User's Manual Part 1

Operation Chapter 4
OEMV Family Installation and Operation User Manual Rev 5B 73
The phase of the Warm Clock receiver clock is adjusted by the fractional measurement of the Fine
Clock receiver’s 1PPS mark input event. In other words, it synchronizes the Warm Clock receiver’s
1PPS to the incoming 1PPS of the Fine Clock receiver. It does NOT adjust the 1 second Time of Week
(TOW) counter or the receiver's Week Number. This procedure is used to make small corrections to
the Warm Clock receiver’s clock.
Figure 21: 1PPS Alignment
1PPS IN
(1 ms)
TIME
S
YN
C
log,
transmit time
dependant
on baud rate
RS232
TTL
Fine Clock
Receiver
Connected to
COM Input
On Warm
Clock Receiver
1PPS on
Fine Clock
Receiver
Connected
to MK1I on
Warm Clock
Receiver
The next
TIMESYNC
log is
triggered
by the
next PPS
10 ms