Technical information

Format of the SYSPLEX-1 Time String

The SYSPLEX1 time string is a sequence of 16 ASCII characters starting with the

SOH (Start of Header) ASCII controll character character and ending with the LF

(line feed, ASCII Code 0Ah) character. The format is:

The letters printed in italics are replaced by ASCII numbers whereas the other

characters are part of the time string. The groups of characters as defined below:

<SOH> Start of Header (ASCII control character)

sending with one bit accuracy at change of second

ddd day of year (001..366)

hh:mm:ss the current time:

hh hours (00..23)

mm minutes (00..59)

ss seconds (00..59, or 60 while leap second)

q Quality indicator (space) Time Sync (GPS lock)

(?) no Time Sync (GPS fail)

<CR> Carriage-return (ASCII code 0Dh)

<LF> Line-feed (ASCII code 0Ah)

139