Yamaha YSP-800 User Manual

YAMAHA ELECTRONICS CORPORATION, USA 6660 ORANGETHORPE AVE., BUENA PARK, CALIF. 90620, U.S.A.
YAMAHA CANADA MUSIC LTD. 135 MILNER AVE., SCARBOROUGH, ONTARIO M1S 3R1, CANADA
YAMAHA ELECTRONIK EUROPA G.m.b.H. SIEMENSSTR. 22-34, 25462 RELLINGEN BEI HAMBURG, GERMANY
YAMAHA ELECTRONIQUE FRANCE S.A. RUE AMBROISE CROIZAT BP70 CROISSY-BEAUBOURG 77312 MARNE-LA-VALLEE CEDEX02, FRANCE
YAMAHA ELECTRONICS (UK) LTD. YAMAHA HOUSE, 200 RICKMANSWORTH ROAD WATFORD, HERTS WD18 7GQ, ENGLAND
YAMAHA SCANDINAVIA A.B. J A WETTERGRENS GATA 1, BOX 30053, 400 43 VÄSTRA FRÖLUNDA, SWEDEN
YAMAHA MUSIC AUSTRALIA PTY, LTD. 17-33 MARKET ST., SOUTH MELBOURNE, 3205 VIC., AUSTRALIA
©
2005 All rights reserved.
Printed in Malaysia WF72220
YSP-800
Digital Sound Projector
OWNER’S MANUAL
UB
This product mainly uses lead-free solder.
YSP-800_UB-cv.fm Page 1 Monday, July 25, 2005 11:15 AM

Yamaha YSP-800 Specifications

General

Brand	Yamaha
Model	YSP-800
Category	Projector
Language	English

Summary

Important Safety Instructions

Graphical Symbols and General Safety

Explains warning symbols and provides 14 essential safety guidelines for operation and handling.

FCC Information and Hearing Safety

Compliance, Modifications, and Cables

Explains FCC compliance, warns against modifications, and advises on using specified cables.

Responsible Listening Recommendations

Advises avoiding prolonged exposure to excessive volume levels to protect hearing.

Operating and Installation Cautions

Environmental and Placement Precautions

Details safe installation and operating environment, avoiding hazards like heat, moisture, and improper placement.

Maintenance and Service Guidelines

Specifies user responsibilities regarding cleaning, cord protection, servicing, and troubleshooting checks.

Product Overview

Surround Sound Technology

Describes the unit's approach to surround sound, reflecting beams off walls for an immersive experience.

Speaker Beam Projection Explained

Details how sound beams are projected to create 5.1 channel surround sound by reflecting off room walls.

Key Features

Digital Sound Projector Technology

Highlights the unit's ability to create full 5.1 channel surround sound from a single unit, eliminating multiple speakers.

Cinema DSP Digital Technology

Describes YAMAHA's Cinema DSP Digital technology for dramatic movie sound impact.

On-Screen Display (OSD) Functionality

Details the OSD's function for displaying system information and adjusting parameters on the TV screen.

Versatile Remote Control Capabilities

Covers the remote's ability to control multiple components and use macro functions for simplified operations.

Automatic Sound Optimization (YPAO)

Describes the YPAO technology for automatic sound beam optimization based on the listening environment.

Modern Audio Format Compatibility

Lists compatibility with Dolby Digital, DTS, Dolby Pro Logic, and DTS Neo:6 technologies.

Guide to Using This Manual

Manual Structure and Operation Tips

Provides guidance on connecting, operating, and using the manual, including tips and notes on design changes.

Included Accessories

List of Supplied Parts

Details all the parts included with the YSP-800 unit, such as remote control, microphone, and cables.

Front Panel Controls

Input Selection and Volume Adjustment

Explains the INPUT button for source selection and VOLUME buttons for level adjustment on the front panel.

Power Control and Display Panel

Details the STANDBY/ON button for power control and the front panel display for operational status.

Microphone Jack and Remote Sensor

Explains the OPTIMIZER MIC jack for setup and the remote control sensor for signal reception.

Front Panel Display Indicators

Status and Decoder Indicators

Describes indicators like NIGHT, SLEEP, and decoder status lights on the front panel.

Volume and Information Displays

Details the volume level indicator and the multi-information display for parameter adjustments.

Rear Panel Connections

Audio and Digital Input/Output Jacks

Lists and describes audio input jacks (VCR, TV/STB), digital input jacks (TV/STB Optical, AUX Optical, DVD Coaxial), and audio output (Subwoofer Out).

Video Output and System Connectors

Explains the VIDEO OUT jack for OSD and the SYSTEM CONNECTOR jack for compatible subwoofers.

AC Power Supply Connection

Details the AC power supply cable connection to the wall outlet.

Remote Control Functions

Basic Operation Buttons

Explains buttons for power, input selection, volume adjustment, and muting the sound.

Mode and Program Selection Buttons

Details buttons for switching operation modes, selecting beam modes, and choosing sound field programs.

Navigation and Setup Controls

Explains buttons for navigating menus, accessing setup, testing, and returning to previous screens.

External Component Control Buttons

Describes buttons for controlling external components like TVs, DVD players, and VCRs.

Remote Control Buttons (Continued)

Macro and Input Mode Functions

Explains buttons for setting macros and switching input modes (AUTO, DTS, ANALOG).

Timer and Surround Mode Settings

Details buttons for setting the sleep timer, volume modes, and surround modes for playback.

Menu and TV Control Buttons

Explains buttons for accessing menus, controlling TV volume, and changing TV channels.

TV Mute and Code Set Functions

Describes buttons for muting TV audio and setting remote control codes for external components.

Installation Location Guidelines

Optimizing Surround Sound Placement

Advises on room characteristics and placement to achieve optimal surround sound effects by reflecting sound beams.

Ventilation and Obstruction Avoidance

Stresses the importance of adequate ventilation space and keeping sound beam paths clear of furniture.

Parallel vs. Corner Installation Methods

Describes parallel and corner installation methods, noting beam mode availability differences.

Installation Methods

Detaching Rear Panel Packaging Apparatus

Details how to detach a metal apparatus from the rear panel used for packing purposes.

Wall Mounting Bracket Installation

Describes using an optional metal wall mount bracket to secure the unit to a wall.

Stand and Rack Installation Options

Guides on installing the unit using a commercially available stand or rack, either above or under a TV.

Securing the Unit Installation

Using Fasteners for Stability

Details the process of using supplied fasteners to secure the unit to a rack or stand, emphasizing surface preparation.

Connecting External Components

Connection Options Overview

Outlines the available digital and analog jacks for connecting various external components like TVs, DVD players, and subwoofers.

General Connection Safety Caution

Advises not to connect power until all component connections are complete.

Connecting a TV

TV Audio Connection Methods

Shows how to connect TV audio via analog and optical digital jacks, noting digital priority.

TV Video Connection for OSD

Details the video connection required to display the unit's OSD on the TV screen.

Connecting a DVD Player/Recorder

DVD Coaxial Digital Connection

Guides on connecting a DVD player via coaxial digital output to the unit's coaxial input.

DVD Optical Digital Alternative Connection

Suggests using an optical digital connection if the DVD player lacks a coaxial output.

Connecting a VCR

VCR Analog Audio Connection

Details the analog audio connection for a VCR using red and white audio pin cables.

Connecting Satellite/Cable TV Tuners

Tuner Optical Digital and Analog Audio Inputs

Shows how to connect digital satellite or cable TV tuners using optical digital and analog audio inputs.

Analog Audio Connection for Tuners

Notes that analog audio jacks should be used if TV/tuner do not support digital broadcasting.

Connecting Other External Components

External Component Optical Digital Connection

Guides connecting external components like game consoles via optical digital output to the AUX OPTICAL jack.

Cable Management with Supplied Clamp

Explains how to use the supplied cable clamp to secure optical fiber cables for prevent unplugging.

Connecting a Subwoofer

Subwoofer Monaural Audio Output Connection

Details connecting a subwoofer to the SUBWOOFER OUT jack using a monaural pin cable.

Yamaha Subwoofer System Connector

Describes connecting compatible YAMAHA subwoofers via the SYSTEM CONNECTOR jack for integrated power control.

Connecting the Power Supply

Final AC Power Connection

Instructs to plug the power supply cable into the AC wall outlet after all other connections are complete.

Getting Started: Remote Control Setup

Installing Remote Control Batteries

Provides step-by-step instructions for inserting batteries into the remote control, noting polarity.

Remote Control Operation Range and Notes

Details the effective operating range and directionality for the remote control, along with usage notes.

Using the Remote Control

Input Source Selection with Remote

Describes how to select input sources (TV, STB, VCR, DVD, AUX) using input selector buttons.

Powering the Unit On and Off

Details how to turn the unit on and off using the STANDBY/ON button, noting standby mode behavior.

Using the Set Menu: Displaying OSD

Connecting TV for OSD Display

Instructs to connect the TV to the unit's VIDEO OUT for OSD display and select the correct TV input.

Activating the On-Screen Display

Details pressing the TV button on the remote to display the OSD, with notes on potential delays or input switching.

Set Menu Setup Flowchart

AUTO SETUP Procedure Overview

Outlines the sequence for AUTO SETUP, including error handling and remedies.

Basic and Manual Setup Paths

Guides on running BASIC SETUP if AUTO SETUP fails, and MANUAL SETUP for fine-tuning.

Automatic Sound Optimization (AUTO SETUP)

Understanding AUTO SETUP Technology

Describes how YPAO technology optimizes sound by checking room environment, subwoofer, beam angle, and audio levels.

AUTO SETUP Procedure Flowchart

Illustrates the sequence of checks for optimizing beam angle, delay, volume, and quality.

Optimizer Microphone Setup

Microphone Connection and Placement Guidelines

Guides on connecting and positioning the optimizer microphone correctly for accurate sound analysis.

Ensuring Proper Microphone Placement

Provides detailed rules for microphone placement to avoid errors and ensure optimal results.

Assembling and Initiating AUTO SETUP

Cardboard Microphone Stand Assembly

Details how to assemble the supplied cardboard microphone stand for positioning the optimizer microphone.

Starting the AUTO SETUP Procedure

Guides on starting the AUTO SETUP procedure after connecting and placing the optimizer microphone.

Troubleshooting AUTO SETUP Errors

Error Messages Before Setup Start

Lists potential error messages before AUTO SETUP starts and their remedies, like checking MIC connection.

Error Messages During Setup Process

Lists errors occurring during AUTO SETUP (e.g., quiet environment, MIC issues) and provides solutions.

Configuring AUTO SETUP Options

Selecting Optimization Modes

Describes choices: BEAM OPT+SOUND OPTIMZ, BEAM OPTIMZ only, SOUND OPTIMZ only, and their use cases.

Setting Unit Installation Position

Guides on selecting the installed position (Parallel to Wall, Angle to Wall/Corner) for sound beam optimization.

AUTO SETUP: Mounting and Reflectivity Settings

Selecting Mounting Position

Instructs to select WALL or SHELF mounting based on the unit's installation location.

Setting Listening Room Reflectivity

Guides on setting room reflectivity (NORMAL or HI ECHO) to optimize sound based on room acoustics.

AUTO SETUP Results and Confirmation

Reviewing AUTO SETUP Results

Explains how to view the results of the AUTO SETUP procedure, including beam mode and subwoofer status.

Confirming or Cancelling Setup

Details how to confirm the settings by pressing ENTER or cancel the procedure using the RETURN button.

System Memory: Saving Settings

Saving Current Configuration to Memory

Guides on saving the current unit settings to system memory (USER1, USER2, USER3) for different listening environments.

System Memory: Loading Settings

Recalling Saved Configurations

Details how to load previously saved settings (USER1, USER2, USER3) to recall configurations for varying listening conditions.

Playback: Selecting Input Sources

Switching Between Input Sources

Explains how to select input sources (TV, STB, VCR, DVD, AUX) using front panel or remote control buttons.

Playback: Playing Sources

Initiating Source Playback

Guides on turning on the source component and selecting it as input to play back audio and video.

Adjusting Volume Levels

Details how to increase or decrease the unit's volume level using the front panel or remote control.

Playback: Muting Sound

Temporary Sound Muting Function

Describes how to mute and unmute the audio output using the MUTE button on the remote control.

Beam Mode Selection

Understanding Beam Mode Availability

Lists cases where all beam modes are available versus limited modes, depending on installation and setup choices.

Beam Mode Options Overview

Provides a table outlining beam modes (STEREO, 3BEAM, 5BEAM, ST+3BEAM, TARGET) and their availability.

Beam Modes: 5 Beam and Stereo Plus 3 Beam

5 Beam Mode Configuration

Details the 5 beam mode, ideal for multi-channel DVDs or 2-channel sources in multi-channel format.

Stereo Plus 3 Beam Mode Configuration

Describes the Stereo Plus 3 Beam mode, suitable for live recordings, vocals, and instrumental sounds.

Beam Modes: 3 Beam and Stereo

3 Beam Mode Configuration

Explains the 3 Beam mode, ideal for family movie enjoyment with a widened listening area.

Stereo Mode Configuration

Details the Stereo mode, suitable for hi-fi sources like CDs or replacing TV speakers.

Beam Mode: Target Mode

Target Mode Functionality

Describes the Target mode for single-channel output, ideal for quiet listening or clear dialogue, with adjustable horizontal angle.

Enjoying Surround Sound: Decoder Indicators

Input Source and Decoder Status Indicators

Explains how front panel decoder indicators (PCM, DTS, DIGITAL, PL) light up based on input source and selected mode.

Surround Sound Modes and Sources

Surround Mode Recommendations

Lists recommended source types (All sources, Movies, Music) for Dolby Pro Logic and DTS Neo:6 surround modes.

Surround Mode Availability Notes

Provides important notes on when surround modes are available, including beam mode and CINEMA DSP program restrictions.

Enjoying Surround Sound: 2-Channel Sources

Switching Surround Modes

Guides on switching between surround modes (PRO LOGIC, PL II, Neo:6) using the SURROUND button.

Enjoying Surround Sound: TV Audio

Connecting TV for Surround Sound

Details how to connect TV audio signals for playback in real surround sound.

Adjusting Volume and Surround Mode for TV

Guides on adjusting unit volume and selecting a surround mode for TV audio.

Adjusting Surround Mode Parameters

Configuring Dolby Pro Logic II Parameters

Details how to adjust parameters like PANORAMA, DIMENSION, and CT WIDTH for Dolby Pro Logic II Music.

Configuring DTS Neo:6 Parameters

Explains how to adjust the C. IMAGE parameter for DTS Neo:6 Music to fine-tune the surround sound.

Using Sound Field Programs

Understanding Sound Field Concepts

Explains the concept of sound fields, combining direct sound and reflections to create acoustic environments.

Elements of a Sound Field

Describes sound field components: early reflections and reverberations, and their impact on perceived space.

Sound Field Programs: Turning On

Selecting Music Sound Field Program

Guides on selecting the MUSIC program for vibrant atmosphere during music playback.

Selecting Movie Sound Field Program

Guides on selecting the MOVIE program for cinematic sound effects during movie playback.

Selecting Sports Sound Field Program

Guides on selecting the SPORTS program for concentrated commentator audio and ambient sound.

Sound Field Programs: Turning Off

Disabling Sound Field Programs

Details how to turn off CINEMA DSP programs to enjoy the original sound without effects.

Sound Field Programs: Adjusting Levels

Fine-Tuning DSP Effect Levels

Guides on adjusting the effect level of CINEMA DSP programs relative to direct sound for personalized environments.

Using Volume Modes

Activating Night Listening Modes

Describes night listening modes (NIGHT:CINEMA, NIGHT:MUSIC, TV EQUAL VOL) for improved low-volume or night listening.

Selecting Volume Mode Options

Details how to select specific night listening modes, including NIGHT OFF to disable them.

Volume Modes: Adjusting Effect Level

Adjusting Compression Effect Level

Guides on adjusting the effect level of compression for NIGHT:CINEMA, NIGHT:MUSIC, or TV EQUAL VOL modes.

Using TruBass Technology

Activating and Deactivating TruBass

Explains how to turn SRS TruBass on or off to enhance low-frequency performance and bass richness.

Using the Sleep Timer

Setting the Sleep Timer

Guides on setting the sleep timer to automatically switch the unit to standby after a specified period.

Canceling the Sleep Timer

Details how to deactivate the sleep timer and confirms its memory storage.

Basic Setup Procedure

Accessing the Set Menu for Setup

Guides on accessing the SET MENU via the remote control to initiate setup procedures.

Initiating Basic Setup Process

Details selecting BASIC SETUP from the SET MENU and starting the configuration process.

Basic Setup: Room Type Configuration

Selecting Room Shape Setting

Guides on selecting the room shape (SQUARE or RECTANGLE) that best matches the listening room's dimensions.

Basic Setup: Installed Position

Selecting Unit Placement Position

Guides on selecting the unit's installed position (LEFT, CENTER, RIGHT, CORNER or WIDE/NARROW variations) based on room type.

Basic Setup: Room Size Configuration

Setting Room Dimensions

Instructs on selecting the room size (SMALL, MID, LARGE) that corresponds to the listening room's dimensions.

Confirming Basic Setup Settings

Details the process of confirming the BASIC SETUP settings and registering them.

Manual Setup for Fine-Tuning

Overview of Manual Setup Menus

Introduces the manual setup options, categorized into SOUND, BEAM, INPUT, and DISPLAY menus for detailed adjustments.

Accessing Manual Setup Options

Navigating Manual Setup Submenus

Guides on navigating through the MANUAL SETUP submenus (SOUND, BEAM, INPUT, DISPLAY) using the remote.

Manual Setup: Beam Menu - Setting Parameters

Adjusting Listening Room Dimensions

Details setting room width, length, and listening position distance for beam optimization.

Selecting Unit Installation Type

Guides on selecting the unit's installation type (FLAT TO WALL or ANGLE TO WALL OR CORNER).

Manual Setup: Beam Menu - Beam Adjustment

Adjusting Horizontal Beam Angle

Guides on adjusting the horizontal angle of sound beams for each speaker to optimize beam paths.

Manual Setup: Beam Menu - Beam Travel Length

Setting Sound Beam Travel Distance

Details setting the distance sound beams travel from output, reflection, to the listening position for each speaker.

Manual Setup: Beam Menu - Focal Length

Adjusting Focal Point of Sound Beams

Guides on setting the focal length for each speaker's sound beam output, with a recommendation for the center speaker.

Manual Setup: Beam Menu - Treble Gain

Adjusting High Frequency Output Levels

Details adjusting the high frequency output level for each speaker, especially useful for absorbent surfaces.

Manual Setup: Beam Menu - Image Location

Directing Sound Signal Direction

Guides on adjusting the direction of front left/right speaker sound, potentially from the center speaker, for unnatural sound sources.

Manual Setup: Sound Menu - Tone Control

Adjusting Speaker Tonal Quality

Details adjusting the tonal quality of speakers by controlling TREBLE and BASS frequencies.

Manual Setup: Sound Menu - Beam Level

Balancing Speaker Levels

Guides on manually balancing speaker levels between front/surround speakers and each individual speaker.

Manual Setup: Sound Menu - Subwoofer Settings

Configuring Bass Output and Crossover

Details BASS OUT settings for directing bass signals and setting the CROSS OVER frequency for subwoofers.

Adjusting LFE Level and Distance

Guides on adjusting LFE channel output level and subwoofer distance for optimal bass reproduction.

Manual Setup: Sound Menu - Mute and Delay

Adjusting Mute Volume Reduction

Details adjusting how much the mute function reduces volume (completely or by 20 dB).

Setting Audio Delay for Synchronization

Guides on setting audio delay to synchronize sound with video, useful for monitors or projectors.

Manual Setup: Sound Menu - Room EQ

Mounting Position Adjustment for EQ

Guides on adjusting room equalization based on mounting type (WALL or SHELF) for optimal sound.

Listening Room Reflectivity Adjustment for EQ

Details adjusting room equalization based on reflectivity type (NORMAL or HI ECHO) for accurate acoustics.

Manual Setup: Sound Menu - Dynamic Range

Adjusting Dolby Digital/DTS Dynamic Range

Guides on selecting dynamic range compression (MIN, STD, MAX) for Dolby Digital and DTS signals.

Manual Setup: Input Menu - Input Assignment

Assigning Digital Input Jacks to Components

Guides on assigning optical and coaxial digital input jacks to specific components for custom naming and operation.

Manual Setup: Input Menu - Input Mode

Selecting Input Signal Type

Details selecting input modes (AUTO, DTS, ANALOG) for digital inputs to match signal type or ensure stability.

Manual Setup: Input Menu - Input Trim

Adjusting Input Signal Levels

Guides on adjusting input signal levels (–6.0 dB to 0.0 dB) for various analog and digital inputs.

Manual Setup: Input Menu - Input Rename

Customizing Input Source Names

Details how to change the displayed name of input sources in the OSD and front panel display.

Manual Setup: Display Menu - Dimmer Settings

Adjusting Front Panel Display Brightness

Guides on adjusting the brightness of the front panel display using STANDARD or AUTO DIMMER settings.

Manual Setup: Display Menu - OSD Settings

Adjusting OSD Position and Color

Details adjusting the vertical OSD position (OSD SHIFT) and background color (OSD BACK COLOR).

Manual Setup: Display Menu - Unit Settings

Changing Measurement Units

Guides on changing the display unit of measurement for speaker distances between METERS and FEET.

Adjusting System Parameters

Setting Maximum Volume Level

Guides on setting a maximum volume limit to prevent excessively loud output.

System Parameters: Protecting Current Settings

Enabling Memory Protection Feature

Details how to enable memory protection to prevent accidental erasure or changes to current settings.

System Parameters: Initializing Settings

Resetting All Parameters to Factory Defaults

Guides on resetting all unit parameters to factory presets, requiring subsequent room setup.

System Parameters: Adjusting Audio Balance

Using Test Tone for Speaker Level Balancing

Explains using the test tone feature to output tones from each speaker for manual volume balancing.

Manually Adjusting Speaker Levels via Test Tone

Guides on selecting speakers and adjusting their volume levels using the test tone feature.

System Parameters: Adjusting Audio Output During Playback

Manually Adjusting Speaker Levels During Playback

Details manually adjusting speaker levels while playing back audio sources like DVDs, using CH LEVEL and VOLUME controls.

Selecting Input Mode

Understanding Input Mode Options

Explains input modes (AUTO, DTS, ANALOG) and their selection criteria based on signal type and preference.

Switching Between Input Modes

Guides on repeatedly pressing INPUTMODE to toggle between available input modes for selected sources.

Remote Control Features: Setting Codes

Programming Remote for External Components

Guides on setting remote control codes to operate other YAMAHA or compatible A/V components.

Remote Control Features: Controlling Components

Operating Your TV with the Remote

Details how to control TV functions like power, channel selection, and volume using the remote.

Operating Your DVD Player with the Remote

Explains how to control DVD player functions such as power, playback, menu navigation, and volume.

Remote Control Features: VCR Operation

Operating Your VCR with the Remote

Details how to control VCR functions like power, channel selection, and playback using the remote.

Remote Control Features: TV Macro

Setting TV Macros for Single-Button Operations

Guides on setting up TV macros to perform sequences of operations with a single button press.

Operating and Canceling Macros

Details how to operate macros and cancel the macro setting procedure.

Troubleshooting Common Issues

Power and Standby Problems

Addresses issues like the unit failing to turn on or suddenly entering standby mode, including causes and remedies.

No Sound or Distorted Sound Issues

Provides solutions for no sound from various speakers, distorted sound, or sudden sound cutoff.

Troubleshooting Sound Effects

Insubstantial Surround Sound Effects

Addresses issues with weak surround sound effects due to room shape or lack of wall reflections.

Dolby Digital/DTS Playback Issues

Troubleshoots problems with Dolby Digital or DTS sources not playing, including input mode and component settings.

Troubleshooting Display and Operation Issues

On-Screen Display (OSD) Problems

Provides solutions for when the OSD does not appear, primarily related to cable connections or TV input selection.

Unit Not Operating Properly

Addresses general unit operation failures, possibly caused by electrical shock or power supply issues.

Troubleshooting the Remote Control

Remote Control Not Working Correctly

Lists causes and remedies for a non-functional or malfunctioning remote control, including distance, angle, and battery issues.

External Component Control Problems

Addresses problems operating external components with the remote, such as incorrect code setup or unselected input sources.

Glossary of Audio Terms

Digital Audio Formats Explained

Defines digital surround sound formats like Dolby Digital, Dolby Pro Logic II, and DTS, including their channel configurations.

Audio Signal Information Explained

Explains audio information such as LFE 0.1 channel for bass signals and PCM for uncompressed audio.

Technical Specifications

Amplifier and Speaker Specifications

Details the amplifier section (output power) and speaker specifications (drivers, frequency response, crossover).

Input/Output Jacks and Connectors

Lists all input and output jacks, including audio, digital, video, and system connectors.

General Unit Specifications

Provides general specifications such as power supply voltage, power consumption, dimensions, and weight.