User's Manual

Réf. :
Mémo :
Date : 21/08/02
- 7 -
Siemens Transportation Systems exclusive property
3.4.1.4. Configuration of the messages – permanent Tx mode
The messages which are emitted are a sequence of 0101…..01.
3.4.1.5. Configuration of the spread sequence
There are four spread sequences :
§ Sequence 0 (boot frame sequence) :
1100-1110-0111-1011-0011-1011-0110-0100-1100-0101-1111-1011-1010-0011-0101-0000-0100-
0001-0101-0110-1100-1101-0100-0000-0100-1100-1000-1110-0001-1110-0011-111
§ Sequence 1 :
1100-0111-0110-1011-1110-1100-0110-1101-1111-1000-1110-0100-0111-0000-1000-0100-1011-
1101-1001-1010-0011-0100-1011-0110-1010-1010-0000-1110-0100-0011-0100-010
§ Sequence 2 :
1101-1000-0010-1100-0111-1010-1110-0010-1001-1010-0101-1101-0011-1110-1100-0001-1100-
1011-0111-0100-1001-0000-1101-0001-0000-0100-0111-1101-1011-1001-0011-110
§ Sequence 3 :
1001-0001-0001-1100-0100-1110-1111-0111-0100-1010-1111-1111-0100-1000-1100-1010-0000-
1110-1111-0001-0010-1001-0110-1001-0010-0111-1100-1000-1000-0111-1110-001
The sequence used in permanent Tx mode (both 4.125ms/4.125ms and 5s/5s) is the
sequence 0 (boot frame sequence).
3.4.2. RF Switch
The MRAD has two RF outputs RFA1 and RFA2 that may be selected thanks to this RF
switch.
3.4.3. Power levels
The available power levels are :
• P0 : 27.5 dBm,
•
P1: 17.5 dBm,
• or P2 : 7.5 dBm
The P1 and P2 power levels will be redefined according to the results of the tests and to
the antenna configurations.
3.4.4. Frequencies
The available frequencies channels are : 2408 MHz, 2416 MHz, 2424 MHz, 2432 MHz,
2440 MHz, 2448 MHz, 2456 MHz, 2464 MHz, 2474 MHz.