TrueTime 151-602 - Mode R - Reset to Default and Mode C; Mode T - Time on Request

X
X
L
L
D
D
C
C
M
M
A
A
N
N
.
.
d
d
o
o
c
c
3
3
-
-
1
1
9
9
R
R
E
E
V
V
E
E
Sample Entry: FDDD/HH:MM:SS.mmmQ<CR>
Response: <SOH>360/22:01:25.602*<CR><LF>
Sample Entry: FXXX hh,mm,ss XXXX<CR>
Response: <SOH> 22,01,25 <CR><LF>
Sample Entry: FDDDAXXT<CR>
Response: <SOH>360A:01:25.602*<CR><LF>
3-116.4 MODE R - RESET TO DEFAULT AND MODE C
Use Mode R to reset to the default format and return to Mode C. Send the command character R to the
Serial Port and the port will respond by outputting time in the default format once per second. Any
previous Mode F format is canceled.
The data and carriage return timing of the initial output string sent immediately following the command
character R is not reliable. This inconsistency is due to internal synchronization with the data rate.
3-116.5 MODE T - TIME ON REQUEST
Use Mode T to request a single output of time to the nearest millisecond. Send the command character
T to the Serial Port. The unit will save the time of year as of 9 bits after the center of the start bit of the
character T, then the port will immediately respond with a single time data string in the current format
selected. The Serial Port outputs no further data until it receives another command character. The
format of the Mode T string may be altered using Mode F. The default format is:
<SOH>DDD:HH:MM:SS.mmmQ<CR><LF>
where:
<SOH> = ASCII start-of-header character (HEX 01).
DDD = three-digit day of year.
: = ASCII colon character.
HH = two-digit hours.
MM = two-digit minutes.
SS = two-digit seconds.
. = ASCII period character.
mmm = three characters for milliseconds.
Q = time quality character as described below.
<CR> = ASCII carriage return character.
<LF> = ASCII line feed character.
The time quality character may be a:
SPACE which indicates a worst-case error less than threshold 1.
. which indicates a worst-case error greater than or equal to threshold 1.
* which indicates a worst-case error greater than or equal to threshold 2.
# which indicates a worst-case error greater than or equal to threshold 3.
? which indicates a worst-case error greater than or equal to threshold 4.