SKY BLUE FMUSER User manual
FMUSER 15W Transmitter
Manual
This product uses a new generation of Japanese
ROHM's chip FM stereo radio emission (BH1415F)
Seiko-produced. This machine looks beautiful,
with gold-plated aluminum chassis fully closed,
compact structure, shielding is good, solid firm,
due to BH1415F integrates PLL frequency PLL, audio
pre-emphasis, limiter and low pass filter circuit,
the transmission frequency stability, quality
class, a high degree of stereo separation
performance than the other forums using ROHM's
predecessor (BA1404) produced a more superior
transmitter. Very suitable for the various
tertiary institutions, living quarters, towns and
villages and the need to launch high-power
high-fidelity audio signals to suit the occasion.
The machine operation simple and easy wiring.
Firing frequency of the front panel display using
LCD screen, step to 100Khz, through the bottom of
the "+" and "-" two touch switches to regulate the
frequency of upward and downward, fast and
intuitive. "Audio" as the standard 3.5mm stereo
input jack, you can easily connect to most home
stereo audio playback device. Back on the "DC12V"
power input socket, through the external 12V/5A
(optional larger current margin of) power adapter
input (jack inside the cathode), power adapter,
switching power supply recommended , such as
notebook computers and LCD monitors and other
external switching power adapter, connector
terminal with a magnetic ring filter is best, so
can greatly reduce the power of the transmitter
interference, conditional use 12V power supply to
the battery of the transmitter .
Machine parameters
Operating Voltage: DC 10V ~ 14V, recommend the use
of 12V;
Operating current: <5A;
Transmission frequency: 88 ~ 108MHz
Transmit Power:> 15W
Modulation Mode: FM
Frequency Offset: + /-75KHz
Output Impedance: 50 Europe
Harmonic radiation: <-55dbc
Pre-emphasis delay: 50us;;
Separation: 40dB;
Input Level:-13dBV;
Applicable to the microphone: Electret condenser
microphone
Operation instructions
1. Operation steps: installing an antenna---->>>
to connect the power ---->>>to connect audio
source---->>> to connect the microphone
2. Press the power button to boot into normal
working condition.
AS the step of the bottom:
In the back of the transmitter, the antenna
interface (ANT) as a BNC interface, therefore, the
antenna interface should also be as BNC. External
power adapter output voltage DC10 ~ 14V should be
within the range of maximum output current should
be in 4A above. As shown, the power adapter DC plug
connected to the transmitter back "DC12V" on top
of the power socket (Note the polarity is correct,
he is outside the negative)
As shown above, for connecting external sound
source audio lines connected to "AUDIO" interface.
Should use more cable shielding performance audio
cable, 3.5mm plug.
Connect the microphone
Connected to the "MIC" jack. And audio cable,
like a good selection of shielding wires, plugs
for 3.5mm. (Note: The microphone for the
microphone type is Electret condenser microphone.
Boot
After all the preparation work was ready, the
power adapter open, the transmitter is in standby
mode the screen displays "OFF":
Click on the front panel , The transmitter
will enter the normal working state, and then,
through the "+" or "-" It's two buttons to adjust
the working frequency of the machine required
frequency.
Special features of the setting
1. Attention
(1)Before booting, be sure to had connect
the antenna. It is strictly prohibited empty boot.
(2) Audio cable must use shielded cable.
(3)The power adapter output DC voltage is
selected as clean, so as not to interfere with the
transmitter.
(4) Avoid extreme hot or humid environment.
2. General troubleshooting.
A.The frequency can not be adjusted.
Reason: to set the frequency range may
be errors, high-frequency than low-end high
frequency.
Solution: re-setting the relevant
parameters (see instructions)
B. To open the boot method, press the power
button, the flash look, LCD displays "OFF"
Reasons: low-voltage, over-power
adapter with a lower load capacity.
Solution: replace the power adapter
(12V/4A)
C. Sound distortion serious
Cause: The input audio amplitude is
too large.
Workaround: down the volume of the
sound source.
This manual suits for next models
1
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