Track 6 1 kHz 200
±
10mV
Channel Difference (FL ref) : FL/FR/C/SL/SR Track 6 1 kHz 0
±
1.5 dB
Harmonic Distortion (Audio Filter) : FL/FR/C/SL/SR Track 10-14 1 kHz
≤
0.08 %
Frequency Response (20 Hz to 20 kHz) Track 26-30 +2/-1.5 dB
Subwoofer Output Level 1 kHz ref at pre-out (FL) Play Track 10, change to 15 12.5
±
1.5 dB
NOISE MEASUREMENT
Surround mode noise (Preout) DVD input 1V (L 20-20kHz - 72dB
only), volume @ -12dB, Enhanced Stereo 1 mode, A-WTD - 75dB
100mV Preout output reference
Surround mode noise (Subwoofer out) DVD input 1V 20-20kHz - 75dB
(L only), volume @ -12dB, Enhanced Stereo 1 A-WTD - 78dB
mode, 1V Preout output reference
Surround mode noise (Preout) DVD input 1V (L 20-20kHz - 48dB
only), maximum volume, Enhanced Stereo 1 mode, A-WTD - 50dB
100mV Preout output reference
Surround mode noise (Subwoofer out) DVD input 1V 20-20kHz - 67dB
(L only), maximum volume @ -12dB, Enhanced A-WTD - 72dB
Stereo 1 mode, 1V Preout output reference
AM TUNER SECTION
Input level is expressed as the reading in open circuit
of 75-ohm source impedance signal generator
Usable sensitivity (999/1000 kHz)
≤
60 dB
μ
V
S/N Ratio (5 mV in)
≥
38 dB
THD (5 mV in)
≤
3 %
IF Rejection (450 kHz)
≤
36 dB
Image Rejection (F+2xIF)
≥
28 dB
Selectivity
≥
17 dB
Output 170 -20/+30 mV
Loop sensitivity (20 dB S/N)
999/1000 kHz
≤
66 dB
603/600 kHz
≤
66 dB
1404/1400 kHz
≤
66 dB
Frequency Response (100 - 2.3 kHz, 5 mV)
±
6 dB
FM TUNER SECTION *C *AH
Input level is expressed as the reading in open circuit
of 75-ohm source impedance signal generator
Usable sensitivity (98 MHz)
≤
15 dB
μ ≤
15 dB
μ
v
S/N Ratio (60 dB, IHF wtd) Mono
≥
60 dB
≥
60 dB
Stereo
≥
63 dB
≥
63 dB
Frequency Response (20 Hz - 15 kHz, 60 dB
μ
) 0
±
1.5 dB 0
±
1.5 dB
Channel Separation (60 dB
μ
) 100 Hz
≥
30 dB
≥
30 dB
1 k
≥
32 dB
≥
32 dB
10 kHz
≥
30 dB
≥
30 dB
Alternate Channel Selectivity (40 dB
μ
,
±
400 kHz)
≥
60 dB
≥
45 dB
Capture Ratio (40 dB
μ
)
≤
3 dB
≤
3 dB
AM Suppression (60 dB
μ
, 100% Mod. FM, 30% Mod. AM)
≥
48 dB
≥
48 dB
Image Rejection (119.4 MHz)
− ≥
65 dB