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Sound Devices ASTRAL A20-SuperNexus User Manual
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Sound Devices ASTRAL A20-SuperNexus User Manual

Sound Devices ASTRAL A20-SuperNexus User Manual

16 to 32-channel, hexversity rack mount receiver with spectraband and nexlink technology
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ASTRAL
®
A20-SuperNexus
16 to 32-Channel, HexVersity Rack Mount Receiver
with SpectraBand and NexLink Technology
User Guide v8.10

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Summary of Contents for Sound Devices ASTRAL A20-SuperNexus

  • Page 1 ASTRAL ® A20-SuperNexus 16 to 32-Channel, HexVersity Rack Mount Receiver with SpectraBand and NexLink Technology User Guide v8.10...

  • Page 2: Table Of Contents

    A20-SuperNexus User Guide Contents Chapter 1: Contents Chapter 1: Contents ............................................. 2 Chapter 2: Introduction ..........................................7 2.1 Key Features ............................................7 2.2 SpectraBand ............................................8 2.3 Tuning Bands ............................................8 2.4 HexVersity ............................................8 2.5 Digital Wireless Modulation ......................................... 9 2.6 NexLink Wireless Transmitter Control ....................................
  • Page 3 A20-SuperNexus User Guide Contents 7.4.2 Example 2: 1RX View when sourced from multiple Astral transmitters in REC+RF Mode ..................34 Chapter 8: Menus ............................................35 Chapter 9: TX List ............................................36 9.1 Pairing an Astral Transmitter to the A20-SuperNexus ..............................37 9.2 Pairing via USB ..........................................
  • Page 4 A20-SuperNexus User Guide Contents 15.8 MADI Outputs ..........................................64 15.9 Tone Generator ..........................................65 15.10 Headphone Output ........................................66 15.11 Global RX Output Gain ........................................66 15.12 Audio Meters ..........................................66 Chapter 16: Timecode ..........................................67 16.1 Syncing Astral transmitters to A20-SuperNexus timecode............................. 67 Chapter 17: Network...........................................
  • Page 5 A20-SuperNexus User Guide Contents 19.5 Other System Settings........................................80 19.6 Macros - AstralComm ........................................83 19.6.1 Establishing AstralComm Communication ................................83 19.6.2 DiGiCo Console List ........................................84 19.6.3 Creating a Macro Command ..................................... 84 19.6.4 Macros and RF Mirror Mode...................................... 86 Chapter 20: Quick Setup Menu ........................................
  • Page 6 A20-SuperNexus User Guide Contents 25.2.3 A20-Monarch Antenna......................................114 Chapter 26: Restricted Frequency Authorizations ................................... 115 Chapter 27: Connector Pin Assignments ....................................116 Chapter 28: Specifications ........................................117 28.1 A20-SuperNexus Specifications ....................................117 28.2 A20-Opto Specifications ........................................ 121 28.3 A20-Outpost-NL Specifications ..................................... 122 28.4 A20-Monarch Specifications ......................................

  • Page 7: Chapter 2: Introduction

    A20-SuperNexus User Guide Introduction Chapter 2: Introduction The A20-SuperNexus is an ultra-high performance, 16 to 32-channel wireless microphone receiver in 1RU rackmount chassis. It features 16 independent, HexVersity channels that can be expanded to 32 channels via software license. The A20-SuperNexus features NexLink, an innovative concept in wireless microphone receivers: full remote control of microphone transmitters via an integrated, long distance 2.4 GHz link.

  • Page 8: Spectraband

    A20-SuperNexus User Guide Introduction 2.2 SpectraBand The A20-SuperNexus incorporates SpectraBand, a technology that enables the A20-SuperNexus to tune over a super wide range of 169-1525 MHz. This 169-1525 MHz global range is divided into multiple tightly filtered frequency ranges called ‘filter ranges’. The sharp attenuation at either end of a filter range significantly reduces out of band interference resulting in excellent range and performance.

  • Page 9: Digital Wireless Modulation

    A20-SuperNexus User Guide Introduction 2.5 Digital Wireless Modulation Long Range, Standard, and T&M (Test and Measurement) Modulation The A20 wireless products offer three proprietary digital modulation schemes that provide unbeatable range, unrivaled audio quality, and very low latency. Modulation schemes can be selected on a per-receiver-channel basis. Long Range modulation has better sensitivity which results in better range. T&M (Test and Measurement) modulation has been specifically optimized for the flattest frequency response and phase response possible to very accurately measure the phase and frequency response of loudspeaker arrays in indoor and outdoor venues.

  • Page 10: Safety Information

    A20-SuperNexus User Guide Introduction 2.8 Safety Information All the safety and operating instructions should be read before the product is operated. WARNING: To reduce the risk of fire or electric shock or damage, do not expose this product to rain or moisture. Only use in non-tropical climate regions.
  • Page 11 A20-SuperNexus User Guide Introduction INSTALLATION: Caution: The product should only be installed and used in accordance with the manufacturer's operating instructions. Use with carts, stands, or carriers may result in instability causing injury. HEADPHONES: The headphone output can produce high sound levels which may be harmful to your hearing. The use of lower impedance headphones/earpieces may cause unacceptable high sound levels.

  • Page 12: Architectural Overview

    A20-SuperNexus User Guide Introduction 2.9 Architectural Overview The A20-SuperNexus builds upon the existing A20-Nexus’ new approach to professional audio receiver design, allowing tuning from 169MHz all the way to 1525MHz, with some significant additions. The first thing to note about the A20-SuperNexus architecture is there are six independent RF signal paths – one for each antenna input – which all operate simultaneously.

  • Page 13: Block Diagram

    A20-SuperNexus User Guide Introduction FPGA also performs the HexVersity operation which not only selects the best digital signal from the six antennas, but works at the bit level, yielding exceptional range. The resultant audio signals are then fed out of the FPGA to the various audio outputs. 2.9.1 Block Diagram...

  • Page 14: Chapter 3: Panel Views

    A20-SuperNexus User Guide Panel Views Chapter 3: Panel Views 3.1 Front Panel 1 & 3: NexLink Antenna Connectors Dual SMA-F ports for connecting 2.4 GHz SMA-M antennas for NexLink. Both antennas need to be connected. Alternatively, the rear-panel NexLink connections can be used. NexLink antennas can be located remotely closer to the action by using the optional A20-Outpost-NL box.

  • Page 15: Rear Panel

    A20-SuperNexus User Guide Panel Views ● Rotate to select next or previous RX channel when viewing the 1RX View. ● Press and hold > 3 secs to disable/enable touch on the OLED screens. Orange border around each OLED indicates that touch is disabled. 6: Control Knob Multicolor Ring LED ●...
  • Page 16 A20-SuperNexus User Guide Panel Views Note: Only use the 2.4 GHz SMA-M antennas supplied with the SuperNexus or equivalent. Do not use 2.4 GHz RP-SMA antennas (as used on Sound Devices 8- Series mixer/recorders). 2: LTC / Wordclock Input BNC for connecting LTC or Wordclock input. A20-SuperNexus auto-detects whether the signal is LTC or Wordclock including the associated frame rate or sample rate.

  • Page 17: Bottom Panel

    A20-SuperNexus User Guide Panel Views 10: Ethernet Ports 1 & 2 2x RJ45 ports for Dante, Control, and A20-Outpost-NL connection. Ethernet port 1 can output PoE+ (max 30 W) for powering peripheral PoE+ devices such as the A20-Outpost-NL. 11: USB-A Port Multi-function USB-A port for: ●...

  • Page 18: Chapter 4: Powering

    A20-SuperNexus User Guide Powering Chapter 4: Powering The A20-SuperNexus is powered from AC mains (100-240V AC) or DC 10-18V via the 4-pin XLR. AC power takes priority over DC power if both are connected. The control knob ring LED illuminates blue during power up, then dims once the device has fully booted. When the A20-SuperNexus is first powered on, the last accessed RX View is displayed.

  • Page 19: Chapter 5: Quick Start

    A20-SuperNexus User Guide Quick Start Chapter 5: Quick Start ● Connect AC and/or DC power, BNC antennas, SMA NexLink antennas, Network ports (for control and/or Dante), and Audio outputs as required. ● Pair any new Astral transmitters to the A20-SuperNexus using a USB cable. Verify pairing via the List.

  • Page 20: Chapter 6: Navigating The User Interface

    A20-SuperNexus User Guide Navigating the User Interface Chapter 6: Navigating the User Interface The A20-SuperNexus is operated from its front panel triangle button, control knob, HP knob, and eight touch screens or remotely via a web interface. Triangle Button ● Press to power up.
  • Page 21 A20-SuperNexus User Guide Navigating the User Interface ● Value Button: Displays a parameter’s value. ○ Tap to select - the button turns orange. ○ Rotate the Control knob to adjust the value. ○ Press the Control knob or tap the button to exit. ●...

  • Page 22: Chapter 7: Rx Views

    A20-SuperNexus User Guide RX Views Chapter 7: RX Views RX Views display real-time receiver channel data, transmitter signals, and status information across the eight OLED screens. There are several types of RX View: ● All (Displays either 16, 24, or 32 channels, depending on how many channel expansion licenses are installed) ●...

  • Page 23: 16Rx View

    A20-SuperNexus User Guide RX Views 7.2 16RX View (‘All’ View when no channel expansion licenses are installed) ● Displays 16 receiver channel strips, two per screen. ● Tap the right arrow at the bottom of screen eight to bank to the next bank of channels (w/expansion license only). ●...
  • Page 24 A20-SuperNexus User Guide RX Views 3. NexLink RSSI Meter: Indicates the Receive Signal Strength Indication (RSSI) of the 2.4 GHz NexLink signal from the transmitter. The RSSI color signifies the transmitter NexLink status. a. Green = Transmitter is on and NexLink is active b.

  • Page 25: 8Rx View

    A20-SuperNexus User Guide RX Views Antenna Color Light blue Dark blue Light green Dark green Light orange Dark orange X (A) [Combiner mode] Light blue X (B) [Combiner mode) White 8. Link Q Meter: Indicates the quality of the received radio frequency signal from the transmitter. 9.
  • Page 26 A20-SuperNexus User Guide RX Views c. If NexLinked to an Astral transmitter, the name is pushed to the transmitter. 2. RF Frequency: Displays the receiver channel’s frequency and band (Band 1 = yellow font), (Band 2 = purple font), (Band 3 = white font). Tap to change the frequency and the band.

  • Page 27: 1Rx View

    A20-SuperNexus User Guide RX Views If NexLinked to an Astral transmitter, the frequency is automatically pushed to the transmitter unless NexLink Menu > “Manually set …” toggle is on. 3. HPF: Indicates if the HPF is active either on the transmitter (if an A10-TX) or receiver channel (if an Astral transmitter). 4.

  • Page 28: Example 1: 1Rx View When Sourced From A Single A20-Tx Transmitter In Rec+Rf Mode

    A20-SuperNexus User Guide RX Views Channel sourced from an A10-TX or non-NexLinked transmitter 7.4.1 Example 1: 1RX View when sourced from a single A20-TX transmitter in REC+RF Mode ● Rotate the Control knob to navigate to next and previous 1RX views. ●...
  • Page 29 A20-SuperNexus User Guide RX Views 3. NexLink RSSI Meter: Indicates the Receive Signal Strength Indication (RSSI) of the 2.4 GHz NexLink signal from the transmitter. The RSSI color signifies the transmitter NexLink status. a. Green = Transmitter is on and NexLink active b.
  • Page 30 A20-SuperNexus User Guide RX Views If NexLinked to an Astral transmitter, the frequency is automatically pushed to the transmitter unless NexLink menu > NexLink Tuning Mode is set to Manual. 5. RF History: Displays the receiver channel’s RSSI + Q history. See Menu > RF. 6.
  • Page 31 A20-SuperNexus User Guide RX Views Note: Privacy is not supported with Standard modulation currently. As such, channel audio is muted. 13. RF Power: Sets a NexLinked A20 transmitter’s RF power. Options are 2 mW, 10 mW, 20 mW, 40 mW, and 100mW (A20-HH only). RF Power Level options are dependent on TX model, Country, Tuning Band, Frequency Authorization, and whether the ‘Allow Extra High RF Power’...
  • Page 32 A20-SuperNexus User Guide RX Views Example: A20-TX Gear Menu a. NexLink Status: Displays various status alerts relating to communication over NexLink. See NexLink Status Alerts b. Mode: Sets a NexLinked Astral transmitter’s Mode. Options are RF only, REC only, and REC+RF (non-US TX models only or A20-TX models not set to Lav).
  • Page 33 A20-SuperNexus User Guide RX Views q. Slide Switch: A20-HH with Control-Sw installed only. Selects the function of the slide switch. Select from None, Mute, Rec, Aux Latch, Power, GPIO, and RF. Button: A20-HH with Control-1 installed only. Selects the function of the button. Select from None, Mute, Rec, Aux Hold, Aux Latch, Power, GPIO, RF and PTT.

  • Page 34: Example 2: 1Rx View When Sourced From Multiple Astral Transmitters In Rec+Rf Mode

    A20-SuperNexus User Guide RX Views The Main Audio Output path is typically used as the ‘normal’ program feed path. The Aux Audio Output path is typically used for talkback purposes but there are myriads of other possible use cases. Aux routing is typically activated from a switch or button on the A20-TX or A20-HH transmitters, but it can also be activated using the RX channels’...

  • Page 35: Chapter 8: Menus

    A20-SuperNexus User Guide Menus Chapter 8: Menus All A20-SuperNexus settings are organized into menus accessed via the top-level Main Menu. The triangle button cycles between the current RX view and Main Menu. The leftmost OLED displays navigation icons for the various RX views. Tap an RX View icon to jump to its RX View. When in a menu, press the triangle button or tap the leftmost OLED to back out to the menu above.

  • Page 36: Chapter 9: Tx List

    A20-SuperNexus User Guide TX List Chapter 9: TX List The TX List is an inventory of all paired Astral transmitters and which RX channels, if any, they are assigned to. Up to 64 transmitters can be paired with the A20-SuperNexus. ‘Pairing’ is a process that establishes a NexLink relationship between the A20-SuperNexus and Astral transmitter. Once paired, an Astral transmitter can be controlled and monitored from A20-SuperNexus.

  • Page 37: Pairing An Astral Transmitter To The A20-Supernexus

    A20-SuperNexus User Guide TX List TX List with a Group Row selected showing ‘Partial’ status in OLED 7. The ‘Partial’ status indicates that at least one of the transmitters in the group is not in sync with the setting’s state. TX List >...

  • Page 38: Pairing Via Usb

    A20-SuperNexus User Guide TX List Transmitters can be paired wirelessly or via USB. 9.2 Pairing via USB 1. Enter the TX List by tapping the TX List icon in the Main Menu. 2. Connect the Astral transmitter’s USB-C port directly to the A20-SuperNexus’s front USB-C port or rear USB-A port directly or via a USB hub. It is not necessary for the Astral transmitter to be powered on or for it to have a battery installed during USB pairing.

  • Page 39: Unpairing / Handoff

    A20-SuperNexus User Guide TX List 5. Tap ‘Pair Selected’. When pairing multiple transmitters, the system assesses each TX, starting with the transmitter with the lowest frequency and assigns it to the lowest available RX channel. 6. At the popup, select whether to apply the transmitter’s current frequency to the RX Channel. a.

  • Page 40: Tx List Description

    A20-SuperNexus User Guide TX List 9.5 TX List Description The TX List is sorted numerically by receiver channel (Chan) number. When multiple transmitters are assigned to the same receiver channel, they are sorted alphanumerically by transmitter name within the channel number group. The TX List displays the following columns: ●...
  • Page 41 A20-SuperNexus User Guide TX List ● LEDs On/Off: Tap to turn LEDs on or off for a transmitter or group of transmitters. ● REC On/Off: Tap to start/stop a transmitter or group of transmitters recording. ● Gear Menu: Tap to access other transmitter settings on OLED screens 5-8. Available options depend on the Astral transmitter model. ●...

  • Page 42: Tx List Gear Menu

    A20-SuperNexus User Guide TX List 9.5.1 TX List Gear Menu • Mode: Set transmitter mode. Choose between RF Only, REC Only, or REC+RF (non-US models only). Note that the A20-HH does not offer REC+RF mode. • Modulation: Sets transmitter and associated channel’s RF modulation. •...
  • Page 43 A20-SuperNexus User Guide TX List • Button-L, -C, -R: A20-HH with Control-3 installed only. Selects the function of the L, C, and R buttons. Select from None, Mute, Rec, Aux Hold, Aux Latch, Power, GPIO, RF and PTT. • Display LEDs: A20-HH Only. Selects what the selected ePaper Display’s backlight should show. •...

  • Page 44: Assigning A Paired Transmitter To A Receiver Channel

    A20-SuperNexus User Guide TX List 9.6 Assigning a Paired Transmitter to a Receiver Channel Assigning a paired transmitter to a receiver channel enables synchronization of frequency, modulation, and privacy settings between the transmitter and that receiver channel. Up to 16 transmitters can be assigned to the same receiver channel. 1.

  • Page 45: Chapter 10: Rf Menu

    A20-SuperNexus User Guide RF Menu Chapter 10: RF Menu The RF Menu accesses antenna, band, and RF History settings. From the Main Menu, tap the RF icon to enter the RF Menu. The A20-SuperNexus includes three independent bands each tunable to anywhere within SpectraBand’s 169 to 1525 MHz frequency range, making it easy to find clean, usable spectrum.
  • Page 46 A20-SuperNexus User Guide RF Menu and 3 are routed to the bands, Band 1, Band 2, and Band 3 as the Antenna Mode list is scrolled. Active antenna pairs and bands are signified by blue-filled boxes and inactive ones by gray-filled boxes. It is not possible to access settings for inactive antenna pairs or bands. ●...
  • Page 47 A20-SuperNexus User Guide RF Menu Typical Application: Hybrid deployments requiring a combination of one Tuning Band with more robust coverage and/or a larger coverage area. And another Tuning Band with normal diversity coverage. Antennas can be tailored to meet the needs of the specific Tuning Band they are assigned to.
  • Page 48 A20-SuperNexus User Guide RF Menu 3-way Diversity Antenna Pair 1 -> Tuning Band 1 Antenna Pair 2 -> Tuning Band 2 Antenna Pair 3 -> Tuning Band 3 OLED 4 = RTSA for Band 1. Tap to expand RTSA OLED 5 = RTSA for Band 2. Tap to expand RTSA OLED 6 = RTSA for Band 3.

  • Page 49: Antenna Pair Settings

    A20-SuperNexus User Guide RF Menu 10.2 Antenna Pair Settings Change settings for the A and B antennas for each antenna pair 1, 2, and 3. ● < (Back): Tap to return to the RF Menu ● Antenna Pair On/Off: Enables or disables the selected antenna pair. ●...

  • Page 50: Rf History

    A20-SuperNexus User Guide RF Menu 10.3 RF History RF History real time graphs are displayed in the 1RX, 8RX, and 16RX Views. RF History is useful for monitoring recent RF environmental conditions and for troubleshooting RF issues. The graphs display RF signal level (RSSI) and/or link quality history over a specified duration from the ‘now’ value displayed on the graph’s right to the oldest past value on the graph’s left.

  • Page 51: Chapter 11: Antenna Rf Overload Indication

    A20-SuperNexus User Guide Antenna RF Overload Indication Chapter 11: Antenna RF Overload Indication The A20-SuperNexus indicates when its antenna inputs are approaching overload or overloading. ● Red = Overload ● Orange = Approaching overload ● Left indicator (in OLED 1) = Overload status for antennas 1A, 2A, and 3A ●...

  • Page 52: Chapter 12: Rtsa (Real Time Spectrum Analyzer)

    A20-SuperNexus User Guide RTSA (Real Time Spectrum Analyzer) Chapter 12: RTSA (Real Time Spectrum Analyzer) The RTSA is a real time, visual spectrum analysis tool for assisting in frequency coordination and selection of clean RF frequencies. The RTSA can operate over the entire SpectraBand range (169 MHz to 1525 MHz). The RTSA trace represents RF signal level (in dBm) on the vertical axis and RF frequency on the horizontal axis.
  • Page 53 A20-SuperNexus User Guide RTSA (Real Time Spectrum Analyzer) Multi-RTSA View Tap the Main Menu RTSA icon to access the RTSA View. The Antenna Mode determines which of the three bands, Band 1, Band 2, and/or Band 3 are displayed. Filter Range: Shows the selected filter range for each of the tuning bands, Band 1, Band 2, Band 3. Tap to select a different filter for the selected band.
  • Page 54 A20-SuperNexus User Guide RTSA (Real Time Spectrum Analyzer) Expand and Collapse Arrows (<-->, --> <--): Tap <--> to expand the selected individual band’s RTSA across OLED screens 2-7. Tap the --> <-- icon in OLED 7 to return to viewing all bands’ RTSAs. Note that expand and collapse arrows are only displayed when more than one band is active.
  • Page 55 A20-SuperNexus User Guide RTSA (Real Time Spectrum Analyzer) 6. Antenna Options: Selects which antenna (Ant) signals are displayed, dependent on which Antenna Pair is selected in the box above. Changes are displayed in real time as the list is scrolled. a.

  • Page 56: Chapter 13: Scan Mode

    A20-SuperNexus User Guide Scan Mode Chapter 13: Scan Mode Use Scan mode to view the whole or any section of the 169 MHz - 1525 MHz spectrum. Scan mode makes it quick and easy to find and assign clean Filter Ranges for each of the three Bands.
  • Page 57 A20-SuperNexus User Guide Scan Mode Note: The scan trace shows the various selectable filter ranges as colored regions at the bottom of the display. Filter ranges can overlap. These overlapping ranges are shown as gray regions. To select a filter range and assign it to a band: ●...

  • Page 58: Chapter 14: Autoassign

    A20-SuperNexus User Guide AutoAssign Chapter 14: AutoAssign Use AutoAssign to find and automatically assign multiple clean frequencies to selected RX channels. AutoAssigned RX Channel frequencies are by default, automatically sent to their assigned NexLinked transmitters. AutoAssign assigns clean frequencies on a per band basis i.e. channels are AutoAssigned within the band they are currently assigned to. For example: ●...
  • Page 59 A20-SuperNexus User Guide AutoAssign How to Start the AutoAssign Process Tap the AutoAssign icon from the Main Menu. If multiple bands are active, the multi-band RTSA view is displayed with the AutoAssign popup in OLED 8. If only one band is active, the individual (expanded) RTSA for that band is displayed. From the multi-band RTSA, tap a band’s expand icon (<-->) to display its individual band RTSA.
  • Page 60 A20-SuperNexus User Guide AutoAssign 4. From an individual band’s RTSA: Tap the display or rotate the Control knob to position the AutoAssign vertical start marker at the frequency where the AutoAssign range should start. Tap the End button in OLED8, then tap the display or rotate the Control knob to position the AutoAssign vertical end marker at the frequency where the AutoAssign range should end.

  • Page 61: Chapter 15: Audio Outputs

    A20-SuperNexus User Guide Audio Outputs Chapter 15: Audio Outputs The A20-SuperNexus has 64 audio outputs which can be fed from up to 32 receiver main/aux paths. Multiple receiver channels can be summed to any audio output by assigning them to the same main or aux path from their 1RX Views. These 64 audio outputs are fed to other devices via the analog, AES, Dante, and MADI physical output interfaces.

  • Page 62: Sample Rate

    A20-SuperNexus User Guide Audio Outputs Sync Reference SuperNexus Sample Rate Setting Internal 48k or 96k BNC In (Word Clock) Determined by the incoming Word Clock frequency BNC In (LTC) 48k or 96k Dante Determined by the Dante In sample rate MADI In Determined by the MADI In sample rate MADI In (96k SMUX)

  • Page 63: A20-Opto Setup

    A20-SuperNexus User Guide Audio Outputs 15.4 A20-Opto Setup Ungrayed when an A20-Opto is connected. This button accesses various settings for the A20-Opto. See A20-Opto 15.5 Dante Outputs The A20-SuperNexus Dante Outputs 1-64 (Dante transmit channels) are fed directly 1:1 from Audio Outs 1-64 Use Dante Controller running on a MAC or PC computer to route A20-SuperNexus’s Dante outputs to any Dante device on the network.

  • Page 64: Analog Outputs

    A20-SuperNexus User Guide Audio Outputs 15.7 Analog Outputs The A20-SuperNexus has 32 balanced analog outputs on 8x RJ45 connectors conforming to AES72 Type 1M wiring. Shielded CAT cable must be used to provide a common ground for the twisted pairs. The analog outputs can be set to line, -10, mic, or Guitar level and can be sourced from A20-SuperNexus audio outs or Dante inputs in blocks of 8 channels.

  • Page 65: Tone Generator

    A20-SuperNexus User Guide Audio Outputs 15.9 Tone Generator Enable the Tone Generator to send a tone (sine wave) at a specific level and frequency to selected RX Channel outputs. The tone level can be adjusted from -20 to 0 dBFS and the tone frequency from 10 Hz to 20 kHz. When the Tone toggle is enabled, a popup appears confirming whether to turn on the tone or not.

  • Page 66: Headphone Output

    A20-SuperNexus User Guide Audio Outputs 15.10 Headphone Output The A20-SuperNexus’s 3.5 mm and ¼” stereo headphone outputs provide monitoring of the Nexus’s receiver channels or Dante inputs. ● Set headphone volume [-40 to 40 dB] by rotating the HP knob. HP volume is briefly displayed in screen 1. ●...

  • Page 67: Chapter 16: Timecode

    A20-SuperNexus User Guide Timecode Chapter 16: Timecode With NexLink, the A20-SuperNexus can simultaneously sync multiple Astral transmitters when they are set to REC only or REC+RF mode. This feature ensures zero-frame drift between multiple recording transmitters, making it easy to synchronize them in post especially when the free SD-Utility software tool (https://www.sounddevices.com/sd-utility-v2-00/) is used to conform and merge the individual Astral transmitter recordings into a single polyphonic wav file.

  • Page 68: Chapter 17: Network

    A20-SuperNexus User Guide Network Chapter 17: Network The A20-SuperNexus supports both Dante AOIP and control over IP. The built-in web server allows the A20-SuperNexus to be controlled via the Web App running via a web browser on any computer, tablet, or smartphone. From the Main Menu, tap the Network icon to access the Network menu.

  • Page 69: Dante And Control Ip Settings

    A20-SuperNexus User Guide Network When Dante Redundancy is enabled, each of the four ports have the following options: ● Disabled ● Dante Primary ● Dante Secondary ● Control ● Dante Pri. + Control ● Dante Sec. + Control Note: To prevent network conflicts, Control on both Dante Primary and Secondary ports is not allowed simultaneously. Note: Port Configurations are unaffected when loading default or user settings.

  • Page 70: Restart Network, Clear Dante Settings, Dante Status

    A20-SuperNexus User Guide Network 17.5 Restart Network, Clear Dante Settings, Dante Status When Dante settings (SuperNexus Name, Port Configuration, IP settings) are changed, either reboot A20-SuperNexus or tap the Restart Network button. Dante is ready to be used when the Dante status field displays ‘Dante Running’. Tap ‘Clear Dante Settings’ to return Dante settings to factory settings.

  • Page 71: Rf Mirror Mode

    A20-SuperNexus User Guide Network 17.6 RF Mirror Mode RF Mirror Mode allows a second A20-SuperNexus unit to mirror the RF and NexLink settings of a primary A20-SuperNexus such that if the primary unit fails or loses power, the secondary (‘Backup’) unit continues to receive and output audio seamlessly as well as taking over NexLink control of paired Astral transmitters.
  • Page 72 A20-SuperNexus User Guide Network Serving as Primary unit Green The Primary has failed (e.g. loss of power) and the Backup has taken over full NexLink control from the Primary. Country mismatch Yellow Displayed when the Primary and Backup’s country settings do not match. These settings must match before Mirroring can be enabled.

  • Page 73: Chapter 18: Nexlink Menu

    A20-SuperNexus User Guide NexLink Menu Chapter 18: NexLink Menu SuperNexus can wirelessly control and monitor Astral A20 transmitters via NexLink over long distances. Tap the NexLink Menu Icon in the Main Menu to access NexLink settings and the paired A20-Outpost-NL list. 18.1 Pairing a New A20-Outpost-NL The A20-Outpost-NL is a remote NexLink-antenna box.

  • Page 74: Local Nexlink Antennas

    A20-SuperNexus User Guide NexLink Menu 18.3 Local NexLink Antennas Determines whether the front or rear pair of antennas are used for NexLink communication when the NexLink Host is set to ‘Local’. Note that the SuperNexus’s local 2.4 GHz antennas are always used when pairing the SuperNexus to A20-Remote via BLE regardless of the NexLink Host setting.

  • Page 75: Updating A20-Outpost-Nl Firmware

    Note: Set the NexLink Host setting to Local before updating Outpost firmware. Via USB Thumb Drive ● Download the latest. prg update file from the Sound Devices website. ● Copy the .prg file to the root of a SuperNexus formatted USB thumb drive.

  • Page 76: Nexlink Status Alerts

    A20-SuperNexus User Guide NexLink Menu 18.7 NexLink Status Alerts The NexLink Status View allows you to monitor NexLink communication between the A20-SuperNexus and Astral transmitters. This can assist in resolving NexLink issues. Access the NexLink Status View from the 1RX View Gear menu, TX View menu, or, if the channel is sourced from multiple transmitters, from the 1RX View’s Gear menu.

  • Page 77: Chapter 19: System Menu

    A20-SuperNexus User Guide System Menu Chapter 19: System Menu Tap the System Icon in the Main menu to access System settings. 19.1 Pair to A20-Remote App The A20-SuperNexus can quickly change the country setting of all its paired transmitters automatically to make changing locations very easy. To accomplish this, the A20-SuperNexus uses an iPhone/Android app along with a smartphone’s GPS to verify the current location.

  • Page 78: Country

    A20-SuperNexus User Guide System Menu 19.2 Country The Country setting determines which Band Filters, RF frequencies, and transmit powers are legally available for selection in a Country. ● SuperNexus and Astral transmitters must be set to the same Country. ● When the Country setting is changed, A20-SuperNexus must restart for the changes to take effect.

  • Page 79: Frequency Authorization

    A20-SuperNexus User Guide System Menu 19.4 Frequency Authorization Displays information pertaining to frequency authorizations. The button is grayed out if no valid Frequency Authorizations are loaded. See Restricted Frequency Authorization for further details. ● Authorization ID/Status: A Frequency Authorization can be “active” or “inactive”. In either case, the presence of the frequency authorization unlocks in the SuperNexus and paired transmitters the ability to tune to the frequencies and desired RF power levels listed.

  • Page 80: Other System Settings

    A20-SuperNexus User Guide System Menu 19.5 Other System Settings Date/Time The A20-SuperNexus’s Date/Time has two purposes: 1. Sends the date/time to Astral transmitters where the value is used to set the creation time of the Astral transmitter recorded files. 2. Sets the creation date/time of A20-SuperNexus Quick Setup files. Tap Date/Time to bring up the Date/Time popup, then enter MM/DD/YY and HH/MM/SS.
  • Page 81 Macros Tap to configure Astral transmitter and SuperNexus commands to trigger DiGiCo console macros via an AstralComm control network. ‘AstralComm’ is a proprietary protocol specifically designed to trigger DiGiCo console macros from Sound Devices Astral devices. See Macros for detailed setup information.
  • Page 82 A20-SuperNexus User Guide System Menu 5. Audio Off Warnings: When the toggle is off, the A20-SuperNexus does not show a warning popup that audio will stop when switching Bands and when switching to Scan mode. 6. Tx Battery Warnings: When the toggle is On, the SuperNexus flashes all its OLED’s borders red and displays a warning popup to indicate one of the paired transmitters is low on battery.

  • Page 83: Macros - Astralcomm

    19.6 Macros - AstralComm ‘AstralComm’ is a proprietary protocol specifically designed to trigger DiGiCo console macros from Sound Devices Astral devices. Astral transmitters, A20- HH, A20-TX and the A20-SuperNexus receiver can send macro commands over a network to one or more registered DiGiCo consoles to trigger their local macros.

  • Page 84: Digico Console List

    A20-SuperNexus User Guide System Menu 19.6.2 DiGiCo Console List Access the DiGiCo Console List (Macros > OLED 8) to add consoles to which macro commands will be sent. The SuperNexus broadcasts macro commands to all consoles in the list. Up to 10 consoles can be added. Tap Delete to remove consoles from the list. Note: An AstralComm network can consist of up to ten SuperNexus receivers (standalone or in RF Mirror Mode) and ten DiGiCo SD or Quantum consoles.
  • Page 85 A20-SuperNexus User Guide System Menu Name Enter a descriptive name for the command. The default name is ‘Macro’. Up to 20 alphanumeric characters are permitted. Source Selects which receiver channel or TX Group is the source for the macro command. Options include: RX Channel Number (1-n, where ‘n’...

  • Page 86: Macros And Rf Mirror Mode

    A20-SuperNexus User Guide System Menu Command ID Range: None, 1 to 256. The Command ID must correspond with the DiGiCo console Macro's Command ID otherwise the console macro will not be activated. 19.6.4 Macros and RF Mirror Mode Macro commands created on a Primary SuperNexus are mirrored to a Secondary SuperNexus when RF Mirror Mode is activated. Based on whether the DiGiCo Console List is set to be mirrored or not, the system can be configured so that both units send macro commands or only the active unit sends macro commands.

  • Page 87: Chapter 20: Quick Setup Menu

    A20-SuperNexus User Guide Quick Setup Menu Chapter 20: Quick Setup Menu Quick Setup provides a way to save and load A20-SuperNexus settings. Settings are saved to internal memory slots 1-4 or to a USB thumb drive connected to the USB-A port. Save Setup ●...
  • Page 88 A20-SuperNexus User Guide Quick Setup Menu Polarity Gain Antenna Mode A and B Antenna Bias Power for all antenna pairs 1, 2, and 3 A and B Antenna Cascade out for all antenna pairs 1, 2, and 3 Filter Range settings for Band 1, Band 2, Band 3 RF History duration RF History Type NexLink Tuning Mode (Push to Transmitter or manual)
  • Page 89 A20-SuperNexus User Guide Quick Setup Menu Control: DHCP On/Off Dante: DHCP On/Off Control: Static IP address, subnet mask, gateway Dante: Static IP address, subnet mask, gateway. (In Redundancy Mode, IP address data is stored for both Primary and Secondary) Web Show Mode Other Brightness Screensaver...

  • Page 90: Chapter 21: Web App

    A20-SuperNexus User Guide Web App Chapter 21: Web App Remote control the A20-SuperNexus from anywhere in the world using the A20-SuperNexus Web App, a browser-based remote-control application for the A20-SuperNexus that can be run on any computer, tablet, or smartphone. It duplicates virtually all the functions available from the A20-SuperNexus front panel.

  • Page 91: Web Overview

    A20-SuperNexus User Guide Web App 21.2 Web Overview 1. SuperNexus Name and Menu Tab Bar: Displays SuperNexus name and provides access to the various menus. Click a menu tab to display its menu. 2. RX Channel: Displays important parameters for each RX channel. Click to access a detailed view of the RX channel. 3.

  • Page 92: Menu Tabs

    A20-SuperNexus User Guide Web App 21.3 Menu Tabs 21.3.1 Home Displays an overview of all receiver channels. See above. Tap an RX Channel to view its detailed view, aka 1RX View 21.3.1.1 1RX View ● Duplicates the functionality of the A20-SuperNexus’s front panel 1RX View. See View.

  • Page 93: Tx List

    A20-SuperNexus User Guide Web App 7. RF History: Displays the RF History data. See History. Transmitter Control Buttons: NexLink transmitter control buttons Receiver and Transmitter Settings: RF Power only applies to the transmitter. Modulation, Mode, and Privacy apply to both transmitter and receiver.
  • Page 94 A20-SuperNexus User Guide Web App 21.3.3 RF Sets Antenna Mode, Bands 1-3, Antenna Pairs 1-3, RF and Waterfall History parameters. See RF Menu...

  • Page 95: Rtsa

    A20-SuperNexus User Guide Web App 21.3.4 RTSA For the most part, the Web App’s RTSA duplicates the functionality of the A20-SuperNexus’s front panel RTSA. See RTSA. Antenna Mode determines the number of bands displayed. Expand an individual band’s RTSA by clicking its ‘+’ icon. Drag the dividers between each band to resize bands.
  • Page 96 A20-SuperNexus User Guide Web App Tip: With smartphones, tablets, and computers with trackpad devices, pinch vertically to zoom in/out vertically, pinch horizontally to zoom in/out horizontally and pinch diagonally to zoom in/out horizontally and vertically. With a mouse, rotate the mouse wheel to zoom in/out and drag to move around the trace. 1.
  • Page 97 A20-SuperNexus User Guide Web App 2. Exit Button: Tap or click the ‘X’ to exit the RTSA and return to the Home view. 3. Waterfall Options: Select between Off, Mini Waterfall (displays the waterfall trace above the RTSA) or Waterfall overlay (displays the waterfall on top of the RTSA).
  • Page 98 A20-SuperNexus User Guide Web App Scan View 12. Start/Stop Button: Starts and stops the RTSA or Scan. 13. Filter Range Display and Selector: Click to select a new filter range for the selected Band (1, 2, or 3) 14. Receiver Channel Number, Transmitter Name, and Shortcut: Click the receiver channel name/number to jump directly to the receiver’s 1RX View.

  • Page 99: Audio

    A20-SuperNexus User Guide Web App 21.3.5 Audio Sets sync reference, sample rate, AES, analog, MADI output, tone generator, and headphone output routing. Use the RX channel metering, gain level sliders, and Global RX Output Gain to optimize audio output levels. 21.3.6 NexLink NexLink related settings including setup of the A20-Outpost-NL.

  • Page 100: Quick Setup

    A20-SuperNexus User Guide Web App 21.3.7 Quick Setup Load and save settings files for quick configuration of the A20-SuperNexus’s settings. See Quick Setup Menu 21.3.8 System Power, security, lockout notification settings and A20-SuperNexus System Info. See System Menu...

  • Page 101: Chapter 22: Updating Firmware

    A20-Opto needs to be physically unlinked and removed during the update. Chapter 23: Channel Expansion Licenses The A20-SuperNexus can be expanded from 16- to 24- or 32-channels by purchasing one or two 8-channel Expansion Licenses from the Sound Devices website. Permanent or rental licenses (1-week or 30-day) are available.

  • Page 102: Chapter 24: Astral Wireless Guitar System

    Chapter 24: Astral Wireless Guitar System The Sound Devices Astral Wireless Guitar System is a paradigm-shift in sonic purity and range for the demanding, professional guitarist/bassist. It is designed to replace a premium guitar cable without altering the tone or feel of the sacred guitar/amp interaction. *Please refer to the...
  • Page 103 A20-SuperNexus User Guide Astral Wireless Guitar System Additional Features ● Adjustment of these parameters from the A20-TX transmitter or remotely from the A20-Nexus receiver.  ● 0 dB gain from ¼" input to ¼" output, just like a cable - the amplifier or pedalboard sees your guitar's output exactly. ●...

  • Page 104: Chapter 25: Accessories

    A20-SuperNexus User Guide Accessories Chapter 25: Accessories 25.1 Included ● 2x A20-Monarch Antennas ● 2x Articulating Arm with ¼”-20 mount for mounting A20-Monarch Antennas ● 2x 72” BNC to BNC RG-58 Antenna Cables ● 2x 2.4 GHz Antennas, SMA-M ● USB-C 3.0 to USB-C 3.0 cable ●...

  • Page 105: A20-Opto

    A20-SuperNexus User Guide Accessories 25.2.1 A20-Opto The A20-Opto is an optional expansion box for the A20-SuperNexus that adds Optocore, MADI, AES, and analog outputs plus GPIO functionality. The A20-Opto comes in two versions, the A20-Opto-HMA and A20-Opto-ST. The only difference between the A20-Opto-HMA and A20-Opto-ST is the connector type used for the Optocore audio outputs, HMA or ST respectively.
  • Page 106 The connector type depends on the A20-Opto model, A20-Opto-HMA or A20-Opto-ST. Dual Optocore connectors for connection to DiGiCo consoles. The Optocore connectors can optionally be swapped between HMA, ST or OpticalCon connectors, and the internal SFP modules can be changed to different wavelengths using special disassembly instructions - contact Sound Devices. ●...
  • Page 107 A20-SuperNexus User Guide Accessories 5: MADI Outputs 3 and 4 Dual BNCs for outputting 48 or 96 kHz MADI. Hi-Speed and SMUX 96 kHz MADI streams are supported. 6: WCK Sync Input BNC for connecting a Wordclock sync reference for the MADI Out 3 and 4 digital outputs. 7: GPIO 16 user-configurable GPIO ports 8: AC Power Input...
  • Page 108 A20-SuperNexus User Guide Accessories ● WCK In [Uses the A20-Opto’s WCK BNC input as sync reference for its MADI out 3&4]. This allows the MADI outs to sync to a different clock domain than the A20-SuperNexus. ● [48 kHz SRC’d to A20-SuperNexus Sync Ref]. If A20-SuperNexus’s internal sample clock is 48k, the clock is passed through and if 96 kHz, it is divided by 2.
  • Page 109 A20-SuperNexus User Guide Accessories GPIO ‘n’: Lists the following voltage triggering options: Inputs ● Input, Latch (Triggers action to change state (ON or OFF) when the GP input transitions from low to high). This is the default for GPIO 1-8. ●...
  • Page 110 A20-SuperNexus User Guide Accessories Target/Source Channel: ● When the GPIO is configured as an input (GPI) using the GPIO ‘n’ button, the Target Channel button is displayed. This selects which RX channels the chosen Action targets. ● When the GPIO is configured as an output (GPO) using the GPIO ‘n’ button, the Source Channel button is displayed. This selects which RX channel(s) conditions affect the GPO.
  • Page 111 A20-SuperNexus User Guide Accessories A20-Opto Accessories Included ● 1x Bridge board Assembly ● Power Cord - US ● Power Cord - Australia ● Power Cord - EU cord (Schuko) ● Power Cord - UK ● 2x Double Rack Ears ● 2x Rear Accessory Plate ●...

  • Page 112: A20-Outpost-Nl

    25.2.2 A20-Outpost-NL The A20-Outpost-NL is a remote NexLink-antenna box. NexLink is Sound Devices’ proprietary long-distance remote control of Astral transmitters. This game-changing system allows remote control of all parameters on the transmitters – and has a distance far exceeding the RF audio link. Since NexLink operates at 2.4 GHz, its antennas cannot be remote-mounted more than a few inches due to cable loss –...
  • Page 113 A20-SuperNexus User Guide Accessories Outpost-NL Safety Information Class A: Warning: Operation of this equipment in a residentialenvironment could cause radio interference. Class A FCC Statement: Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.

  • Page 114: A20-Monarch Antenna

    A20-SuperNexus User Guide Accessories 25.2.3 A20-Monarch Antenna The A20-SuperNexus ships with two A20-Monarch, omnidirectional, wide-bandwidth (470-1525 MHz) antennas. These antennas provide uniform coverage and gain across the exceptionally wide SpectraBand tuning range of A20-SuperNexus. Each antenna is paired with a multi-function clamp and articulating arm, as well as an RG58 BNC-M to BNC-M cable (72 in.) When purchased as a separate accessory, the A20-Monarch antenna also includes an RG174 BNC-M to SMA-M cable.

  • Page 115: Chapter 26: Restricted Frequency Authorizations

    1435-1525 MHz range. If granted, the license is normally assigned for a specific location and a specific time range. Sound Devices encourages all wireless operators to obtain a Part 74 license, and specifically to make sure applicable parts of the 600 MHz and 950 MHz range are included with their license application.

  • Page 116: Chapter 27: Connector Pin Assignments

    A20-SuperNexus User Guide Connector Pin Assignments Chapter 27: Connector Pin Assignments Connector Pin Assignments Notes Center pin - signal Unbalanced (LTC/WCK input} Sleeve - ground 75-ohm cable recommended (MADI input (sync Center pin - signal Unbalanced only) and MADI digital Sleeve - ground 75-ohm audio outputs)

  • Page 117: Chapter 28: Specifications

    A20-SuperNexus User Guide Specifications Chapter 28: Specifications All specifications are subject to change without prior notice. For the latest information available on all Sound Devices products, visit our website: www.sounddevices.com 28.1 A20-SuperNexus Specifications Patents: The A20-SuperNexus is protected by US patents US10678294B2, US20190166523A1, International patent WO2018022209A1, and several patents pending.
  • Page 118 A20-SuperNexus User Guide Specifications Antenna Inputs ● Multiple Antenna Modes switchable between Diversity, 4Versity, 4Versity + 1 Pair, HexVersity, 3-Zone Combiner, 2-Zone Combiner + 1 Pair, 3-Way Diversity, Diversity + 1 Pair Audio Latency ● Standard modulation = 2 ms, analog or digital outputs ●...
  • Page 119 A20-SuperNexus User Guide Specifications Sync ● LTC / Wordclock, input impedance 75-ohm, BNC ● Dante ● MADI, unbalanced BNC, 75-ohm output impedance Network Dante Audio-Over-IP • 32 input/output channels. • Primary and Secondary ports for Dante Redundancy Control • Web-based control and monitoring of all A20-SuperNexus settings •...
  • Page 120 A20-SuperNexus User Guide Specifications Powering ● AC Input: 100-240 VAC, 200W ● DC Input: 10-18 VDC, 200W ● PoE+ out (max 30W) Environmental Operating Temperature Range ● -10 to 40 C; 14 to 104 F Dimensions (H x W x D) ●...

  • Page 121: A20-Opto Specifications

    A20-SuperNexus User Guide Specifications A20-Opto Specifications 28.2 Audio Outputs ● RJ45 connectors conforming to AES72 Type 1M pin-out standard, balanced connection Analog Output Level ● Line: +20 dBu for 0 dBFS ● -10: +6 dBu for 0 dBFS ● Mic: -20 dBu for 0 dBFS Digital Audio Output ●...

  • Page 122: A20-Outpost-Nl Specifications

    A20-SuperNexus User Guide Specifications 28.3 A20-Outpost-NL Specifications Network Connections ● 1x RJ45 port and 1x SFP port: For NexLink control connection to SuperNexus and Outpost-NL firmware updates NexLink Protocol ● 2.4 GHz, proprietary frequency-hopping backlink control of transmitters over long distance Connections ●...

  • Page 123: A20-Monarch Specifications

    A20-SuperNexus User Guide Specifications 28.4 A20-Monarch Specifications Frequency range ● 470 MHz - 1600 MHz Gain ● 2.2 dBi Pattern ● Omnidirectional Return Loss ● Better than 15 dB across entire 470 - 1600 MHz range Mounting Threads ● ¼”-20 Dimensions (H x W x D) ●...

  • Page 124: Chapter 29: Note On Rf Interference

    Chapter 31: Warranty Sound Devices, LLC warrants the items listed above against defects in materials and workmanship for a period of ONE (1) year from date of original retail purchase. Users who register their product directly with Sound Devices Technical Support using the online form or by phone, will receive an additional ONE (1) year of warranty coverage, extending the complete warranty period to TWO (2) years from the date of original retail purchase.

  • Page 125: Chapter 32: Legal Notices

    ESSENTIAL PURPOSE. The “wave” logo is a registered trademark of Sound Devices, LLC. Windows is a registered trademark of Microsoft Corporation in the U.S. and other countries. Bluetooth LE is a registered trademark of Bluetooth SIG, Inc. Android is a registered trademark of Google. iPad, iPhone, and iOS are registered...
  • Page 126 A20-SuperNexus User Guide Legal Notices FCC Conformity NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate Band frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to Band communications.
  • Page 127 2) ce dispositif doit accepter toute interférence, y compris les interférences qui peuvent causer un mauvais fonctionnement de l’appareil. WEEE Statement If you wish to discard a Sound Devices product in Europe, contact Sound Devices (England) for further information.
  • Page 128 A20-SuperNexus User Guide Legal Notices Chinese Conformity This information is presented to comply with the requirements of Chinese law SJ/T11363-2006 此資料為顯示符合中國法律SJ/T11363-2006 的要求。...

  • Page 129: Chapter 33: Declaration Of Conformity

    Chapter 33: Declaration of Conformity Manufacturer’s Name: Sound Devices, LLC Manufacturer’s Address: E7556 State Road 23 and 33 Reedsburg, WI 53959 USA We, Sound Devices LLC, declare under our sole responsibility that the product Product Name: A20-SuperNexus Model Number: A20-SuperNexus...
  • Page 130 A20-SuperNexus User Guide Declaration of Conformity Post Office Box 576 E7556 State Rd. 23 and 33 Reedsburg, Wisconsin 53959 USA support@sounddevices.com +1608.524.0625 main 800.505.0625 toll free (U.S. only) www.sounddevices.com...