NAD T 751, Service Manual

Page: 4 / 64

4
AM TUNER SECTION
Input level is expressed as the reading in open-circuit
of 75-ohm source impedance signal generator
Usable sensitivity (999/1000kHz)
≤
30 dBµ
S/N Ratio (5mV in)
≥
38 dB
THD (5mV in)
≤
3%
IF Rejection (450 kHz)
≥
36 dB
Image Rejection (F+2xIF)
≥
28 dB
Selectivity
≥
17 dB
Output 130+/- 20mV
Loop sensitivity (20dB S/N)
999/1000 kHz
≤
66 dB
603/600 kHz
≤
66 dB
1404/1400 kHz
≤
66 dB
Frequency response (100 - 2.3 kHz, 5mV) ± 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 dBµ
≤
15 dBµ
Signal / Noise Ratio Mono
≥
72 dB
≥
72 dB
(60 dBµ, IHF wtd) Stereo
≥
66 dB
≥
66 dB
Frequency Response (20 Hz - 15 kHz, 60 dBµ) 0 ± 1.5 dB 0 ± 1.5 dB
Channel Separation (60 dBµ) 100 Hz
≥
30 dB
≥
30dB
1 kHz
≥
38 dB
≥
38 dB
10 kHz
≥
30 dB
≥
30 dB
Alternate Channel Selectivity
(40 dBµ, ±400 kHz)
≥
60 dB
≥
45 dB
Capture Ratio (40 dBµ)
≤
3 dB
≤
3 dB
AM Suppression
(60 dBµ, 100% Mod.FM, 30% Mod.AM)
≥
48 dB
≥
48 dB
Image Rejection (119.4 MHz)
≥
85 db
≥
40 dB
I.F. Rejection ( 10.7 MHz)
≥
78 dB
≥
65 dB
Pilot Suppression (60 dBµ)
≥
60 dB
≥
60 dB
THD (60 dBµ, L=R 75 kHz for AH, 40 kHz Dev for C)
Mono
≤
0.25%
≤
0.25%
Stereo
≤
0.35%
≤
0.35%
Auto-Search Sensitivity On
≥
24 dBµ
≥
24 dBµ
Off
≤
15 dBµ
≤
15 dBµ
RDS decode Sensitivity
≤
26 dBµ
≤
26 dBµ
PHYSICAL SPECIFICATIONS
Dimensions (Width x Height x Depth) 435 x 131 x 348mm
Net weight 12.27kg (27 lbs)
Shipping weight 13.63kg (30 lbs)