FMUser cze-01a - Audio and Connectivity Issues; Transmission Distance

5
Signal
detected on
receiver but
no sound
1）
Low volume output from
transmitter
2）
Line in cable not well
connected on transmitter
3）
Wrong
6
Sound
quality
is bad
1）
Low quality microphone
2）Line-
in volume too high
3）I
nstallation
incorrect
4）
Transmitter volume too
high
5）
Low quality
function on mobile phone
7
No sound
from
microphone
1）V
olume of microphone not
turned
up
2）
Not a
microphone.
8
MP3 cannot
play
1
）
TF card
2）
TF card
3）
Audio files are not MP3
format
4）
There are files of non
MP3 format in TF
5）
Quantity
card exceeds 1000.
9
Bluetooth
cannot
connect
1）
Mobile phone too far from
transmitter
2）
Mobile phone is not in
music play mode.

About
Transmission
Transmission range is greatly affected by the local RF environment,
setting, frequency
setting and receiver
may need to upgrade
the antenna to higher gain, or install the antenna on places at
altitude.
Generally speaking,
a rubber antenna brings up a transmission distance of around 120
FMUSER INTERNATIONAL GROUP INC.
广州市汉婷生物技术开发有限公司
Low volume output from
transmitter
Line in cable not well
connected on transmitter
Wrong
audio play mode
1）
Check if the line in cable is well
connected with transmitter.
2）Turn up
the volume of transmitter
3）Switch
to corresponding
play mode.
Low quality microphone
in volume too high
nstallation
of antenna is
Transmitter volume too
Low quality
Bluetooth
function on mobile phone
1
）
Set the microphone volume at
minimum when there is no
microphone connected.
2）
Use high quality microphone with
shielded wire.
3）Keep the line-
in
30%-50% when
input into
4）Use
mobile phone
Bluetooth
quality.
olume of microphone not
up
Not a
electret
microphone.
1）
Adjust the volume of microphone
between 30% to 70%
2）Use an
electret
TF card
not inserted
TF card
faulty
Audio files are not MP3
There are files of non
MP3 format in TF
card.
Quantity
of songs in TF
card exceeds 1000.
1
）
I
nsert TF card
and then press
to play.
2）
Check if the TF card is broken.
3）
Check if the TF card is in FAT32
format and the audio file
format.
4）Delete non-
MP3 files
5
）
Delete
songs
to
Mobile phone too far from
transmitter
Mobile phone is not in
the
music play mode.
1
）
Connect the
Bluetooth
the distance within 3 meters
2）Reboot
mobile phone
connect the
Bluetooth
3）Switch the
mobile phone to
play
mode
Transmission
Distance
Transmission range is greatly affected by the local RF environment,
antenna type, power
setting and receiver
sensitivity. If the
transmission range is short, you
the antenna to higher gain, or install the antenna on places at
a rubber antenna brings up a transmission distance of around 120
广州市汉婷生物技术开发有限公司
13 / 16
Check if the line in cable is well
connected with transmitter.
the volume of transmitter
to corresponding
audio
Set the microphone volume at
minimum when there is no
microphone connected.
Use high quality microphone with
in
volume at
input into
transmitter
mobile phone
with better
Adjust the volume of microphone
between 30% to 70%
electret
microphone
and then press
Check if the TF card is broken.
Check if the TF card is in FAT32
format and the audio file
s are MP3
MP3 files
to
less than
1000.
Bluetooth
and keep
the distance within 3 meters
mobile phone
and try to
Bluetooth
over 9 times.
mobile phone to
stereo
antenna type, power
transmission range is short, you
the antenna to higher gain, or install the antenna on places at
higher
a rubber antenna brings up a transmission distance of around 120