SONY 7F 74W Service Manual

Service

SK 100
SK 300
SK 500

Part 1

Sennheiser electronic GmbH & Co. KG • D-30900 Wedemark • Tel. 0 51 30 / 600-0
Änderungen vorbehalten / Subject to alterations / Sous réserve de modification

SK 100, SK 300, SK 500

05/00 – 1

TECHNISCHE DATEN

(Werte in Klammern entsprechen typischen Werten)

HF-TEIL

Frequenzaufbereitung ________________________________________ Phase-Locked-Loop (PLL)-Synthesizer
Frequenzbereiche ___________________________________________ 518 ... 550 MHz

630 ... 662 MHz
740 ... 772 MHz
790 ... 822 MHz

838 ... 870 MHz
Schaltbandbreite ____________________________________________ max. 32 MHz
Kanalanzahl _________________________________________________ SK 500: 16; SK 300: 8; SK 100: 4
Frequenzraster ______________________________________________ 25 kHz
HF-Leistung am Antennenausgang ____________________________ 30 mW, -3 dB
Modulationsart ______________________________________________ FM
Nennhub bei 1 kHz NF _______________________________________±24 kHz
Spitzenhub bei 1 kHz NF _____________________________________ ±48 kHz

NF-TEIL

Kompandersystem __________________________________________ HDX
NF-Frequenzgang (bei 1 kHz) __________________________________ 100 Hz ... 16 kHz; -3dB
Klirrfaktor bei 1 kHz und Nennhub _____________________________ < 0,9% (0,5%)
S/N-Verhältnis (A-bewertet) ___________________________________ ≥ 100 dB
S/N-Verhältnis (ohne Expander) ________________________________ ≥ 60 dB
(bei Spitzenhub, NF 1 kHz, Verstärkung -30 dB)
Eingangsempfindlichkeit bei Nennhub

Mikrofon_________________ 19 /38 /120 /390 mV
Gitarre___________________ 0,13 /0,32 /0,7 /2,2 V

Eingangsempfindlichkeit bei Spitzenhub (Klirrfaktor ≤ 3%)

Mikrofon_________________ 60 /120 /380 /1200 mV
Gitarre___________________ 0,4 /1,0 /2,2 /2,4 V

Eingangswiderstand bei 1 kHz NF _____________________________ ≥ 10 kΩ

ALLGEMEIN

Nennspannung ______________________________________________ 9 V
Betriebsspannung ___________________________________________ 6,0 ... 10 V
Stromverbrauch bei Nennspannung ____________________________ ≤ 56 mA (52 mA)
Ruhestromaufnahme ________________________________________ ≤ 100 µA
Batterie ____________________________________________________IEC 6LR61 (PP3,6 AM 6,9V-E-Block Alkaline)
Betriebszeit _________________________________________________ ≥ 8 Stunden (Varta Nr. 4022 oder 8022)
Zulassung __________________________________________________D810 003L RF / FCC ID: DMOB1EURH

SK 100, SK 300, SK 500
05/00 – 2

Änderungen vorbehalten

TECHNICAL DATA

(Values in brackets are typical values)

RF STAGE

RF Generation and control ____________________________________ Phase-Locked-Loop (PLL)-Synthesizer
Frequency ranges____________________________________________ 518 ... 550 MHz

630 ... 662 MHz
740 ... 772 MHz
790 ... 822 MHz

838 ... 870 MHz
Switching bandwidth_________________________________________ max. 32 MHz
Quantity of channels _________________________________________ SK 500: 16; SK 300: 8; SK 100: 4
Channel grid ________________________________________________ 25 kHz
RF Power at antenna output __________________________________30 mW, -3 dB
Modulation _________________________________________________FM
Nominal deviation at 1 kHz AF_________________________________ ±24 kHz
Peak deviation at 1 kHz AF____________________________________ ±48 kHz

AF STAGE

Compander sytem ___________________________________________ HDX
AF-Frequency response (ref. 1 kHz) ____________________________ 100 Hz ... 16 kHz; -3dB
THD at 1 kHz and nominal deviation____________________________ < 0.9% (0.5%)
S/N ratio A-weighted _________________________________________ ≥ 100 dB
S/N ratio excl.expander _______________________________________ ≥ 60 dB
(both ref. peak deviation, AF 1 kHz, gain -30 dB)
Input sensitivity for nominal deviation

mic. _____________________ 19 /38 /120 /390 mV
guit. _____________________ 0.13 /0.32 /0.7 /2.2 V

Peak input (THD ≤ 3%)

mic. _____________________ 60 /120 /380 /1200 mV
guit. _____________________ 0.4 /1.0 /2.2 /2.4 V

Input Resistance at 1 kHz AF__________________________________ ≥ 10 kΩ

GENERAL

Nominal supply voltage_______________________________________ 9 V
Operating voltage ___________________________________________ 6.0 ... 10 V
Current consumption at nominal voltage ________________________ ≤ 56 mA (52 mA)
Stand-by current_____________________________________________ ≤ 100 µA
Battery _____________________________________________________ IEC 6LR61 (PP3.6 AM 6.9V-E-Block Alkaline)
Operating time ______________________________________________ ≥ 8 Hours (Varta No. 4022 or 8022)
Approbation ________________________________________________ D810 003L RF / FCC ID: DMOB1EURH

Subject to alterations

SK 100, SK 300, SK 500

05/00 – 3

SK 100, SK 300, SK 500
05/00 – 4

SK 100, SK 300, SK 500

SIGNALFLUSSZUWEISUNG

INTERCONNECTOR ASSIGNMENT