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
22-August-2023, this is 18 seconds ahead of UTC time)
A local clock set up through the Time Management Page: This option
will appear under the name of the local clock you have set up. Refer
to "The Time Management Screen" on page186 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 cor-
rection.
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 per-
formed. With the Timescale field set to “Local”, select the name of a previously
created Local Clock. The Time Zone and DST rules, as configured in the Local
Clock will be applied to the front panel time display. Refer to for more inform-
ation on Local Clocks.
Offset: Provides the ability to account for HAVE QUICK cable delays or
other latencies in the HAVE QUICK outputs. The Offset values are entered
in nanoseconds (ns). The available Offset range is –500 to +500 ms.
5.2.5.6 HAVE QUICK In/Out [1204-29]
The HAVE QUICK input/output option card 1204-29 provides SecureSync with
(1) HAVEQUICK input and (3) HAVE QUICK outputs.
HAVE QUICK In/Out [1204-29]: Specifications
Inputs/Outputs: (1) HAVE QUICK input/(3) HAVE QUICK outputs
Signal Type and Connector: TTL levels (BNC)
Output Load Impedance: 10kΩ
Start of Signal: <10μs after 1PPS output
Programmable phase shift: ±5ns to 500ms with 5ns resolution
Maximum Number of Cards: 6
Ordering Information: 1204-29: HAVE QUICK Input/Output
476 SecureSync 2400 User Manual
APPENDIX