User Manual v1.0
Contents
1. Furthermore the same result could not be achieved by just connecting two antennas in parallel either directly or through simple amplifiers The relative phase of the signals from the two antennas would change as the transmitter was moved and cancellation effects would occur at the summing point Antenna Antenna Signal Signal Receiving Strength Strength Receiving Module Module RXA RXB AF Signal Selector Output Output AWDR 1 User Manual V1 0 3 Product Overview TOP VIEW Transmitter Battery Receiver Battery Indicator Indicator RSSI for RXA RSSI for RXB Antenna Antenna Socket A Socket B Audio Output Headphone Socket Monitoring Socket Audio Output Sockets There are two types of Audio Output connectors are available e Large 6 Pin LEMO connector pictured above e Multi way 4 pin connector HR4 Both connectors provide balanced audio output and external dc input connections to the receiver The balanced audio output level is user adjustable from 6dBV to 42dBV to suit varying device input requirements External powering may be done by using dedicated RCP cables Please Note Ensure that P48 is turned off on a mixer camera before connecting it to the AWDR 1 Headphone Monitoring Socket The AWDR 1 has a unique headphone design that auto detects Stereo or Mono Jacks when inserted into the 3 5mm socket and does not cause an electrical short or any loss of audio level The Headphone is user adjust2. Please note Pin 2 amp 3 are balanced audio output signal 2 Large 6 pin L6 LEMO connector ERY 2C 306 CLL Pin 1 AF Pin 2 Unused Pin 3 External Powering with RCP cables Pin 4 Unused Pin 5 OV Ground Pin 6 AF 0 Please Note Please note the above chassis mounted connectors are shown as viewed from the external face whereas the following cable connectors shown are from the solder side Cable End Connectors on O 1 XLR connector NC3MX or Equivalent Pin 1 OV Ground Pin 2 AF 0 O O Pin 3 AF Ground spring Linked to Pin 1 2 Small 4 pin Hirose dc connector HR10 7P 4P Pin 1 OV Ground Pin 2 Unused O Pin 3 Unused Pin 4 External Powering AWDR 1 User Manual V1 0 19 3 Small 4 pin Hirose AF connector HR10 7P 4P Pin 1 OV Ground Pin 2 AF Pin 3 AF Pin 4 External Powering 4 Large 6 pin L6 LEMO connector FFA 2C 306 CLAL52 Pin 1 AF 0 Pin 2 Unused Pin 3 External Powering with RCP cables Pin 4 Unused Pin 5 OV Ground Pin 6 AF d a Standard Receiver Cables Details RC 1HR4 Audio output cable to suit AWDR 1 HR 4 receivers balanced AF output to XLR HR 4 AF RCP 1HR4 Audio output and external powering cable for AWDR 1 HR 4 receivers external powering 10 18 V dc with 4 pin Hirose dc connector with balanced AF output to XLR HR 4 AF HR 4 dc AWDR 1 User Manual V1 0
3. 20 2RCP 1HR4 Dual audio output and external powering cable to power two AWDR 1 HR 4 receivers external powering 10 18 V dc with 4 pin Hirose dc connector with 2x balanced AF output to XLR HR 4 AF 1 XLR 1 XLR 2 HR 4 dc HR 4 AF 2 RC 1L6 Audio output cable to suit AWDR 1 L6 receivers balanced AF output to XLR L6 LEMO AWDR 1 User Manual V1 0 21 RCP 1L6 Audio output and external powering cable for AWDR 1 L6 receivers external powering 10 18 V dc with 4 pin Hirose dc connector with balanced AF output to XLR XLR HR 4 dc 2RCP 1L6 Dual audio output and external powering cable to power two AWDR 1 L6 receivers external powering 10 18 V dc with 4 pin Hirose dc connector with 2x balanced AF output to XLR XLR 1 L6 LEMO 1 XLR 2 HR 4 dc L6 LEMO 2 AWDR 1 User Manual V1 0 22 Technical Specifications RF Transmission System Carrier Range to order 470 to 790MHz Channels up to 4800 switchable in 25 kHz steps Switching Range up to 120MHz Modulation System F3EGN Minimum Channel Spacing 300 kHz Reference Deviation 40 kHz Adjacent Channel Rejection gt 100dB Mute Level 4 steps OdBu nom 5dBu 15dBu 25dBu Audio Performance System S N Ratio gt 100dB Frequency Response 60Hz to 18kHz 2dB Distortion lt 0 2 THD AF Level Balanced variable output 42dBV to 6dBV Received Signal Strength Indicators RSSI Active A and Active B
4. 30 20 10 0 a men pe E A e DT 8 ges NET pNP LA 50 40 30 20 10 0 LE Se Ei pm em em Gef SS PER pen ES CO ob L ICT LI 50 40 30 20 10 0 SS E a pa Im E a EE E ES are Se es Tinian jc Low ILI OC AWDR 1 User Manual V1 0 Menu Description 8 Function Option for displaying or hiding certain Menus Facility to find quiet frequencies or Channels to use or noisy signals to avoid Set the audio output gain from 60B to 42dB in 6dB steps Option for inverting the phase of the output signal Allows for adjustment of the Head Phone volume Allows for adjustment of the Mute aka Squelch level Gives Unit Info Option to turn off the Pilot tone system Allows for adjustment of the Power On mode Menu Name Example Display Menu Description amp Function 50 40 30 20 10 0 Wa WO aaan Reset Option to return all settings to factory defaults mr Vee NE ALL 50 40 30 20 10 0 WW IE WO AF A DO mamm mm mm mm mm pr Lock Displays current Lock state and allows adjustment of the Lock Setting Please Note All menus are set to be displayed by default However within the display menu it is also possible to choose to show only one out of the Frequency Channel or Name menus and hence hide the other two AWDR 1 User Manual V1 0 10 Using the AWDR 1 Tuning the Receiver There are two methods available for tuning the receiver allowing both complete flexibility and con
5. Green signal gt 25uV Amber signal gt 5uV Red signal lt 5uV No light Muted Battery Status Indicator Green gt 2 2V Amber gt 1 9V Red lt 1 8V No light Battery Flat unit OFF AWDR 1 User Manual V1 0 23 TX Low Battery Indicator Red LED lights when TX battery lt 1 0V Headphone Monitoring Output AF Level 5OmW Impedance 16 Ohms Powering Battery Type IEC LR6 MN1500 2 x AA Current Consumption 250mA max 3V Battery Life approximately 5 Hours with alkaline battery External Power 10 0 to 18V dc with RCP cables Connectors Antenna Inputs SMA connectors x2 Audio Output 4 pin Hirose or large 6 pin Lemo connector Monitor Output 3 5mm jack socket accepts mono or stereo Dimensions Width 62mm max Depth 20mm Height 114mm max Weight 200gr Accessories Supplied e Antennas x2 e Quick start guide Optional extras e RC Receiver balanced audio output cable e RCP Receiver balanced audio output cable for external powering e 2RCP Dual balanced audio output cable for external powering of two receivers e HSA Hot shoe adapter Audio Wireless Ltd reserves the right to change specifications without notice as part of its policy of continuous product development Audio Wireless Ltd AWDR 1 User Manual V1 0 24 Audio Wireless AWT 1 Transmitter Switching bandwidth up to 120MHz for crews camera operators and sound recordists Audio Wireless AWDR 1 Diversity Receiver Small tru
6. POWER ON modes Manual and Automatic The Manual mode allows the unit to be turned ON and OFF holding the SET PWR button In the Automatic mode the receiver will power on as soon as a battery or external power is inserted and may be turned OFF by holding the SET PWR button Resetting Preferences Use this menu to reset the unit to the following Factory default settings e Clear all User defined channels VAR 01 to VAR 24 Unit Name Unit Model name e g AWDR 1 Display All Gain 6dB Phase not inverted Headphone Level 00 disabled Mute Squelch Level 00dB uV Pilot Tone Filter On Lock Mode Unlocked On Mode Auto To Reset the AWDR 1 press the SET PWR button whilst the Reset Menu is displayed and press the UP or DOWN button to select OK to reset or NO to cancel To confirm your choice press the SET PWR button After resetting the SAVED message will be displayed AWDR 1 User Manual V1 0 15 Locking and Unlocking the Unit The AWDR 1 is designed with a Lock function to help prevent any unwanted further changes to settings There are two options of lock available Lock and Super Lock SULOCK The general Lock can be activated and de activated at any time by pressing and holding both the UP and DOWN buttons until the key icon appears or disappears on the LCD display It can also be set via the LOCK menu and selecting LOCK but it can always be unlocked by holding bot
7. output simply select the Menu with SET PWR then use the UP and DOWN buttons until the required level is reached and select it by pressing SET PWR once more Please Note Make sure that the Headphone Amplifier is OFF 00 when not required WARNING High levels of volume can damage your hearing always set the Monitoring level low before connecting headphones and then adjust as required Mute Level Squelch MUTELV The receiver is fitted with an adjustable MUTE LEVEL to mute the receiver in cases of noisy background levels or as a very useful tool when setting the receivers in a multi channel set of 8 12 in a given TV band This is to avoid any unwanted receiver mute activation for a reliable operation Unit Information INFO Within the INFO menu it is possible to view the following unit information Serial Number Unit Unique and same as on the rear casing Model name E g AWDR 1 Max switching frequency In MHz model specific Min switching frequency In MHz model specific Dc volt level The voltage reading of the battery Software version number The Software version number AWDR 1 User Manual V1 0 14 Pilot Tone The AWDR 1 and AWT 1 series feature a Pilot Tone mechanism to only output the audio signal when it is received from the corresponding matching transmitter Use the menu to enable or disable the feature if required PILOT ON is recommended Power Settings On Mode The AWDR 1 features two
8. Primarily use the UP and DOWN to scroll through menu s and the SET PWR to select choices Alternatively at any time the SET PWR button can be held down to turn the receiver OFF and back ON and by holding both the UP and DOWN buttons the receiver can be LOCKED AWDR 1 User Manual V1 0 Frequency Label Indicates the tuning range of the receiver where it is possible to tune to frequencies within this range in steps of 25 kHz Alternatively the user may tune the Receiver to standard UHF TV channels with pre coordinated sub channels Battery Compartment The AWDR 1 s AA batteries are held in place by a captive easy twist compartment cover with a click stop mechanism for quick reliable changes possible by feel alone Simply open the battery cover by rotating clockwise insert 2 AA batteries please follow the polarity guidance into the compartment The click system reassure that the compartment is fully opened or closed To Open Rotate clockwise To Close Rotate anti clockwise Please Note When inserting the batteries please remember to follow the polarity guidance indicated on the rear face of the unit Remove the batteries when the unit will not be used for extended periods of time AWDR 1 User Manual V1 0 LCD Display 50 40 30 20 10 0 EI CoG aT e E TITTEN E amp O III IV IV IV IVA GC GGG The backlit multifunction LCD display provides clear access to all the available control menus an
9. TN AWDR 1 Receiver Small true diversity receiver for broadcast ENG and location recording with internal or external powering User Manual v1 0 9 iv User Manual Contents ENEE eege eege EE 1 A A seubaedbaeifesdalauiemvanel dene 1 jes ae o ene eet 1 General Description eeebusrbeeett eege eege 2 Eed 3 Product E 4 Audio Output E 4 Headphone Monitoring Socket oooooccccccccccncccconoconccccccnnnnnnananccncnnnnnnnnnnannnnnnos 4 The LED GNC AN ONS sad aana aa Aaaa 5 RSSI Active A and Active B Tri colour LED 5 Receiver Battery Status Tri colour LED 5 Transmitter Battery Status EEN 5 Antenna INPUl Socket Eegeregie aaraa 5 PUSH Button Controls sr E EAEAN SEa 6 Preguency E TE 7 Battery Compartment ergeet id iii 7 LOD Display siria iii iia 8 dE adeemditecdstsadeieddev ndbad dendesasennedeemetsadeesobneicdnet 11 Tuning the Reca A nenene 11 Tuning By le EE 11 Saving Custom E En e 11 Tuning By UHF TV Channel and Gub Chanmel 12 A A dsaatin Maaliaetaads 13 Display SettiNgS sesenta ti 13 SCAN oe y aee e ae 13 A 13 E y tee 14 Headphone Volume 14 Mute Level Squelch MUTELY coord 14 Unit Information INFO eee ee eee eer terete ere ee 14 Pilot TON eeben 15 Power Settings On ModS sica li lcibiico 15 Resetting Preferences casinos 15 Locking and Unlocking the Un iEliiinciconinicanicn incidan cda 16 Further Technical Information un 17 Antenna Data for Flexible Wire Antennae ooocccccccccnccccccccc
10. User Manual V1 0 11 Tuning By UHF TV Channel and Sub Channel Each UHF TV channel 8MHz wide in EU has up to 12 pre coordinated sub channels labelled A through to M excluding the letter I These have been calculated to avoid interference between them maximizing the use of the available spectrum Sub Channels A to H are the best eight 1 To tune to a UHF TV channel simply hit the SET PWR button whilst on the Channel Menu to start the channel select mode In this mode the displayed channel information flashes 2 Use the UP or DOWN buttons to scroll through all the available channels and press the SET PWR button to select one As well as the model dependent range of UHF TV channels are the user customisable VAR XX channels available 3 Use the UP or DOWN buttons to scroll through the available sub channels and press the SET PWR button to select your choice and SAVED message appears to confirm your selection Please note each UHF TV channel may have up to 12 pre coordinated sub channels e g A gt M Please Note Channel 38 606 614 MHz commonly used in the UK is presented with 2 sets of sub channels The Audio Wireless co ordinated A gt M set and the alternative JMFG 38 XX option that grants a set of sub channels numbered from 1 10 Do not mix sub channels from both sets For users in the UK it should be noted that channel 38 is the only general purpose channel recommended for use by the JMFG i
11. able to suit headphones impedances as low as 160 Please Note Make sure that the Headphone Amplifier is OFF 00 when not used High levels of volume can damage your hearing always set the Monitoring level low before connecting headphones and then adjust as required AWDR 1 User Manual V1 0 4 The LED Indicators RSSI Active A and Active B Tri colour LED A tri colour LED above each antenna socket continuously display the Received Signal Strength Indicators RSSI and shows which half of the Diversity Receiver is Active Receiver Battery Status Tri colour LED A tri colour LED continuously displays the internal external battery status Transmitter Battery Status Transmitter low battery warning Red LED lights up flashes when the supply voltage of the corresponding TX has fallen to below 1 0 Volt The Low Battery Warning period depends upon the type of battery used Antenna Input Socket A amp B The miniature 50Q SMA coaxial sockets are used as the antenna input connectors the detachable matching antennas are fitted by a simple screw on action AWDR 1 User Manual V1 0 5 FRONT VIEW ae Audio Output Socket Antenna Socket Antenna Socket gt E Multi function LCD Display Frequency Label Model Specific Push Button Controls Battery Compartment audio wireless Push Button Controls All user adjustments to the AWDR 1 are made via three push buttons
12. ble professional grade connectors Please Note To ensure best performance it is recommended to only use the AWT 1 transmitter series with the AWDR 1 diversity receiver series AWDR 1 User Manual V1 0 True Diversity The Audio Wireless diversity receiver systems give a dramatic improvement to signal dropout problems found in dead spots when compared to other simple standard or antenna switching receivers This is because the true diversity receiver makes use of two RF signals and when one antenna is receiving a weak signal the other antenna will be receiving a stronger signal offering greater reliable coverage The problem of signal dropout is usually caused where the direct and reflected signals happen to interfere and cancel each other out at the antenna Within the Audio Wireless diversity receiver the combining circuitry automatically discards the output from the receiving sections of weaker RF signal before it can degrade the audio output Should the signal strengths be similar the audio outputs are combined to improve the signal to noise ratio This audio mixing gives a 3dB improvement over conventional switched diversity receivers and results in a greater operating range By fully processing demodulating both signals and not simply switching at the Antenna level a robust and reliable AF signal can be transmitted with no audible dropouts and the best signal to noise ratio can be maintained over a large reliable operating area
13. ccnnnnnanaanccnnnncnns 17 Model Variants and Switching Bande 18 Audio Connector Details e 19 Cable End Connectors sentirnos ido cial 19 Standard Receiver Cables Details 20 Technical Specifications E 23 RF Transmission System scisiieisecoctanse coidaesdaesdascoobdenhdeveiensd ebhieebennjeveteaodaneds 23 Audio ne seo 23 Received Signal Strength Indicators HGEI 23 Battery Status indicator copiadas licita 23 AWDR 1 User Manual V1 0 TX Low Battery Indicator Ae 24 Headphone Monitoring Output 24 E 24 ele Tuten el 24 A A RO 24 ACCESOS E E biie 24 AWDR 1 User Manual V1 0 Foreword Thank you for choosing Audio Wireless We aim to offer the best quality products alongside a quick and reliable service for all our customers Please take some time to read our instruction manual to ensure you get the most out of our equipment Safety Instructions e Please read these instructions carefully before using the unit to avoid injury and damage to your AWDR 1 unit e Always include these instructions when passing the unit on to third parties e Never open the electrical units if the units are opened then the warranty becomes null and void e Protect the unit from damp and wet conditions as water entering inside can cause damage to the unit e Use only a slightly damp cloth to clean the unit Do not use any cleansing agents or solvents Product Contents 1 AWDR 1 Diversity Receiver 2 Antenna 1 Quick Start Guide 1 Carryin
14. d functions of the AWDR 1 Permanently displayed irrespective of the currently selected menu is the continuous AF metering of the audio signal level and RSSI level of each antennae s RF signal and the battery level icons Please Note The display backlight and LED indicators when active illuminate for approximately 15 seconds from last button press and subsequently turn off to optimize battery use By default the following main menus are available ese Example Display Menu Description amp Function 50 40 30 20 10 0 ss e e a fF AF Duane ZS e Displays Transmission Frequency and q y CODE T allows for adjustment when selected i iti 12 Su 50 40 30 20 10 0 _ EEN Displays Transmission Channel 8 Sub Channel ME e Channel as well as allowing for adjustment JO Ed when selected 20 nm 50 40 30 20 10 0 Ee q AA S Wane Ea a Displays Unit Name and allows for adjustment when selected DUR FUMA 1 AWDR 1 User Manual V1 0 8 Menu Name Display Scan Audio Phase Head Phone Mute Squelch Info Pilot On Mode Example Display 50 40 30 20 10 0 50 40 30 20 10 0 mamm IE IE ga E Ee E E E EES are se E JL 50 40 30 20 10 0 AAA A REEN mamm E RR IE LI 50 40 30 20 10 0 WO WO AF A mm em Gr H 50 40 30 20 10 0 mm E A e ee Bl 50 40 30 20 10 0 mm mm E A S mm IS E D Mi mm End a T ALLY 50 40
15. e diversity receiver for broadcast and location recording applications switchable RF front end filtering Audio Wireless Monitoring Receivers Monitoring mobility for presenters directors and crew in broadcast and film in studio or on location audiowireless Printed in the UK Published August 2013 Audio Wireless Ltd Elstree Film Studios Phoenix 5 Andrew Mitchell Building Shenley Road Borehamwood Hertfordshire WD6 1JG UK Telephone 44 0 20 8324 2375 www audiowireless co uk Email enquiry audiowireless co uk O
16. g Case AWDR 1 User Manual V1 0 General Description The AWDR 1 Diversity Receiver offers the greatest flexibility and sound quality for crews operators and sound recordists whether working internationally or simply under challenging RF conditions Its sophisticated structure comes in a lightweight yet rugged CNC machined aluminium case designed for extra strength and durability as well as the ability to withstand the heavy demande of location use The unit requires two AA batteries which fit into its unique battery compartment designed for fast and easy battery replacement by an easy twist compartment cover with a reassuring click stop mechanism Alternatively it can be externally powered from any 10 18V source Product Features Switching bandwidth up to 120MHz Tunable in 25kHz steps Digitally switchable RF front end Top level flexibility for international working Compact design tough lightweight aluminum case 2 x AA alkaline batteries provide approximately 5 hours of operating time or using lithium batteries even longer Easy twist battery compartment cover with click stop reassurance External powering capable with adaptor leads Balanced user adjustable audio output Audio output level from 6dBV to 42dBV Headphone Stereo mono mini jack with monitor volume control Easy operation by backlit LCD with programmable functions Continuous Rx and Tx low battery status indicators RF Pilot tone and noise operated mute Relia
17. h the UP and DOWN buttons The SULOCK mode can only be activated within the Lock menu and can only be UNLOCKED by removing the power from the unit Lock mode restrict any changes to any of the menu options but the unit can still be powered off by a long press of the SET PWR button When either lock mode is activated the key icon appears on all menus and LOCK or SULOCK will be displayed when attempting to change settings In the Lock mode Headphone volume is the only menu that is active AWDR 1 User Manual V1 0 16 Further Technical Information Antenna Data for Flexible Wire Antennae RENE ete eee Ser aa BLUE 560 510 620 BLACK 650 600 720 RED 750 700 800 NOTE RX AND TX ANTENNA LENGTHS ARE SAME Active length is the length of the antennae from the connecting socket housing to the tip AWDR 1 User Manual V1 0 ACTIVE LENGTH mm 125 106 88 Model Variants and Switching Bands AWDR 1 AWDR 1dband AWDR 1plus 500 MHz 600 MHz 700 MHz BE1 510 542 U1 600 632 G2 720 748 EE FB1 510 566 MHz pu G5 710 766 MHz U6 660 715MHz G6 730 785 MHz C1 600 698 MHz USA CAN Exc 608 614 MHz FB2 600 715 MHz FB3 710 785 MHz AWDR 1 User Manual V1 0 Audio Connector Details There are two options of AF audio output connectors 1 Small 4 pin HR4 Hirose connector HR10 7P 4S Pin 1 OV Ground Pin 2 AF 0 Pin 3 AF 0 Pin 4 External Powering with RCP cables
18. n public spaces AWDR 1 User Manual V1 0 12 Unit Name For convenience and quick distinction between units it is possible to give the receiver a 6 character alpha numerical name The characters available are A Z 0 9 and 3 special characters and By default the name given is the Units Model Number e g AWDR 1 Display settings In certain usage situations it may be preferred to hide some of the menus For example if the receiver is to only be tuned using frequencies it may be preferable to hide the channel menu or vice versa when tuning with UHF channels and sub channels Alternatively if the device has been tuned and will not need to be adjusted for an extended period of time it may be of benefit to display only the Unit s Name to quickly distinguish amongst other units The Menu Display options available are All Display all Menus Frequency Channel and Name Freq Display only the Frequency Menu amp not the Channel or Name Menus Chan Display only the Channel Menu amp not the Frequency or Name Menus Name Display only the Name Menu amp not the Frequency or Channel Menus To change the displayed menus simply hit the SET PWR button whilst on the Display Menu to start the Display menu select mode and cause the current Display option to flash continuously Then use the UP or DOWN buttons to cycle to the required setting and press the SET PWR button to select your choice and displa
19. venience These are tuning by Frequency or by numbered UHF TV Channel with pre coordinated Sub Channels Tuning By Frequency By default the Frequency menu is the first menu that appears upon turning ON the unit On the Frequency menu the currently used frequency for transmission is displayed on the screen in MHz 1 Totune press the SET PWR button to start the frequency select mode In this mode the displayed frequency flashes 2 Use the UP or DOWN buttons to scroll through the entire switching bandwidth in steps of 25 kHz 3 To save the selected frequency press the SET PWR button to store the confirmatory SAVED message will appear Saving Custom Frequencies The receiver can save up to 24 frequencies to the user customisable channel bank listed as VAR XX in the channel menu To store a frequency simply repeat the above but after selecting the frequency quickly press the SET PWR button again whilst the SAVED message appears Then select the required custom channel named VAR 01 to VAR 24 and hit the SET PWR button to select and display the confirmatory SAVED message Please Note There are 24 user customizable channels available which after being set in the frequency mode menu are then accessible via the channel mode menu explained further below Remember to change display mode to All for both menus to be available Resetting the unit will clear all user channel pre sets AWDR 1
20. y the confirmation SAVED message SCAN With the Scan function it is possible to find a quiet usable channel or when the Signal options is selected a signal or noisy channel can be found to avoid On the Scan Menu press the SET PWR button and then with the UP and DOWN buttons select whether to scan for noise or for a free channel Once SCAN is selected the unit will automatically search through all available pre coordinated channels and then in 100 kHz steps starting from the lowest available frequency Once the SCAN stops on an appropriate channel press the SET PWR buttons to accept or press the UP button to reject and continue with the scan AUDIO The Audio output level of the AWDR 1 is user adjustable between 6dBV to 42dBV to suit varying device input requirements To do so press SET PWR on the AUDIO menu adjust with the UP and DOWN buttons and press SET PWR to confirm AWDR 1 User Manual V1 0 13 Phase A phase reverse facility is provided within the AWDR s menu system to help the users when mixed equipment might be out of PHASE or when hard wired boom and Radio mics may have different phase To match the phase of other equipment used with the AWDR 1 is the ability to change the phase of the output Simply select whether to INVERT the phase or keep it NORMAL Please Note When the phase invert is selected the icon will appear on the screen Headphone Volume To adjust the volume of the monitoring
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