Sennheiser SKM 500, SKM 300, SKM 100 Service Manual [en, de]

Service

SKM 100
SKM 300
SKM 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

SKM 100, SKM 300, SKM 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 _________________________________________________ SKM 500: 16, SKM 300: 8; SKM 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

ALLGEMEIN

Nennspannung ______________________________________________ 9 V
Betriebsspannung ___________________________________________ 6,0 ... 10 V
Stromverbrauch bei Nennspannung ____________________________ ≤ 56 mA (52 mA)
Ruhestromaufnahme ________________________________________ ≤ 100 µA
Batterie ____________________________________________________IEC 6 LR 61 (9V Block Alkaline)
Betriebsdauer _______________________________________________ ≥ 8 Stunden (Varta Nr. 4022 oder 8022)
Zulassung __________________________________________________D810 002L RF / FCC ID: DMOH1EURH

SKM 100, SKM 300, SKM 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 _________________________________________ SKM 500: 16, SKM 300: 8; SKM 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 system __________________________________________ 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 A-weighted _____________________________________________≥ 100 dB

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 6 LR 61 (9V Block Alkaline)
Operating time ______________________________________________ ≥ 8 Hours (Varta No. 4022 or 8022)
Approbation ________________________________________________ D810 002L RF / FCC ID: DMOH1EURH

Subject to alterations

SKM 100, SKM 300, SKM 500

05/00 – 3

SKM 100, SKM 300, SKM 500
05/00 – 4

SKM 100, SKM 300, SKM 500

SIGNALFLUSSZUWEISUNG

INTERCONNECTOR ASSIGNMENT