XLi Time & Frequency System 69
XLi-man, Issue 8, 6/17/2008, Rev. H
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SSSSSSSSSSSS SSSSSSSSSS SSSSSSS S SSS S SSSSS S
The Time On Demand string contains an additional four characters representing the decimal point and
milliseconds of the Local Time at the time of receipt of the 'T'.
Exit F27 B<N> TD mode by entering a ^C or Ctrl+C.
F42 – Multicode Output Configuration
Use function F42 to view or set up the time-code outputs of the Multicode Output (87-6002-
XL1) (page 171).
• Board #: Identifies the card to which the following settings will apply. (Select between multiple
cards using the UP/DOWN ARROWs buttons on the keypad). The card number is determined by
the position of DIP switches on the Multicode card. Each card must have a unique number. (See
“Installation” on page 171)
• Output #: Identifies the output to which the settings apply (e.g., J1 through J4)
• Code: The time code output by the port. The note below provides a complete list of all the time
code types available.
• Time Reference: The type of time (e.g., UTC, Standard, Local, GPS) output by all ports on the
card. Even though this setting is shown for a specific output, it sets the type of time for all ports.
Notes:
• The code output types include: IRIG-A 130, IRIG-A 133, IRIG-B 120, IRIG-B 123, IRIG-E 111,
IRIG-E 112, IRIG-E 121, IRIG-E 122, IRIG-G 141, IRIG-G 142, IRIG-H 111, IRIG-H 112, IRIG-H
121, IRIG-H 122, 2137, XR3, NASA 36.
• If IRIG-A 130 or IRIG-A 133 is selected as the output type for a specific port, all other ports set for
IRIG-A will be ‘bumped’ to the same type (130 vs. 133). Ports set to other time code types (e.g.,
IRIG-B) are not affected.
• The same is true for IRIG-G. If IRIG-G 141 or IRIG-G 142 is selected as the output type, all the
other ports set for IRIG-G will be ‘bumped’ to the same type (141 vs. 142). Ports set to other time
code types (e.g., IRIG-B) are not affected.
• For more information on the code output types, see “E: Time Code Formats” on page 287.
• For Time Reference, the following is a summary explanation of the different types of time:
- UTC (Coordinated Universal Time) differs from GPS Time by the addition of leap-second cor-
rections to compensate for variations in the earth’s rotation.
- GPS time is derived directly from the GPS constellation. It doesn’t contain leap-second
adjustments or other GPS-to-UTC corrections.
- Standard time is UTC plus a time zone adjustment. For example, Pacific Standard Time is
UTC minus 8 hours. See “F: World Map of Time Zones:” on page 291
for more information.
- Local time is UTC plus a time zone adjustment and a Daylight Saving Time adjustment.
•See “F69 – Time Mode” on page 89
for an expanded explanation of the different types of time.
Note, however, that F69 does not affect F42 or the Multicode Output card.
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