Product Info

GLOBALSTAR PROPRIETARY AND CONFIDENTIAL INFORMATION

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document.

06/18/20 Subject to Change without Notice P a g e | 27

Response: AA 05 00 D9 C4

The example above commands the ST100 Board to send 9 bytes of user defined data over the Globalstar Simplex

network. If the ST100 Board receives a properly formatted Send Data command, it returns an acknowledge response as

shown above. If the command is not properly formatted, it will return the NAK response AA 05 FF A1 CB.

4.2.2.2 Query Electronic Serial Number (ESN) (0x01)

The Electronic Serial Number command requests the ST100 BOARD to respond with the units Electronic Serial Number

(ESN).

0x01

Leader

Len

Cmd

CRC1

CRC2

Command: AA 05 01 50 D5

Response:

Leader

Len

Cmd

ESN

CRC1

CRC2

Example Response: AA 09 01 00 23 18 60 86 7A

Where the ESN returned is 2300000.

4.2.2.3 Abort Transmission (0x03)

The Abort Transmission command requests the ST100 BOARD to abort the current message transmit sequence over the

Globalstar Simplex network. This command aborts a redundant burst transmission. It DOES NOT abort track mode.

0x03

Leader

Len

Cmd

CRC1

CRC2

Command: AA 05 03 42 F6

Response: AA 05 03 42 F6

4.2.2.4 Query Bursts Remaining (0x04)

The Query Bursts Remaining command requests the ST100 BOARD to return the current number of bursts remaining the

current message transmit sequence over the Globalstar Simplex network.