B.9 Power System Time, Frequency and Phase Monitor
135
Response:
h
<
CR
><
LF
>
Where for h: 0 = System OK
1 = No System Reference
2 = System okay now but reference lost since last request
Start Broadcast Mode: Vorne
Command:
B2
B2 configures COM1 to broadcast data to support Vorne large format time displays. Data is transmitted
ahead of time, and the
<
BEL
>
character is transmitted on time. When properly configured, the Vorne
display updates simultaneously upon receipt of the
<
BEL
>
character. Refer to Arbiter Systems Application
Note 103 for more information.
Response:
11nn
<
CR
><
LF
>
Out-Of-Lock Time
1/second
44hhmmss
<
CR
><
LF
>
UTC/Local Time
22
±
ff.fff
<
CR
><
LF
>
Frequency Deviation
33
±
s.ss
<
CR
><
LF
>
Time Deviation*
34
±
sss.sss
<
CR
><
LF
>
Time Deviation*
66hhmmss
<
CR
><
LF
>
System Time
77nn.nnn
<
CR
><
LF
>
System Frequency
88nnn.nn
<
CR
><
LF
>
System Phase
89nnn.nn
<
CR
><
LF
>
System Magnitude
55ddd
<
CR
><
LF
>
Day of Year
<
BEL
>
Hex 07
The decimal points shown above are not actually transmitted in the data stream, but their position is
implied. The displays are configured to show the decimal point in this position.
*Time Deviation is output in two formats in the same data stream: 33
±
s.ss and 34
±
sss.sss.
Output for the 33
±
s.ss format will be +9.bb when the measured value e9.99 (b = blank). It
will be -9.bb when the measured value is less than -9.99.
Output for the 34
±
sss.sss format will observe the following conventions for out-of-range values and
leading blanks. Decimal points are implicit and do not appear in the data stream.
Time Deviation Range
Format (b=blank)
Below -999.99
-bbb.bbb
-999.99 to -100.00
-sss.sss
-99.99 to -10.00
-bss.sss
-9.99 to -0.01
-bbs.sss
+0.00 to +9.99
+bbs.sss
+10.00 to +99.99
+bss.sss
+100.00 to +999.99
+sss.sss
Above +999.99
+bbb.bbb
Table B.4: B2 Broadcast, Time Deviation Values
Start Broadcast Mode: ASCII
Command:
B7, O7