Transfer Fine Time From Fine Clock To Cold Clock Receiver - Novatel OEM6 Series User Manual

Chapter 4
Transfer FINE Time (<50 ns) from a Fine Clock to a Cold Clock GPS Receiver
1. Connect a COM, USB or Ethernet port from the fine clock receiver to the cold clock receiver
(for example, COM2 on the fine clock receiver to COM3 on the cold clock receiver), as shown
in Figure 20, Transfer FINE Time from Fine Clock to Cold Clock Receiver on Page 60.
Configure both ports to the same baud rate and handshaking configurations.
Figure 20: Transfer FINE Time from Fine Clock to Cold Clock Receiver
2. Issue the following command to the fine clock receiver:
log com2 timesyncb ontime 1
3. Connect the 1PPS signal of the fine clock receiver to the Mark 1 input (Event1) of the cold
clock receiver.
4. Issue the following command to the cold clock receiver:
adjust1pps markwithtime
When the cold clock receiver receives the 1PPS event from the fine clock receiver, it checks to see if a
valid TIMESYNC log has arrived within 200 ms of the last 1PPS event. If so, it sets the cold clock
receiver clock to the time of the fine clock receiver. See Figure 22, 1 PPS Alignment on Page 61.
60
Operation OEM6 Cards and Enclosure
Fine Clock
OEM6 Family Installation and Operation User Manual Rev 7
Cold Clock