Spectracom VersaSync User Manual page 61

3.
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2 VersaSync User Manual Rev. 6.0
with the 1PPS.
Request (On-time) : A format message is generated in sync with 1PPS after
the configured request character has been received.
Request (Immediate) : A format message is generated as soon as the request
character 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 information (such as Formats 0 and 1 whereas Format 2 provides
sub-second information), 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.
Note:
the choices of Format Group and Format.
Timescale : Used to select the time base for the incoming data. The entered Times-
cale is used by the system to convert the time in the incoming data stream to UTC
time for use by the System Time. The available choices are:
UTC : Coordinated Universal Time ("temps universel coordonné"), also
referred to as ZULU time
TAI : Temps Atomique International
GPS : The raw GPS time as transmitted by the GNSS satellites (as of August,
2018, this is currently 18 seconds ahead of UTC time).
If GPS or TAI time is used, then the proper timescale offsets must be set on the
MANAGEMENT: OTHER > Time Management page. (See "The Time Management
Screen" on page 114 for more information on how to configure and read the
System Time). Local timescale allows a Local Clock to apply a time offset for Time
Zone and DST correction.
A Local Clock can be set up through the Time Management page: This
option will appear under the name of the local clock you have set up. See
for more information. Local timescale allows a Local Clock to apply a time
offset for Time Zone and DST correction.
The incoming input time information may be provided as local time, but
System Time may be configured as UTC time, so internal computations
need to be performed. With the Timescale field set to "Local", select the
name of a previously created Local Clock.
Baud Rate : Determines the speed at which the output port will operate.
Data Bits : Defines the number of Data Bits for the output port.
Parity : Configures the parity checking of the output port.
Stop Bits : Defines the number of Stop Bits for the output.
Click Submit.
2.6 Configuring Inputs/Outputs
The choices available in this field are determined by
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