Analog STL โดย OMB


The MT/MR PLATINUM FM STL (Studio-to-Transmitter Link), is one of the latest OMB products. It is made up of a 20W (200~960MHz) transmitter externally synthesized in 20MHz sub-bands with a step of 25KHz (optionally 10kHz), microprocessor controlled, LCD display for the visualization of the most relevant transmission parameters (frequency, forward and reflected power, modulation level, pilot signal), balanced Mono, Stereo (MPX) and 3 SCA inputs and SWR fold back protection.


Frequency range                                                                                                                                   From 200 to 960MHz in sub-ranges of 20MHz Modulation
FM, 75kHz peak deviation

Modulation                                                                                                                                               180k F3E mono
256k F3E stereo

Synthesis step                                                                                                                         10kHz                                                                                                                                                                                     15kHz ~ 67kHz +0.1/-0.5dB

Composite MPX output response                                                                                   
<-6dB @100kHz
<-20dB @125kHz                                                                                                                                          15kHz ~ 100kHz +0.1/-1.5dB

Monitor output wide-band response
-3dB typical @125kHz
-6dB typical @160kHz

Mono/Stereo decoded response                                                                                                         30Hz ~ 15kHz ±0.2dB

Signal/Noise ratio (30~20000Hz rms)
>70dB, typical 76 ( mono)
>66dB, typical 72 (stereo)

Modulation distortion (100% deviation) @ 1kHz
≤0.1%, typical 0.03% (mono)
≤0.3%, typical 0.2% (1 stereo channel)

Modulation distortion (100% deviation) @ 30~ 7500Hz
≤0.25%, typical 0.12% (mono)
≤0.3%, typical 0.2% (1 stereo channel)

Stereo cross-talk (typical)
> 50dB (400 ~ 10000Hz)
> 40dB (100 ~ 15000Hz)

Input/Output signals
Alarm, RF/LF disable, Low RF field, On the Air,
RS232 for monitoring and control

Power supply                                                                                                                                          100 ~ 240Vac, 47~63Hz

Operating temperature range             
0 ~ 35ºC recommended
-10 ~ 45ºC max.