[Git][NTPsec/ntpsec][master] 2 commits: Documentation polishing.

[Eric S. Raymond]

Eric S. Raymond pushed to branch master at NTPsec / ntpsec


Commits:
ca1fb4b8 by Eric S. Raymond at 2017-09-16T14:18:04Z
Documentation polishing.

- - - - -
6b4e3ccd by Eric S. Raymond at 2017-09-16T14:52:46Z
Documentation polishing.

- - - - -


1 changed file:

- docs/driver_hpgps.txt


Changes:

=====================================
docs/driver_hpgps.txt
=====================================
--- a/docs/driver_hpgps.txt
+++ b/docs/driver_hpgps.txt
@@ -8,11 +8,19 @@ Reference ID: GPS
 Driver ID: GPS_HP
 Serial Port: /dev/hpgps__u__; 9600bps 8N1, 19200bps 7N2 for the HP Z3801A
 
+== Warning ==
+
+As of September 2017 we have reports that the internal clock on a
+Z3801A has been recently observed to roll over around to 1998 (see
+link:rollover.html[Rollover issues in time sources]). Users should
+audit for rollover before deplying any of these devices.
+
 == Description ==
 
 This driver supports the HP 58503A Time and Frequency Reference Receiver
 and HP Z3801A GPS Receiver. It will probably work with other Z38xx models.
-Two-unit pairs of these are sometimes known as a KS-24361.
+Two-unit pairs of these are sometimes known as a KS-24361. All of
+these product are well past end of life.
 
 These receivers are very old designs, dating from around 1990, so
 their GPS receiver stages are not very sensitive by modern



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