Thunderbolt GPS disciplined clock

Using Arduino Networking, Protocols, and Devices
#1

Hi. Has anyone decoded the out put from a Thunderbolt GPS disciplined clock.

I can capture the HEX code at 9600-8-N-1.
Here is 1 and a bit blocks.

10 8F AB 0 4 69 36 6 95
0 F 0 3A 11 8 19 4 7
DC 10 3 FF FF FF FF FF
10 8F AC 7 0 64 0 0 0
75 0 0 0 C0 0 0 0 0
3F 78 7 11 3C 2E BB 77 0
9 44 1 3F 4A 80 A0 41 D7
C8 43 3F ED 8D 22 5F 5D 7D
5C 3F 93 84 20 67 D5 D CC
40 59 D1 38 4B C 0 0 0
0 0 0 0 FF FF FF FF
10 8F AB 0 4 69 37 6 95
0 F 0 3B 11 8 19 4 7
DC 10 3 FF FF FF FF FF
10 8F AC 7 0 64 0 0 0
75 0 0 0 C0 0 0 0 0
3F 43 C3 50 3C 88 F6 6F 0
9 44 1 3F 4A 80 A0 41 D7
CA 4 3F ED 8D 22 5F 5D 7D
5C 3F 93 84 20 67 D5 D CC
40 59 D1 38 4B C 0 0 0
0 0 0 0 0 FF FF FF FF

10 8F AB 0 4 69 38 6 95
0 F 0 0 12 8 19 4 7
DC 10 3 FF FF FF FF FF
10 8F AC 7 0 64 0 0 0
75 0 0 0 C0 0 0 0 0

That is as far as I got.
I would like to display the Timing Outputs (errors) and the date-time on to a LCD display to save running a PC and the Monitor program.

Thanks for any help David.

#2

Look at appendix A. It shows that your packet breaks are incorrect.

10 8F AB 0 4 69 36 6 95 0 F 0 3A 11 8 19 4 7 DC 10 3 FF FF FF FF FF

is the first type of packet.

10 8F AC 7 0 64 0 0 0 75 0 0 0 C0 0 0 0 0 3F 78 7 11 3C 2E BB 77 0 9 44 1 3F 4A 80 A0 41 D7 C8 43 3F ED 8D 22 5F 5D 7D 5C 3F 93 84 20 67 D5 D CC 40 59 D1 38 4B C 0 0 0 0 0 0 0 FF FF FF FF

is the second type of packet.

Section A.9 provides details for understanding each packet type. A.10.30 describes the first packet. A.10.31 describes the second packet.

#3

Paul. Thanks for that. Looks like I need to do a lot of reading.

I think I will try some other thinks before I do anymore to this.

Just one(2) things am I right I think each packet start with "10 F8"? If so is this how it should be split.?

Packet 1 10 8F AB 0 4 69 36 6 95 0 F 0 3A 11 8 19 4 7 DC 10 3 FF FF FF FF FF Packet 2 10 8F AC 7 0 64 0 0 0 75 0 0 0 C0 0 0 0 0 3F 78 7 11 3C 2E BB 77 0 9 44 1 3F 4A 80 A0 41 D7 C8 43 3F ED 8D 22 5F 5D 7D 5C 3F 93 84 20 67 D5 D CC 40 59 D1 38 4B C 0 0 0 0 0 0 0 FF FF FF FF Packet 3 10 8F AB 0 4 69 37 6 95 0 F 0 3B 11 8 19 4 7 DC 10 3 FF FF FF FF FF Packet 4 10 8F AC 7 0 64 0 0 0 75 0 0 0 C0 0 0 0 0 3F 43 C3 50 3C 88 F6 6F 0 9 44 1 3F 4A 80 A0 41 D7 CA 4 3F ED 8D 22 5F 5D 7D 5C 3F 93 84 20 67 D5 D CC 40 59 D1 38 4B C 0 0 0 0 0 0 0 0 FF FF FF FF Packet 5 10 8F AB 0 4 69 38 6 95 0 F 0 0 12 8 19 4 7 DC 10 3 FF FF FF FF FF Packet 6 10 8F AC 7 0 64 0 0 0 75 0 0 0 C0 0 0 0 0

Thanks agn David.

#4

The 10 is the start of packet marker. The 8F AB or 8F AC is the packet type.

#5

Thanks Paul. That was a great help I will go and do a lot of reading. Looks like I need 8F AC Bytes 20-23 (GPS offset (ppb)).

David.

#6