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12
XLi Time & Frequency System
XLi-man, Issue 8, 6/17/2008, Rev. H
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1
ALARM Output
Time Code Output IRIG-B120 w/ IEEE1344
The selectable Code output has an additional selection for IRIG-B-120 w/ IEEE1344. Configuration is via
the Keypad / Display, RS232/422 and the Network port via telnet and HTML.
IRIG-B-120 IS DEFINED IN IRIG STANDARD 200-04 AS:
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Format B 100 pps
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1 = Sine wave amplitude modulated
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2 = 1KHz carrier/1mSec resolution
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0 = BCD TOY,CF,SBS
IEEE1344 IS DEFINED IN IEEE1344-1995(R2001) ANNEX F AS:
IRIG-B format, <sync>SS:MM:HH:DDD<control bits> <binary seconds>
where
<sync>
is the on time marker
SS
seconds 00-59 (60 during leap seconds)
MM
minutes 00-59
HH
hour of day 00-23
DDD
day of year 001-366
<control>
27 binary control characters, see Table 1 (reference IEEE1344)
<binary seconds>
binary seconds of day
High Z:
Power off
High Z:
Alarm (enabled alarm fault)
Low Z:
Normal (no enabled alarm faults)
Drive:
Open Collector
Max. Voltage:
25 VDC
Max. Current:
50 mA
Quantity:
1
Connector:
Female BNC
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