Note: The Timescale of the ASCII input (as configured in
the ASCII time source) must be set correctly, especially if
other input references are enabled. Failure to configure
the Timescale of the ASCII input correctly could result in
time jumps occurring in the System Time when input ref-
erence changes occur. These time jumps could affect
NTP and normal operation of the system.
PPS Source: Choices are:
Message: The 1PPS on time point is extracted from the ASCII
message received.
1PPS Pin: The origin of the 1PPS on-time-point is the 1PPS input
connector.
Baud Rate: Determines the speed at which the input port will operate.
Data Bits: Defines the number of Data Bits for the input output.
Parity: Configures the parity checking of the input port.
Stop Bits: Defines the number of Stop Bits for the input port.
3. Click Submit.
2.7.4.4 Configuring an ASCII Output
About the ASCII Format Outputs
The ASCII outputs (ATC = ASCII Time Code) provide VersaSync with the ability
to output one, two or three back-to-back ASCII time code data streams that can
be provided to peripheral devices which accept an ASCII RS-232 or RS-485 input
data stream for either their external time synchronization or for data processing.
See "Time Code Data Formats" on page319 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 VersaSync 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. VersaSync 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
56
CHAPTER 2 • VersaSync User Manual Rev. 12
2.7 Configuring Inputs/Outputs
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