![]() ![]() ![]() Output format: (Next character received) ‘hu’ command ![]() 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. The loopback command will cause SecureSyncto echo the next character received back to the caller. T = SecureSync does not have correct time.D = Failure of SecureSync internal diagnostics.SecureSync transmits the status information on request. Number of output characters: 7 (including CR) ‘s’ command SecureSync transmits the date on request. The data transmitted by SecureSync is timed so that the stop bit of each ends at the start of the next second. ‘t’ commandĮach HHMMSS filed refers to the time at the start of the next second. Time information is available in UTC format or UK TOD format. For example, at 300 baud, 8 data bits, 1 stop bit, and no parity, each byte takes 10/300 s=33 ms, so the byte should be advanced by 33 ms in order for the ’s stop bit to line up with the start of the next second. The message should be advanced by an appropriate number such that the stop bit of each occurs at the start of the next second. The third format is a string ASCII characters and is sent on a received character. Sum of all bytes up to and including the checksum (sum includes the AAAA start identifier but excludes the 9999 end identifier).2’s complement binary signed integer, seconds.Zone is 15 minutes before to 15 minutes after a leap second.The message should be sent such that the final “99” occurs at 0 msec and 500 msec. This is a hexadecimal frame/message sent twice per second. Indicates the synchronous moment for the time setting. Number of characters: 24 (including CRLF and '.') It provides year, month, day, day of week, day of month, hours, minutes, and seconds. This format is based on string ASCII characters, and is sent once per second. ![]()
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