Roberts eco 4 Bt User manual

Please read this manual before use
ROBERTS
DAB / DAB+ / FM RDS Bluetooth digital radio

Controls ........................................................................... 2-3
Battery operation .................................................................4
Mains operation...................................................................4
Operating your radio - DAB .................................................5
Selecting a station - DAB.....................................................6
Display options - DAB...................................................... 7-8
Finding new stations - DAB .................................................9
Secondary services - DAB.................................................10
Manual tuning - DAB .........................................................11
Dynamic Range Control (DRC) - DAB...............................12
Prune stations - DAB.........................................................13
Operating your radio - FM auto-tune .................................14
Manual tuning - FM............................................................15
Display options - FM..........................................................16
Scan sensitivity setting - FM..............................................17
Stereo/Mono setting FM ....................................................18
Presetting stations.............................................................19
Recalling a preset station ..................................................20
Bluetooth mode ........................................................... 21-26
Connecting Bluetooth devices...........................................22
Playing audio files in Bluetooth mode................................23
Contents
Connecting and disconnecting a Bluetooth device...... 24-25
Display options - Bluetooth mode......................................26
Software version................................................................27
Language function.............................................................28
System reset......................................................................29
Headphone socket.............................................................30
Auxiliary Input socket.........................................................30
Mains supply......................................................................31
USB socket for software upgrades....................................31
Display backlight................................................................32
Cautions ............................................................................32
Specifications ....................................................................33
Circuit features ..................................................................33
Guarantee..........................................................................34
1

Controls
1. On / Off button
2. Mains LED indicator
3. Treble control
4. LCD display
5. + 5 button
6. Auto Tune button
7. Mode button
8. Info / Menu button
9. Select / Play/Pause button
10. Tuning Up / Next button
11. Tuning Down / Previous button
2
Mode
(Top)
123 5 7 8 9 10
16
15 14
46 11
12
12. Tuning / Next / Previous control
13. Speakers x 2
14. Station Preset buttons
15. Bass control
16. Volume control
13
13

Controls (rear)
17. Telescopic aerial
18. USB socket (for service use only)
19. Auxiliary Input socket
20. Headphone socket
21. Mains Input socket
22. Battery compartment
3
17
21
18 19 20
22
Note: When the Auxiliary Input socket is not in use you must
ensure that nothing is plugged into the socket in order to enable
use of the DAB, FM and Bluetooth operating modes of your radio.

Battery operation
1. Remove the Battery cover on the rear of the unit by pushing the
battery door in and downwards.
2. Insert six LR20 (D size) batteries into the spaces in the compartment.
Take care to ensure all batteries are inserted with the correct polarity
as shown inside the battery compartment. Replace the battery cover.
3. Reduced power, distortion and a 'stuttering' sound are all signs that
the batteries may need replacing.
4. If the radio is not to be used for any extended period of time it is
recommended that the batteries are removed from the radio.
We would recommend for economy that the eco4 Bt is used via the
mains whenever possible with battery operation for occasional use
only.
IMPORTANT: The batteries should not be exposed to excessive heat
such as sunshine, fire or the like. After use, disposable batteries should
if possible be taken to a suitable recycling centre. On no account
should batteries be disposed of by incineration.
4
1
Mains operation
1. Place your radio on a flat surface.
2. Plug the mains lead into the Mains Input socket located on the rear
of your radio ensuring that the plug is pushed fully into the socket.
3. Plug the other end of the mains lead into the wall socket and switch
on the wall socket. The mains LED will light. Whenever the mains is
used the batteries are automatically disconnected.
IMPORTANT: The mains plug is used as the means of connecting the
radio to the mains supply. The mains socket used for the radio must remain
accessible during normal use. In order to disconnect the radio from the
mains completely, the mains plug should be removed from the mains
socket outlet completely.

5
Operating your radio - DAB
1. Carefully extend the telescopic aerial. The aerial should be fully
extended and positioned vertically for optimum reception.
2. Press and release the On/Off button to switch on your radio. The
display will show 'WELCOME' for a few seconds. After each use the
radio will remember the mode used and then switch on in that mode
the next time that it is used.
3. If this is the first time the radio is used a scan of the Band III DAB
channels will be carried out. This is known as 'Auto tune'. If the radio
has been used before the last used station will be selected.
4. DuringAuto tune each group of stations will be detected and the station
count will be updated.
5. When the Auto tune is completed the first station (in numeric-alpha
order 0...9...A....Z) will be selected. The first station in the list of stations
found will be played.
6. If no stations are found then 'OFF AIR' will be displayed and it may be
necessary to relocate your radio to a position giving better reception.
You should then carry out an auto tune to find stations as described
on page 9 (see Finding new stations on page 9).
7. Adjust the Volume, treble and bass controls to the required setting.
• Your radio has an indicator on the display to indicate the strength
of the DAB radio signal being received.
2
77
7

6
4
3
3
3
Mode
2
1,7
6
6
6
Selecting a station - DAB
1. Press and release the On/Off button to switch on your radio.
2. Press and release the Mode button until the 'DAB' mode is selected.
The display will then show the name of the radio station currently
selected.
3. Rotate the Tuning control or press and release the Tuning Up or
Down buttons to step through the list of available stations.
4. When the desired station name appears on the display, press and
release the Select button to select the station. The radio will select
the new station.
5. Approximately 20 seconds after tuning to a new radio station the
display will revert to showing the current time and day.
6. Adjust the Volume, treble and bass controls to the required setting.
7. To switch off the radio press and release the On/Off button.
The use of station presets for selected radio stations is described on
page 19.
Note: If after selecting a station the display shows 'OFF AIR' it may be
necessary to relocate your radio to a position giving better reception.

7
Display options - DAB
Your radio has a range of display options when in DAB mode:-
1. Press and release the Info / Menu button to cycle through the various
options.
All display options except the scrolling text display will revert to the
clock display after about 20 seconds.
a. Time and day Displays the current time
and day of the week.
b. Date Displays the current date.
c. Station name Displays the name of the DAB station
being listened to.
d. Scrolling text Displays scrolling text messages such
as artist/track name, phone in number,
etc.
e. Programme type Displays the type of station being
listened to e.g. Pop, Classic, News, etc.
a
b
c
d
1
e

8
i
h
Display options DAB - cont
f. Multiplex Name Displays the name of the DAB multiplex
to which the current station belongs.
g. Frequency Displays the frequency for the
currently tuned DAB station.
h. Bit rate Displays the digital audio bit rate for the
currently tuned DAB station.
i. Signal strength Displays the signal strength for the station
being listened to.The minimum signal
marker shows the minimum signal
strength required for clear DAB reception.
f
g

9
Finding new stations - DAB
As time passes new stations may become available or you may have
moved to a different part of the country. In this case you may need to
cause your radio to scan for new stations.
1. Press and release the On/Off button to switch on your radio.
2. If needed, press and release the Mode button until the DAB mode is
selected.
3. Press and release the Auto Tune button. Your radio will perform a
scan of the Band III DAB channels. As new stations are found, the
station counter on the right-hand side of the display will increase and
stations will be added to the list.
4. Alternatively to scan for stations, press and hold the Info/Menu button.
The DAB menu will show on the display.
5. Rotate the Tuning control or press and release the Tuning Up or
Down buttons until the display shows 'SCAN'.
6. Press and release the Select button. Your radio will perform a scan
of the Band III DAB channels.
6
5
Mode
2
4
3

10
Secondary services - DAB
1. Certain radio stations have one or more secondary services associated
with them. If a station has a secondary service associated with it then
the secondary service will then appear immediately after the primary
service as you rotate the Tuning control or press and release the
Tuning Up button.
2. To tune to the secondary service, press and release the Select button.
Most secondary services do not broadcast continually and if the selected
service is not available, the radio will re-tune to the associated primary
service.
2
1
1

Manual tuning - DAB
Manual tuning allows you to tune your radio to a particular DAB frequency
in Band III. Any new stations found will be added to the station list. This
function can also be used to assist the positioning of the aerial or the radio
to optimise reception for a specific channel or frequency.
1. Press and hold the Info/Menu button. The DAB menu will show on
the display.
2. Rotate the Tuning control or press and release the Tuning Up or
Down buttons until the display shows 'MANUAL'.
3. Press and release the Select button to enter the manual tune mode.
4. Rotate the Tuning control or press and release the Tuning Up or
Down buttons to select the desired DAB channel.
5. Press and release the Select button to tune to the chosen frequency.
6. If a signal is present, this will be indicated on a signal strength display.
The minimum signal marker ( ) shows the minimum signal strength
needed for good DAB reception. The signal indicator chevrons go up
or down showing the changing signal strength as you adjust the aerial
or your radio position.
7. Press and release the Select button again to return to the frequency
option. You may then tune to another DAB channel or alternatively
press and release the Menu button to exit manual tuning.
11
3-7
2,4
1,7
2,4
2,4

12
Dynamic Range Control (DRC) - DAB
The DRC facility can make quieter sounds easier to hear when your radio
is used in a noisy environment.
There are three levels of compression:
DRC 0 No compression applied. (default)
DRC 1/2 Medium compression applied.
DRC 1 Maximum compression applied.
1. Press and release the On/Off button to switch on your radio.
2. Press and release the Mode button until the DAB mode is selected.
3. Press and hold the Info/Menu button. The DAB menu will show on
the display.
4. Rotate the Tuning control or press and release the Tuning Up or
Down buttons until 'DRC' appears on the display. Press and release
the Select button. The display will show the current DRC value.
5. Rotate the Tuning control or press and release the Tuning Up or
Down buttons to select the required DRC setting (default is 0).
6. Press and release the Select button to confirm the setting.After several
seconds the display will return to the normal radio display.
Note: Not all DAB broadcasts are able to use the DRC function. If the
broadcast does not support DRC, then the DRC setting in the radio will
have no effect. 4,6
4,5
3
4,5
4,5
Mode
2

Prune stations - DAB
Over time, some DAB services may stop broadcasting, or may change
location and then not be able to receive a station. In order to remove such
stations from the DAB station list, the Prune stations function will delete the
DAB stations from your station list that can no longer be received.
Stations which cannot be found or which have not been received for a very
long time are shown in the station list with a question mark.
1. Press and release the On/Off button to switch on your radio.
2. Press and release the Mode button until the DAB mode is selected.
3. Press and hold the Info/Menu button. The DAB menu will show on the
display.
4. Rotate the Tuning control or press and release the Tuning Up or Down
buttons until 'PRUNE' appears on the display. Press and release the
Select button.
5. Rotate the Tuning control or press and release the Tuning Up or Down
buttons to select 'Y'. Press and release the Select button to cause the
stations list to be pruned, eliminating unavailable stations.
6. If you do not wish to prune stations select 'N' in step 5 and then press
and release the Select button. The display will revert back to the previous
display.
7. Press and release the Info/Menu button to return to normal playing
display.
Note: If you have moved to a different part of the country you should
also carry out a search for new stations (please see the section 'Finding
new stations' on page 9).
13
4-6
4-6
3,7
4-6
4-6
Mode
2

14
Operating your radio - FM auto-tune
1. Carefully fully extend the telescopic aerial located on the rear of your
radio.
2. Press and release the On/Off button to switch on your radio.
3. Press and release the Mode button until the FM mode is selected.
4. Press and hold the Tuning Up button for 2 seconds or rotate the Tuning
control clockwise and then press and release the Auto Tune button
to cause your radio to search from low frequency to high frequency
and to stop automatically when it finds a station of sufficient strength.
5. After a few seconds the display will update. The display will show the
frequency of the signal found. If the signal is strong enough and there
is RDS data present then the radio may display the station name.
6. To find other stations press and hold the Tuning Up button for 2
seconds or press and release the Auto Tune button as before.
7. Press and hold the Tuning Down button for 2 seconds or rotate the
Tuning control anti-clockwise and then press and release the Auto
Tune button to cause your radio to search from high frequency to low
frequency and to stop automatically when it finds a station of sufficient
strength.
8. When the end of the waveband is reached your radio will recommence
tuning from the opposite end of the waveband.
9. Adjust the Volume, treble and bass to the required settings. To switch
off your radio, press and release the On/Off button.
Mode
3
4-7
7
4,6
4-7
2,9
9
9
9

Manual tuning - FM
1. Carefully fully extend the telescopic aerial located on the rear of your
radio.
2. Press and release the On/Off button to switch on your radio.
3. Press and release the Mode button until the FM mode is selected.
4. Rotate the Tuning control or press and release the Tuning Up or
Down buttons to tune to a station. The frequency will change in steps
of 50kHz.
If the radio is tuned to a station of sufficient signal strength with RDS
information present, then the display may change to show the station
name.
5. When the waveband end is reached the radio will recommence tuning
from the opposite waveband end.
6. Set the Volume, treble and bass to the desired setting.
7. To switch off your radio press and release the On/Off button.
15
Mode
3
4
4
4
2,7
6
6
6
If you find that an FM broadcast has a lot of background hiss, this may
often be reduced by setting the radio into Mono reception mode for the
current FM station. Please refer to the section 'Stereo / Mono setting - FM'
on page 18 for further details.

16
Display options - FM
Your radio has a range of display options for the FM mode:-
The Radio Data System (RDS) is a system in which inaudible digital
information is transmitted in addition to the normal FM radio programme.
RDS offers several useful features.The following are available on your radio.
1. Press and release the Info/Menu button to cycle through the various
options. All display options except the text display will revert to the
clock display after about 20 seconds.
a. Time and day Displays the current time and day.
b. Date Displays current date.
c. Station name Displays the name of the radio station being
listened to.
d. Scrolling text Displays scrolling text messages such
as artist/track name, phone in number,
etc.
e. Programme type Displays type of station being listened to
e.g. Pop, Classic, News, etc.
f. Audio mode Displays the audio mode for the station
being listened to.
Note: If no RDS information is available, the radio will be unable to display
the station name, scrolling text and programme type information.
c
d
e
a
b
1
f

Scan sensitivity setting - FM
Your radio will normally scan for FM broadcasts which are strong enough
to give good reception. However, you may wish the Auto-scan function
to also be able to find weaker signals, possibly from more distant radio
transmitters. Your radio includes a local / distant option for the Auto-scan
function.
1. Press and release the On/Off button to switch on your radio.
2. Press and release the Mode button until the FM mode is selected.
3. Press and hold the Info/Menu button. The FM menu will show on the
display.
4. Rotate the Tuning control or press and release the Tuning Up or
Down buttons until 'SCAN' shows on the display. Press and release
the Select button.
5. Rotate the Tuning control or press and release the Tuning Up or
Down buttons to switch between 'LOCAL' and 'DISTANT' options
on the display. The Distant option will allow the radio to find weaker
signals when scanning.
6. Press and release the Select button to confirm your selection. The
radio will then revert to the normal information display. The Local or
Distant setting is stored in the radio and remains in force until changed
or until a System Reset.
Note: The initial setting (out of the box, or after a System Reset) causes
the radio to ignore weaker (or more distant) signals.
17
4-6
4,5
3
4,5
4,5
Mode
2

18
Stereo / Mono setting - FM
Your radio will play stereo broadcasts in stereo so long as the received
signal is of adequate strength. However, as a stereo signal becomes weaker
the audio signal will become poorer. It may be preferable to force the radio
to play the station in mono in order to reduce the level of audio noise.
1. If the FM radio station being received is weak some hiss may be
audible. To reduce the hiss press and release the Select button until
the display shows 'MONO'. Your radio will switch to mono mode.
2. To return to stereo mode press and release the Select button until the
display shows 'STEREO'. Your radio will switch to stereo mode.The
radio will play the current station in stereo if the signal is sufficiently
strong.
1,2

19
Presetting stations
You may store your preferred DAB and FM radio stations to the preset
station memories. There are 20 memory presets in your radio, 10 for
DAB and 10 for FM. Presets are remembered by your radio in the event
of a power failure.
The procedure for setting presets and using them to tune stations is the
same for FM and DAB modes, and is described below.
1. Press and release the On/Off button to switch on the radio.
2. Press and release the Mode button to select either the FM or DAB
mode.
3. Tune to the required station as previously described.
4. Press and hold down the required Preset button until the display
shows e.g. 'P1 SAVED'. The station will be stored under the chosen
preset button. Repeat this procedure for the remaining presets.
5. Presets 6 to10 are obtained by pressing and holding +5 button together
with the Preset button 1 to 5. e.g. preset 7 can be set by pressing
and holding +5 button together with Preset button 2until the display
shows 'P7 SAVED'.
6. Stations which have been stored in preset memories may be overwritten
by following the above procedure.
Mode
2
4
5
5