| Customization: | Available |
|---|---|
| Type: | CATV Equipment |
| Function: | Signal Transmitting Device |
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DAYTAI FM Stereo Broadcast Transmitter,(DT-FM-SBT-92xx) are newest generation of FM stereo Broadcast Transmitter with
low and medium power. It adopts advanced third generation of FM modulation technologies: digital signal processing (FPGA)
and digital frequency synthesis technology (DAC). DT-FM-SBT-92xx series transmitters take use of the advantage of audio
processing technology to provide users a CD quality hearing experience with high linear and high gain LDMOS tube amplifier module.
★Features
⊙Full digital front panel control, easy operation
⊙24-hour working unmanned, user friendly design
⊙Support fault self-diagnosis and self-protection
⊙Adjustable output power as needed (10W~10kW)
⊙Air-cooled system with low consumption and low noise
⊙Equipped with multiple lightning protection measures
⊙LED on the front panel supporting alarm and signal monitor
⊙Adopt high gain and high linear LDMOS tube amplifier module design
⊙Multi lightning protection measures, good protection for whole equipment
⊙Adopt international advanced signal processing technology (FPGA) for audio encoding
⊙Two Transmitters can be connected simultaneously by Coaxial switch, and one for back up
⊙Fully complying with national standard (GB/T4311-2000) and industrial standard (GY/T169-2001)
⊙Support AGC function with sustained power output (±0.1dB) to ensure the transmitter a good stability and reliability
⊙Low power consumption and super linear design to improve the transmission power, and reduce the nonlinear distortion
⊙High-efficiency power supply with wide range of voltage (AC100~264V), suitable for different working condition
|
S/No. |
Item |
Unit |
Technical Index |
Remark |
||
|
1 |
Output Power |
W |
500 |
|||
|
2 |
Frequency |
MHz |
1kW≤ |
65.5~87; 87~108 |
||
|
1kW> |
87~108 |
|||||
|
3 |
Frequency deviation |
Hz |
≤500 |
|||
|
4 |
Sparious Radiation |
dB |
≤-70 |
|||
|
5 |
parasitic amplitude modulation noise |
dB |
-60 |
|||
|
6 |
Pilot frequency deviation |
Hz |
±1 |
|||
|
7 |
S signal 38kHz Residual component |
dB |
<-40 |
|||
|
8 |
Deviation (100% modulation) |
kHz |
±75 |
|||
|
9 |
pre-emphasis |
µs |
50 |
|||
|
10 |
Distortion (100% modulation) |
L |
% |
<0.2 |
||
|
R |
||||||
|
11 |
Frequency response (without emphasis, de-emphasis) |
L |
dB |
±0.2 |
||
|
R |
||||||
|
12 |
Frequency response (with emphasis, de-emphasis) |
L |
dB |
±0.2 |
||
|
R |
||||||
|
13 |
SNR (100% modulation) |
L |
dB |
≥75 |
||
|
R |
||||||
|
14 |
L/R Separation |
L R |
dB |
>70 |
||
|
R L |
||||||
|
15 |
L/R level diffrence |
dB |
<0.1 |
|||
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