User's Manual

2-26
BreezeACCESS 4.0 Operations and Administration
Manual Revision: 1.01
parameter (see below) must be configured in the AU. The
Enhanced Mode is not suitable for sequences with 6 or
less frequencies. If Enhanced Scrambling is selected with
sequences that have 6 or less frequencies, than
Standard Scrambling is used by default.
The scrambled sequence is generated according to the
following rules:
a.The first channel in the basic scrambled sequence is
frequency 1 (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.)
b.The index of each of the other channels is calculated
by adding the Spanning Factor to the index of the
previous channel. Note that the sequence is cyclic,
meaning that adding 1 to the highest index in the
sequence (Index=N where N is the number of channels in
the sequence) will result in the first channel (Index=1).
The scrambled basic sequence can also be calculated
using the following formula:
P
x
(j)= {[(j-1)*X]mod(N)}+1
Where:
X is the Spanning Factor
N is the number of channels in the sequence (modulus)
J is the sequence index
Example: N=8, X=3
P
1
(5)={[(1-1)*3}mod8}+1=1
P
2
(5)={[(2-1)*3}mod8}+1=6
P
3
(5)={[(3-1)*3}mod8}+1=3
P
4
(5)={[(4-1)*3}mod8}+1=8
P
5
(5)={[(5-1)*3}mod8}+1=5
P
6
(5)={[(6-1)*3}mod8}+1=2
P
7
(5)={[(7-1)*3}mod8}+1=7
P
8
(5)={[(8-1)*3}mod8}+1=4
And the basic scrambled sequence is:
1, 4, 7, 2, 5, 8, 3, 6.
# Manual Sequence Definition – Manually defines the
hopping sequence, using numbered channel indexes (from
1 to “Number of Hopping Frequencies”). The sequence
length must be equal to “Number of Hopping Frequencies”
(all the defined frequencies must be used).
# Erase Manual Sequence – Erases the manually defined
hopping sequence.