dB PM 1000 User Manual
                                                                                                     | |
Contents
| 
DB ELETTRONICA TELECOMUNICAZIONI S.p.A.PM 1000 – 1 kW FM Broadcasting Transmitter - U SER ’ S M ANUAL 20 /1013.4 GENERAL BLOCK DIAGRAM DESCRIPTIONThe general block diagram (see Fig.3.1) consists of the following blocks:A) PM1000 RF Amplifier Stage delivers the 1050W output power.It is realised by means of the following modules:1) AMP30 (DB 0110_010A) preamplifiers/driver stage for delivering about 24 W RF power.2) Input splitter (DB 9701_001+DB 9702_007) that divide the 24 W in four equal parts to drivingthe four AMP300 final amplifiers.3) Four AMP300 300 W MOSFET technology amplifiers (DB 9812_001).4) Output coupler (DB 9702_008+9701_002A) for combining the four 300W stage outputs and toobtain the full output power.5) Output low-pass filter (DB 9901_001) and directional coupler (DB 9901_005) forspurious and harmonic filtering and for forward and reflected output power monitoring.B) Protection and control board (DB 9601-002) for monitoring and controlling all principaltransmitter parameters.C) PM 1000 Power Supply Stage. For driving the RF section there is a mains switching board,giving the correct power supply (45V) for each 300W RF amplifiers. An other switching module(DB 0206_090) is dedicated for protection and control board, meter stage, Modulator board,AMP30 Driver stage and all optional boards.D) PM1000 Meter stage display on a 40 LED scale all major transmitter parameters.E) SINTEL 96 modulation board allows a high quality direct carrier modulation accepting acomposite stereo (MPX) coming from Stereo encoder (/S option) or a mono input signal with up to3 SCA subcarriers (for example RDS, ARI, ...).F) Stereo encoder board (/S option) generates a composite MPX signal for the modulation boardfrom R and L audio channel.G) Stereo audio processor (/P option) performs a high quality sound compression.H) Remote control board (DB 9702-006). |
Related manuals for dB PM 1000
This manual is suitable for:
manualsdatabase
Your AI-powered manual search engine