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

SK 100, SK 300, SK 500

Änderungen vorbehalten / Subject to alterations / Sous réserve de modification

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 µ A

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	Änderungen vorbehalten
05/00 – 2

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 µ A

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

INTERCONNECTOR ASSIGNMENT

SIGNALFLUSSZUWEISUNG

SK 100, SK 300, SK 500

SK 100, SK 300, SK 500 05/00 – 4