Focusrite RedNet D16R MkII User manual

User Guide
www.focusrite.com
v1.0

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CONTENTS
About this User Guide ..................................................................... 3
Box Contents .............................................................................. 3
Safety Warning ............................................................................ 3
INTRODUCTION .............................................................................. 4
INSTALLATION GUIDE ........................................................................ 5
RedNet D16R MkII Connections and Features ............................................. 5
Front Panel ........................................................................... 5
Rear Panel ........................................................................... 6
Physical Characteristics................................................................... 8
Power Requirements ...................................................................... 8
REDNET D16R MKII OPERATION ............................................................. 9
First Use and Firmware Updates .......................................................... 9
Digital Clocking............................................................................ 9
Pull Up and Pull Down Operation.......................................................... 9
Level Controls ............................................................................. 9
Sample Rate Converters................................................................... 9
OTHER REDNET SYSTEM COMPONENTS ....................................................10
REDNET CONTROL 2 ........................................................................10
Status Icons ..............................................................................11
ID (Identification) .........................................................................11
Tools Menu ...............................................................................11
Signal Routing .......................................................................12
Clock................................................................................12
SRCs ................................................................................12
AES3 Cut ............................................................................13
APPENDIX...................................................................................14
Connector Pinouts........................................................................14
Ethernet Connector ..................................................................14
DB25 (AES59) Connector..............................................................14
XLR Connectors......................................................................14
PERFORMANCE AND SPECIFICATIONS .....................................................15
Focusrite Pro Warranty and Service ......................................................17
Registering Your Product .................................................................17
Customer Support and Unit Servicing ....................................................17
Troubleshooting ..........................................................................17

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About this User Guide
This User Guide applies to the RedNet D16R MkII AES3 interface. It provides information about
installing and using the unit and how it can be connected into your system.
Should this User Guide not provide the information you need, then please consult:
https://pro.focusrite.com/technical-support, which contains a comprehensive collection of common
technical support queries.
Dante™ and Audinate™ are registered trademarks of Audinate Pty Ltd.
Box Contents
• RedNet D16R MkII unit
• 2 x IEC AC mains cables
• Safety information cut sheet
• Focusrite Pro Important Information Guide, which provides links to:
RedNet Control
RedNet PCIe drivers (included with RedNet Control download)
Audinate Dante Controller (installed with RedNet Control)
Dante Virtual Soundcard (DVS) Token and download instructions
Safety Warning
Warning – Shock Hazard
RedNet D16R MkII incorporates dual mains power supplies. Always ensure that both power
supply cables are disconnected from the rear panel before opening unit (eg., for servicing)

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INTRODUCTION
Thank you for purchasing the Focusrite RedNet D16R MkII.
RedNet D16R MkII is a 1U 19in rack-mount interface featuring 16 channels of AES3 connectivity to
and from a Dante audio network – perfect for bridging between digital consoles, power amplifiers or
any other AES3 equipped audio equipment and a Dante network.
Dual Ethernet connectors (primary and secondary) on the rear-panel allow maximum network
reliability with seamless switchover to a standby network in the unlikely event of a network failure.
These ports may alternatively be used to daisy-chain additional units when operating in Switched
mode.
Redundant power supplies (PSU A and B) with separate input sockets on the rear panel allow one
supply to be connected to an uninterruptible source. Each PSU’s status can be monitored remotely
over the network or from the front panel.
RedNet D16R MkII provides independent level trim on each input and output channel, and a Sample
Rate Converter (SRC) on each input pair allows instant operation with any AES3 source irrespective
of the sample rate or clocking of the Dante audio network.
Audio interface is provided by two standard 8-channel (AES59) Combined Digital I/O DB25
connections plus a pair of XLR3 connectors. The XLR3 input replaces input channels 1 and 2 on the
DB25 connector, while the XLR3 output replicates DB25 output channels 1 and 2.
S/PDIF input and outputs are provided on RCA connectors; ideal for connecting CD players or solid-
state recorders. The input replaces channels 3 & 4 in the DB25 connector while the output can be
assigned to replicate any adjacent odd/even pair.
Word Clock I/O on BNC connectors allows synchronisation of the Dante network to house clock, or
syncing external equipment to the Dante network. DARS reference can also be accepted via the XLR-
3 input connector.
The RedNet D16R MkII front panel contains a set of LEDs to confirm network status, sample rate,
clock sources and signal presence on both input and output.

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1 AC Power Switch
2 Power Indicator(s)
• PSU A – Illuminates when an AC input is applied and all DC outputs are present.
• PSU B – Illuminates when an AC input is applied and all DC outputs are present.
When both supplies are functioning and have AC inputs PSU A will be the default supply.
3 RedNet Network Status Indicators:
• PRIMARY – Illuminates when the device is connected to an active Ethernet network. Also
illuminates to indicate network activity when operating in switched mode.
• SECONDARY – Illuminates when the device is connected to an active Ethernet network.
Not used when operating in Switched mode.
• LOCKED – Illuminates when a valid sync signal is received from the network, or when the
RedNet D16R MkII unit is Network Master (or there is a sync to an external clock).
4 RedNet Sample Rate Indicators
Five orange indicators: 44.1 kHz, 48 kHz, x2 (multiple of 44.1 or 48), x4 (multiple of 44.1 or 48)
and sample rate PULL UP/DOWN. These Indicators illuminate individually or in combination
to indicate the sample rate being used. For example, for a 96kHz Pull Up/Down setting, the
48kHz, x2 and Pull Up/Down indicators will illuminate.
5 Signal Presence LEDs
LEDs indicate whether an input or an output signal is present for each odd/even channel pair.
Illuminate at -126 dBFS.
6 Clock source
Five orange indicators: Word Clock, DARS, Input 1-2, Input 9-10 and Internal. Whichever is
lit identifies the clock reference being used.
When an incoming clock source is invalid, the ‘Locked’ indicator will flash to indicate that the
unit has reverted to using its internal clock.
INSTALLATION GUIDE
RedNet D16R MkII Connections and Features
Front Panel
165432

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1 IEC Mains Inlet A
Standard IEC receptacle for connection of AC mains. RedNet D16R MkIIs feature ‘Universal’
PSUs, enabling them to operate on any supply voltage of between 100 V and 240 V.
2 IEC Mains Inlet B
Input connector for backup mains power source. Power supply B remains on standby but will
seamlessly take over if PSU A develops a fault or loses its mains input supply.
If an uninterruptable supply (UPS) is available, it is recommended that this is applied to input B.
3 Primary Network Port
RJ45 etherCON connector for the Dante network. Use standard Cat 5e or Cat 6 network cables
to connect RedNet D16R MkII to the Ethernet network switch. Adjacent to each network socket
are LEDs which illuminate to indicate a valid network connection plus network activity.
4 Secondary Network Port
Secondary Dante network connection where two independent Ethernet links are being used
(Redundant mode) or an additional port on an integral network switch on the primary network
(Switched mode).
5 Word Clock Out
BNC connector provides an output of the chosen system clock reference – can be switched
between base rate or network rate.
6 Word Clock In
Allows synchronisation of the Dante network to house word clock.
7 S/PDIF:
• OUT – Provides any adjacent odd-even signal pair (eg., 3–4, 11–12). Software selectable.
• IN – Can be used as an alternative input for audio channels 3–4. Software selectable.
Rear Panel
910 1 2 3 4 5 6 7 8

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Rear Panel . . .
8 AES3 Out
Permanent AES3 output of audio channel pair 1–2 on XLR-3 male connector.
9 AES3 In (DARS)
XLR-3 female connector. Can be used as an alternate AES3 audio source for channels 1–2.
Software switchable. May also be used as a clock source when fed with either AES3 or DARS
(Digital Audio Reference Signal – AES3 distributed clock as per AES11). Software selectable.
10 AES3 1–8 In/Out
Eight AES3 input and output channels per connector. DB25 female connectors wired to AES59
Combined Digital I/O standard.
See page Appendix 1, page 14 for connector pinouts.
910 8

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Physical Characteristics
RedNet D16R MkII dimensions are illustrated in the diagram above.
RedNet D16R MkII requires 1U of vertical rack space. Allow an additional 75mm of rack depth behind
the unit to allow for cables. Each unit weighs 3.84 kg and for installations in a fixed environment (eg.,
a studio rack), the front-panel rack mountings* will provide adequate support. However, if the unit
is to be used in a mobile situation (eg., flight-cased for touring, etc.), it is recommended that side
support rails or shelves are used within the rack.
*Always use M6 bolts and cage nuts specically designed for 19” equipment racks. An Internet search using the
phrase “M6 cage nuts“ will reveal suitable components.
RedNet D16R MkII generates little significant heat and is cooled by natural convection.
Note. The maximum operating environmental temperature is 50°C / 122°F.
Ventilation is via slots in the enclosure at both sides – ensure that when mounted in a rack the vents
are not obstructed. Do not mount RedNet D16R MkII immediately above any other equipment which
generates significant heat, for example, a power amplifier.
Power Requirements
RedNet D16R MkII is mains-powered. It incorporates ‘Universal’ power supplies, which can operate
on any AC mains voltage from 100 V to 240 V. The AC connections are made via a standard 3-pin IEC
connectors on the rear panel.
When PSU A & PSU B are both connected, PSU A becomes the default supply and therefore draws
more current than B. If a backup mains supply is provided from an uninterruptable source, it is
recommended that this is connected to inlet B.
Two mating IEC cables are supplied with the unit – these should be terminated with mains plugs of
the correct type for your country.
The AC power consumption of the RedNet D16R MkII is 30 W.
Please note that there are no fuses in RedNet D16R MkII, or other user-replaceable components of
any type. Please refer all servicing issues to the Customer Support Team (see “Customer Support
and Unit Servicing” on page 18).
465 mm / 18.3”
31.8 mm / 1.25”
263 mm / 10.35”

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REDNET D16R MKII OPERATION
First Use and Firmware Updates
Your RedNet D16R MkII may require a firmware update* when it is first installed and switched on.
Firmware updates are initiated and handled automatically by the RedNet Control application.
*It is important that the rmware update procedure is not interrupted – either by switching off power to the
RedNet D16R MkII unit or the computer on which RedNet Control is running, or by disconnecting either from
the network.
From time to time Focusrite will release RedNet firmware updates within new versions of RedNet
Control. We recommend keeping all RedNet units up to date with the latest firmware version supplied
with each new version of RedNet Control.
Digital Clocking
Each RedNet D16R MkII will automatically lock to a valid Network Master via its Dante connection.
Alternatively, If a Network Master is not present, then the unit can be chosen as the Network Master
by the user.
Pull Up and Pull Down Operation
RedNet D16R MkII is able to operate at a specified pull up or pull down percentage as selected in the
Dante Controller application.
Level Controls
All I/O channels can be individually attenuated by up to 78 dB in 1 dB steps via the RedNet Control
graphical interface. Each channel can also be muted or dimmed; the Dim function attenuates a
channel by 20 dB.
Sample Rate Converters
SRC will need to be switched in for any sources that are not using the current system clock as a
reference signal.
SRC can be switched in or out separately for each input channel pair.
Note that engaging the sample rate converters will increase the overall latency of the device.

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OTHER REDNET SYSTEM COMPONENTS
The RedNet hardware range includes various types of I/O interface and the PCIe/ PCIeR digital audio
interface cards which are installed in the system’s host computer or in a chassis. All the I/O units
can be considered as “Break-Out” (and/or “Break-In”) boxes to/from the network, and all are built
in mains-powered, 19” rackmount housings, unless otherwise stated. There are also three software
items, RedNet Control 2 (see below), Dante Controller and Dante Virtual Soundcard.
REDNET CONTROL 2
RedNet Control 2 is Focusrite’s customisable software application for controlling and configuring
RedNet and Red range interfaces. The system presents an image for each hardware unit, showing
its control levels and function settings, signal meters, as well as critical status indicators for power
supplies, clock status and the primary/secondary network connections.
The operator’s manual for the RedNet Control 2 application can be found here: www.focusrite.com/downloads
Please refer to the section ‘Device Control’ for further details of device operation and setup using the software.
The single-tab image for the RedNet D16R MkII unit is shown below:
The illustration above shows the Gain control sliders, Level meters and the Mute/Dim buttons for
each of the 16 inputs and outputs – the SRCs are not switched in.
Status icons for the PSUs and the network are shown at the left. See next page for icon descriptions.