AUDAC DSP40 User manual

DSP40
User Manual
www.audac.eu

2
ADDITIONAL INFORMATION
This manual is put together with much care, and is as complete as could be on the
publication date. However, updates on the specifications, functionality or software may
have occurred since publication. To obtain the latest version of both manual and software,
please visit the Audac website @ www.audac.eu.
POWER SUPPLY AND POWER CORD REQUIREMENTS
Power supply class I grounding requirements:
For protection from fault currents, the equipment shall be connected to a grounding terminal. Plug the system
power cord into an AC outlet that provides a ground connection. Substitute cords may not provide adequate fault
protection. Only use the power cord supplied with this product or an authorized/equivalent replacement
Safety notices:
Denmark:
Apparatets stikprop skal tilsluttes en stikkontakt med jord, som giver forbindelse til stikproppens jord.
Finland:
Laite on liitettävä suojakoskettimilla varustettuun pistorasiaan.
Norway:
Apparatet må tilkoples jordet stikkontakt.
Sweden:
Apparaten skall anslutas till jordat uttag.
ATTENTION
The fuse (T500mAL/250V) provides a safeguard function to the device. When replacing the fuse, make sure
that the value of the replacement matches the value of the original fuse. Identification of a suitable replacement
component or substitute shall be done by qualified technicians.

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Index
Introduction 5
Precautions 6
Safety requirements 6
Caution servicing 6
EC Declaration of Conformity 6
Waste of Electrical and Electronic Equipment (WEEE) 7
Caution 7
Chapter 1: Pin connections and connectors 9
Connection standards 9
Chapter 2: Front & rear panel 10
Front panel overview 10
Front panel description 10
Rear panel overview 11
Rear panel description 11
Chapter 3: Using the DSP40 12
Main screen 13
DSP40 settings 14
General settings 15
Chapter 4: Additional information 16
Technical specifications 16

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5
Introduction
Professional DAB/DAB+ & FM tuner
The DSP40 is a professional DAB/DAB+ & FM tuner which provides access to a wide variation of radio
stations while guaranteeing a high-quality audio reproduction. Station selection can be done manually
or automatically, while up to 10 preferred channels can be internally stored and recalled.
The front panel of the system accommodates a 2.8” TFT display in combination with a push rotary
function dial and 4 tactile push buttons. The controls and indicators on the front panel of the unit are
guaranteeing an intuitive and user friendly operation, allowing hassle free operation and configuration to
even unexperienced users. Information such as radio station information carried by RDS / Radio text and
signal reception strength are indicated.
The signal output level is user configurable while dynamic range compression (DRC) is supported, improving
the intelligibility for low volumes in applications with high levels of background noise.
Other functions such as mono/stereo (FM) switching always guarantee the best possible audio reception.
The antenna input is implemented by an F-type connector allowing connection of the included antenna
cable or any other external antenna using 75Ωcoaxial cabling. The balanced stereo line output is connected
through two 3-pin terminal block connections.
The RS-232 communication port allows system integration with any home or industrial automation system,
while an optional 2.4 GHz remote control allows handheld control while hidden out of sight.

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Precautions
READ FOLLOWING INSTRUCTIONS FOR YOUR OWN SAFETY
ALWAYS KEEP THESE INSTRUCTIONS. NEVER THROW THEM AWAY
ALWAYS HANDLE THIS UNIT WITH CARE
HEED ALL WARNINGS
FOLLOW ALL INSTRUCTIONS
NEVER EXPOSE THIS EQUIPMENT TO RAIN, MOISTURE, ANY DRIPPING OR SPLASHING LIQUID. AND
NEVER PLACE AN OBJECT FILLED WITH LIQUID ON TOP OF THIS DEVICE.
DO NOT PLACE THIS UNIT IN AN ENCLOSED ENVIRONMENT SUCH AS A BOOKSHELF OR CLOSET.
ENSURE THERE IS ADEQUATE VENTILATION TO COOL THE UNIT. DO NOT BLOCK THE VENTILATION
OPENINGS.
DO NOT STICK ANY OBJECTS THROUGH THE VENTILATION OPENINGS.
DO NOT INSTALL THIS UNIT NEAR ANY HEAT SOURCES SUCH AS RADIATORS OR OTHER
APPARATUS THAT PRODUCE HEAT
DO NOT PLACE THIS UNIT IN ENVIRONMENTS WHICH CONTAIN HIGH LEVELS OF DUST, HEAT,
MOISTURE OR VIBRATION
THIS UNIT IS DEVELOPED FOR INDOOR USE ONLY. DO NOT USE IT OUTDOORS
PLACE THE UNIT ON A STABLE BASE OR MOUNT IT IN A STABLE RACK
ONLY USE ATTACHMENTS & ACCESSORIES SPECIFIED BY THE MANUFACTURER
UNPLUG THIS APPARATUS DURING LIGHTNING STORMS OR WHEN UNUSED FOR LONG PERIODS
OF TIME
ONLY CONNECT THIS UNIT TO A MAINS SOCKET OUTLET WITH PROTECTIVE EARTHING
CONNECTION
THE MAINS PLUG OR APPLIANCE COUPLER IS USED AS THE DISCONNECT DEVICE, SO THE
DISCONNECT DEVICE SHALL BE READILY OPERABLE
USE THE APPARATUS ONLY IN MODERATE CLIMATES
EC DECLARATION OF CONFORMITY
This product conforms to all the essential requirements and further
relevant specifications described in following directives: 2014/30/EU
(EMC) and 2014/35/EU (LVD)
CAUTION - SERVICING
This product contains no user serviceable parts. Refer all servicing to
qualified service personnel. Do not perform any servicing (unless you
are qualified to)

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CAUTION
The symbols shown are internationally recognized symbols that warn about potential hazards of
electrical products. The lightning flash with arrow point in an equilateral triangle means that the
unit contains dangerous voltages. The exclamation point in an equilateral triangle indicates that it is
necessary for the user to refer to the users manual.
These symbols warn that there are no user serviceable parts inside the unit. Do not open the unit. Do
not attempt to service the unit yourself. Refer all servicing to qualified personnel. Opening the chassis
for any reason will void the manufacturer’s warranty. Do not get the unit wet. If liquid is spilled on the
unit, shut it off immediately and take it to a dealer for service. Disconnect the unit during storms to
prevent damage.
WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE)
The WEEE marking indicates that this product should not be disposed with regular
household waste at the end of its life cycle. This regulation is created to prevent any
possible harm to the environment or human health.
This product is developed and manufactured with high quality materials and components
which can be recycled and/or reused. Please dispose this product at your local collection
point or recycling centre for electrical and electronic waste. This will make sure that
it will be recycled on an environmentally friendly manner, and will help to protect the
environment in which we all live.

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Chapter 1
Pin connections and connectors
CONNECTION STANDARDS
The in- and output connections for AUDAC audio equipment are performed corresponding to international
wiring standards for professional audio equipment.
3-Pin Terminal Block:
For balanced in & output connections
Left: Signal - (XLR Pin 3)
Center: Signal + (XLR Pin 2)
Right: Ground (XLR Pin 1)
For balanced line output connections:
For unbalanced line output connections:
RS232 (serial connection interface):
For connection with home automation systems, or other remote control equipment
Connection Standard RS232
PIN 2 DSP40 TX
PIN 3 DSP40 RX
PIN 5 GND
Settings 19200 Baud
8 Bit
1 Stop bit
No parity
No Handshaking
RS232
The complete command set for controlling the DSP40 through RS-232 is available in the DSP40
commands user manual which is freely downloadable on www.audac.eu

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Chapter 2
Front & rear panel
Front Panel overview
Front panel description
Graphical LCD display with tactile push buttons and rotary selection dial:
A clear system overview and intuitive user experience is offered using the 2.8” graphical LCD display
accompanied with four tactile selection buttons (left side) and a rotary selection dial (right side). The
true colour display offers a clear overview of the systems current operation mode with intuitive and user
friendly browsing through the menu structure.
The functionality of the four tactile push buttons on the left side depends on the current mode and position
in the menu structure. Icons on the left side of the display are indicating the current functionality linked
with the buttons.
Parameter adjustment and browsing is made easy using the rotary function dial. This multifunctional
dial allows easy one-hand operation throughout the entire menu structure. Browsing through the menu
is done by rotating it while actions are made by pressing it.
Power switch:
Allows to power the system ON and OFF. The blue indicator LED illuminates when switched on.

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Rear Panel overview
Rear panel description
AC Power inlet with fuse:
The mains power supply (100-240V AC - 50/60 Hz) has to be applied to this AC power inlet. The connection
is made by an IEC C14 power connector and is fitted with a fuse. When replacing the fuse, make sure that
the value of the replacement fuse matches the value of the original fuse. (T0.5AL/250V)
RS232 Connection:
The RS232 connection can be used to control the system through any external hardware such as home
and industrial automation systems. The pinout and communication settings are described in an earlier
chapter of this user manual. The complete RS232 command instruction set and configuration information
can be downloaded from the AUDAC website.
USB (Update) Connection:
The USB (Update) connection can be used for system firmware updates and/or for connection of the RF
remote control (RMT40) receiver.
Balanced stereo line output:
The balanced stereo line output is implemented using two 3-pin terminal block connectors. The audio
output available on this connector allows it to be fed to any amplifier or pre-amplifier.
F-type antenna connection:
The antenna (input) connection is implemented using an F-type connector whereto the supplied FM
antenna should get connected. Depending of the installation conditions, location and signal strength, it can
be recommended / necessary to extend the antenna using 75 Ωcoaxial cable and connect an external
or outdoor antenna.

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Chapter 3
Using the DSP40
The DSP40 control and configuration is done through the front panel of the device which includes a 2.8”
graphical LCD display, which is accompanied with four tactile push buttons (left side) and a rotary selection
dial (right side). This combination allows you to navigate through the systems user interface and access
all the available control and configuration possibilities of the system.
The functionality of the four tactile push buttons on the left side depends on the current mode and position
in the menu structure. Icons on the left side of the display are indicating the current functionality linked
with the buttons.
The rotary selection dial can be used for parameter adjustments and browsing to station lists, playlists or
any other. This multifunctional dial allows easy one-hand operation throughout the entire menu structure.
Browsing is done by rotating it while actions are made by pressing it.
The functionality for each icon is indicated in following table:
ICON DESCRIPTION
Automatic tuning to previous station
Automatic tuning to next station
Switch between FM / DAB functionality
Mark / save current selection as favorite
Go to general settings
Go to DAB/DAB+ & FM tuner settings

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Main screen
FM Radio station selection:
• Automatic tuning:
The currently playing FM radio station (if FM mode is
enabled) is selected by pressing the (tuning down) and
(tuning up) buttons. When pressed, it will automatically
start searching for the next station with sufficient signal
strength. The currently tuned frequency will be indicated at
the center of the screen, also indicating additional carried
RDS information (if available) such as the currently playing
station or track name.
• Manual tuning:
The tuning frequency can be manually adjusted by rotating the function dial until the tuned frequency is
highlighted in blue colour. When highlighted, confirm manual tuning adjustment by single pressing the
rotary dial and adjust the tuner frequency by rotating clockwise (tuning up) or counter-clockwise (tuning
down). Once tuned to the desired frequency, confirm the tuned frequency by single pressing the function
dial once again.
DAB Radio station selection:
The currently playing DAB radio station (if switched to DAB mode) is selected by pressing the (tuning
down) and (tuning up) buttons. When pressed, it will automatically switch to the next available station.
The currently playing station name is shown, together with additional carried Radio text station information
such as the currently playing program or track name. More information such as signal reception strength,
the number of available DAB radio stations and the bitrate of the currently playing station is shown on
the right side of the screen.
FM/DAB switching:
Switching between DAB and FM mode is done by pressing the FM/DAB (FM/DAB) button. The current mode
(FM or DAB) is shown on the display in front of the tuning frequency or station name. When switching to
DAB mode for the first time, all available stations will be scanned first.
Save radio station:
The currently playing station can be stored to one of the 10 available positions. A horizontal array with
numbers from 1 to 10 is indicated on the bottom of main tuner screen, representing the 10 positions
whereto the presets can be saved. Rotate the function dial until the number for radio station storage is
highlighted, and press the (save) icon for saving the currently selected frequency to the selected position.
Recall radio station:
A stored radio station can be recalled by rotating the function dial until the number on the horizontal array
on the bottom of the main tuner screen is highlighted. When highlighted, confirm the recall of the stored
frequency by single pressing the function dial. The stored frequency under this position is now recalled
and the radio station will start playing.
General settings:
The (General settings) button gets you to the general settings menu where all general settings for the
device can be configured.
FM/DAB
DAB/FM tuner

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DSP40 Settings screen
The settings menu for DSP40 can be loaded by rotating the rotary dial until the (settings) symbol is
highlighted in blue colour. When highlighted, confirm to proceed to the settings menu by single pressing
the rotary dial.
Output gain:
The gain can be adjusted within a range of +8 dB and -32 dB,
allowing optimization of the output level according to the input
sensitivity of the connected amplifier or pre-amplifier. For adjusting
the output gain, rotate the function dial until ‘Gain’ is highlighted
and press it for proceeding to the gain settings. The level can be
adjusted by rotating clockwise (tuning up) or counter-clockwise
(tuning down). Press the rotary dial for confirming the currently set
output level.
Mono:
The FM reception is standard set to stereo mode, however it will switch automatically to mono mode if
the signal reception strength is insufficient. This reduces the noise and improves the sound quality when
having poor signal reception.
Manual switching the output to mono mode is possible using this function, allowing the output to be fed
to mono systems, such as 100V public address amplifiers. Toggling between mono and stereo mode can
be done by single pressing the function dial.
DAB DRC:
The DRC (Dynamic Range Compression) increases the loudness of the signal in the quieter parts of the
audio signal and decreases it in the louder parts. This technique allows quite parts of the audio signal still
being audible in situations with high background noise without blasting out. It can be switched between
Off, Low and High. DRC data is carried by an additional side channel of DAB radio station and is only
functional when the selected radio station carries the DRC data.
DAB info:
Gives additional information about the currently playing DAB radio station. Displayed information includes
station name, currently playing program or track name, signal reception strength, bitrate, ...
DAB search:
Clears all stored DAB channels from the memory and scans the entire bandwidth for available DAB/
DAB+ channels. DAB search is automatically performed when initially switched to DAB mode, but shall
be re-done when any change to available channels or position of the receiver is made.
Factory reset:
Factory reset will recall all settings to factory defaults and all previously made settings and configurations
will be lost. After selecting factory reset, a confirmation will be asked whether all settings definitely need
to be reset to factory defaults. When confirmed, all settings will be lost.
DSP40 Settings
Output gain
0dB
Mono
DAB DRC
DAB info
DAB Search

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General settings
The general settings menu for DSP40 is loaded when pressing the (general settings) button. The
general settings menu allows to configure all the global settings for the DSP40 unit, keeping aside the
audio and frequency settings.
Lock:
When selecting ‘Lock’, the system will be locked and will
require a password to be entered before any further action
can be taken (if the password is enabled).
Info:
Info will give an overview of the software versions the
DSP40 is running.
LCD Settings:
Adjustments for the LCD settings can be made here. The
brightness can be adjusted within a range of 10% to 100% (standard is 80%). Adjusting of the LCD
brightness can be convenient when the device is placed in an environment with very low or very high
ambient light. Hereby the clarity of the LCD can be adjusted being clear but unobtrusive.
The backlight off time can be adjusted within an interval of 10 up to 120 minutes or never (always on),
making the backlight of the LCD automatically turn off after the set time.
Password:
Password protection can be enabled, avoiding unauthorized users to make any adjustment to the system.
The password is a four-digit code. In default, the password is set to ‘0000’ which gives full access to the
system without requiring any password to be entered. If the configured password is different from ‘0000’,
the user will be requested to enter the password before any access to the systems functions is provided.
The currently set password will be shown and the adjusting digit can be selected (turns red) and confirmed
by turning and pressing the rotary selection dial. Consecutive digits will increase when the maximum
value has been reached.
After the desired password has been selected it can be confirmed by pressing (turns red) and turning the
function dial clockwise to the entire right side where the ‘OK’ word will appear. After pressing again the
password is confirmed.
Back:
Returning to the main screen is done by selecting ‘Back’.
Lock
Info
LCD Settings
Password
Back
GENERAL SETTINGS
Lock device with password

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Chapter 4
Additional information
Technical specifications
Control Front panel
RS-232
Inputs F-type antenna connection (75 Ω)
FM Tuning Range (-10 dB) 87.5 ~ 108 MHz
Sensitivity (1W/1m) -108 dBm
Signal / Noise 52 dB
THD+N (@ 1 kHz) 0.22%
Frequency Response (± 3 dB) 30 Hz - 12.5 kHz
Crosstalk (@ 1 kHz) 26 dB
DAB Tuning Range (-10 dB) Band-3 171 ~ 240 MHz
L-Band 1452 ~ 1492 MHz
Sensitivity (1W/1m) -99 dBm
Signal / Noise 81 dB
THD+N (@ 1 kHz) 0.026%
Frequency Response (± 3 dB) 42 Hz - 20 kHz
Crosstalk (@ 1 kHz) 53 dB
Outputs Type Balanced stereo line outputs (3-pin Euro
Terminal Block (Pitch-3.81 mm)
Level +8 dB ~ -32 dB
Power Consumption 0.7 W
Dimensions (W x H x D) 482 x 44 x 330 mm
Weight 3.150 kg
Mounting 19”
Unit height 1 HE
Construction Steel
Colours Black