D&B D80 User manual

DD80
Manual 1.8 en

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General information
D80 Manual
Version: 1.8 en, 03/2015, D2020.EN .01
Copyright © 2015 by d&b audiotechnik GmbH; all rights
reserved.
Keep this manual with the product or in a safe place
so that it is available for future reference.
We recommend you to regularly check the d&b website for the
latest version of this manual.
When reselling this product, hand over this manual to the new
customer.
If you supply d&b products, please draw the attention of your
customers to this manual. Enclose the relevant manuals with the
systems. If you require additional manuals for this purpose, you
can order them from d&b.
d&b audiotechnik GmbH
Eugen-Adolff-Strasse 134, D-71522 Backnang, Germany
T [phone], F [phone]
[email protected], www.dbaudio.com

Explanation of graphical symbols
The lightning symbol within a triangle is intended to alert
the user to the presence of uninsulated "dangerous
voltages" within the unit’s chassis that may be of
sufficient magnitude to constitute a risk of electric shock
to humans.
The exclamation point within a triangle is intended to
alert the user to the presence of important operating and
service instructions in the literature accompanying the
product.
Before using this product, carefully read the
applicable items of the following safety instructions.
1. Keep these instructions for future reference.
2. Read these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Keep water or other liquids away from the unit. Do not place
liquid filled containers, for example beverages, on top of the
unit.
6. Do not operate the unit while it is wet or standing in liquid.
7. Always operate the unit with the chassis ground wire
connected to the electrical safety earth. Do not defeat the
safety purpose of a grounding-type plug. A grounding-type
plug has two blades and a third grounding prong. The third
prong is provided for your safety. If the provided plug does
not fit into your outlet, consult an electrician for replacement of
the obsolete outlet.
8. Do not use this unit if the power cord is damaged or frayed.
Protect the power cord from being walked upon or pinched,
particularly at the plugs and the point where it exits from the
apparatus.
9. The unit is intended for use in a 19" rack. Follow the mounting
instructions. When a rack on wheels is used, exercise caution
when moving the loaded rack to avoid injury from tipping
over.
10. Unplug this apparatus during lightning storms or when unused
for long periods of time.
11. Never connect an output pin to any other amplifier input or
output pin or to the earth (ground). This may damage the unit
or lead to electric shock.
12. Lay all cables connected to the unit carefully so that they
cannot be crushed by vehicles or other equipment and that no
one can either step on them or trip over them.
13. Refer all servicing to qualified service personnel. Servicing is
required when the apparatus has been damaged in any way
such as:
– Power-supply cord or plug is damaged.
– Liquid has been spilled into the unit.
– An object has fallen into the unit.
– The unit has been exposed to rain or moisture.
– The unit does not operate normally.
– The unit was dropped or the chassis is damaged.
– Do not remove top or bottom covers. Removal of the covers
will expose hazardous voltages. There are no user
serviceable parts inside and removal may void the warranty.
14. Use the mains plug as the disconnecting device and keep it
readily accessible. If the mains plug is not readily accessible
due to mounting in a 19" rack, then the mains plug for the
entire rack must be readily accessible.
15. An experienced user must always supervise the equipment,
especially if inexperienced adults or minors are using the
equipment.
IMPORTANT SAFETY INSTRUCTIONS
d&b D80 Manual 1.8 en 3

1. Introduction....................................................................... 6
1.1. Intended use................................................................ 6
1.2. D80 Concept............................................................... 6
2. Technical specifications................................................. 8
3. Scope of supply............................................................. 10
4. Startup.............................................................................. 11
4.1. Overview................................................................... 11
4.2. Rack mounting and cooling...................................... 12
4.3. Connections............................................................... 14
4.3.1. Mains connection.................................................. 14
4.3.2. Audio INPUT and LINK connectors..................... 16
4.3.3. Output connectors................................................. 17
4.3.4. ETHERNET (Dual Ethernet port)............................ 18
4.3.5. CAN (CAN-Bus).................................................... 19
4.4. Controls and indicators............................................ 20
4.4.1. Mains power switch.............................................. 20
4.4.2. Display - User interface......................................... 20
4.4.3. Standby mode....................................................... 21
4.4.4. Mute functions....................................................... 22
5. User interface................................................................. 23
5.1. Operating concept................................................... 23
5.2. Screen layout and conventions................................ 24
5.3. Screen items and views............................................ 24
5.3.1. Function buttons..................................................... 24
5.3.2. Navigation buttons................................................ 24
5.3.3. Input fields.............................................................. 25
5.3.4. Input masks............................................................ 25
5.3.5. Information fields................................................... 25
6. Home screen................................................................... 26
6.1. Header area - Device............................................... 27
6.2. Data area - Channel strip(s)..................................... 27
7. Channel strip.................................................................. 28
8. Basic settings - Quick reference.............................. 30
9. Device setup................................................................... 32
9.1. Device name............................................................. 33
9.2. Input........................................................................... 34
9.2.1. Input mode............................................................. 34
9.3. Output........................................................................ 36
9.3.1. Output mode.......................................................... 37
9.4. Remote....................................................................... 41
9.4.1. Remote ID............................................................... 41
9.4.2. Ethernet settings..................................................... 41
9.5. More.......................................................................... 42
9.5.1. Preferences............................................................. 42
9.5.1.1. Display................................................................ 43
9.5.1.2. Lock..................................................................... 43
9.5.1.3. Preferences/More.............................................. 45
Contents
d&b D80 Manual 1.8 en4

9.5.1.3.1. System reset.................................................... 46
9.5.2. Info......................................................................... 46
9.5.3. Levels...................................................................... 47
9.5.4. Mains current limiter (MCL).................................. 48
9.5.5. Scope..................................................................... 49
10. Channel setup................................................................ 50
10.1. Channel name........................................................ 51
10.2. Configuration switches - Filter_1, _2, _3.............. 52
10.3. Level......................................................................... 52
10.4. EQ - Equalizer ........................................................ 52
10.5. DLY - Delay............................................................. 55
10.6. Input routing............................................................ 55
10.7. System check.......................................................... 56
10.8. Speaker................................................................... 57
10.8.1. LINEAR setup....................................................... 59
10.8.2. LoadMatch.......................................................... 60
10.9. Frequency generator - Freq. gen........................... 61
11. Web Remote interface................................................ 62
12. Operation (Hardware references)........................ 65
12.1. Power supply.......................................................... 65
12.1.1. Active Power Factor Correction (PFC)............... 65
12.1.2. Automatic mains range selection....................... 65
12.1.3. Mains voltage monitoring................................... 65
12.1.4. Mains inrush current limiter................................. 66
12.1.5. Mains supply requirements................................ 66
12.1.6. Generator operation/UPS requirements........... 67
12.2. Power amplifiers..................................................... 67
12.3. Cooling fans............................................................ 68
12.4. Current/power draw and thermal dissipation...... 68
13. Service/Maintenance and care.............................. 70
13.1. Service..................................................................... 70
13.2. Maintenance and care.......................................... 70
13.2.1. Touch screen cleaning........................................ 70
13.2.2. Touch screen calibration..................................... 71
14. Manufacturer's Declarations................................... 72
14.1. EU declaration of conformity (CE symbol)........... 72
14.2. WEEE Declaration (Disposal)................................ 72
14.3. Licenses and Copyright.......................................... 72
15. Appendix......................................................................... 73
15.1. System check - References..................................... 73
15.2. Error messages....................................................... 75
d&b D80 Manual 1.8 en 5

1.1. Intended use
The d&b D80 amplifier is designed for mobile applications and
intended to be used with all current d&b loudspeakers. A LINEAR
setup is available allowing the D80 to be used as a linear power
amplifier.
NOTICE!
The device complies with the electromagnetic compatibility
requirements of EN 55103 (product family standard for audio,
video, audio-visual and entertainment lighting control apparatus for
professional use) for the environments E1 (residential), E2 (business
and commercial), E3 (outdoor use in urban areas) and E4
(outdoor use in rural areas).
Acoustic interference and malfunctions may occur if the unit is
operated in the immediate vicinity of high-frequency transmitters
(e.g. wireless microphones, mobile phones, etc.). Damage to the
device is unlikely, but cannot be excluded.
1.2. D80 Concept
The D80 amplifier represents the next generation of high power
four channel Class D amplifiers. It is developed and manufactured
by d&b using Digital Signal Processing (DSP) to incorporate
loudspeaker specific configurations and user definable setups,
equalization and delay functions. The amplifier is designed to fully
drive all d&b loudspeakers and provide comprehensive
management and protection capabilities. This high performance
amplifier provides the power density required for both touring and
installation purposes while the powerful signal processing extends
the level of functionality of the on-board features.
The user interface of the amplifier consists of two elements: a color
TFT touch screen providing visual information and quick access to
the amplifier settings and a rotary encoder on the front panel for
data input purposes. To allow ease of operation when the amplifier
is below eye level, the front panel and the integrated display are
tilted upwards. As a result, the front panels of multiple amplifiers on
top of each other within a rack integrate to form one large control
surface.
The user definable equalizer features two independent 16-band
EQ groups within each channel. These provide parametric, notch,
shelving and asymmetric filters as well as a graphic EQ (via the
d&b R1 Remote control software V2) allowing instant switching
between two EQ curves for comparison. The delay capability
covers a range of up to 10 s. All loudspeaker specific functions
such as CUT, HFA, HFC, CSA or CPL are available. The DSP unit of
the amplifier has a fixed latency of 0.3 ms.
D80 Front view
D80 User interface
1. Introduction
d&b D80 Manual 1.8 en6

The amplifier enables up to four input channels, which may be four
analog inputs, two analog and two AES channels or four AES
channels. Each input channel can be routed to any of the output
channels A to D. XLR connectors 2 and 4 of the D80 can be used
as either digital or analog inputs, connectors 1 and 3 are analog
inputs. Link outputs are supplied for all inputs. This 1:1 ratio of
inputs to amplifier output channels increases flexibility of
application, particularly for use as monitor, frontfill or effect
channels.
The D80 amplifier outputs are optionally NL4 or EP5 connectors
plus one centered NL8 connector with all pins driven. The latter
serves as an interface to a rack panel or to loudspeaker multicores
and breakout adapters. To simplify configuration, the output mode
of the amplifier can be configured like a set of two dual channel
amplifiers providing Dual Channel, Mix TOP/SUB or 2-Way Active
modes for the left and the right channels A/B and C/D,
respectively.
For applicable loudspeakers, d&b LoadMatch enables the D80
amplifier to electrically compensate for the properties of the cable
used to connect the loudspeakers to the amplifier output. This
function which covers a bandwidth of up to 20 kHz preserves the
tonal balance when cable lengths of up to 70 m (230 ft) are used.
Due to its design LoadMatch does not require additional wires and
is therefore applicable with any connector type used.
To provide optimum compensation, cable length and cross-
sectional data as well as the number of loudspeakers connected to
the amplifier channel can be entered on the amplifier.
The D80 utilizes a switch mode power supply with active Power
Factor Correction (PFC) to produce a clean current draw and
ensure stable and efficient performance under adverse mains
conditions. The high power capabilities provide increased power
to fully drive all current d&b loudspeaker cabinets and sufficient
headroom for any future systems.
Remote control and full system integration are realized using the
d&b ArrayCalc simulation software and R1 Remote control
software V2. The D80 amplifier includes two Ethernet ports on
etherCON connectors to enable daisy chaining. Both Ethernet and
dbCAN protocols are incorporated. The Ethernet protocol
implemented in the d&b R1 Remote control software V2 and the
D80 amplifier is a protocol developed by the OCA Alliance (Open
Control Architecture Alliance), of which d&b is a founding member.
For further details, please refer to the OCA website:
www.oca-alliance.com.
D80 Rear view
d&b D80 Manual 1.8 en 7

Audio data (linear setting with subsonic filter)
Maximum output power per channel (THD + N < 0.5%, all channels
driven)
CF = 6 dB @ 4/8 ohms 4 x 2600/2000 W
CF = 12 dB @ 4/8 ohms 4 x 4000/2000 W
Maximum output voltage 180 V
Frequency response (—1 dB) 35 Hz – 20 kHz
THD+N 20 Hz – 20 kHz, 600 W @ 4 ohms) < 0.5%
S/N ratio (unweighted, RMS)
Analog input > 110 dBr
Digital input > 114 dBr
Damping factor (20 Hz – 200 Hz into 4 ohms) > 100
Crosstalk (20 Hz – 20 kHz) < –70 dBr
Gain (Linear mode @ 0 dB) 31 dB
Protection circuits
Mains inrush current limiter 13 A RMS @ 230 V AC
22 A RMS @ 120 V AC
27 A RMS @ 100 V AC
Ground fault protection
Output current limitation/protection 65 A / 75 A
Output DC offset protection 10 V
Output HF Voltage Limiter 60 V @ 10 kHz
Output pop-noise suppression
Mains Current Limitation (MCL) 95 to 50 % of 16 / 30 A
Overvoltage protection Up to 400 V AC
Self-resetting overtemperature protection
Power supply
Autosensing switched mode power supply with active power factor
correction (PFC)
Mains connector powerCON-HC
Rated mains voltage 208 to 240 V, 50 – 60 Hz
high range
100 to 127 V, 50 – 60 Hz
low range
Mains fuse internal
Power consumption (typical values)
Standby 9 W
Idle 180 W
Max. power consumption (short term RMS) 7000 W
Audio input connectors
INPUT analog (A1 - A4) 3 pin XLR female
Pin assignment 1 = GND, 2 = pos., 3 = neg.
Input impedance 38 kOhms, electronically balanced
Common mode rejection (CMRR @ 100 Hz/10 kHz) > 70 / 50 dB
Maximum input level (balanced/unbalanced) +25 / 17 dBu
+27 dBu @ 0 dBFS
LINK analog (A1 - A4) 3 pin XLR male
Pin assignment 1 = GND, 2 = pos., 3 = neg.
parallel to input
INPUT digital (D1/2, D3/4) 3 pin XLR female, AES 3
Pin assignment 1 = GND, 2 = AES Signal, 3 = AES Signal
Input impedance 110 ohms, transformer balanced
Sampling 48 / 96 kHz / 2 Ch/n
Synchronization Word-Sync: PLL-locked to source (slave mode)
LINK digital (Output) 3 pin XLR male
electronically balanced
analog signal buffering (refresh), power fail relay (Bypass)
Output connectors
SPEAKER OUTPUTS A/B/C/D 4 x NL4
optional: 4 x EP5
4 CHANNEL OUTPUT 1 x NL8
Network connectors
CAN 2 x RJ 45 parallel
ETHERNET 2 x etherCON®
Dual Ethernet port with built-in 2-port Ethernet switch
10/100 Mbit
Controls and indicators
POWER Mains power switch
SCROLL/EDIT Digital rotary encoder
Display TFT color touch screen, 3.5" / 320 x 240 Pixel
2. Technical specifications
d&b D80 Manual 1.8 en8

Digital Signal Processing
System start-up time 17 sec.
Sampling rate 96 kHz / 27 Bit ADC / 24 Bit DAC
Latency analog input 0.3 msec.
Latency digital input (AES) 0.3 msec.
48 kHz / 96 kHz
Input dynamic > 127 dB
ADC dynamic > 110 dB
DAC dynamic > 110 dB
Equalizer two user definable 16-band equalizers
Filter types: PEQ/Notch/HiShlv/LoShlv/Asym
Delay 0.3 msec. - 10 sec.
Frequency generator Pink noise or Sine wave 10 Hz – 20 kHz
Operating conditions
Temperature range* –10 °C ... +40 °C / +14 °F ... +104 °F
*continuous operation
Temperature range** –10 °C ... +50 °C / +14 °F ... +122 °F
**reduced output power or short term operation
Storage temperature –20 °C ... +70 °C / –4 °F ... +158 °F
Humidity (rel.), long term average 70%
Fan noise emission
Rack mounted, measured on axis, 1 m to front panel, A-weighting
Idle 34 dB(A)
Ambient temperature 22 °C / 71.6 °F
Max. RPM 49 dB(A)
Dimensions and weight
Height x width x depth 2 RU x 19" x 530.5 mm
2 RU x 19" x 20.9"
Weight 19 kg / 42 lb
D80 enclosure dimensions in mm [inch]
d&b D80 Manual 1.8 en 9

Before starting up the device, please verify the shipment for
completeness and proper condition of the items.
If there is any sign of obvious damage to the unit and/or the
power cord, do not operate the unit and contact your local dealer
from whom you received it.
Pos. Qty. d&b Code Description
[1] 1 Z2710 d&b D80 Amplifier, dependent on chosen output option (NL4 or EP5 output
connectors).
Including:
[2] 1 Z2620.xxx Power cord D80 (specific to country).
[3] 1 K6007.050 RJ 45 Patch cable, 0.5 m (1.6 ft) CAT 6/AWG 24-STP (shielded twisted pair) to be
used for daisy chaining multiple amplifiers within a rack.
[4] 1 Z6116 RJ 45 M Terminator for terminating the last device of a CAN-Bus segment.
[5] 1 D2020.EN .01 D80 Manual.
3. Scope of supply
d&b D80 Manual 1.8 en10

4.1. Overview
Connections
d&b audiotechnik GmbH
[1] Mains connector socket.
Refer to Þ Chapter 4.3.1. "Mains
connection" on page 14 and
Þ Chapter 12.1.5. "Mains supply
requirements" on page 66.
[3] Output connector panel, dependent
on chosen output option (NL4 or EP5
output connectors).
Refer to Þ Chapter 4.3.3. "Output
connectors" on page 17.
[2] Audio INPUT (analog/digital) and
LINK connectors.
Refer to Þ Chapter 4.3.2. "Audio
INPUT and LINK connectors"
on page 16.
[4] ETHERNET.
Refer to Þ Chapter 4.3.4.
"ETHERNET (Dual Ethernet port)"
on page 18.
[5] CAN (CAN-Bus).
Refer to Þ Chapter 4.3.5. "CAN
(CAN-Bus)" on page 19.
Controls and indicators - User interface
[7] 3.5" TFT color touch screen.
[8] Rotary encoder SCROLL/EDIT.
Refer to Þ Chapter 4.4. "Controls
and indicators" on page 20 and
Þ Chapter 5. "User interface"
on page 23.
[6] Mains power switch.
Refer to Þ Chapter 4.4. "Controls
and indicators" on page 20,
following Þ Chapter 4.4.1. "Mains
power switch" on page 20.
4. Startup
d&b D80 Manual 1.8 en 11

4.2. Rack mounting and cooling
Rack mounting
The D80 amplifier enclosure is designed to fit standard 19"
equipment racks or cabinets.
When specifying a rack, be sure to allow extra depth (150 mm /
6" is usually sufficient) to accommodate the cables and connectors
at the rear of the amplifier.
When mounting D80 amplifiers into a 19" rack, do not just rely on
fixing and supporting the amplifiers by their front panels using
appropriate rack mounting screws and U washers as shown in the
graphic opposite. Provide additional support ...
– by fixing the rear-mounted rack ears using appropriate rack
mounting screws and U washers as shown in the graphic
opposite. This is particularly important when amplifiers are
racked up for touring purposes.
– or using shelves fixed to the inner sides of the cabinet or rack.
Cooling
Thermal conditions are a vital factor to ensure operational safety of
the power amplifiers. The D80 amplifier is equipped with three
internal fans that draw cool air from the front into the housing and
channel the warm air towards the back of the device.
– Please ensure that adequate cool airflow is provided.
– Do not block or cover the front panel air intake or the vents on
the rear panel.
– If amplifiers are installed in sealed cabinets (e.g. in fixed
installations), use additional fan modules with filters that can
be easily replaced without opening the sealed cabinets.
– Do not combine D80 amplifiers with D6 or D12 amplifiers in
one rack.
– Do not rack up D80 amplifiers together with other devices
producing additional heat with opposing airflows.
Base heat
Unlike other amplifiers, the D80 produces a base heat of approx:
40 °C (104 °F) in the rear part of the device when idling (On,
idling). During operation, this temperature will only increase
insignificantly. Please also refer to Þ Chapter 12.4. "Current/
power draw and thermal dissipation" on page 68.
d&b D80 Manual 1.8 en12

Touring rack assemblies
When using touring rack assemblies such as the d&b Z5330 D80
Touring rack assembly or any other touring rack containing D80
amplifiers, make sure to provide sufficient space of 0.5 m (1.6 ft)
at the front and rear of the touring rack to ensure adequate cooling
airflow.
D80 Touring rack assemblies can be positioned side by side or
stacked.
When combining the Z5330 D80 Touring rack assembly with the
Z5310 D12 Touring rack assembly or any other rack assembly
that produces an opposing airflow, observe the following
restrictions:
– D12/D80 Touring rack assemblies can be positioned side by
side.
– Do not stack D80 and D12 Touring racks or any other rack
assemblies with opposing airflow.
d&b D80 Manual 1.8 en 13

4.3. Connections
4.3.1. Mains connection
WARNING!
Potential risk of electric shock.
The device is a protective class 1 unit. A missing earth (ground)
contact may cause dangerous voltages in the housing and controls
and may lead to electric shock.
– Connect the unit to mains power supplies with protective earth
only.
– If there is any sign of obvious damage to the power cord
and/or mains connector, do not use the power cord and
replace it before further use.
– Please ensure the mains connector is accessible at any time to
disconnect the unit in case of malfunction or danger.
If the mains plug is not readily accessible due to mounting in a
19" rack, then the mains plug for the entire rack must be
readily accessible.
– Do not connect or disconnect the powerCON® mains
connector under load or live.
d&b D80 Manual 1.8 en14

NOTICE!
Due to the high power capability of the device, only operate one
device per phase conductor.
Please also refer to Þ Chapter 12.1. "Power supply"
on page 65, following Þ Chapter 12.1.5. "Mains supply
requirements" on page 66.
Mains voltage Frequency Current
100/120 V 50/60 Hz 30 A
230/240 V 50/60 Hz 15 - 16 A
Before connecting the device to mains voltage, check that the
mains voltage and frequency correspond to the specifications on
the rating label next to the mains connector socket on the rear
panel of the unit.
A powerCON-HC® mains connector socket [1] is fitted on the rear
panel and an appropriate power cord [2] is supplied.
d&b D80 Manual 1.8 en 15

4.3.2. Audio INPUT and LINK connectors
All signal input and link output connectors 1-4 are located on the
rear panel.
These can be configured as four analog inputs, two analog and
two AES channels or four AES channels (Please refer to
Þ Chapter 9.2. "Input" on page 34).
Each input channel can be routed to any of the output channels A
to D (Please refer to Þ Chapter 10.6. "Input routing"
on page 55).
Analog INPUT and LINK (A1 - A4)
A 3-pin female XLR input connector is provided for each channel.
Wired in parallel is a 3-pin male XLR input link connector used to
feed the input signal on to the next device in the signal chain.
Specifications
Pin assignment 1 = GND, 2 = pos., 3 = neg.
Input impedance 38 kOhms, electronically balanced
Common mode rejection (CMRR@100 Hz/10 kHz) > 70/50 dB
Maximum input level (balanced/unbalanced) +25/17 dBu
+27 dBu @ 0 dBFS
LINK analog (A1 - A4) 3 pin XLR male
parallel to input
Digital INPUT and LINK (D1/2 - D3/4)
The input connectors 2 (D1/2) and 4 (D3/4) can be configured
as AES/EBU (AES 3) inputs individually.
Note: When configuring the digital inputs, the remaining
input and link output connectors 1 (A1) and/or 3 (A3) are
disabled.
The corresponding digital LINK output (2/4) can be used to feed a
refreshed input signal to the next device in the signal chain. The
signal shape (the rising and falling edges of the signal) and level
are refreshed with an analog buffer amplifier.
A power fail relay is incorporated to prevent interruption of the
signal chain should there be a power failure. In this situation, the
digital input signal bypasses the analog buffer amplifier and is
routed directly to the LINK output.
Specifications
Pin assignment 1 = GND, 2 = AES Signal, 3 = AES Signal
Input impedance 110 ohms, transformer balanced
Sampling 48 / 96 kHz / 2 Ch/n
Synchronization Word-Sync: PLL-locked to source (slave mode)
LINK digital (Output) 3-pin XLR male
electronically balanced
analog signal buffering (refresh)
Power Fail Relay (Bypass)
d&b D80 Manual 1.8 en16

4.3.3. Output connectors
WARNING!
Potential risk of electric shock.
The amplifier output pins can carry dangerous voltages.
– Only use isolated loudspeaker cables with correctly fitted
connectors.
– Never connect an amplifier output pin to any other input or
output connector pin or protective earth (ground).
SPEAKER OUTPUTS
Depending on the chosen output option, the amplifier is supplied
with four NL4 or EP5 output connectors, one for each amplifier
output channel.
Depending on the output mode selected, the appropriate pin
assignment of the relevant output connectors is set automatically.
Note: A detailed description of the applicable output modes
and how to configure the appropriate output mode is given in
Þ Chapter 9.3.1. "Output mode" on page 37.
For further information regarding the applicable output modes
for each loudspeaker system, please refer to the relevant
loudspeaker manual.
4 CHANNEL OUTPUT
NOTICE!
The 4 CHANNEL OUTPUT connector is only intended as an
interface to a rack panel or to loudspeaker multicores and
breakout adapters.
Do not connect any loudspeaker cabinets, neither passive nor
active systems, to this connector, otherwise there is a risk of
damaging the loudspeaker components or the amplifier.
The centered NL8 connector carries the output signals of all four
amplifier channels with the following pin assignment:
1+/— = Channel A pos. / neg. 2+/— = Channel B pos. / neg.
3+/— = Channel C pos. / neg. 4+/— = Channel D pos. / neg.
d&b D80 Manual 1.8 en 17

4.3.4. ETHERNET (Dual Ethernet port)
A Dual Ethernet port with a built-in 2-port Ethernet switch
(10/100 Mbit/peer-to-peer) is provided enabling remote control
via Ethernet and allows the following physical network topologies:
– Star topology
Recommended standard,
– Daisy chain topology
For a maximum of three devices,
– or a combination of both topologies.
Note: In a daisy chain topology, if one device fails or is
switched off, this also affects all subsequent devices which are
then no longer connected to the network either.
A detailed description of remote control via Ethernet is given in
the technical information TI 310 (d&b code D5310.EN) which
can be downloaded from the d&b website at
www.dbaudio.com.
LED indicators
The two LED indicators above the respective connector in use
indicate the following states:
Green Illuminates permanently when the device is connected
to an active network and flashes as long as a data
stream is transmitted.
Yellow – Is off when the speed is 10 Mbit.
– Illuminates permanently when the speed is
100 Mbit.
Network topologies
Star topology Daisy chain topology for a
maximum of three devices Combined topology
d&b D80 Manual 1.8 en18

4.3.5. CAN (CAN-Bus)
The device is equipped with a 2-wire serial remote control interface
carrying the CAN-Bus signals to enable remote control with the
d&b R60 USB to CAN or R70 Ethernet to CAN interfaces.
Note: A detailed description of remote control via the d&b
Remote network (CAN-Bus) is given in the technical
information TI 312 (d&b code D5312.EN) which can be
downloaded from the d&b website at www.dbaudio.com.
All pins of both connectors are wired in parallel allowing either to
be used as input or output (daisy chaining) or for terminating the
CAN-Bus network.
Pin assignment
The pin assignments of both, the RJ 45 sockets and the cable
connectors, are shown in the graphic opposite.
Note: The connections for the CAN-Bus are referenced to
common ground. The "CAN Ground" is routed via the
cable shielding and is hardwired to PE.
Within the CAN-Bus network, shielded cables and shielded
RJ 45 connectors (metal housing) must be used while the
cable shielding must be connected to both sides.
CAN network topologies
Daisy chain topology
With R60 USB to CAN interface
Combined topology
With R70 Ethernet to CAN interface
CAN
d&b D80 Manual 1.8 en 19

4.4. Controls and indicators
4.4.1. Mains power switch
The on/off rotary switch [6] is located on the bottom right of the
front panel.
OFF Mains isolation is not provided. The internal power
supplies are off but stay connected to the mains.
ON The unit is switched on and ready for operation.
4.4.2. Display - User interface
Operation, configuration and status viewing are all performed via
the Display Þ User interface.
The user interface consists of a 3.5" TFT color touch screen [7] with
a resolution of 320 x 240 pixels and an additional digital rotary
encoder [8].
The resistive touch screen responds to pressure and therefore can
be operated by a fingertip, even when wearing gloves, or by an
appropriate stylus tip (pen).
NOTICE!
The touch panel utilizes a thin flexible sheet that may be damaged
by sharp objects or heavy treatment.
Due to the wide range of functions the user interface is described
separately in more detail in Þ Chapter 5. "User interface"
on page 23.
However, both the Standby and Mute functions of the D80 are
described in the following two sections.
d&b D80 Manual 1.8 en20