ZHC618F-30W/5G FM Transmitter (Exciter)1. OverviewZHC5G series
FM stereo broadcast transmitter (exciter) is an outstanding
software radio product; it is designed with high reliability
concept and has unparalleled performance indicators.This
transmitter uses a new large-scale field-programmable gate
array (FPGA) and direct digital frequency synthesis (DDS)
technology up to 5G, which has achieved the highest
technical specifications in the industry so far, it's
providing listeners with CD-like sound quality.The
transmitter consists of audio interface unit, digital
processing and FM modulation unit, radio frequency power amplifier
unit, human-machine interface unit, communication interface unit,
clock synchronization unit and power supply unit. The transmitter
is installed in one 19-inch 2U standard case, and all input and
output signals are led out from the rear panel.2. Technical
characteristics and principle block diagramProduct technology has
the following technical features:• Full process digital processing
to achieve a perfect auditory effect
of CD-like sound quality• Full-scale digital processing
with large-scale field-programmable gate array (FPGA)
technology• Direct digital frequency synthesis (DDS) technology at
speeds up to 5G to peak transmitter specifications• High
reliability microprocessor (ARM) technology as the primary
controller• Support for multiple audio source inputs (transmitters
can be automatically selected by
priority): Two AES/EBU digital audio signal inputs
(highest and second priority)One analog stereo analog audio signal
input (3rd priority)One MPX stereo composite signal input
(4th priority)One I2S digital audio signal input (lowest
priority)• Supports one RDS or SCA subcarrier
input• Support stereo pilot signal and stereo composite
signal 19KHz/MPX output• Upgradeable to
FM Synchronous broadcast transmitter• Electronically
controlled AGC controls output power zero drift• Perfect
over-current, over-voltage, over-temperature, over-power, standing
wave ratio alarm and protection• One-touch shuttle quick keyboard
input• Real-time display of operating parameters using OLED•
With TCP/IP, RS232, RS485, CAN communication interface
and SMS modem interface• 19-inch standard chassis, height
2UThe Transmitter Block Diagram: 3. Technical specifications1.
Nominal emission
frequency 87MHz~108MHz (other
frequencies can be customized), stepping 10kHz2. Carrier frequency
tolerance ±200Hz3.
Output
power 0~30W4.
Output power
stability
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