Sound Devices A20-Mini Manual de usuario
A20-Mini
Digital Wireless Transmitter
with GainForward and SpectraBand Technologies
User Guide v6.00
Table of Contents
Welcome to the A20-Mini 3
SpectraBand 4
Panel Views 4
Power 7
A20-Mini Holster 8
Introduction to A20-Remote 9
A20-Remote Overview 10
Manage Transmitters 13
Transmitter List 15
Transmitter View 19
Group Control 23
Group Setup 23
Group View 24
Connecting Lavalier Microphones to A20-Mini 28
Tuning A20-Mini and the Receiver 28
GainForward 28
Recording WAV Files 28
Jamming Timecode on A20-Mini 29
File Transfer to a Computer 29
Updating A20-Mini Firmware 30
SD-Utility 31
PowerStation-8M 34
PowerStation-8M Specifications 36
A20-Mini Specifications 37
Antenna Guide 39
Servicing the A20-Mini 40
Warranty 40
Included Accessories 40
Legal Notices 41
Declaration of Conformity 44
A20-Mini User Guide 2
Welcome to the A20-Mini
Sound Devices’ first miniature transmitter incorporates state-of-the-art features such as full remote control via the A20-Remote app,
long range modulation, GainForward Architecture, SpectraBand’s 470 MHz – 1525 MHz tuning range, internal 32-bit float recording,
and more. The A20-Mini is fully compatible with the A20-RX and the A10-RX.
● Worldwide tuning range of 470 MHz – 1525 MHz.
● Full remote control of the Mini via A20-Remote companion app.
● State-of-the-art 100% digital long-range modulation delivers the longest transmission distance of any system on the
market.
● GainForward Architecture: set the Mini’s gain levels via trim control (with an 8-Series) or at the A20-RX/A10-RX (other
mixers).
● Full 10 Hz – 20 kHz audio bandwidth; 100% digital RF modulation and transmission. Same excellent range and audio
quality as the A10-TX.
● Built-in 32-bit float, 48 kHz recorder with 64 GB storage for over 80 hours of record time.
● USB-C for file offload and optionally conform/convert with SD-Utility.
● Powering via Lithium AAA or NP-BX1 (Li-Ion) batteries with built-in charging for NP-BX1.
● Internal timecode generator with supercapacitor backup can be jammed via USB-C.
● Water-resistant with a rounded form factor.
Our friendly and knowledgeable support team, based in the USA and the UK, is here for all your questions and comments. Our job is
to make your job easier.
We are honored to be part of your kit.
Sincerely,
Sound Devices
A20-Mini User Guide 3
SpectraBand
The A20-Mini introduces SpectraBand, a technology that enables the A20-Mini to tune over a super wide range of 470-1525 MHz.
Tuning within this range varies by country. For instance:
In the USA, the available frequency ranges are:
●The entire UHF TV band (470-608 MHz)
●The 600 MHz guard band (614-616 MHz)
●The 600 MHz duplex gap (653-663 MHz)
●The 900 MHz ISM Band (902-928MHz)
●The 950 MHz STL Band (941.5-960 MHz)
●The 1.5 GHz AFTRCC band (1435-1525 MHz), with an appropriate license.
In the UK, the available frequency ranges are:
●The core UK UHF TV band (470-702 MHz)
●The 800 MHz duplex gap (823-832 MHz)
●The 800 MHz guard band (863-865 MHz)
●The DME bands (961-1015 MHz, 1045-1075 MHz, 1105-1154 MHz), with an appropriate license.
●The IMT band (1518-1525 MHz)
Please see https://www.sounddevices.com/frequency-tables/ for further detailed information on which frequency ranges are
available for each country.
Panel Views
Top and Bottom Panels
1: Battery Power LED
Indicates the state of battery life.
Green = Good
Orange = Marginal, about an hour of battery life remaining.
Red = Low, 15-20 minutes of battery life remaining.
Flashing Red = Critically low, RF, audio, and recording disabled.
Blue = Batteries inserted. Power LED is blue when batteries are inserted and goes off when the unit is ready to be powered on
by the red button or from the A20-Remote app.
2: Antenna Connector
SMA connector. Attach antenna with a length specific to the frequency in use. Using the wrong length of antenna reduces RF range.
See Antenna Guide for more information.
3: USB-C Port
Multifunction port used for:
A20-Mini User Guide 4
Powering A20-Mini
Charging internal Sony NP-BX1 rechargeable battery (not included)
Timecode input and output
Transferring files to and from a computer
4: Charge/Pairing/Record/Media/Timecode Jam LED
Indicates charging, Bluetooth pairing, recording, media activity, and timecode status.
Solid Orange = Charging
Solid Green = Charging complete
Off = No charging
Solid Red = Recording
Flashing Red = Recording stopped due to full media or recording error
Flickering Blue = Media activity
Flashing Blue = Timecode Jam in progress
Pulsing Blue = Timecode Output active
Rapid Flashing Blue = Bluetooth Pairing
5: Lavalier Microphone Input
3-Pin LEMO connector for connecting a lavalier microphone. Can be set to power transmitter on and off via lav mic connection and
disconnection.
6: Audio/Timecode LED
Audio/Timecode LED indicates audio activity and timecode status.
Green (variable intensity) = Audio activity from lavalier microphone
Red = Microphone clipping
Solid Blue = Microphone is muted
Pulsing Blue = Timecode 00 frame (only when unit is off)
Note: Due to the high dynamic range of the microphone input, under normal use the audio LED should never light up red. If it does,
this is an indicator that the microphone itself (not the mic preamp) is clipping and the audio level should be attenuated acoustically
by moving the mic capsule or using a lower sensitivity microphone.
7: Bottom Panel Charge/Pair/Record/Media/Timecode LED
LED indicates charging status, timecode sync, Bluetooth pairing, recording, and media activity. Positioned on the bottom of the
A20-Mini to make it easily visible when slotted into the optional PowerStation-8M.
Solid Orange = Charging
Solid Green = Charging complete
Off = Not charging
Solid Red = Recording
Flashing Red = Recording stopped due to full media or recording error
Flickering Blue = Media activity
Flashing Blue = Timecode Jamming
Pulsing Blue = Timecode 00 frame (when unit is off and jammed timecode is held or when Timecode Output is active following
a jam)
Rapid Flashing Blue = Bluetooth Pairing
Front, Front (Door Open), Left, Right and Back Panels
A20-Mini User Guide 5
1:Battery Door
Access to the battery compartment and red button.
2:Door Latch
Slide left to unlock the battery door.
3:Battery Compartment
Accepts either 3x AAA Lithium batteries or one rechargeable Sony NP-BX1 Li-Ion battery. Sound Devices recommends using
genuine Sony NP-BX1 or Energizer AAA Lithium primary batteries for best performance. Alkaline and NiMH are not recommended
because of compromised run times.
4:Red Button
This button is used to power the A20-Mini on or off and enter Bluetooth Pairing mode.
Power On = Press and release button.
Power Off = Press and hold button for 3 seconds.
Pairing Mode = While A20-Mini is off, press and hold button for 5 seconds. The Pairing LED on the bottom and top panel
flashes blue rapidly while in Pairing mode.
A20-Mini User Guide 6
Power
The A20-Mini powers via USB-C, 3x Energizer AAA Lithium primary batteries, or one Sony NP-BX1 Li-Ion battery.
Opening the Battery Door
To open the A20-Mini battery door:
1. Slide the door latch to the left to unlock the battery door.
2. Lift the battery door using the indented space on the bottom right-hand side of the battery door.
Closing the Battery Door
To close the A20-Mini battery door:
1. Slide and hold the door latch to the left.
2. Close the battery door.
3. Release the door latch to lock the battery door.
Powering from AAA or Sony NP-BX1 Li-Ion
To power the A20-Mini using AAA batteries or Sony NP-BX1 Li-Ion:
1. Open the A20-Mini battery door.
2. Insert three AAA batteries or one Sony NP-BX1 Li-Ion into the battery compartment, taking care to place the batteries in
the correct orientation.
3. AAA batteries should be inserted with the negative side (without springs) first.
4. Sony NP-BX1 should be inserted with the contact side (with springs) first.
5. Power LED is blue when batteries are inserted and goes off when the unit is ready to be powered on. Press and release
the red button to power on the A20-Mini.
6. Close the A20-Mini battery door.
7. To power off the A20-Mini, press and hold the red button for three seconds. The Power LED flashes rapidly while the
A20-Mini powers off. The Power LED is off when the unit is off.
8. To remove the batteries, open the battery door and remove the AAA or NP-BX1 battery with the non-spring side first.
USB-C
USB-C can be used to power the A20-Mini and/or to charge inserted Sony NP-BX1 batteries. The A20-Mini does not charge AAA
batteries. USB-C is the priority power source whenever connected.
To power the A20-Mini via USB-C:
1. Connect a USB power source to the A20-Mini’s USB-C port.
2. Open the battery door then press the red button.
3. To power the A20-Mini off, press and hold the red button for three seconds.
To charge the Sony NP-BX1 from USB-C:
1. Open the battery door and insert a Sony NP-BX1 into the battery compartment.
2. Connect a USB power source to the A20-Mini USB-C port.
3. The Charge/Pair/Rec LED glows solid orange while the battery is charging. The Charge LED turns solid green when
charging is complete.
The A20-Mini is fully operational when charging batteries from USB-C.
PowerStation-8M
The PowerStation-8M is an optional accessory for the A20-Mini. An A20-Mini using a Sony NP-BX1 battery can be inserted into a
charging bay of the PowerStation-8M to charge the battery. See PowerStation-8M for more details.
Auto Power On and Off with PowerStation-8M
The A20-Mini automatically powers off when inserted into a charging bay of the PowerStation-8M. To save time from having to
manually power on the A20-Mini, use the Power On When Removed from the PowerStation-8M feature. When this feature is
selected, removing an A20-Mini from the PowerStation-8M immediately powers on the transmitter. This feature is turned on or off in
the A20-Remote application. See A20-Remote for more details.
Auto Power with Lav Mic Connection
When Auto Power with Lav Mic Connection is selected, connecting a lavalier microphone to the A20-Mini automatically powers on
the transmitter. Removing the LEMO connection automatically powers the A20-Mini off.
This feature can be turned on or off in the A20-Remote application. See A20-Remote for more details.
A20-Mini User Guide 7
Estimated Battery Runtime
The A20-Mini can operate for up to 5.5 hours. Battery rundown times will vary depending on setup and workflow. Utilize the
A20-Mini’s ability to power the unit on and off remotely from the A20-Remote app to extend battery runtime.
A20-Mini Holster
The A20-Mini ships with an easy-to-assemble holster. The A20-Mini can be inserted with the antenna and lavalier microphone
coming out of the top or bottom of the holster.
Inserting the A20-Mini in the A20-Mini Holster
Slide the A20-Mini into the A20-Mini Holster’s pocket in the
orientation that works best for the situation. Fold the security flap over, securing the transmitter in place using the hook-and-loop
fastener strips. Use the clip on the back of the holster to attach the transmitter to the talent’s garments.
A20-Mini User Guide 8
Introduction to A20-Remote
A20-Remote is an application for Android/iOS phones and tablets designed to pair with the A20-Mini. All settings for the A20-Mini
are conveniently controlled using A20-Remote.
When connected via Bluetooth LE to the A20-Mini, A20-Remote offers control and display of all A20-Mini parameters, including:
● Power on and off the A20-Mini
● Monitor battery status
● Frequency, Modulation, and RF power setup
● Monitor audio signal presence
● Microphone mute
● Transport controls (Record, Stop)
● Timecode display
● Media formatting and monitoring of remaining space
● A20-Mini settings (Mode, power options, and more)
● Group control of powering, recording, and more
Download and install the A20-Remote app from the Google Play Store or Apple App Store.
https://www.sounddevices.com/a20-remote
A20-Remote has the following minimum operating requirements: Android tablets and phones running Android 8+, or
iPad and iOS devices running iOS 13+. The device must have Bluetooth and Location Services on in order to connect with an
A20-Mini.
IMPORTANT: The mobile device’s location is used to determine available frequencies, RF power levels, and TV channel mapping of
the A20-Mini. The Country setting is automatically set using the mobile device’s Location Services.
The mobile device’s system date and time are used in the metadata of recorded files.
A20-Mini User Guide 9
A20-Remote Overview
Tablet View
A20-Mini User Guide 10
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