SOURce:SCENario:RLM
Function
This command supports the Galileo Return Link Acknowledgement Service by sending out a Return Link Message to a user in distress, thereby informing him that his distress signal has been detected and located. For more information, see RLS (Return Link Service).
The SCPI command is available in two variants:
Command Syntax
Short RLM message:
SOURce:SCENario:RLM 0,satID,int1,int2,int2,int4
Long RLM message
SOURce:SCENario:RLM 1,satID,int1,int2,int3,int4,int5,int6,int7,int8
Parameters
RLM [x]:
0 = short message; 1 = long message
satID
: The satellite chosen to transmit the message (PRN).
int1...0
: an unassigned decimal integer, representing 20 bits of RLM (SAR) data transmitted within the INAV page, as illustrated below:
For additional information, see the Galileo Open Service Signal in Space Interface Control Document.
Examples
- SOURce:SCENario:RLM 0,satid,int1,int2,int3,int4
- Satid = Galileo satellite in view in running scenario
- Int1,int2,int3 – beacon id – 3x20bits converted to decimal
- 15 HEX ID -> 60 binary bits (3x20) -> each 20 bit binary converted to decimal
- Int 4 – 4 bit message ID, 16 bit parameter data
- SOURce:SCENario:RLM 0,satid,int1,int2,int3,int4
- Satid = Galileo satellite in view in running scenario
- Int1,int2,int3 – beacon id – 3 x 20bits converted to decimal
- 15 HEX ID -> 60 binary bits (3 x 20) -> each 20 bit binary converted to decimal
- Int 4 – 4 bit message ID, 16 bit parameter data
SOUR:SCEN:RLM 0,8,711888,141509,1025,65536
Decimal 65536 = Binary 00010000000000000000
4 bit message ID = 0001
- SOURce:SCENario:RLM 1,satid,int1,int2,int3,int4,int5,int6,int7,int8
- Satiid = Galileo satellite in view in running scneario
- Int1,int2,int3: Beacon ID – 3 x 20 bits convertd to decimal
- 15 HEX ID -> 60 binary bits (3 x 20) –> each 20 bit binary converted to decimal
- Int 4-8: 4bit message ID, 96 bit parameter data
SOUR:SCEN:RLM 1,8,711888,141509,1025,983040,1048575,1048575,1048575,1048575
Decimal 983040 = Binary 11110000000000000000
4 bit message ID = 1111