User Instructions

- 6 -
9
Harmonic and noise radiation
≤-60dB
1
0
Audio distortion
<0.30%
1
1
Frequency response
50HZ~15000HZ
1
2
Preemphasis delay
50us
1
3
1
3
Degree of separation
≥35dB
1
4
Input level
≤15dB
1
5
Modulation frequency deviation
±
75KHZ
1
6
SNR(Signal to Noise Ratio)
≥60dB
1
7
Machine Size
128*95*55mm
1
8
Machine weight
269g
 Common Troubleshooting
N
O
Undesirable
phenomena
Reason
1
Can not be
boot
1) outlet for power;
2) The power cord is plugged in;
3) the power adapter is normal.
2
Standing
wave is
greater
1) The antenna is not connected;
2) The antenna does not match;
3)antenna installation location next to the reflector too
3
Transmitter
distance is
close
1) feeder loss;
2) poor launch environment;
3) Output power is not adjusted;
4) antenna installation height is not high enough;
5) The antenna does not match;
6) receiver sensitivity
4
No power
output
1) Output power is not adjusted;
2) Machine standby or power.
5
Audio
muting
1) The master volume is not large;
2) the input audio signal is normal.
6
The
microphone
is silent
1) microphone is normal;
2) the microphone volume is not large;
3) whether the microphone dynamic microphone;
4) microphone is plugged.
7
Sound
quality is
poor
1) microphone quality is not good;
2) Input audio sound quality is not good;
3) antenna installation method is not correct;
4) audio signal or machine volume is not adjusted.