Orolia SecureSync 2400 - Page 432

Fields confirm to Spectracom IEEE C37.118-2005: Has been extended to
support one-month leap second notification
The available options will vary according to the configurations of Format and Mod-
ulation Type.
Timescale: Used to select the time base for the incoming time code data. The
entered Timescale 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 15-
February-2021, 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. See "Local Clock
(s), DST" on page179 for more information. Local timescale allows a Local
Clock to apply a time offset for Time Zone and DST correction.
Amplitude: The peak-to-peak output voltage level into a 600 Ω load is adjusted by
entering a digital control value in this field. The level adjustment has no effect on
TTL outputs, only on AM formats. The value of 128 will cause the Mark amplitude to
be about 5V
p-p
into high impedance. A value of 200 results in an output amplitude
of about 9V
p-p
into high impedance.
Note: These are nominal values only. Actual values will vary from unit to
unit. To adjust the level precisely, connect an oscilloscope to the output con-
nector when adjusting.
Offset: Provides the ability to account for IRIG cable delays or other latencies in the
IRIG input. The Offset value is entered and displayed in nanoseconds (ns). The avail-
able Offset range is -500 to +500 ms.
For IRIG frequency and output specifications, see "IRIG Standards and Specifications" on
page546.
IRIG Output: Status Window
To view the current settings of one of the IRIG Outputs, go to its Status window. For
instructions, see: "Viewing Input/Output Configuration Settings" on page334.
416 SecureSync 2400 User Manual
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