SERTEL T-GPS-300, Operation Manual

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29 RS 232 OUTPUT FROM SERTEL SYSTEM ( BH 123 FORMAT)
The GPS/Master Clock should send an ASCII string of length 18 bytes with time of day /
date and control codes automatically in the format as described below :
CHAR
NO. MEANING
1 STX (Start of Text)
2 Status
3 Day
of week
4 Tens of hours
5 Unit of hours
6 Tens of minutes
7 Units of minutes
8 Tens of seconds
9 Units of seconds
10 Tens of days
11 Units of days
12 Tens of months
13 Units of months
14 Tens of years
15 Units of years
16 CR (Carriage return)
17 LF ( line feed)
18 ETX (End of text
Format of Day of Week field
B7 B6 B5 B4 B3 B2 B1 B0 Day
0 1 1 0 0 0 0 1 Monday
0 1 1 0 0 0 1 0 Tuesday
0 1 1 0 0 0 1 1 Wednesday
0 1 1 0 0 1 0 0 Thursday
0 1 1 0 0 1 0 1 Friday
0 1 1 0 0 1 1 0 Saturday
0 1 1 0 0 1 1 1 Sunday
Note
1.
The RS 232 C Output is on pin 3 with respect to pin 5 of the D-type male connector
a) Baud rate as applicable (9600)
b) Data length ,8 bits (8)
Parity nil
2.
The data string is transmitted once every minute