User Manual
Table Of Contents
- Strata Transmitter
- Operations Guide
- Theory of Operation
- Command and Control Power Supply
- MPEG/COFDM Encoder/Modulator
- FMT
- TCU
- TXU
- HPU
- TCU/TXU Front Panel Control Settings
- Notes:
- In the case of digital audio connections, note that the GND (ground) connection is common to two audio circuits as opposed to the connections used for standard analog audio circuits. In the case of digital audio circuits then, a single XLR connector sup
- Strata TX Digital and Analog Audio Options
- Strata Power Cables
- MRC 907386-1 COFDM/MPEG Encoder PWB Layout
Strata Operations Guide
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2 -
Introduction
The Microwave Radio Communications (MRC) Strata system provides a reliable and highly flexible
video microwave transport system. This operations guide provides basic system operations information
and details for hands-on operation of this equipment.
System Description
Figure 1 below shows the overall Strata system architecture for a fully equipped system.
TCU TXU HPU
!
NTSC
!
PAL
!
SDI
!
ASI
!
IF
RF OUT
RF/DC
Telemetry Telemetry
IF or Baseband Signal
DC Simplex Powering
IN
Dummy Load
12 v to 48 v
DC
RS-232
1.84 MHz OOK Tone
12 v to 48 v
DC
RS-232
Figure 1 – Strata Transmitter System Architecture
The primary system features are:
o Lightweight, Modular, Multi-Unit Design
o Analog, Digital, or Analog/Digital Switchable
o MPEG Encoding (4:2:0, 4:2:2)
o COFDM Modulation with Selectable Guard Interval
o Digital Modulation for QPSK, 16QAM, and 64QAM
o NTSC or PAL Modulation with Audio (4 mono or 2 stereo)
o Tripod, Half Rack, or Full Rack Mounts
o Front Panel Remote Controlled
o Bands from 2 to 15 GHz
o Wide Choice of Antennas
Note that the TCU (Transmitter Control Unit) and the TXU (Transmitter Unit) may be operated in a
stand-alone configuration depending on specific video transport applications.
TCU Description
The TCU component can accept a wide variety of signal formats and provide several different output
signal formats. Figure 2 below shows the basic functions of the TCU.