1 PPS input for USRP2

GNU Radio
1

Eric, Matt,

I have another questions on this. Is the timestamp
need to refer to (t=0 to) the 1PPS-pulse only?

I hope to use faster sync pulse like at 1-10kHz,
and get timestamp referred to them. Is this possible?

Regards,

Mamoru Y.
Research Institute for Sustainable Humanosphere (RISH)
Kyoto University
[email protected]

Samples can be time stamped, and that time can be calibrated to
the 1 PPS

signal. In the most general case, that 1 PPS input just goes
directly to

2

Mamoru Y. wrote:

Eric, Matt,

I have another questions on this. Is the timestamp
need to refer to (t=0 to) the 1PPS-pulse only?

I hope to use faster sync pulse like at 1-10kHz,
and get timestamp referred to them. Is this possible?

The 1 PPS input goes to an FPGA pin, so you can program the FPGA to do
whatever you want, including accept faster sync pulses.

Matt

3

Might I suggest something like this?

http://www.rt66.com/~shera/index_fs.htm
http://www.rt66.com/~shera/QST_GPS.pdf

–Daniel H.