[Git][NTPsec/ntpsec][master] 2 commits: NIST formatting conformance, small typos.
Matt Selsky
gitlab at mg.gitlab.com
Sat Oct 20 02:49:24 UTC 2018
Matt Selsky pushed to branch master at NTPsec / ntpsec
Commits:
fa325d2d by Paul Theodoropoulos at 2018-10-20T02:45:46Z
NIST formatting conformance, small typos.
- - - - -
10734100 by Paul Theodoropoulos at 2018-10-20T02:45:46Z
Remove sentence fragment that seems disconnected from rest of paragraph.
- - - - -
1 changed file:
- docs/driver_oncore.txt
Changes:
=====================================
docs/driver_oncore.txt
=====================================
@@ -6,7 +6,7 @@ include::html.include[]
["verse",subs="normal"]
Name: oncore
Reference ID: GPS
-Serial Port: /dev/oncore.serial._u_; 9600bps 8N1.
+Serial Port: /dev/oncore.serial._u_; 9600 bps 8N1.
PPS Port: /dev/oncore.pps._u_
== Deprecation warning ==
@@ -43,19 +43,19 @@ interface kits are available from http://www.tapr.org[TAPR].
The driver requires a standard +PPS+ interface for the pulse-per-second
output from the receiver. The serial data stream alone does not provide
-precision time stamps (0-50msec variance, according to the manual),
-whereas the PPS output is precise down to 50 nsec (1 sigma) for the
-VP/UT models and 25 nsec for the M12 Timing. If you do not have the PPS
+precision time stamps (0-50 ms variance, according to the manual),
+whereas the PPS output is precise down to 50 ns (1 sigma) for the
+VP/UT models and 25 ns for the M12 Timing. If you do not have the PPS
signal available, then you should probably be using the NMEA driver
-rather than the Oncore driver. Most of these are available on-line
+rather than the Oncore driver.
The driver will use the "position hold" mode with user provided
-coordinates, the receivers built-in site-survey, or a similar algorithm
+coordinates, the receiver's built-in site-survey, or a similar algorithm
implemented in this driver to determine the antenna position.
== Monitor Data ==
-The driver always puts a lot of useful information on the clockstats
+The driver always puts a lot of useful information in the clockstats
file, and when run with debugging can be quite chatty on stdout. When
first starting to use the driver you should definitely review the
information written to the clockstats file to verify that the driver is
@@ -138,7 +138,7 @@ Even the newest of these variants, the M12+T with firmware dated 9 Jun
Performance is really good, other than the rollover issue. With the
VP/UT+, the generated PPS pulse is referenced to UTC(GPS) with better
-than 50 nsec (1 sigma) accuracy. The limiting factor will be the
+than 50 ns (1 sigma) accuracy. The limiting factor will be the
timebase of the computer and the precision with which you can
timestamp the rising flank of the PPS signal. Using FreeBSD, a FPGA
based Timecounter/PPS interface, and an ovenized quartz oscillator,
View it on GitLab: https://gitlab.com/NTPsec/ntpsec/compare/78817b731b5a8082e98c4508f8fe8031383ce437...10734100e67867133272d42a0545a119e2693d3a
--
View it on GitLab: https://gitlab.com/NTPsec/ntpsec/compare/78817b731b5a8082e98c4508f8fe8031383ce437...10734100e67867133272d42a0545a119e2693d3a
You're receiving this email because of your account on gitlab.com.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ntpsec.org/pipermail/vc/attachments/20181020/d97c2eaf/attachment-0001.html>
More information about the vc
mailing list