Chapter 3 OEM7 Receiver Operation
CPT7 and CPT7700 Installation and Operation User Manual v12
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Figure 16: Transfer COARSE Time from Fine Clock to Cold Clock Receiver
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
FINE Time from Fine Clock to Cold Clock Receiver
on the next page. Configure both ports to the same
baud rate and handshaking configurations.
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
