NAD T742, Service Manual

Page: 4 / 65

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) ≥ 45 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
Input level is expressed as the reading in open-circuit
of 75-ohm source impedance signal generator
Usable Sensitivity ( 98 MHz)
≤ 15 dBµ
Signal / Noise Ratio Mono ≥ 72 dB
(60 dBµ, IHF wtd) Stereo ≥ 66 dB
Frequency Response (20 Hz - 15 kHz, 60 dBµ) 0 ± 1.5 dB
Channel Separation (60 dBµ) 100 Hz ≥ 30 dB
1 kHz ≥ 40 dB
10 kHz ≥ 30 dB
Alternate Channel Selectivity
(40 dBµ, ±400 kHz) ≥ 60 dB
Capture Ratio (40 dBµ) ≤ 3 dB
AM Suppression
(60 dBµ, 100% Mod.FM, 30% Mod.AM) ≥ 48 dB
Image Rejection (119.4 MHz) ≥ 68 db
I.F. Rejection ( 10.7 MHz) ≥ 78 dB
Pilot Suppression (60 dBµ) ≥ 60 dB
THD (60 dBµ, L=R 75 kHz for AH, 40 kHz Dev for C)
Mono ≤ 0.25%
Stereo ≤ 0.35%
Auto-Search Sensitivity On ≥ 24 dBµ
Off ≤ 15 dBµ
RDS decode Sensitivity ≤ 26 dBµ
POWER RATING
EUROPEAN Model *C AC 230V~ 50Hz 1.2A
USA, CANADIAN Model *AH AC 120V~ 60Hz 2.5A
PHYSICAL SPECIFICATIONS
Dimensions (Width x Height x Depth) 435 x 131 x 348mm
Net weight 14kg (31 lbs)
Shipping weight 16.7kg (37 lbs)