MODEL: GME3F31
Specifications:The GME3F31 FM radio exciter meets the standards for monaural broadcasting, stereo broadcasting, Supplementary Program (SCA) broadcasting, and Radio Frequency Data (RDS) broadcasting specified in GB/T 4311-2000 Technical Specification for Meter Wave FM Broadcasting, and all indicators meet the requirements of GY/T 169-2001 Technical Requirements and Measurement Methods for Meter Wave FM Broadcasting Transmitters.
Standard: FM
Frequency: 87MHz~108MHz wideband
Outputpower:≥30w
Product introduction:This FM Modulator(Exciter) has a simple structure, excellent performance, stable operation, easy maintenance, and the following outstanding features:
1) The motherboard adopts a brand new direct RF output architecture with excellent performance, simple and fast frequency hopping, and good frequency consistency throughout the entire FM frequency band.
2) The exciter adopts a brand new full broadband loop scheme, which has precise power detection (power detection error ± 10%, typical value ± 5%) and loop control function throughout the entire frequency band.
Overview
1) The maximum output power of the exciter is 30W;
2) Supports the following FM radio operating modes:
a) Single tone broadcasting;
b) Stereo broadcasting;
c) 3D vocal cord additional program playback;
d) FM data broadcasting.
3) Supports a working frequency range of 87MHz~108MHz;
4) Support FM synchronous network function;
5) Support manual and automatic switching between internal reference clock and external 10M reference clock;
6) Support analog L/R input, 2-channel AES/EBU input, manual and automatic switching;
7) Support AES/EBU monitoring output;
8) Supports SCA/RDS input and 19kHz pilot output;
9) Supports three power control modes: manual, small loop, and large loop;
10) The monitoring, alarm, and automatic protection functions are as follows: AES/EBU input: interrupt; Reference clock: Fault, turn off RF; Overheating temperature: turn off RF; Overload or other abnormalities during the operation of the small loop: power reduction; Overload, exceeding the manually set threshold, or other abnormalities occurring during the operation of the large loop: power reduction
11) Supports front panel touch screen control and RS232/485 control;
12) Support automatic/manual switching between the main excitation machine and the backup excitation machine.
Dimensions | 482.6mm(L)*480mm(W)*88.2mm(H)(2U) |
Weight | 8.5kg |
Ambient Temperature | 0℃~45℃ |
Relative Humidity | ≤95% |
Atmospheric Pressure | 86kPa~106kPa |
General indicators | |
Output power | 0~30W |
Frequency | 87~108MHz,1Hz步进 |
Frequency Accurate | ±1Hz |
Frequency stability | 10-6(Internal reference) 10–10(external reference) |
Residual radiation | <-65dB |
Parasitic AM noise | <-60dB |
Pilot frequency deviation | ±0.05Hz |
38kHz residual component in S signal | <-60dB |
Modulation frequency offset | 0~100kHz;(Max 150kHz) |
Pre-emphasis | 0 50us 75us |
Monophonic Broadcasting | |
Signal-to-Noise Ratio | >80dB(RMS,50us加重去重,75kHz频偏) |
Frequency Response | ±0.05dB(无加重,无去重) ±0.1dB(50us加重,50us去重) |
Distort(THD+N) | <0.05% |
Stereo broadcasting | |
Signal-to-Noise Ratio | >80dB(RMS,50us aggravation, deduplication,75kHz频偏) |
Frequency Response | ±0.05dB(No aggravation, no deduplication) ±0.1dB(50us aggravation,50us deduplication) |
Distort(THD+N) | <0.05% |
Separation degree of left and right channels | >65dB |
Power Supply | 170~240V AC,50~60Hz |
RF Output | 50Ω,0~30W |
RF Monitor | 50Ω,<RF Output -30dBc |
L/R Audion Input | 600Ω Balance,Max 8dBu |
AES/EBU Input | 110Ω Balance |
SCA/RDS Input | 10kΩ Imbalance,Max 4Vpp |
E-mail:dygme@163.com
Add: No. 21 Shuiyuan West Road, Liandong U Valley Science and Technology Park, Miyun District, Beijing, China