23
AQM - Agile QAM Modulator
Interleaver
The Convolutional Interleaver is user selectable. Various choices
are available depending on the Operation Mode.The standard
settings are as follows:
ITU-A - I 12, J17
ITU-B - I 128, J1
Baud Rate
The Baud Rate needs to be programmed based on the Input Data
and QAM Mode used. The range is from 1 to 6.9 MBaud.
Input
The AQM Input Signal is fed to the module via the BNC connector
on the rear panel. ASI (Asynchronous Serial Interface) data is
typically used. The unit is also programmed with the ability to
generate a PRBS (Pseudo Random Binary Sequence) test signal.
The PRBS signal is a polynomial sequence that is determined by
the Input Selection choice. The following settings are available.
PRBS 25M
PRBS 23
PRBS 15M
PRBS 15
These selections are also valuable if an Input ASI signal is not
available. This can be helpful in balancing the Output Level of
several units without the need for an Input ASI signal.
Содержание AMM-806
Страница 86: ...79 TVCB PC Installation ...
Страница 93: ...86 SMI Installation Torque Patterns 1 Start Here 2 3 4 5 6 1 Start Here 2 3 4 4 PORT 8 PORT ...
Страница 125: ...118 Fiber Optics Fiber Loss vs Path Length Single Mode 1550 nm ...
Страница 156: ...149 Cable TV Channel Format NTSC NTSC Composite Video Waveform ...
Страница 157: ...150 US Frequency Spectrum ...
Страница 158: ...151 FCC Aeronautical Band Frequencies Used for Communication and Navigation ...
Страница 171: ...164 F C x 32 Temperature Conversion Nomograph C F FAHRENHEIT F CELSIUS C 9 5 C F 32 5 9 KELVIN K K C 273 ...
Страница 175: ...168 Common CATV Symbols ...
Страница 176: ...169 Common CATV Symbols ...
Страница 177: ...170 Digital L Band Distribution Symbols ...
Страница 178: ...171 Digital L Band Distribution Symbols ...
Страница 183: ...176 Typical Cable Attenuation Chart in dB 100 Feet 68 F 20 C ...
Страница 187: ...180 Echo Rating Graph ...
Страница 188: ...181 Signal to Interference Limits Non Coherent Carriers ...
Страница 190: ...183 Heterodyne Modulator Analog ...
Страница 191: ...184 Heterodyne Processor Analog ...
Страница 213: ...206 Multiplexers ...
Страница 215: ...208 Antenna Stacking Methods to Increase Received Signal Level NOTE Refer to Antenna Spacing Chart for dimensions ...
Страница 216: ...209 Antenna Spacing Mounting Channelized Antennas on the Same Mast NOTE Refer to Antenna Spacing Chart for dimensions ...
Страница 285: ...Rev 8 0 ...