Sennheiser SK 300 G2 User Manual

SA 280205
Subject to alterations
Sennheiser electronic GmbH & Co. KG • 30900 Wedemark
Phone: +49 (5130) 600 0 • Fax: +49 (5130) 600 300 1/27
SK 100 G2
SK 300 G2
SK 500 G2
Service manual
Short description
The SK x00 G2 bodypack transmitter has 8 channel banks with up to 20
preset channels (presets) and one freely adjustable frequency bank. With a
switching bandwidth of 36MHz 1440 frequencies can be selected in the
UHF band.
Features
• Pilot tone squelch for interference-free operation
• Mute function
• HDX compander system
• Charging contacts integrated in transmitter (does not apply to SK 100 G2)
• Backlighting of display with one keystroke
• Battery status display
• Robust metal housing
• Key-lock function
300
SK 100 G2 SK 300 G2 SK 500 G2

Sennheiser SK 300 G2 Specifications

General

Type	Bodypack Transmitter
Modulation	Wideband FM
Total Harmonic Distortion	< 0.9%
Pilot Tone Frequency	32.768 kHz
Battery Life	Up to 8 hours
Operating Time	8 hours
Dimensions	82 x 64 x 24 mm
RF Output Power	30 mW
Power Supply	2 x AA batteries
Connector	3.5mm mini-jack
Input Connector	3.5 mm jack
Max. Frequency Deviation	± 48 kHz

Summary

Short description

Safety requirements

Controls and indicators

Transmitter Elements

Identifies and describes physical controls and indicators on the transmitter.

Display Elements

Describes symbols and elements shown on the transmitter's display.

Technical Data

General Specifications

Covers power, voltage, dimensions, and compliance details.

AF Characteristics

Details Audio Frequency transmission performance and specifications.

RF Characteristics

Details Radio Frequency transmission performance and specifications.

Exploded View

Test and Alignment Instructions

Measuring and Test Equipment

Lists essential equipment and tools for testing and alignment procedures.

Measuring Set-up

Provides diagrams and descriptions for measurement and alignment setups.

Special Service Tools

Details specialized tools required for service operations and their part numbers.

Test Table

Outlines specific tests, measurements, and required values for device verification.

Reading and Changing Device Data

Procedures for reading/modifying device data using the infrared adaptor.

Circuit Diagrams

Block Diagram

High-level diagram of the transmitter's functional units.

Mainboard Circuit Diagram (Part 1/3)

Detailed schematic of the mainboard, section one of three.

Mainboard Circuit Diagram (Part 2/3)

Detailed schematic of the mainboard, section two of three.

Mainboard Circuit Diagram (Part 3/3)

Detailed schematic of the mainboard, section three of three.

RF Board Circuit Diagram (Part 1/2)

Detailed schematic of the RF board, section one of two.

RF Board Circuit Diagram (Part 2/2)

Detailed schematic of the RF board, section two of two.

Interconnector Assignments

Mainboard Interconnector Assignment (Part 1/2)

Pin assignment for the mainboard's flexible connector, section one of two.

Mainboard Interconnector Assignment (Part 2/2)

Pin assignment for the mainboard's flexible connector, section two of two.

RF Board Interconnector Assignment

Pin assignment for the RF board's connector.

Printed Circuit Board Layouts

Mainboard PCB Component Side

Component layout view of the mainboard's printed circuit board.

Mainboard PCB Solder Side

Solder side view of the mainboard's printed circuit board.

RF Board PCB Component Side

Component layout view of the RF board's printed circuit board.

RF Board PCB Solder Side

Solder side view of the RF board's printed circuit board.