Irig Carrier Frequencies - Spectracom VelaSync 1232 User Manual

APPENDIX
around 100 nanoseconds or so (plus the cable delays between VelaSync and the other
device, as well as the processing delays of the other system itself).
IRIG AM functionality is available through an option card.
Note that all IRIG outputs has its own available 'offset' capability, which is configurable
via VelaSync's Web UI, to help account for cabling and processing delays of the device
each output is connected with.
5.3.2

IRIG Carrier Frequencies

Each IRIG code specifies a carrier frequency that is modulated to encode date and time,
as well as control bits to time-stamp events. Initially, IRIG applications were primarily mil-
itary and government associated. Today, IRIG is commonly used to synchronize voice log-
gers, recall recorders, and sequential event loggers found in emergency dispatch
centers and power utilities.
Table 5-4:
Format
IRIG-A
IRIG-A
IRIG-A
IRIG-A
IRIG-A
IRIG-A
IRIG-A
IRIG-A
222
Available IRIG output signals
Encoding Modulation Carrier
A000 DCLS N/A
A001 DCLS N/A
A002 DCLS N/A
A003 DCLS N/A
A004 DCLS N/A
A005 DCLS N/A
A006 DCLS N/A
A007 DCLS N/A
Coded Expressions
IRIG-A
BCD , CF and SBS 1000
TOY
pps
BCD , CF 1000
TOY
pps
BCD 1000
TOY
pps
BCD , SBS 1000
TOY
pps
BCD , BCD , CF 1000
TOY YEAR
and SBS pps
BCD , BCD , and 1000
TOY YEAR
CF pps
BCD , BCD 1000
TOY YEAR
pps
BCD , BCD , and 1000
TOY YEAR
SBS pps
Time Frame
Bit rate
Interval
0.1 sec
0.1 sec
0.1 sec
0.1 sec
0.1 sec
0.1 sec
0.1 sec
0.1 sec
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