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User's Manual
EMX-AMP
HDMI Audio Extractor with 50 Watt Audio
Amplifier, Line Audio Input, RS-232 Ports
EMX-I-AMP
HDMI Audio Extractor with 50 Watt Audio
Amplifier, Line Audio Input, RS-232 Ports
and IP Control (Telnet & Internal Web GUI)
UMA1244 Rev NC
© Copyright 2016. Hall Research, Inc. All rights reserved.
1163 Warner Ave Tustin, CA 92780, Ph: (714)641-6607, Fax (714)641-6698
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Table of Contents
Summary of Contents for HR EMX-AMP
- Page 1 User’s Manual EMX-AMP HDMI Audio Extractor with 50 Watt Audio Amplifier, Line Audio Input, RS-232 Ports EMX-I-AMP HDMI Audio Extractor with 50 Watt Audio Amplifier, Line Audio Input, RS-232 Ports and IP Control (Telnet & Internal Web GUI) UMA1244 Rev NC ©...
- Page 2 HDMI Audio Extractor with Power Amplifier...
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Page 3: Table Of Contents
EMX-AMP Table of Contents 1.0 INTRODUCTION ....................4 2.0 FEATURES ...................... 5 2.1 P ..................5 ACKAGE ONTENTS 3.0 SETUP ......................6 3.1 I ....................6 NSTALLATION 4.0 OPERATION ....................7 4.1 F ....................7 RONT ANEL 4.2 R ....................9 ANEL 4.3 F... -
Page 4: Introduction
HDMI Audio Extractor with Power Amplifier 1.0 Introduction The EMX-AMP is a 4K HDMI Audio Extractor with built-in 50 watt audio amplifier for direct connection of 8 ohm speakers. It provides an additional line-level stereo audio input that can be mixed with the HDMI audio. Volume can be controlled using front panel buttons, RS-232 commands, or via an external rotary digital encoder. -
Page 5: Features
Compact, Rugged, Reliable, and Economical • Made in the USA • 2.1 Package Contents Qty (1) EMX-AMP Qty (1) 18V DC Universal DC Power Adapter Qty (1) User’s Manual Qty (1) Type A to Mini-B USB cable Qty (1) 4 Position Screw Terminal Strip... -
Page 6: Setup
Connect the HDMI display device to the HDMI OUT connector. Note that even if • the HDMI output is disconnected, the EMX-AMP extracts video from the HDMI source. Connect a pair of 8 ohm loudspeakers to the speaker output screw terminals. -
Page 7: Operation
EMX-AMP 4.0 Operation The following is a functional block diagram of the audio routing in the EMX-AMP: Figure 2 – Audio Routing and Processing Diagram 4.1 Front Panel Figure 3 - Front Panel Press this button to turn the unit on and off. When the unit is ON, the LED glows. - Page 8 HDMI Audio Extractor with Power Amplifier Audio Mix Buttons The LINE and HDMI buttons are used to select audio inputs. When both are selected, the audio from each source are added together. LINE Press this button to select the Line input and add it to the output audio. When the Line input is selected, the LED glows.
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Page 9: Rear Panel
When connected to an unbalanced mono source, both tip and ring of the EMX-AMP should be connected to the mono audio. Adapter cables are commercially available. If connecting to a balanced mono source where there are +Sig and -... - Page 10 HDMI Audio Extractor with Power Amplifier HDMI OUT Connect to compatible video sink. (e.g., such as a LCD or Projector). LINE OUT Unbalanced stereo output. Connect to compatible line level audio output devices (e.g., such as headphones) L/R Speaker Outputs Connect 8 or 16 ohm speakers to the 4-position terminal strip, 25 watts per channel maximum.
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Page 11: Factory Default
EMX-AMP RS-232 IN Connect the PC’s RS-232 port to the input of the unit with a 3-pin terminal connector. RS-232 OUT Connect RS-232 out to the controlled device such as a projector using a 3-pin terminal cable. Available on the Model EMX-I-AMP, connect to the compatible LAN network. -
Page 12: Line In Connection
When using wireless (RF or IR based) microphones use the line output of the Microphone receiver to connect to the input of the EMX-AMP. NOTE If nothing is connected to the 3.5mm audio input, it is recommended to unselect the LINE in the audio mix. -
Page 13: Webgui And Telnet Operation
EMX-AMP 5.0 WebGUI and Telnet Operation EMX-I-AMP has a built in webpage that can control the basic functions of this model via LAN. You can power the device on and off, select the Audio Mix, control volume up/down/mute functions, and if you have programmed RS-232 ON and OFF commands of your display, you can also control the power of the TV (or set it for Auto where the commands are automatically sent based on video detection). -
Page 14: Locating The Device On Alan
PA announcement by monitoring the electric current in the wire when an announcement is in progress. When a “Page Sense” signal of sufficient amplitude is detected, the audio output of the EMX-AMP is automatically muted. Figure 13 – Optional Page Sensor Clamp... -
Page 15: Page Sensor Installation
The “Ducking” Threshold and Ratio are settable via the Windows™ Software GUI. 8.0 Mono Output Mix The EMX-AMP has the ability to mix the left and right channels and produce a mono output (where both left and right speakers sound the same). This selection is done via... -
Page 16: Serial Commands
HDMI Audio Extractor with Power Amplifier 9.0 Serial Commands The following table lists the RS-232 commands: • o Each command must be terminated by a single carriage return character (hex 0D). o Invalid input, spaces and line feeds characters (hex 0A) are ignored. RS-232 communication on the RS-232 IN terminal strip is: •... - Page 17 EMX-AMP Command Response Function and Example VCx<CR> Controls sub-circuit gain settings VC?<CR> – Query current volume/gain control setting VC0<CR> -- Line Input Preamp Gain (defaulted to 70%) VC1<CR> -- Reserved (do not use) VC2<CR> -- Reserved (do not use) VC3<CR> -- Overall Output Gain Setting...
- Page 18 HDMI Audio Extractor with Power Amplifier Command Response Function and Example System status Queries system status ST<CR> -- Query the current system status Current Status for the commands below: IP?, SB?, GW?, PW?, LR?, HD?, MUT?, VOL?, MO?, VC?, AU?, AT?, AR?, BP?, ED?, DA?, XC?, XB?, XP? XBx<CR>...
- Page 19 EMX-AMP Command Response Function and Example AUx<CR> Controls AUTO DETECT Mode AU?<CR> – Query current Auto Detect Mode Status AU1<CR> -- Auto Detect Mode Active AU0<CR> -- Auto Detect Mode In-Active (Factory Default) ATx<CR> Controls the Auto Detection Trigger Settings AT?<CR>...
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Page 20: Automatic Power Control Of Display Based On Hdmi Input Detection
1 second to 240 minutes (+/- 10%). 9.3 Device Addressing for special daisy-chain operation The EMX-AMP has the ability to daisy chain the RS-232 IN and RS-232 OUT together with other units where a serial controller at the head of the chain is able to individually control the volume and mute functions of all the units in the chain. -
Page 21: Troubleshooting
Do not open or try to repair the unit yourself as this will void your warranty. To return the device for repair, you must contact HR Support at 714-641-6607 or via email or web. To ship the unit back for repair, make sure to obtain a Return Material Authorization... -
Page 22: Specifications
Formats HDMI Embedded Audio including: LPCM (32-192kHz sample rate) Other Signals DDC from HDMI receiver in the EMX-AMP to the source and from HDMI sink to the HDMI transmitter in the AMP. DDC supports EDID management and HDCP handshake Pass-Thru RS-232 Each RS-232 Port uses 3 pins on the screw terminal. - Page 24 © Copyright 2016. Hall Research, Inc. All rights reserved.
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