Acekool SK-BTI-029 User manual

SK-BTI-029 Toslink/SPDIF Bluetooth
transmitter & receiver
User manual
Welcome to use Toslink/SPDIF Bluetooth transmitter & receiver SK-BTI-029
Production description:
SK-BTI-029 is a Bluetooth transmitter and receiver with Toslink.
When used as a Bluetooth transmitter, it can transfer the music on your mobile, Walkman,
TV, computer, etc to your Bluetooth receiver, Stereo Bluetooth headphone, and
Bluetooth speakers through wireless technology.
When used as a Bluetooth receiver, it can been a stereo Bluetooth headphone (by
plugging headphone audio cable into 3.5mm port), or connecting with speaker to receive
audio signal through wireless.
Please read the user manual carefully before use the unit.
Preparation before use
when ready to use SK-BTI-029, you need fully charged of SK-BTI-029, music players, mobile
phones, televisions or computer support Fiber optic interface or 3.5MM audio interface output
devices.
Product picture and function definitions:
A, Multi-function keys
B, mode selection switch (TX: transmitter; RX: receiver)

A.Power button
B.TX(transmitter) ,RX(receiver) switch function
C, interface selector switch (AUX: 3.5mm audio interface; SPDIF: optical interface)
D, 3.5MM audio line interface (audio input / output)
E, optical fiber input interface
F, optical output interface
G, Micro USB charging port
H, LED indicator
Specification:
Model No
SK-BTI-029
Bluetooth Version
V4.1，Class Ⅱ
Chipset
CSR BC8670
Frequency
2.402GHz-2.480GHz
Receiver working time(AUX)
15Hours
Transmitter working time(AUX)
15Hours
Receiver working time(SPDIF)
12Hours
Transmitter working time(SPDIF)
12Hours
Charging time
About 2Hours
Bluetooth Profile
RX:A2DP AVRCP
TX:A2DP
Support dual stream（TX mode）
support(one transmitter connect two
Bluetooth speaker or Headphone(use one
CEDEC at the same time)
Support dual connection in receiver mode
Support connecting with two mobile phone
Support for Bluetooth headset, Bluetooth
receiver, Bluetooth speakers and other
device keys
0000，1111，1234，8888
CODEC
TX: Priority APT-X, Second SBC, Third:
APTX-LL; Fourth: FastStream
RX:SBC
APTX tips
CODEC Single connection, priory support
APT-X LL，48kHZ CODEC (headset or
speaker must also support APT-X );
Two connections, it will switch to SBC
CODEC automatically
Battery
350mAh rechargeable lithium battery
Charging supply
100-240V AC Adapter
5VDC,≥300mA
Working temperature
-10—55℃
Net weight
About 38.6g
Dimension
60*60*18.4mm
Operation:
SK-BTI-029 charging:

1.First time charging :
Please fully charged the model SK-BTI-029 before using.
2.Charging in low power
When the red LED light is flashing in normal use, it indicates that the SK-BTI-029 is in low
battery mode and needs to be recharged(it is normal for the blue and red LED light overlap
when using in low power and charging while working)
A, Connect the charging cable to the charging adapter(with USB output connector) or to the
computer.
B, and then connect the Micro USB side to the SK-BTI-029.
C, The red LED light on whiling charging, red LED off when fully charged..
D, the charging time takes about 2 hours.
SK-BTI-029 working as transmitter function and LED instruction
SK-BTI-029 is through toggle switch to select the mode is transmitter or receiver mode
after powered on. In power off status, switch to “TX” end, and long press "multi-function
key" to power on, all paired device information will be cleared in RX mode after powered
on!!!Please don’t switch TX/RX mode within 3 seconds after powered off, because the
chipset has not been fully powered down, the mode is maybe still keep the same state as
before powered off if you switch the mode.
SK-BTI-029 can store 4 devices information used as a transmitter, the exceed device
information will be replaced by new device information（why is store 4 ? Because the
SK-BTI-029 will re-connect all the paired devices after powered on, it will take long for
too many devices)
SK-BTI-029 automatically re-connection time : 7 seconds for the unit has 1 paired record,
12 seconds for the unit has 2 paired records ,17 seconds for the unit has 3 paired
records , 22 seconds for the unit has 4 paired records.
1. Power on
In off state, press MFB around 3 seconds, Blue LED flashes twice, SK-BTI-029 is powered on.
(If SK-BTI-029 did not connect with any device, it could enter into pairing mode quickly with
Blue LED flashes after power on)
2. Power off :
In on state, press MFB around 3 seconds, Red LED flashes twice ( if release after Red LED
immediately, Red LED may only flashes once), SK-BTI-029 power off. Please re-power on the
unit after power off the unit 3 seconds later since the voltage of the chipset may not disappear
totally.
3. Pairing mode :
Power on the unit, double click the MFB, the Blue LED flashes quickly to enter pairing mode.
4. Clear up the pairing list :
Power off with the current working mode(TX or RX), 3 seconds later, switch to the other
working mode, then power on, the pairing information for the former mode will be cleared up.
5.Re-connect with all the connected device:

Power on the unit ( using two connections simultaneously ), short press MFB to
connect all the connected device automatically, but it only support two devices
connection simultaneously, prioritize the latest two connected devices, successfully
connected, BTI-029 is solid blue. If BTI-029 could not connect with any device in 22
seconds (This is up to how many paired device BTI-029 stored), it will enter into
pairing mode. When used as Bluetooth transmitter, it support two connected devices
transfer Audio simultaneously.
6. Power off automatically
The SK-BTI-029 will power off automatically when the battery voltages lower than 3.1V.
7. Pairing status:
Blue Led light flash quickly used as Bluetooth transmitter status.
8. No connection standby status:
Blue Led light flash once every second in no connection standby status
9. Connected standby status:
Blue Led long light in connected standby status
10. Low battery status :
Low battery status (RX):red LED flashes once every one second，and it will cover other Led
light (Charging immediately or power off will remove this status).
11. Interface switching:
In off state or working state, switch between AUX and SPDIF through the toggle switch(If
choose SPDIF mode,the optical interface using SPDIF IN in TX mode)
12. SK-BTI-029 working while charging
When need to use the SK-BTI-029 for long time, due to the limited built-in battery usage time,
it allowed to connect the charging power supply (DC 5V ≥300mA, when the battery is low or
when the power supply of poor quality may cause the current sound appears); operation
steps: connect the charging power and then power on SK-BTI-029,(because the chipset will
reset operation when insert charging power supply, can resume normal use when SK-BTI-
029 software crashes).,Note: it is not recommend to use this function while charging ,
otherwise it may affect battery life.
SK-BTI-029 working as receiver function and LED instruction
SK-BTI-029 is through toggle switch to select the mode is transmitter or receiver mode
after powered on. In power off status, switch to “RX” end, and long press "multi-function
key" to power on, all paired device information will be cleared in TX mode after powered
on!!!Please don’t switch TX/RX mode within 3 seconds after powered off, because the
chipset has not been fully powered down, other wise it will enter into the previous power
off mode to re-turn on
SK-BTI-029 worked as Bluetooth Receiver can store 8 paired devices record , the latest
paired records will be replaced by new paired records.(but the re-connection time will
increase for more Stored paired device,SK-BTI-029 automatically re-connection time : 7
seconds for the unit has 1 paired record, 12 seconds for the unit has 2 paired records ,17
seconds for the unit has 3 paired records , 22 seconds for the unit has 4 paired records)
1. Power on:

In off state, long press MFB around 3 seconds, after Blue LED flashes twice, SK-BTI-
029 is powered on. (If SK-BTI-029 did not connect with any device, it could directly
enter into pairing mode automatically after power on)
2. Power off：
In on state, long press MFB around 3 seconds, Red LED flashes twice ( if release after Red
LED on immediately, Red LED may only flashes once),SK-BTI-029 is powered off. Please
don’t re-power on the unit immediately in 3 seconds after power off the unit , because the
voltage of the chipset may not disappear totally.
3. Pairing mode:
Power on the unit, double click the MFB, Blue & Red LED flashes alternately, the unit enter
into pairing mode, it will power off automatically if no connections in 5 minutes.
4. Play /pause :
In music playing, short press MFB to pause, press again to play continually
5. Clear up the pairing list :
Power off with the current working mode, 3 seconds later, change to the other working mode,
then power on, the pairing information for the former mode will be cleared up
6. Re-Connect with all the connected device:
Power on the unit,SK-BTI-029 will connect to all the connected device automatically, but it
only support two connections simultaneously, prioritize the latest two connected devices, after
two connections successful, SK-BTI-029 will be Blue LED light on. (working as Bluetooth
receiver, it only could receive audio from the first working device ,If you want to receive signal
from the other device, the first working device must have to be pause or turn off . (Bluetooth
receiver two in one function).
7. Automatic power off:
When the battery voltage is below 3.1V will automatically shut down;
It will automatically power off if there is no connection under non-matching record after 5
minutes ;
If the product has a matching record, it will automatically power off if there is no connection
more than about 6 minutes, it takes about 1 minute to re-connect.
8. Pairing status:
Blue and red Led light flash alternately used as Bluetooth receiver status.
9. No connection standby status:
Blue Led light flash twice every two seconds in no connection standby status
10. Connected standby status:
Blue Led long light in connected standby status
11. Low battery status :
Low battery status (RX):red LED flashes once every one second，and it will cover other Led

light (Charging immediately or power off will remove this status).
12. Interface switching:
In off state or working state, switch between AUX and SPDIF through the toggle
switch(If choose SPDIF mode,the optical interface using SPDIF OUT in RX mode)
12. SK-BTI-029 working while charging
When need to use the SK-BTI-029 for long time, due to the limited built-in battery usage time,
it allowed to connect the charging power supply (DC 5V ≥300mA, when the battery is low or
when the power supply of poor quality may cause the current sound appears); Note: it is not
recommend to use this function while charging , otherwise it may affect battery life.
.
Working in Transmitter mode
1,SK-BTI-029 and stereo Bluetooth headphone or Bluetooth speaker (A2DP enabled)
work on the TV
A, Make the Bluetooth speaker or Bluetooth headset in pairing mode.
B, Press MFB around 3 seconds until Blue LED flashes quickly to enter into searing mode, if
SK-BTI-029 does not enter into pairing mode, press double click MFB ( keep the operation
consistently ) to enter into pairing mode.
C, Put the SK-BTI-029 and Bluetooth speaker or Bluetooth headset together, around 30s
seconds later, BTI-029 will connect with Bluetooth speaker or Bluetooth headset automatically
D. Connect the SK-BTI-029 and TV with fiber optic cable or 3.5mm audio cable(headphone
cable interface) or optical output interface(SPDIF IN)
E. It could hear the sound coming from TV in the Bluetooth headset or Bluetooth speaker. If
no sound from the Bluetooth speaker or Bluetooth headset, please check the aux output or
fiber optic output setting on TV , the volume of the TV is loud enough, the cable connects right
or not. Use your finger to touch the DC part of the audio cable that connected with SK-BTI-
029 to check if the audio source has problems. When the connection is successful and the
volume of headset or speaker is big enough, you will hear a “zi,zi” sound, it means SK-BTI-
029 and Bluetooth speaker or Bluetooth headphone and cables are ok, the problem may be
on the audio source (TV）.
2,SK-BTI-029 and Bluetooth headset or Bluetooth speaker (which must support A2DP )
work together on the computer.
A. Make the Bluetooth speaker or Bluetooth headset in pairing mode.
B. Press MFB around 3 seconds until Blue LED flashes quickly to enter into pairing mode, if
SK-BTI-029 does not enter into pairing mode, double click MFB ( keep the action
consistently )) to enter into pairing mode.
C. Put the SK-BTI-029 and Bluetooth speaker or Bluetooth headphone together, around 30
seconds later, SK-BTI-029 will connect with Bluetooth speaker or Bluetooth headphone
automatically.
D. Connect the SK-BTI-029 and computer with fiber optic cable or 3.5mm audio
cable(headphone cable interface) or optical output interface(SPDIF IN)
E. It could hear the sound coming from computer in the Bluetooth headset or Bluetooth
speaker. If no sound in the Bluetooth speaker or Bluetooth headset, please check the aux
output setting on computer is the headset output or fiber optic output, the volume of the

computer is loud enough, the cable connects right or not. Use your hands to touch the plug of
the audio cable for SK-BTI-029 to check if the audio source has problems. When the
connection is successful and the volume of headset or speaker is big enough, you will hear a
“zi,zi” sound, it means SK-BTI-029 and Bluetooth speaker or Bluetooth headphone and
cables are ok, the problem may be on the computer.
Note: Pass code for supported Bluetooth headset, Bluetooth receiver, Bluetooth speaker etc.
is ”0000”,”1234”,”1111”,”8888” )
3.SK-BTI-029and Bluetooth headset or Bluetooth speaker that supported A2DP profile
worked on other audio device (must supports headphone cable or fiber optic cable ). SK-BTI-
029 and Bluetooth headset or Bluetooth speaker could replace a wired earphone from wired
connection to wireless connection, remove the wire limited, bring more fun for you.
SK-BTI-029 connect with two device simultaneously while working as a Bluetooth
transmitter
This unit could connect with two stereo Bluetooth speakers or Bluetooth headsets to
play music simultaneously
1. Named the two Bluetooth headsets or two Bluetooth speakers as A and B.
2.Pairing with A, power on A and enter Bluetooth pairing mode(Usually red and blue lights
flashing alternately, but some are led light flash quickly, different from the normal state,
depending on your Bluetooth headset / speaker function operation)
3.Long press SK-BTI-029 “multi-function button" for three seconds until the blue LED blinks
quickly enter pairing search mode, if SK-BTI-029 don’t automatically enters pairing mode, you
can double-click " multi-function key "(the action should be coherent) after enter pairing mode.
4.Put SK-BTI-029 and A together, waiting around 30s,you will see SK-BTI-029 blue led long
light after it paired with A successfully, connect SK-BTI-029 to sound source and you can
here voice from A, power off A and SK-BTI-029 after connection successful.
5.power on B and pairing with SK-BTI-029.(following the same pairing steps with A),power off
SK-BTI-029 after pairing successful.
6.Power on A (do not enter into pairing mode, but if it enters into pairing mode, it’s ok),
around 10-20 seconds later (in this case, most of the Bluetooth speaker is for automatically
connection, please wait a moment)
Then power on the SK-BTI-029 (no need to enter into pairing mode), it will search and
connect with device A and B automatically, the pairing time will take around 30 seconds. Then
connect to audio resource to check if the two devices could play simultaneously. If not, please
power off SK-BTI-029, and power on SK-BTI-029 to connect with device A and B. If it does
not work, please follow the steps for two connections simultaneously again. Please note that
there is no other Bluetooth headset or speaker enters pairing mode when you do the
operation connect with two devices.
The compatibility testing report for SK-BTI-029 worked as Bluetooth transmitter to
connect with two device simultaneously
1. Due to different Bluetooth chipset has different function firmware setting and different
operations so some Bluetooth speaker or Bluetooth headset may have compatible problems
with SK-BTI-029. When one of the devices has no sound or discontinuous playing, please re-
pair the two devices two or three times to check if there has same situation, then we could
have a result if it is wrong in compatibility
2. There so many Bluetooth speaker, Bluetooth headphone with different Bluetooth chipset on
the market. We tested the different Bluetooth chipset compatibility with SK-BTI-029:

Bluetooth transmitter
Chipset for device A
Chipset for device B
result
SK-BTI-029
CSR 8635
CSR 8635
pass
SK-BTI-029
CSR 8635
CSR 8645
pass
SK-BTI-029
CSR 8635
CSR 8610
pass
SK-BTI-029
CSR BC57E687C
CSR 8635
pass
SK-BTI-029
CSR BC57F687A05
CSR 8635
pass
SK-BTI-029
CSR 8635
CSR 8640
pass
SK-BTI-029
CSR 8635
ISSC1681S
pass
SK-BTI-029
CSR 8635
WS9623
pass
SK-BTI-029
CSR 8635
BK 8006
pass
SK-BTI-029
CSR 8645
CSR 8645
pass
SK-BTI-029
CSR 8610
CSR 8645
pass
SK-BTI-029
CSR BC57F687A05
CSR 8645
pass
SK-BTI-029
CSR 8645
CSR 8640
pass
SK-BTI-029
ISSC1681S
CSR BC8645
pass
SK-BTI-029
CSR BC57E687C
CSR 8645
pass
SK-BTI-029
CSR BC8635
CSR 8645
pass
SK-BTI-029
WS9623
CSR 8645
pass
SK-BTI-029
CSR 8645
BK 8006
pass
SK-BTI-029
CSR 8610
CSR 8610
pass
SK-BTI-029
CSR BC57E687C
CSR 8610
pass
SK-BTI-029
CSR 8640
CSR 8610
pass
SK-BTI-029
ISSC1681S
CSR 8610
pass
SK-BTI-029
BC57F687A05
CSR 8610
pass
SK-BTI-029
WS9623
CSR 8610
pass
SK-BTI-029
BK 8006
CSR 8610
pass
SK-BTI-029
CSR BC57E687C
CSR 8640
pass
SK-BTI-029
CSR 8640
CSR 8640
pass
SK-BTI-029
CSR BC57F687A05
CSR 8640
pass
SK-BTI-029
WS9623
CSR 8640
pass
SK-BTI-029
ISSC1681S
CSR 8640
pass

SK-BTI-029
BK 8006
CSR 8640
pass
SK-BTI-029
CSR BC57F687A05
CSR BC57F687A05
pass
SK-BTI-029
CSR BC57F687A05
CSR BC57E687C
pass
SK-BTI-029
CSR BC57F687A05
ISSC1681S
pass
SK-BTI-029
CSR BC57F687A05
WS9623
pass
SK-BTI-029
CSR BC57F687A05
BK 8006
pass
SK-BTI-029
ISSC1681S
WS9623
pass
SK-BTI-029
ISSC1681S
ISSC1681S
pass
SK-BTI-029
ISSC1681S
BK 8006
pass
SK-BTI-029
BK 8006
BK 8006
pass
SK-BTI-029
CSR BC57E687C
CSR BC57E687C
pass
SK-BTI-029
CSR BC57E687C
WS9623
pass
SK-BTI-029 connect with two device simultaneously while working as a Bluetooth
receiver
SK-BTI-029 could connect with two mobile phone simultaneously (but could not play
music from two mobile phone at the same time. you could choose any mobile phone to
play music, but it need to pause or end the music from other mobile phone )
1. Named the two mobile phone as A and B.
2. Following the pairing steps to connect A with SK-BTI-029, after successful connection,
please switch off the Bluetooth of the mobile A. Double click MFB of SK-BTI-029 to enter into
pairing mode.
3. Connect mobile B with SK-BTI-029. After successfully connection, power off SK-BTI-029.
Switch on the Bluetooth of mobile A ,and the power on SK-BTI-029, SK-BTI-029 will connect
automatically with the two mobile phones around 30 seconds.
4.Note:There will be only have one mobile phone can play music at the same time for the
connected A and B, if you want to play music of another mobile phone, Pause the first one or
turn off the music of the first one.
Package content:
SK-BTI-029
1PC
fiber optic cable
1PC
3.5mm Audio cable
1PC
Charging line
1PC
User manual
1PC
Tips for pairing：

1. Put the Bluetooth headset or Bluetooth speaker into pairing mode. Then power on SK-BTI-
029 will connect to SK-BTI-029 quickly again, if the Bluetooth headset or Bluetooth speaker
connected with SK-BTI-029 before. No need to make the SK-BTI-029 enter into pairing mode.
2. If SK-BTI-029 did not connect with the Bluetooth headset or speaker more than 1 minutes.
Please try to clear up the pairing list of the SK-BTI-029. If the Bluetooth headset or Bluetooth
speaker connected with SK-BTI-029 before, please reopen the SK-BTI-029 after clear up the
pairing list.
Battery information
Your device is powered by a rechargeable battery .The full performance of a new battery is
achieved only after two of three complete charge and discharge cycles .The battery can be
charged and discharged hundreds of times, but it will eventually wear out. Do not leave a fully
charged battery connected to a charger since overcharging may shorten battery lifetime. If left
unused, a fully charged battery will lose power with time past. Leaving the device in hot or
cold places, such as in closed car in summer or winter conditions , will reduce the capacity
and lifetime of the battery .Should always try to keep the battery between 15 ℃and 25 ℃.
Battery performance is particularly limited in temperatures well below freezing .Do not dispose
of batteries in a fire as they may explode .Battery may also explode if damaged.
Safety instruction
Your device is excellent produce in design and craft, should be used with caution. The
following suggestions will help you effectively use warranty service.
1. Keep the unit away from children .
2. Maintain equipment dry, rain, moisture and all kinds of liquids or moisture can contain
minerals, corrode electronic circuit.
3. If the device is wet, please make it completely dry.
4. Do not use or put the devices in dust or dirt storage , it will damage the detachable parts
and electronic components.
5. Do not use equipment stored in overheating, high temperature will shorten the service life
of electronic devices, damage batteries, make some plastic parts deformation or melt.
6. Do not use equipment stored in a cold place, or when the device temperature to room
temperature, its internal will form the moisture, it will destroy circuit board.
7. Do not attempt to disassemble the equipment.
8. Do not throw, beat or vibration equipment, rough treatment equipment can damage the
internal circuit board and sophisticated structure.
9. Do not use strong chemicals, detergent or detergent to clean the device.
10. Do not use pigment daub equipment, daub will block sundries in the removable
components and thus affect the normal operation.
Note: Don’t stored SK-BTI-029 separate for more than one month without working, it should
maintain charging one time every moth if long time working. It can prevents built-in battery
uncontrolled excessive self-discharge phenomenon during storage.