Safran SecureSync 2400 User Manual page 462

APPENDIX
446
Coded Expression—Defines the data structure of the IRIG signal, where:
BCD = Binary Coded Decimal
TOY = Time of Year
CF = Control Field
SBS = Straight Binary Seconds
The available options will vary according to the configurations of
Format and Modulation Type.
Control Function Field: IRIG signals have an optional section in the data
stream that can be used to include additional information (such as the
present year, for example). This field allows the Control Field section of the
IRIG output to be defined. The available configurations are:
Fields conform to
ation for year value, if included in this field.
Fields conform to
tains year, leap second and daylight savings time information.
Fields conform to
Field but not in the same location as RCC-2004 output (year is offset
by one position).
Fields conform to
Control Field that contains satellite lock status and time error flags.
Fields conform to
Fields confirm to
ded to support one-month leap second notification
The available options will vary according to the configurations of Format
and Modulation Type.
Note: If the Format value is changed, the Control Field and Coded
Expression change to the default values for the given Format value.
The user can only change the Control Field field and Coded Expres-
sion field to allowed values for the Format field.
RCC 200-04: IRIG spec 200-04 specified a loc-
IEEC 37.118-2005 (IEEE 1344): Control Field con-
Spectracom Format: Year is included in Control
Spectracom FAA Format: A unique IRIG output
NASA Formats: Variants of IRIG B
Spectracom IEEE C37.118-2005: Has been exten-
SecureSync 2400 User Manual