external time synchronization or for data processing. See "Time Code Data
Formats" on page560 for a description of all supported time code formats.
The RX signal on an output interface is used for triggering the output ASCII mes-
sage output when a configured character is received from the peripheral device.
When SecureSync is configured to output only one format message (the second
and third formats configured as “None”), the one configured message will be
available on the output port as either a broadcast message or only upon a
request character being received. SecureSync has the ability to output one or
two additional data stream messages immediately following the first message. In
this configuration, only the first message determines the on-time point for the
entire output string. The on-time points for the second and third messages that
are provided at the same time as the first message are discarded. This unique cap-
ability allows SecureSync to be able to simultaneously provide multiple pieces of
data from different selected format messages.
An example of selecting multiple formats is selecting “NMEA GGA” as the first
format, “NMEA RMC” as the second format and “NMEA ZDA” as the third format.
Depending on the setting of the “Mode” field (which determines if the data
streams are available every second or upon a request character being received),
at the next second or the receipt of the next request character, the output port
will provide the GGA message followed immediately by the corresponding RMC
message for that same second, followed immediately by the corresponding ZDA
message for that same second. The first GGA message will provide the on-time
point for the entire output data stream.
ASCII Time Code, RS-232 [1204-02]: Specifications
Inputs/Outputs: (1) Input, (1) Output
Signal Type and Connector:
Connector J1 — (RS-232 Output) RS-232 DB-9 F
Connector J2 –- (RS-232 Input) RS-232 DB-9 M
Accuracy: ±100…1000 μs (format dependent)
Maximum Number of Cards: 6
Ordering Information: 1204-02: ASCII Time Code Module (RS-232)
484 SecureSync 2400 User Manual
APPENDIX
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