Spectracom SecureSync User Reference Manual page 448

APPENDIX
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. 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 information on Local Clocks.
Configurable settings for each Time of Day are:
Signature Control : Used to control when the signal will be present. This function allows the
modulation to stop under certain conditions, see also "Signature Control" on page 141.
TOD Format : The user-selectable format to be used. Available formats include:
Electrical Format : Selects signaling on either RS-485 or TTL (supporting up to 10 V levels)
signal lines.
Time Scale : Used to set the desired time scale (UTC, TAI, GPS, or Local). See above.
Offset (ns) : Provides the ability to account for STANAG Line (TOD1 and TOD2 inde-
pendently) cable delays or other latencies in the STANAG output. Available Offset range
is –500 to +500 ms in 5ns steps.
Configurable settings under 1PPS Output are:
432
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 July, 2015,
this is 17 seconds ahead of UTC time)
A local clock set up through the Time Management Page—Refer to "The Time Man-
agement Screen" on page 146 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.
STANAG 4246 HQI
STANAG 4246 HQII
STANAG 4372 HQIIA
STANAG 4430 STM
STANAG 4430 XHQ
ICD-GPS-060A BCD
ICD-GPS-060A HQ
DOD-STD-1399 BCD
SecureSync User Reference Guide