MITS Janus Time Engine
Page 31 of 39
Copyright© Instrumentation Technology Systems 2020
20200929
Group
Command
String
Variable values
Notes
^YTZ?
Queries current value
Return =(19h)TZ(32h)SHH:MM<CR>
as ASCII
Where S=+ or -
HH = 0-12, MM=00,15,30, or 45
Time
Setting
Manually Set
time
^T (14Hex)
yydddhhmmss<CR
>
Where
yy is last two digits of the year
(00-99)
ddd is day of the Julian year
(001-365)
hh=hours of day (00-23)
mm= minutes of the hour
(00-59)
ss= seconds of the minute
(00-59
Time is set by the Time of Day (TOD)
clock at start up.
Any value set will be overridden when
synchronization is achieved with an
NTP, PTP, GPS, IRIG Bxx0-3 (not
year) or IRIG Bxx04-07 input clock.
When using the MJTE as a PTP Master
Clock, any use of the manually set time
(e.g. 1PPS) must set the time at UTC
and not local time.
Set time. Time is entered
from left to right,
punctuation characters are
jumped over, and error
checking is done on a
character by character
basis.
Invalid entries are not
accepted. If there is an
error in the entered value,
press the ESC key and try
again.
When the complete time is
entered correctly, press
ENTER. The time will be
set the moment that the
ENTER key is pressed.
TIME cannot be set
manually if currently
locked to GPS, PTP, NTP
or an IRIG input signal
except the year when
locked to an IRIG Bxx0 to
IRIG B003 input clock.
Time
Setting
Leap Second
Adjustment
^YTOAnn
Where:
1.
A is a constant
2.
nn is the current leap seconds
value of the range 0 to 99. The
value if 37 is in use as of
January 1, 2017.
This value is required
when operating the MJTE
as a PTP Master Clock and
it is being synchronized by
a 1PPS reference standard.
For more information
about leap seconds, see
3.5.4
Leap Second
Adjust
on page 21.
^YTO?
Queries the current value
Return = (19h)TO(32h)A:value<CR>
Value = 37 (factory default) or the
current leap seconds at the time of
shipment.
