Grundig T9000 Тюнер
Производитель:
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Модель:
T9000
Дата:
1987
Категория:
Группа:
Описание:
Информация
Technical Specification
Waveband Coverage
VHF/FM 87,5...108 MHz
AM (MW) 522... 1620 kHz
FM Sensitiflty (75 ft, 40 kHz deviation)
FM Mono: £0,6 jaV (narrow bandwidth)
FM Stereo: £ 24 jiV
FM Limiting
£0,5 |iV for -1 dB
Stereo Switch-over Threshold
Stereo on/off: 4/2,8 ^iV at 98 MHz into 75 ft
Muting Threshold
Muting on/off: 3,2/2,8 |aV at 98 MHz into 75 ft FM Station
Search Threshold Adjustable: 10 fiV min./300 max. (into 75 ft)
FM Signal-to-Nolse Ratio (Unweighted)
In the range 22,5 Hz...15000 Hz, 40 kHz deviation, 1 mV into
75 ft. Rms value (without AGC): Mono > 75 dB; Stereo > 74 dB
FM Signal-to-Nolse Ratio (Weighted)
Measured at 1 mV into 75 ft, 40 kHz deviation.
Rms value to curve "A"(without AGC): Mono > 79 dB; Stereo >
76 dB.
Frequency Response on VHF (FM)
10 Hz -16,8 kHz: £ 3 dB; 30 Hz -15 kHz: £ 1 dB Distortion
Factors
Measured according to DIN 45500 with 1 mV into 75 ft Mono, 1
kHz,40/75 kHz diviation: £0,05/0,1 %
Stereo, 1 kHz, Lor R, with 40/75 kHz deviation: £0,1/0,2%
Dynamic Selectivity
> 65 dB (normal bandwidth); > 83 dB (narrow bandwidth)
(± 300 kHz, referred to 40 kHz deviation, - 30 dB noise)
FM Crosstalk
1 mV aerial voltage, 47,5 kHz total deviation:
1 kHz > 44 dB, measured selectively Output Voltages
(input signal of 1 mV, 1 kHz, 40 kHz deviation)
Adjustable AF output (on the rear):
Adjusting range: approx. 0,2 V -1,7 V (with'centre stop
position at 850 mV ± 2 dB)
Fixed level output (on the front of the unit): approx. 1,7 V
± 2 dB Headphone output (adjustable): 4 V/120 ft
Hасто́льная кни́га тип:
Руководство по техническому обслуживанию
Страницы:
38
Размер:
27.74 Mbytes (29082271 Bytes)
Язык:
english
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Hасто́льная кни́га ID:
Дата:
Качество:
Сканированный документ, читая частично плохо, частично не читается.
Дата загрузки:
2015 05 25
MD5:
cc3157e1233b96e906fead57191eeb4b
Загрузки:
1835
Информация
Contents
1 Technical Specification
2 General Notes
3-4 Disassembly Instructions
5-8 Spare Parts List
9 Instruction notes Circuit Discription:
10-11 - RDS Data
11 - Mains part
11-12 - + 15 V Mains Part
12 - The negative Voltages 12 - Heating for the Display
12 - Suppression of the flashing during the
switching-off
13 - 31V Mains part 13,15 - Synthesizer
14 - Alignment of the reference box 14 - Service (Testmode)
16 - Signal path
16 - Mixer
16,18 - IF Amplifier
16,17 - AGC (Automatic gain control)
18 - Bandwidth switching
19 - PUL Demodulator
19 - Self seek evaluation and field strength
indication
19,20 - FM Alignment
20 - AGC Alignment 20 - AM Alignment
20 - Adjustment of the field strength indication
21 - RDS demodulator and alignment
22 - PLL Stereo decoder and alignment
22 - Calibrating tone generator and alignment
22.23 - Computer panel
23.24 - Display
24 - Alignment of the FM fieldstrength indication
25 Alignment layout
26 Connecting diagram of the display 27,28 Discription of
symbols
29-32 Printed circuit boards
33-44 Connecting diagram