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
22-August-2023, this is 18 seconds ahead of UTC)
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 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 adjust-
ment 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 imped-
ance.
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 connector when adjusting.
Offset: Provides the ability to account for IRIG cable delays or other laten-
cies in the IRIG input. The Offset value is entered and displayed in nano-
seconds (ns). The available Offset range is -500 to +500 ms.
For IRIG frequency and output specifications, see "IRIG Standards and Spe-
cifications" on page587.
For information on IRIG output resolution, see "About the IRIG Output Res-
olution" on page587.
IRIG Output: Status Window
To view the specifications of an IRIG Output, go to its Status window. For instruc-
tions, see: "Viewing Input/Output Configuration Settings" on page363.
The Web UI list entries for these option cards are: IRIG Out BNC, IRIG Out Fiber,
IRIG Out RS-485.
SecureSync 2400 User Manual 437
APPENDIX
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