GefenTV GTV-HT-AUDPROCN User Manual

4x1 av processor with amp

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4x1 AV Processor

with Amp

GTV-HT-AUDPROCN

User Manual

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Page 1 4x1 AV Processor with Amp GTV-HT-AUDPROCN User Manual gefentv.com...
Page 3: Asking For Assistance
Write To: Gefen, LLC c/o Customer Service 20600 Nordhoff St Chatsworth, CA 91311 gefentv@gefen.com http://www.gefen.com/gefentv Notice Gefen, LLC reserves the right to make changes in the hard ware, packaging, and any accompanying doc u men ta tion without prior written notice.
Page 4 CONTENTS...
Page 5 The Gefen TV 4x1 AV Processor with Amp The GefenTV 4x1 AV Processor with Amp is a powerful yet compact solution for all of your audio/video needs, offering an easy-to-use alternative to over-complicated Home Theater Receivers.
Page 6 INTRODUCTION READ THESE NOTES BEFORE INSTALLING OR OPERATING THE 4X1 AV PROCESSOR WITH AMP • The Digital Audio Decoder for HDMI has 8 RCA outputs. A maximum of 6 discrete channels of audio can be output via these connectors. 2 connectors are available for bi-amping the front left and right channels.
Page 7 INTRODUCTION Features • Supported HDMI Features: • Resolutions up to 1080p Full HD • HDCP compliant • 12-bit Deep Color • 3DTV pass-through • Lip Sync pass-through • Supported audio formats: up to 5.1 channels of Dolby® Digital, Dolby® Pro Logic, Dolby®...
Page 8 INTRODUCTION Front Panel...
Page 9 INTRODUCTION Front Panel Descriptions This IR receiver will accept commands from the included IR Remote Control Unit. Mute ► This button will cycles between Mute-On and Mute-Off modes. When the Mute-On mode is enabled, all audio output will be ceased. While in the Menu System this button will cycle through available options in the right direction when a feature has been selected for adjustment.
Page 10 INTRODUCTION Back Panel...
Page 11 INTRODUCTION Back Panel Descriptions Bi-Amp FR This pair of connectors is used to bi-amp the Front Right speaker. These speaker binding posts will accept spade lug, banana plug, dual banana plug, bare wire, and pin style connections. Used to connect the Front Right speaker. These speaker binding posts will accept spade lug, banana plug, dual banana plug, bare wire, and pin style connections.
Page 12 INTRODUCTION Optical In Connect an optical cable between this TOSLINK connector and the TOSLINK connector on a digital audio source. Coax In Connect a coax audio cable between this S/PDIF connector and the S/PDIF connector of a digital audio source. RS-232 This port is used to control the unit using serial communications.
Page 13 INTRODUCTION GTV-AUDDEC-NIR IR Remote Control Unit Mute This button cycle between mute on and mute off modes. When mute is applied there will not be any audio output. Mode This button functions the same as the Mode button on the front panel. Enter Conﬁ...
Page 14 INTRODUCTION Coax Press this button to select the S/PDIF audio input source. The current video source will not change. Optical Press this button to select the S/PDIF audio input source. The current video source will not change. HDMI 1234 Press this button cycle between each of the HDMI input sources. The audio output will follow the HDMI source.
Page 15 INTRODUCTION Installing the Battery Remove the battery cover on the back of the IR Remote Control Unit. Insert the included battery into the open battery slot. The positive (+) side of the battery should be facing up. Replace the battery cover. The Remote Control unit ships with two batteries.
Page 16 INTRODUCTION How to Resolve IR Code Conﬂ icts In the event that IR commands from other remote controls interfere with the supplied IR Remote Control unit, changing the IR Remote Control’s IR channel will ﬁ x the problem. The IR Remote Control unit has a bank of DIP switches used for setting the IR channel. The DIP switch bank is located underneath the battery cover.
Page 17: Installation
4x1 AV Processor w/Amp Passive Passiv Passiv Crossover os o HD Display High Pass Passive Crossover R Mid-woofer Powered Subwoofer Low Pass GTV-HT-AUDPROCN Passive Crossover Using built-in amplification L Mid-woofer ATTENTION: This product should always be connected to a grounded electrical socket.
Page 18: Operating The 4X1 Av Processor With Amp
OPERATING THE 4X1 AV PROCESSOR WITH AMP Status Screen The Status Screen displays information regarding the current settings of the Switcher. The Status Screen is also used in conjunction with navigating the built-in Menu System. After powering on the Switcher, the Standby Screen will be displayed. The Standby Screen indicates the currently selected A/V input, the current volume setting, the audio input format, and the audio processing mode: A/V Input...
Page 19 OPERATING THE 4X1 AV PROCESSOR WITH AMP Selecting the Input Source Press the Input ◄ button to cycle through each input source. The table below lists which inputs are active for each selection. A/V Input Displays the currently selected A/V input ...
Page 20 OPERATING THE 4X1 AV PROCESSOR WITH AMP Adjusting the Volume Use the Volume ▲ and Volume ▼ buttons to increase or decrease the audio output gain. The ▲ or ▼ buttons on the IR Remote Control can also be used to control the audio output gain.
Page 21 OPERATING THE 4X1 AV PROCESSOR WITH AMP Changing the Audio Processing Mode Successively press the Mode / OK button on the front panel to cycle through the different audio processing modes. The Mode button on the IR Remote Control can also be used to cycle through the audio modes.
Page 22: Menu System
MENU SYSTEM Using the Menu System The 4x1 AV Processor with Amp comes with a built-in menu system which provides control over additional audio features. The following examples demonstrate some of the more common features of the Switcher. Setting the Speaker Size Adjusting the speaker size determines how each speaker handles low frequency bands.
Page 23 MENU SYSTEM Using the IR Remote Control Press the MENU button. The front-panel display will change to display the Speaker Size menu:   Press the ENTER button. The front-panel display will show the Front Left / Front R speaker size: ...
Page 24 MENU SYSTEM Setting the Speaker Level Modifying the Speaker Level increases or decreases the audio output gain of a speciﬁ c speaker. This feature is useful for equalizing the sound at the listening position. By default, each speaker’s output is set to 0 dB. The output can be adjusted by 1 dB increments between -10 dB and +10 dB.
Page 25 MENU SYSTEM Using the IR Remote Control When using the IR Remote Control, the INFO | TEST TONE button can be used to produce a White Noise test tone in order to adjust the output level. The test tone can also be enabled / disabled via RS-232 (see page 65).
Page 26 MENU SYSTEM Setting the Speaker Distance Changing the speaker distance is necessary for providing the proper audio delay when using the various audio processing modes. The distance for each speaker can be set in 1.5 foot (0.5 meter) increments within a range of 0 feet - 33 feet (10 meters). Speaker distance can be viewed in feet or meters.
Page 27 MENU SYSTEM Using the IR Remote Control From the Standby Screen, press the MENU button. Use the ▲ or ▼ buttons to navi- gate to the Speaker Distance menu:   Press the ENTER button. The front-panel display will show the current distance for the Front Left speaker: ...
Page 28 MENU SYSTEM Adjusting the Tone Control The Tone Control menu allows the adjustment of the treble and bass on the output signal. Treble and bass can be increased or decreased in 1 dB intervals, within a range of -12 dB to +12 dB.
Page 29 MENU SYSTEM Using the IR Remote Control From the Standby Screen, press the MENU button. Use the ▲ or ▼ buttons to navi- gate to the Tone Control menu:   Press the ENTER button. The front-panel display will show the current bass setting. ...
Page 30 MENU SYSTEM Saving Audio Processing Favorites The 4x1 AV Processor with Amp, allows any of ﬁ ve audio processing modes to be associated with a selected input. For example, you may want to associate the Multichannel Stereo audio processing mode with the optical (TOSLINK) input.
Page 31 MENU SYSTEM Using the front-panel buttons Example 1: Assigning the optical (TOSLINK) input with the Multichannel Stereo audio processing mode: From the Standby Screen, press the Menu button. Use the Volume ▲ or Volume ▼ buttons to navigate to the Audio Setup menu: ...
Page 32 MENU SYSTEM Example 2: Assigning the analog L/R inputs with the Dolby Pro Logic II audio processing mode: Starting from Step 5, above, use the Volume ▼ button to navigate to the analog L/R option:      Press the Mute ►...
Page 33 MENU SYSTEM Using the IR Remote Control Example 1: Assigning the optical (TOSLINK) input to use the Multichannel Stereo audio processing mode: From the Standby Screen, press the MENU button. Use the ▲ or ▼ button to navi- gate to the Audio Setup menu: ...
Page 34 MENU SYSTEM Example 2: Assigning the analog L/R inputs to use the Dolby Pro Logic II audio processing mode: Starting from Step 5, on the previous page, use the ▼ button to navigate to the analog L/R option:    ...
Page 35 MENU SYSTEM Dynamic Range Compression Dynamic Range Compression (DRC) applies compression to the output signal, preventing the signal from becoming too loud. This function only affects Dolby audio and not PCM. The default setting for Dynamic Range Compression is OFF. Using the front-panel buttons From the Standby screen, press the Menu button.
Page 36 MENU SYSTEM Using the IR Remote Control From the Standby screen, press the MENU button. Use the ▲ or ▼ buttons to navigate to the Audio Setup menu.   Press the ENTER button. Use the ▲ or ▼ buttons to select the DRC option: ...
Page 37 MENU SYSTEM Audio Enhancement Modes The 4x1 AV Processor with Amp provides four distinct audio enhancement modes. Each of these modes provide a different audio listening experience. Available Modes Mode Description Increases the volume of quiet passages, while decreasing the volume of loud passages. Similar to DRC but works with ...
Page 38 MENU SYSTEM Press the ◄ or ► button to change to change the audio enhancement mode. In the illustration below, the audio enhancement mode has been set to Night mode:   Press the Exit button to save the changes and return to the Audio Setup menu. ...
Page 39 MENU SYSTEM Setting the Unit of Measurement When adjusting the speaker distance, either feet or meters can be speciﬁ ed. Using the front-panel buttons From the Standby Screen, press the Menu button. Use the Volume ▲ or Volume ▼ buttons to navigate to the Misc Setup menu. ...
Page 40 MENU SYSTEM Using the IR Remote Control From the Standby Screen, press the MENU button. Use the ▲ or ▼ buttons to navi- gate to the Misc Setup menu.   Press the ENTER button. The front-panel display will show the current distance for the Front Left speaker: In the illustration below, the current unit of measure is set to meters.
Page 41 MENU SYSTEM Setting the EDID Mode The 4x1 AV Processor with Amp has three EDID modes (INT, EXT, and MIX). • INT Mode The internal (local) EDID is used instead of the EDID from the display device. EDID features newer than HDMI 1.3 are removed from the EDID data structure when the display is read.
Page 42 MENU SYSTEM Using the IR Remote Control To set the EDID mode, press the MENU button from the Standby screen. Use the ▲ or ▼ buttons to navigate to the Misc Setup menu.   Press the ENTER button. Use the ▲ or ▼ button to select the EDID adjustment menu. In the illustration below, the internal (INT) EDID is being used.
Page 43 MENU SYSTEM Setting the IR Channel When controlling the 4x1 AV Processor with Amp using the IR Remote Control Unit, the IR channel on the Switcher must be the same as the IR channel set on the IR Remote Control Unit.
Page 44 MENU SYSTEM Using the IR Remote Control From the Standby screen, press the MENU button. Use the ▲ or ▼ button to navigate to the Misc Setup menu.    Press the Mode / OK button. Use the ▲ or ▼ button to select the IR channel menu. In the illustration below, the IR channel for the Switcher is set to 1.
Page 45 MENU SYSTEM Resetting the Switcher to Factory Settings If the Switcher needs to be reset for any reason or if you need to set the unit to factory (default) settings, follow the instructions below. Using the front-panel buttons From the Standby screen, press the Menu button. Use the Volume ▲...
Page 46 MENU SYSTEM Using the IR Remote Control From the Standby screen, press the MENU button. Use the ▲ or ▼ buttons to navigate to the Misc Setup menu.   Press the ENTER button. Use the ▲ or ▼ buttons to select the Factory Defaults option. ...
Page 47: Rs-232 Serial Control
RS-232 SERIAL CONTROL RS-232 Interface RS-232 Controller 4x1 AV Processor Only TXD, RXD, and GND are used. RS232 Settings Baud rate ........................19200 Data bits ..........................8 Parity bits ........................None Stop bits ..........................1 Flow Control ........................None IMPORTANT: When sending RS-232 commands, a carriage return must be included at the end of the command.
Page 48: Rs-232 Serial Commands
RS-232 SERIAL COMMANDS Commands Command Description Selects between S/PDIF, TOSLink, or Analog audio input AUDIO Increases or decreases the bass BASS Sets the size of the Center speaker Sets the distance for the Center speaker Sets the distance for the Front Left speaker Sets the Switcher to factory (default) settings DFLT Sets the distance for the Front Right speaker...
Page 49 RS-232 SERIAL COMMANDS AUDIO Command The AUDIO command assigns the external audio input. The AUDIO command does not have any effect on the video input. See page 54 for information on changing the video source. Syntax AUDIO param1 Parameters: Port [0 ...
Page 50 RS-232 SERIAL COMMANDS BASS Command The BASS command sets the bass level. Syntax BASS param1 Parameters: Level [-12 ...12] param1 Returns: BASS value Value Meaning -12 ... +12 Bass level Notes: The + or - character can also be used, instead of specifying a value, in order to increase or decrease the bass level by 1 dB.
Page 51 RS-232 SERIAL COMMANDS CT Command The CT command sets the state of the Center speaker. Syntax CT param1 Parameters: State [0 ... 2] param1 Value Meaning Small Center speaker Large Center speaker Returns: CT param1 param1 Meaning Small Center speaker Large Center speaker Center Speaker OFF Notes:...
Page 52 RS-232 SERIAL COMMANDS DC Command The DC command sets the distance of the Center speaker. Syntax DC param1 Parameters: Distance [0 ... 20] param1 Returns: DC param1 Notes: Distance is measured in feet. Use ? for param1 to retrieve the current value. DFL Command The DFL command sets the distance of the Front Left speaker.
Page 53 RS-232 SERIAL COMMANDS DFLT Command The DFLT command sets the unit to the default settings. Syntax DFLT 1 Parameters: None Returns DFLT Notes: The value of 1 must be speciﬁ ed as a parameter. DFR Command The DFR command sets the distance for the Front Right speaker. Syntax DFR param1 Parameters:...
Page 54 RS-232 SERIAL COMMANDS DRC Command The DRC command enables or disables Dynamic Range Control. Syntax DRC param1 Parameters: Value param1 Value Meaning Turn DRC OFF Turn DRC On Returns: DRC param1 param1 Meaning DRC +00 DRC is OFF DRC +01 DRC is ON Notes: Use ? for param1 to retrieve the current value.
Page 55 RS-232 SERIAL COMMANDS DSB Command The DSB command sets the distance for the Subwoofer. Syntax DSB param1 Parameters: Distance [0 ... 20] param1 Returns: DSB param1 Notes: Distance is measured in feet. Use ? for param1 to retrieve the current value. DSL Command The DSL command sets the distance for the Surround Left speaker.
Page 56 RS-232 SERIAL COMMANDS DSR Command The DSR command sets the distance for the Surround Right speaker. Syntax DSR param1 Parameters: Distance [0 ... 20] param1 Returns: DSR param1 Notes: Distance is measured in feet. Use ? for param1 to retrieve the current value.
Page 57 RS-232 SERIAL COMMANDS EDID Command The EDID command sets the EDID mode. Syntax EDID param1 Parameters: Mode [0 ... 2] param1 Value Meaning EDID Mix Internal EDID External EDID Returns: EDID param1 param1 Meaning EDID +00 Mix Mode EDID +01 Internal EDID Mode EDID +02 External EDID Mode...
Page 58 RS-232 COMMANDS ENH Command The ENH command sets the audio enhancement mode. Syntax ENH param1 Parameters: Mode [0 ... 20] param1 Value Meaning Night Mode Voice Mode Volume Mode Audio Enhance OFF Returns: ENH Value Value Meaning ENH +00 Night Mode ENH +01 Voice Mode ENH +02...
Page 59 RS-232 COMMANDS FLR Command The FLR command sets the size for the Front Left / Front Right speakers. Syntax FLR param1 Parameters: Size [0 ... 1] param1 Value Meaning Small Front Speakers Large Front Speakers Returns: FLR Value Value Meaning Small Front Speakers Large Front Speakers Notes:...
Page 60 RS-232 SERIAL COMMANDS HDMI Command The HDMI command sets the active HDMI input. The HDMI command does not have any effect on the audio input. See page 44 for information on changing the audio source. Syntax HDMI param1 Parameters: Input [1 ...
Page 61 RS-232 SERIAL COMMANDS HELP Command The HELP command lists the RS-232 command set. Syntax HELP ? Parameters: None Notes: The ? character must be speciﬁ ed as a parameter. INFO Command The INFO command returns hardware and ﬁ rmware version. Syntax INFO ? Parameters:...
Page 62 RS-232 SERIAL COMMANDS INTYPE Command The INTYPE command returns the audio input format. Syntax INTYPE ? Parameters: None Returns: [0 ... 4] Value Value Meaning None PCM 2.1 PCM 5.1 Dolby Digital 2.1 Dolby Digital 5.1 Notes: The ? character must follow the command.
Page 63 RS-232 SERIAL COMMANDS IR Command The IR command sets the IR channel for the Switcher. Syntax IR param1 Parameters: Channel [0 ... 3] param1 Input Meaning IR Channel 1 IR Channel 2 IR Channel 3 IR Channel 4 Returns: IR Value Value Meaning IR Channel 1...
Page 64 RS-232 SERIAL COMMANDS MD Command The MD command sets the audio mode. Syntax MD param1 Parameters: Mode [0 ... 4] param1 Mode Meaning Pro Logic Surround Direct Input Downmix to Stereo L/R Multichannel Surround Downmix to Mono Returns: MD param1 Mode Meaning Pro Logic Surround...
Page 65 RS-232 SERIAL COMMANDS MUTE Command The MUTE command sets the audio mode. Syntax MUTE param1 Parameters: Mode [0 ... 3] param1 Mode Meaning Disable mute Volume set to minimum Mute toggle Returns: Using RS-232, the following values are returned Value Meaning MUTE +00 Mute is OFF...
Page 66 RS-232 SERIAL COMMANDS PWR Command The PWR command turns the Scaler ON or OFF. Syntax PWR param1 Parameters: Mode [0 ... 2] param1 Mode Meaning Power save mode Power On Toggle power state Returns: Using RS-232, the following values are returned Value Meaning PWR +00...
Page 67 RS-232 SERIAL COMMANDS SLR Command The SLR command sets the size of the Surround Left / Surround Right speakers. Syntax SLR param1 Parameters: Size [0 ... 2] param1 Size Meaning Small Surround speakers Large Surround speakers Disable Surround speakers Returns: SLR value Value Meaning...
Page 68 RS-232 SERIAL COMMANDS STAT Command The STAT command enables or disables auto status feedback. Syntax STAT param1 Parameters: Mode [0 ... 1] param1 Mode Meaning Auto Status Off Auto Status On Returns: STAT value Value Meaning Auto Status Off Auto Status On Notes: Use ? for param1 to retrieve the current value.
Page 69 RS-232 SERIAL COMMANDS SUB Command The SUB command enables or disables the subwoofer. Syntax SUB param1 Parameters: Mode [0 ... 1] param1 Mode Meaning Subwoofer Off Subwoofer On Returns: SUB value Value Meaning Auto Status Off Auto Status On Notes: Use ? for param1 to retrieve the current value.
Page 70 RS-232 SERIAL COMMANDS SUBV Command The SUBV command sets the volume level of the Subwoofer. Syntax PWR param1 Parameters: Range [-12 ... 12] param1 Returns: SUBV value Value Meaning -12 ... +12 Subwoofer volume Notes: The + or - character can also be used, instead of specifying a value, in order to increase or decrease the subwoofer level by 1 dB intervals.
Page 71 RS-232 SERIAL COMMANDS TEST Command The TEST command plays a test tone to speciﬁ ed speaker zone Syntax TEST param1 Parameters: Zone [0 ... 6] param1 Zone Meaning Test tone to Front Left Test tone to Center Test tone to Front Right Test tone to Surround Right Test tone to Surround Left Test tone to Subwoofer...
Page 72 RS-232 SERIAL COMMANDS TREB Command The TREB command sets the treble level. Syntax TREB param1 Parameters: Range [-12 ... 12] param1 Returns: TREB value Value Meaning -12 ... +12 Treble setting Notes: The + or - character can also be used, instead of specifying a value, in order to increase or decrease the treble level by 1 dB intervals.
Page 73 RS-232 SERIAL COMMANDS TVTYPE Command The TVTYPE command sets the video broadcast format. Syntax TVTYPE param1 Parameters: Format [0 ... 1] param1 Format Meaning NTSC format PAL format Returns: TVTYPE value Value Meaning NTSC format PAL format Notes: Use ? for param1 to retrieve the current value.
Page 74 RS-232 SERIAL COMMANDS VOL Command The VOL command sets the overall output volume level. Syntax VOL param1 Parameters: Range [-60 ... 12] param1 Returns: VOL value Value Meaning -60 ... +12 Volume level Notes: The + or - character can also be used, instead of specifying a value, in order to increase or decrease the volume level by 1 dB intervals.
Page 75: Menu System Summary
MENU SYSTEM SUMMARY Main Menu   Mode / OK ▲ ▲   ▲ ▲ Exit ▲ ▲   ▲ ▲ Exit ▲ ▲   ▲ ▲ Exit ▲ ▲   ▲ ▲ Exit ▲ ▲ ...
Page 76 MENU SYSTEM SUMMARY Exit ▲ ▲   Exit ▲ ▲...
Page 77 MENU SYSTEM SUMMARY Speaker Size Menu   Mode / OK ▲ ▲   ▲ ▲ Exit ▲ ▲   ▲ ▲ Exit ▲ ▲   ▲ ▲ Exit ▲ ▲   ▲ ▲ Exit ▲ ▲ ...
Page 78 MENU SYSTEM SUMMARY Speaker Level Menu   Mode / OK ▲ ▲   ▲ ▲ Exit ▲ ▲    ▲ ▲ Exit ▲ ▲    ▲ ▲ Exit ▲ ▲   ▲ ▲ Exit ▲...
Page 79 MENU SYSTEM SUMMARY Exit ▲ ▲   ▲ ▲ Exit ▲ ▲   Exit ▲ ▲...
Page 80 MENU SYSTEM SUMMARY Speaker Distance Menu   Mode / OK ▲ ▲   ▲ ▲ Exit ▲ ▲    ▲ ▲ Exit ▲ ▲    ▲ ▲ Exit ▲ ▲   ▲ ▲ Exit ▲...
Page 81 MENU SYSTEM SUMMARY Exit ▲ ▲   ▲ ▲ Exit ▲ ▲   Exit ▲ ▲...
Page 82 MENU SYSTEM SUMMARY Tone Control Menu   Mode / OK ▲ ▲   ▲ ▲ Exit ▲ ▲    ▲ ▲ Exit ▲ ▲    Exit ▲ ▲...
Page 83 MENU SYSTEM SUMMARY Audio Setup Menu   Mode / OK ▲ ▲   ▲ ▲ Exit ▲ ▲   ▲ ▲ Exit ▲ ▲      ▲ ▲ Exit ▲ ▲   ▲ ▲ Exit ▲...
Page 84 MENU SYSTEM SUMMARY Exit ▲ ▲   ▲ ▲ Exit ▲ ▲    ▲ ▲ Exit ▲ ▲      ▲ ▲ Exit ▲ ▲   ▲ ▲ Exit ▲ ▲   Exit ▲...
Page 85 MENU SYSTEM SUMMARY Misc Setup Menu   Mode / OK ▲ ▲   ▲ ▲ Exit ▲ ▲   ▲ ▲ Exit ▲ ▲     ▲ ▲ Exit ▲ ▲   ▲ ▲ Exit ▲...
Page 86 MENU SYSTEM SUMMARY Exit ▲ ▲   Exit ▲ ▲...
Page 87: Specifications
SPECIFICATIONS Maximum Pixel Clock ................225 MHz Power Ampliﬁ er Channels..................7 Power Output......................• 25W RMS per channel into 8 ohms • 50W RMS per channel into 4 ohms HDMI Inputs ..............(2) Type A 19-pin, female HDMI Outputs ............ (2) Type A 19-pin, female, locking IR Extender..............
Page 88: Warranty
WARRANTY Gefen warrants the equipment it manufactures to be free from defects in material and workmanship. If equipment fails because of such defects and Gefen is notiﬁ ed within two (2) years from the date of shipment, Gefen will, at its option, repair or replace the equipment, provided that the equipment has not been subjected to mechanical, electrical, or other abuse or modiﬁ...
Page 90 Rev A2 20600 Nordhoff St., Chatsworth CA 91311 1-800-545-6900 818-772-9100 fax: 818-772-9120 www.gefen.com/gefentv support@gefentv.com This product uses UL listed power supplies.