VooDoo DCR 6000, Planning & Installation Manual

Page: 34 / 149

1. General DCR 6024/6128/6000
1 – 25 Planning and Installation – Rev. 1 / 7. 2001
The scanner power supply board BY 5112 contains the following functions:
1. Two switch mode power supplies (+5V and –12V/–7V) for the scanner record-
and play-back amplifiers.
2. Thermal protection of record amplifiers by detecting the headwheel rotation.
If the rotation speed of the headwheel goes down, the record mode is cut off.
This prevents thermal damages of the record amplifiers.
3. Erase oscillator (30 MHz) for the flying erase heads.
4. Head switch logic realized by a FPGA.
The FPGA generates all the timing signals for the record and play process in
the RF- path as well as EE information for the Processor in simulation mode.
5. Processing of waveform monitoring signals.
iMCS
The control system of the recorder DCR 6024 is conceived as a multi Processor
system.The main components of the control system are connected via the serial
iMCS bus system with each other ( iMCS = internal machine communication sys-
tem). This bus is based on standard IEEE 802.3 (ETHERNET). Because of the
cable deviating from the ETHERNET-Standard, the bus system is confessed also
under name CHEAPERNET. The maximal cable length is specified with 185m.
The participants in the iMCS system are:
Tapedeck / System Control Unit BY 5160
Control Panel DCH 6024 CP
DTV Processor / System Control Unit SYSC
Data processor / System Control Unit DPCU
Up to four DCR 6024 can be controlled within one iMCS net. Individual recorder
station addresses can be set up by local address switches, see chapter 5.3
”Startup”.
The system control board BY 5160 is divided into two sections, BY 5161 and
BY 5162.
The overall function can be separated into seven main groups:
Central Control Unit CCU
Gateway (Serial I/O Unit) GW
Timecode Unit TCU
Motor Control Unit MCU
Digital Motor Control DMC
Clock Generator
RF & Sensor Evaluation
Scanner Power
supply
Control System