Spectracom SecureSync 1200 User Reference Manual page 467

Format Group – configures the message format type. Choices are:
None (no message will be output)
Spectracom
NMEA
BBC
ICD-153
EndRun
Once selected, the Format Group may offer a choice of Formats . For more information
on supported Formats , see "ASCII Time Code Data Formats" on page 497.
Format 1 : Selects either the first of up to three, or the only format message to be
output.
Format 2 : Selects the second consecutive format message to be outputted. Select
"None" if only one output format is desired. "None" will be the only choice avail
able if Format 1 is "None."
Format 3 : Selects the third consecutive format message to be outputted. Select
"None" if only one output format is desired. "None" will be the only choice avail
able if Format 2 is "None."
Signature Control : Signature Control controls when the selected ASCII data output
format will be present; see "Signature Control" on page 136.
Output Mode : This field determines when the output data will be provided. The avail
able Mode selections are as follows:
Broadcast : The format messages are automatically sent out on authorized con
dition (Signature control), every second a message is generated in sync with the
1PPS.
Request (On-time) : A format message is generated in sync with 1PPS after the con
figured request character has been received.
Request (Immediate) : A format message is generated as soon as the request char
acter is received. As this selection does not correlate the output data to the on-time
point for the message, in Data Formats that do not provide sub-second inform
ation (such as Formats 0 and 1 whereas Format 2 provides sub-second inform
ation), it should be noted that the output data can be provided immediately, but a
time error could occur when using the on-time point of the message in addition to
the data for timing applications.
SecureSync User Reference Guide
APPENDIX
451