Features
User Manual for AZ110 Broadcast Satellite Modulator with ASI interface
version 3.2
83
SHAPING THE FUTURE SATELLITE OF COMMUNICATIONS
8.2.3.1
BISS Mode 1
This mode has been specifically designed for DSNG applications, fly-away
operations, emergency situations, etc. It can also be used as a fall-back solution
while using the complete BISS-E system. In Mode 1, a fixed 12-character session
word is inserted in the scrambler. The 64-bit control word is derived from the
session word according to the DVB-CSA specification.
Manual entry of the session word shall be in hexadecimal notation, with the digits
entered most-significant-nibble first, i.e. from left to right as viewed in hexadecimal
notation.
For example, 0xA13DBC42908F would be entered in the following sequence:
A,1,3,D,B,C,4,2,9,0,8,F.
The
Transport_Scrambling_Control
bits of the Transport Packets shall be set to
“10”.
8.2.3.2
BISS Mode E
Clear Session Word
The Newtec Scrambler is compliant with BISS Mode 1. It supports the insertion of a
12-character clear session word through the front panel and through a remote
control interface (RMCP or SNMP).
The clear sesson word, entered via the user interface or remote control port, is
readable through any unit interface.
Encrypted Session Word
The unit supports the insertion of encryption session words through the front panel
and through the remote control interface.
The encryption session word is a 16-character number that is transformed by the
unit into a 12-character clear SW. The clear session word is then used by the unit
to decrypt the broadcast according to paragraph 8.2.3.1
(BISS Mode 1).
Once the encrypted session word has been entered via the front panel or via the
remote control interface, it is impossible to read it back through any unit interface.
The manual entry of the encrypted session word is in hexadecimal form; the 16
digits are entered with the most-significant nibble first (i.e. the left-most nibble).
For example, if the encrypted session word is 0xF76EE249BE01A286, it shall be
entered in the following sequence:
F,7,6,E,E,2,4,9,B,E,0,1,A,2,8 and 6.
