User's Manual

Menus and Parameters
2-25
BreezeACCESS 4.0 System Manual
The default sequence (including the case where all frequencies were
deleted) is the single lowest available frequency – 5725 MHz.
" Add Frequencies – Adds discrete hopping frequencies or
frequency ranges. Enter a list of frequencies and/or
frequency ranges to be added, e.g. 5725-5735, 5740, 5744.
Use a comma to separate between entries (no spaces). The
allowed entries are from 5725 to 5875 in steps of 1 MHz.
" Remove Frequencies - Removes frequencies from the
existing list. Enter a list of frequencies and/or frequency
ranges to be removed, using the same guidelines as in Add
Frequencies above. When a frequency range is removed, all
frequencies in the range that are included in the list of
frequencies to be used, are removed, including the
frequencies that define the range boundaries.
" Erase All – Erases all the entries from the list.
" Scrambling Definition – Defines the method of organizing
the selected frequencies to form the actual hopping sequence
to be used. Proper organization of the hopping sequence is
essential to guarantee minimal cross interference among
several collocated AUs that use the same sequence with
different Hopping Shift values.
# Scrambling Mode – Defines the scrambling mode. The
following options are available:
• Standard Scrambling – This mode is not recommended
for sequences with 7 or more channels. The scrambled
basic sequences for 3 to 6 frequencies when using
Standard Scrambling are:
Table 2-2: Basic Sequences using Standard Scrambling
Frequency 1 (index=1) is the lowest frequency in the list
of frequencies to be used, frequency 2 is the next
frequency and so on.
• Manual Scrambling – For customized definition of the
hopping sequence, using the Manual Sequence
Definition option (see below).
• Enhanced Scrambling – Automatically generates
hopping sequences using an enhanced algorithm. It is
recommended that Enhanced Scrambling rather then
Standard Scrambling be used. If the Enhanced
Scrambling Mode is selected, the Spanning Factor
N (number of channels) Scrambled Basic Sequence (channel indexes)
3 1, 3, 2
4 1, 3, 2, 4
5 1, 3, 5, 2, 4
6 1, 3, 5, 2, 6, 4