Arbiter Systems 1084A, Operation Manuals

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68 Serial Communication and Command Set
Broadcast Mode – YEAR plus ASCII
Command: B8, O8
B8 configures the clock to broadcast from the main RS-232C port, the year and time-of-day as
ASCII data appended with a time quality indicator. O8 configures the clock to broadcast from the
option RS-232C port. YEAR plus ASCII is the same as ASCII plus Time Quality Indicator adding
the four digit year to the beginning of the string.
Response: < soh > yyyy:ddd:hh:mm:ssQ
C
Format: soh = Hex 01 – the start bit of the soh character is transmitted on time.
Q = Time quality indicator. may be represented by:
= (a space, ASCII 32) locked, maximum accuracy
. = (ASCII 46) Error < 1 microsecond
* = (ASCII 42) Error < 10 microseconds
# = (ASCII 35) Error < 100 microseconds
? = (ASCII 63) Error > 100 microseconds
Broadcast Mode - NMEA183GLL
Command: 0,nB
0,nB configures the clock to broadcast the National Marine Electronics Association Standard
(NMEA - 0183) to broadcast from the main RS-232C port, where n = the update rate in sec-
onds, from 1 to 9999.
GLL - Geographic Position, Latitude-Longitude
Latitude and Longitude of present vessel position, time of position fix and status.
Response: $–GLL,llll.llll,a,yyyyy.yyyy,a,hhmmss.sss,A*cs
C
Where: GLL = Geographic Position, Latitude / Longitude
llll.llll = Latitude of position
a = N or S
yyyyy.yyyy = Longitude of position
a = E or W
hhmmss.sss = UTC
A = status: A = valid data
*cs = checksum