G = System Good
D = Failure of SecureSync internal diagnostics
T = SecureSync does not have correct time
‘l’ command
The loopback command will cause SecureSyncto echo the next character received back to
the caller. This may be used by a caller’s equipment to calculate the round trip delay across
the PSTN connection in order to apply a correction to the received time data.
Input format: l<CR>
Output format: (Next character received)
‘hu’ command
The hang up command will cause SecureSync to drop the line immediately and terminate
the call.
Input format: hu<CR>
5.4.14.4 Format BBC-04
This format is a string of ASCII characters and is sent once per second.
Number of characters: 18 (including CRLF)
E x a m p l e m e s s a g e :
T:ho:mi:sc:dw:da:mo:ye:lp:cs<CR><LF>
Where:
T Indicates the synchronous moment for the time
setting.
ho Hours (00-23)
mi Minutes (00-59)
sc Seconds (00-59)
dw Day of week (01=Monday to 7=Sunday)
SecureSync 2400 User Manual 541
APPENDIX
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