Sound Devices A20-Nexus, User Manual

Page 1: ...A20 Nexus 8 12 and 16 Channel True Diversity Receiver with SpectraBand Technology User Guide v1 00 ...

Page 2: ...0 Nexus User Interface 21 Menus 28 RTSA Real Time Spectrum Analyzer 29 Scan Mode 32 TX List 33 RF Menu 34 Antenna RF Overload Indication 36 Audio Outputs 36 Timecode 39 Networking 40 System Menu 42 Quick Setup Menu 45 Nexus Web App 47 Updating Firmware 50 Accessories 51 A20 QuickDock for 8 Series 51 A20 Monarch Antenna 56 A20 Shelf 56 2 4 GHz Antenna Bracket Assembly Kit 56 Frequency Band Restrict...

Page 3: ...A20 Nexus Specifications 61 A20 Monarch Specifications 63 Note on RF Interference 64 Servicing the A20 Nexus 64 Warranty 64 Legal Notices 65 Declaration of Conformity 68 A20 Nexus User Guide 3 ...

Page 4: ...wering via PoE DC input 8 Series or AC mains with optional adapter Web App control from browser on any computer smartphone or tablet Full remote operation capability Power via PoE audio via Dante control via Web App Dual DB 25 connectors for 16 channels of mic line or AES outputs Convert 16 channels of Dante to analog AES on DB25 connectors for sending IFB VOG more from mixer to set Wide 6 2 color...

Page 5: ...dulation has better sensitivity which results in better range The modulation setting must match between the A20 Mini A10 TX and the A20 Nexus in order for the transmitted signal to be received and decoded Intermodulation Immunity Because the A20 and A10 digital RF transmission is inherently resistant to intermodulation multiple A10 and A20 Digital Wireless systems can be used simultaneously on nea...

Page 6: ...an A20 Nexus receiver channel is receiving signal from an A20 Mini transmitter adjust the receiver channel s gain low cut and polarity from its associated 1RX view When the A20 Nexus is docked on an 8 Series the Nexus s gain low cut and polarity settings are bypassed and hidden In this case adjust the 8 Series trim low cut and polarity gain as necessary See the 8 Series User Guides for more inform...

Page 7: ... followed by yet another SAW filter array This array further attenuates out of band signals ensuring reliable reception and greatly suppressing any image frequencies The Local Oscillator and Mixer perform the traditional function of a single downconversion superheterodyne radio This section has been meticulously designed and is the other key element of our unique SpectraBand technology This sectio...

Page 8: ...to cycle through the current Receiver view Main Menu and RTSA Backs out of sub menus 5 Headphone Knob Rotate to adjust headphone output level Rotate to scroll through lists and select parameter values Rotate to scroll frequency cursor or adjust horizontal vertical zoom in RTSA Scan view 6 Multicolor Ring LED Solid blue when powering up Red when headphone output is clipping Flashing orange when sel...

Page 9: ...hose used for the 8 Series bluetooth antenna 4 LTC Wordclock Input BNC for connecting LTC or Wordclock input Nexus auto detects whether the signal is LTC or Wordclock including the associated frame rate or sample rate Disabled when mounted to an 8 Series via the expansion port 6 12 DC Inputs Dual TA4 M 10 18V DC inputs Highest voltage takes precedence Disabled when docked to an 8 Series via the ex...

Page 10: ...pansion port Control remains enabled 16 Factory Access Cover Covers and protects the factory use only ports Bottom Panel 1 Mounting Point 1 4 20 screw hole for mounting purposes 2 Expansion Port For docking A20 Nexus to an 8 Series mixer recorder using the A20 QuickDock optional accessory The expansion port provides power from the 8 Series and passes the multichannel receiver digital audio signals...

Page 11: ...cable from the transmitter to the USB A port Attaching a USB keyboard for entering text directly e g receiver channel names into the A20 Nexus Mounting a USB thumb drive for updating A20 Nexus firmware and saving setup files Syncing 8 Series timecode to an A20 Mini from the A20 Nexus 3 Screw holes for A20 QuickDock and A20 Shelf Four screw holes for mounting the A20 Nexus to an A20 Shelf and A20 Q...

Page 12: ...up Nexus docked to an 8 Series Mixer Recorder The A20 QuickDock accessory enables the A20 Nexus to be docked to an 8 Series mixer recorder The bottom panel incorporates a multi pin expansion port that connects power from the 8 Series and passes the multichannel receiver digital audio from A20 Nexus to the 8 Series A20 Nexus User Guide 12 ...

Page 13: ... Nexus receiver is minimized A single CAT cable can be used to transport Dante audio and remote control data between Nexus and the sound mixer As well as sending Dante audio to the mixer the Nexus can also receive Dante audio back from the mixer useful for distributing VoG and or IFB feeds etc via its analog D Sub outputs In this example the Nexus Web App is running on a tablet and controlling the...

Page 14: ...to talent powered from PoE Similar to the previous setup but with the Nexus being powered over PoE In this example a computer is controlling Nexus via the Web App and is also sending and receiving Dante to and from Nexus A20 Nexus User Guide 14 ...

Page 15: ...th Nexus As well as sending Dante audio to the mixer the Nexus can also send audio from its AES or Analog D Sub outputs In this example the Nexus Web App is running on a tablet and controlling the Nexus over Wi Fi A20 Nexus User Guide 15 ...

Page 16: ...hannels 1 8 are displayed This view is called the 8RX View All RX channels will be Off 8RX View 7 Press the triangle button to display the Main Menu 8 Tap the System icon to enter the System menu 9 Ensure Country is set to the country that you are in The Country setting determines which Tuning Bands and RF frequencies are legally unrestricted and available for selection in the A20 Nexus If using A...

Page 17: ...smitter ensure it has a charged battery or batteries installed then connect its USB C port to the A20 Nexus USB A port The A20 transmitter will appear in the TX List after a few seconds The A20 Nexus will then automatically establish a NexLink connection between the transmitter and the next available receiver channel This can take a minute or so Once connection is established Connected is displaye...

Page 18: ...RX1 to assign the clean frequency to receiver channel 1 The frequency is automatically pushed to the transmitter and its RF signal appears in the trace Tip Before assigning frequencies it is highly recommended to perform a scan of the local RF environment using Scan Mode to identify and choose a clear Tuning Band See RTSA Scan Mode for further information 19 Tap the orange 1 below the transmitter ...

Page 19: ...the A20 Nexus seamlessly switches between power sources should one fail The power source with highest voltage takes precedence and is displayed along with its voltage beneath the Power menu icon in the Main Menu and in screen 1 of the Power menu To turn Nexus on press the triangle button or with Power menu Turn on when power is applied enabled simply connect a power source To turn Nexus off press ...

Page 20: ...th outputs on the rear panel Enable or disable each DC Output from the Power menu These can be used for powering IFB transmitters camera hops and other low power peripherals When powered via TA4 voltage is passed through from the DC input 10 18V When powered via PoE DC Outputs supply 12V DC Note When powered by the 8 Series the DC1 and DC2 toggle switches are off and grayed out A20 Nexus User Guid...

Page 21: ...t UI elements for changing settings i e toggle switch list button value button action button etc Note When any touch screen UI element is selected brightness is reduced and touch is disabled on all other touch screens Toggle Switch Tap to toggle between On and Off Typically used for functions that have on and off states e g Power DC Out 1 and DC Out 2 Off On List Button Displays a list of items to...

Page 22: ...ow shows the current setting RX Views RX Views display real time receiver and transmitter signals and status information across the four touch screens There are several types of RX View 8RX View 4RX View 1RX View Upon power up the A20 Nexus shows the last displayed RX View 8RX View Displays 8 receiver channel strips two per screen Tap two neighboring screens simultaneously to display the 4RX View ...

Page 23: ...ys the receiver channel s frequency a If NexLinked to an A20 transmitter it is the same as the transmitter frequency b Displays Off when the receiver channel is Off not set to any frequency c The frequency flashes red when there is a NexLink issue Go to the 1RX View Gear Menu NexLink Status screen to determine the cause of the issue 6 RF History Displays the receiver channel s RSSI or Q history Se...

Page 24: ...the 1RX View Gear Menu NexLink Status screen to determine the cause of the issue b The frequency value is gray when the NexLinked transmitter is powered off c Tap the frequency button to select a frequency within the current Tuning Band i To enter a frequency tap each frequency field then rotate the HP knob to select a value Tap OK to store or Cancel to exit without saving Alternatively jump throu...

Page 25: ...if the channel is NexLinked to an A20 Mini b The receiver channel name cannot be edited if the channel is being fed from an A10 TX c The name is gray if the A20 Mini transmitter is Off or the transmitter is an A10 TX d If NexLinked to an A20 Mini transmitter the name is pushed to the transmitter e The name is rippled to the 8 Series channel that the receiver channel is routed to if docked to an 8 ...

Page 26: ...Series channel trim gains instead 9 HPF Adjusts receiver channel HPF Off 40 80 100 120 160 200 Hz Unavailable when docked to an 8 Series use 8 Series channel HPF instead 10 Polarity Adjusts the polarity of the channel audio between Normal and Reverse Unavailable when docked to an 8 Series use 8 Series channel polarity instead 11 RF Power Sets a NexLinked A20 transmitter s RF power Options are Off ...

Page 27: ...or Cancel at the Are you sure you want to format prompt f More Selects Page 2 2 Gear Menu Page 2 2 g Restore TX Settings Sends a command to the A20 Mini to restore its setting to factory defaults h A20 Battery Doubler Installed When set to YES the battery remaining indicator adapts to the A20 BatteryDoubler s discharge characteristics in order to provide accurate readings i Transmitter Information...

Page 28: ...f paired transmitters and to which RX channels they are NexLinked Pair Unpair transmitters and set Global TX parameters RF Accesses antenna tuning band and RF History settings Audio Out Accesses D Sub outputs headphone output sync reference and sample rate settings Power Displays the DC input voltage Enables disables DC Out 1 and 2 and configures whether the A20 Nexus should power on automatically...

Page 29: ...nest frequencies within that Tuning Band Once clean frequencies are found they can be assigned to receiver channels and their associated NexLinked transmitters directly from the RTSA View The RTSA View can be displayed on a single screen touch screen 4 or expanded across all 4 touch screens Single Screen RTSA View From any RX View show the single screen RTSA View on screen 4 by tapping the RTSA ic...

Page 30: ...nt signals are displayed a Ant A Only antenna A red line b Ant B Only antenna B white line c Ant A B Highest of Ant A and Ant B d Ant A B Both Ant A and Ant B 6 Tuning Band Sets the A20 Nexus s Tuning Band and displays its trace across the first three screens The Tuning Band can also be set from the RF Menu A Tuning Band is a brick wall frequency band from within which Nexus s receiver channels mu...

Page 31: ...arker locate blue zoom horizontal yellow and zoom vertical pink Tapping to locate the frequency marker automatically changes the Zoom icon to the blue marker locate function 9 Stop Start Button Tap to start or stop the RTSA or Scan mode Pressing stop freezes the current display Tip Use the Nexus Web App to export RTSA data as a csv and png file 10 Scan RTSA Button Tap to switch between RTSA and Sc...

Page 32: ...hen entering Scan mode by default the first block shown starts at 470 MHz The and arrows are not displayed when zoomed but the min and max frequencies of the zoomed range are The scan plot shows tuning bands as colored regions at the bottom of the display Many tuning bands have overlapping frequencies These overlapping frequencies are shown as gray regions To select a Tuning Band Locate the vertic...

Page 33: ...e A20 Mini transmitter s USB C port directly to the A20 Nexus USB A port or via a USB hub It is not necessary for the A20 Mini to be powered on or for it to have a battery installed 3 Wait for several seconds while the A20 Mini pairs to the Nexus The A20 Mini will appear at the top of the list once paired 4 Disconnect the USB cable connecting the A20 transmitter to the Nexus Pairing automatically ...

Page 34: ...to Cascade Out ideal for daisy chaining units When daisy chaining A20 Nexus it is recommended to use an external powered antenna to overcome the 3 dB splitting loss in the Nexus so that the receivers maintain excellent range Antenna In button Tap to toggle between the Front and Rear BNCs for the A and B antenna inputs A B Gear Icons Tap to access settings for the A and B antennas Power Bias Provid...

Page 35: ...econd 5 to 240 seconds LFA Display Rotate Sets the rotation of the Antenna A B display 0 or 180 LFA LED Sets Antenna A B LED activity On or Off LFA Version Info Displays system information about the Wisycom LFA B F1 Tuning Band Sets the A20 Nexus s Tuning Band and displays its trace across the rightmost screen The Tuning Band can also be set from the RTSA See RTSA and Architectural Overview for mo...

Page 36: ...t from the transmitters in use but rather some other sources consider changing the tuning band and frequency such that the interfering RF signal is moved out of band Audio Outputs When standalone the A20 Nexus delivers its multichannel receiver audio via analog AES and Dante outputs It can also be set up to convert incoming Dante audio and output it as analog or AES When docked to an 8 Series mixe...

Page 37: ...om the A20 Nexus s Network menu Routing A20 Nexus Receiver Audio or Dante Inputs to Analog or AES Outputs The A20 Nexus s top and bottom D Sub 25 pin connectors can be set to output receiver channel audio or incoming Dante audio as analog line 10 mic level or AES signal By default the D Sub outputs are set to output receiver channels Configure what to output from the top and bottom D Sub connector...

Page 38: ...he following sync reference sources Internal BNC In Word Clock or LTC The A20 Nexus auto detects whether the incoming signal is wordclock or timecode Dante 8 Series automatically selected when docked to an 8 Series The following table indicates how the digital output sample rate is determined for each type of sync reference source Sync Reference A20 Nexus Sample Rate Setting Internal 44 1k 48k or ...

Page 39: ...omatically detects whether a word clock or timecode signal is connected When the source is timecode the frame rate is automatically detected 2 From the 8 Series when docked via the expansion port When docked to the 8 Series the A20 Nexus s BNC In port is disabled and timecode and sync are received from the 8 Series Use the 8 Series Timecode Sync menu to set up timecode and sync as necessary Syncin...

Page 40: ...the Network Port Configuration list Port Configuration Dante Ctrl 1 RJ45 Dante Ctrl 2 RJ45 Dante Ctrl 3 SFP Control only All Ports Control Control Control Dante Control All Ports Dante and Control Dante and Control Dante and Control Dante 1 2 Control SFP Dante Dante Control Dante 1 SFP Control 2 Dante Control Dante Dante SFP Control 1 2 Control Control Dante Tip Disable Ethernet and Dante when not...

Page 41: ...ble Ethernet when not in use to reduce power consumption When the Ethernet switch is off the Port configuration button is grayed out When selecting a new port configuration the following popup message appears Are you sure you want to change the port configuration OK Cancel Dante and Control IP Settings A20 Nexus supports both DHCP and static IP address setup Dante and Control can be independently ...

Page 42: ...ent unauthorized or accidental access to front panel controls including OLEDs HP Encoder and triangle button Lockout mode can be enabled locally or via the web app When Lockout mode is enabled the HP encoder ring LED is backlit green to indicate that the A20 Nexus is still on To enable Lockout mode from the Nexus tap the Lockout Mode button The following popup is displayed Are you sure To disable ...

Page 43: ...the date time to A20 Mini transmitters where the value is used to set the creation time of the A20 Mini recorded files 2 Sets the creation date time of A20 Nexus Quick Setup files Tap Date Time to bring up the Date Time popup then enter MM DD YY and HH MM SS In each field rotate the HP knob to set a value then press the HP knob to jump to the next field Tap Done to store Time Zone Set the time zon...

Page 44: ...are pushed from the A20 Nexus to the A20 Mini or pulled from the A20 Mini to the A20 Nexus Push to Transmitter Pull from Transmitter Manual not pushed or pulled must be set manually Plugins Tap Plugins to display currently installed plugins and to install new plugins A20 Nexus User Guide 44 ...

Page 45: ...p Tap Save to store the current A20 Nexus settings During the save process Saving Setup is displayed Load Setup Choose which categories Channel RF RTSA Scan Audio Network Other to load This allows you to select only the settings you want to change and which ones you want to remain Tap Load Setup to bring up a list of the setup files stored in the four internal memory slots and USB drive Selecting ...

Page 46: ...el Headphone Out Routing Headphone Out Gain Network Port Configuration Ethernet On Off Control DHCP On Off Dante DFCP On Off Control Static IP address subnet mask gateway Dante Static IP address subnet mask gateway Other Sync Reference Sample Rate Brightness Screensaver DC Out 1 DC Out 2 Turn On when Power is Applied Time Zone Daylight Savings On Off TX List Global TX Settings Power Off confirmati...

Page 47: ...he web app A VPN is required if Nexus is outside of the local network 2 See Networking for information on how to configure and connect the Nexus to a network 3 Go to the Network menu 4 Make a note of the IP address shown in the Control IP Settings screen 5 Enter that IP address into a web enabled device s web browser More than one web enabled device can be used to access the app allowing multiple ...

Page 48: ... the functionality of the A20 Nexus s front panel 1RX View See 1RX View When docked to an 8 Series the Gain HPF and Polarity settings are handled on the 8 Series and as such are disabled in the Nexus web app When Mode is set to Rec RF or Rec Only the Rec buttons are grayed out 1 Receiver Channel Tap or Click to jump straight to another receiver channel s 1RX View 2 Frequency Tap to display the Sel...

Page 49: ... Frequency Marker s displayed frequency to any receiver channel 2 Exit Button Tap or click the X to exit the RTSA and return to the main view 3 Save Button Tap or Click to save the RTSA trace data as a csv file and png image file Files are saved to your browser s download destination 4 Receiver Channel Identifier and Shortcut Tap the receiver channel number to jump directly to the receiver s 1RX V...

Page 50: ...ices com download To update Nexus firmware 1 Download new Nexus firmware PRG file from the Sound Devices website 2 Copy the PRG file to the root of a USB thumb drive that has been formatted by the A20 Nexus See System menu 3 Insert the USB thumb drive into the rear panel USB A port 4 Access the System menu and tap Firmware Update 5 The Nexus will automatically display the PRG file Tap OK to start ...

Page 51: ...us front panel or its web app The 8 Series user interface is not used for control Most A20 Nexus rear panel connectors are disabled apart from the antenna connectors the USB A port and the Ethernet ports The USB A port has the following capabilities when A20 Nexus is docked on an 8 Series Pairing A20 Mini transmitters to the A20 Nexus by connecting a USB C cable from the transmitter to the USB A p...

Page 52: ...on the QuickDock mounting plate on the bottom of the A20 Nexus a Align the four mounting plate holes 1 with the screw holes on the bottom of the A20 Nexus 4 Secure the mounting plate a To make it easy to secure the mounting plate with the four allen screws temporarily detach the Quick Release mechanism from the mounting plate if not already done so by squeezing together both the rear red levers an...

Page 53: ...ick release mechanism so that the multi pin connector mates with the expansion port on the A20 Nexus Firmly press down and ensure the quick release mechanism is flush with the surface of the mounting plate 5 On the 8 Series screw in the five mounting pillars a Replace three screws 2 with the three long mounting pillars b Screw in the two short mounting pillars into screw holes 3 A20 Nexus User Gui...

Page 54: ...8 series a Start by hooking the Nexus mounting plate onto the two rear mounting pillars on the 8 Series b Next squeeze both front red release levers together and press down firmly on top of the A20 Nexus Once located in place release the red levers A20 Nexus User Guide 54 ...

Page 55: ...r 7 To undock the A20 Nexus from the 8 Series a Slide the A20 Nexus s front right black latch off the 8 Series mounting pillar b Squeeze both the front red release levers and lift the A20 Nexus from the front c Slide out the A20 Nexus towards the rear of the 8 Series to unhook A20 Nexus User Guide 55 ...

Page 56: ... ears 6x rack ear screws 8x mounting screws for securing in place two A20 Nexus or PowerStation 8M or one of each Assembling the A20 Shelf 1 Fitting the rack ears Each rack ear has multiple holes to allow the depth of the shelf to be adjusted Position the rack ear on the side of the shelf then select which three holes to use for the preferred depth making sure to align them with the screw holes in...

Page 57: ... such that the screw aligns with the screw hole near the front of the Nexus b Use the 3 32 mm allen key to screw in the bracket screw so that it loosely holds the bracket in place c Adjust the lateral position and angle of the bracket to your preference then tighten the bracket screw d Adjust the position of the cable clamp so that it aligns with the side panel screw hole near the rear of the Nexu...

Page 58: ...s secondary users in the 1435 1525 MHz AFTRCC band This is detailed in the FCC Part 74 rules https www ecfr gov current title 47 chapter I subchapter C part 74 One section of the Part 74 rules that s of particular interest to operators seeking an AFTRCC band license is 74 803 d https www ecfr gov current title 47 chapter I subchapter C part 74 p 74 803 d Similar to the 914 5 944 MHz band nationwid...

Page 59: ...ignal 22 Output 3 Ground 23 Output 2 signal 24 Output 1 signal 25 Output 1 Ground Mates with DB 25 Male Connectors Wired per the AES59 standard DB 25 Top and Bottom D Sub Ch 1 8 AES Out 1 Digital Out 4 signal 2 Digital Out 4 Ground 3 Digital Out 3 signal 4 Digital Out 2 signal 5 Digital Out 2 Ground 6 Digital Out 1 signal 7 Unused 8 Unused 9 Unused 10 Unused 11 Unused 12 Unused 13 Unused 14 Digita...

Page 60: ...ohm connector recommended SFP Per SFF INF 8074i standard For Dante and Control networks Ethernet RJ45 Standard 8P8C female For Dante and Control networks Dante Ctrl 1 port supports PoE TA4 DC In 1 2 Pin 1 ground Pin 2 Pin 3 Pin 4 positive volts 10 18V 4 pin Hirose DC Out 1 2 Pin 1 ground Pin 4 positive volts 10 18V 500 mA max between both outputs ie 250 mA 250 mA USB A Per USB IF standard 5V 500mA...

Page 61: ...on 100 dB typical Cascade output 50 ohm 3 5 dB Insertion Loss from front BNC through rear BNC It is recommended to use an external powered antenna to overcome the 3 dB splitting loss in the Nexus so that the receivers maintain excellent range Wideband power split pre LNA RF Bias output 12V 200 mA each BNC Smart antenna support Wisycom compatible Audio Latency Standard modulation 2 ms analog or dig...

Page 62: ...at 30W needed standard 15W PoE 802 3af will not work 8 Series through unit to unit connector when docked AC mains adapter sold separately Levels DC input 10 to 18V in 2A minimum at 10 VDC 11 W idle default configuration Extra power passed through for USB power active antenna power and DC output power USB A 5V 500 mA output supports keyboards thumb drives A20 Mini transmitters and USB hubs Environm...

Page 63: ...ain 2 2 dBi Pattern Omnidirectional Return Loss Better than 15 dB across entire 470 1600 MHz range Mounting Threads 20 Dimensions H x W x D 17 0 cm x 21 0 cm x 1 7 cm 6 68 in x 8 26 in 0 67 in Weight 0 12 kg unpackaged 0 26 lbs unpackaged A20 Nexus User Guide 63 ...

Page 64: ... extend the warranty coverage period registration must be completed within the initial ONE 1 year warranty period Products must be purchased through authorized Sound Devices resellers to qualify for Warranty coverage Damage resulting from the opening of a Sound Devices product or attempted repairs by a non authorized Sound Devices repair technician will void warranty coverage This is a non transfe...

Page 65: ...HE DELETION OR OTHER LOSS OF AUDIO RECORDINGS OR DATA REDUCED OR DIMINISHED AUDIO QUALITY OR OTHER SIMILAR AUDIO DEFECTS ARISING FROM RELATED TO OR OTHERWISE ATTRIBUTABLE TO THE PRODUCTS OR THE END USER S USE OR OPERATION THEREOF REGARDLESS OF WHETHER SUCH DAMAGES ARE CLAIMED UNDER CONTRACT TORT OR ANY OTHER THEORY CONSEQUENTIAL DAMAGES FOR WHICH SOUND DEVICES SHALL NOT BE LIABLE SHALL INCLUDE WIT...

Page 66: ...rent from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help This device complies with FCC RF exposure limits for general population uncontrolled environments A separation distance of at least 20 cm must be maintained between the antenna and all persons This device must not be co located with any other antenna or transmitter This device has be...

Page 67: ...ux normes ISED sur les limites d exposition aux radiofréquences pour la population générale et environnements non controllés Une distance minimale d au moins 20cm doit être maintenue entre l antenne et toute personne Cet appareil ne doit pas être co localisé avec toute autre antenne ou transmetteur Cet appareil a été aprouvé pour fonctionner avec le type d antenne ci dessous Model W1010 Type Anten...

Page 68: ...lowing harmonised standards and or normative documents were applied Health Safety Article 3 1 a of RED EN 62368 1 2014 EN 50566 2017 EMC Article 3 1 b of RED EN 301 489 1 v2 2 3 2019 EN 301 489 9 v2 1 1 2019 EN 301 489 17 v3 2 4 2020 RF Spectrum Article 3 2 of RED EN 300 422 1 v2 1 2 2017 EN 300 328 v2 2 2 2019 EN 300 440 v2 1 1 2017 Signed for and on behalf of Sound Devices LLC Nov 21st 2022 ____...