Standard Features
Days Reset: Resets to day 1 after day 365
Leap Year: Resets to day 1 after day 366
Alarm
Drive: Open Collector
Max. Voltage: 25 VDC
Max. Current: 50 mA
Qty: 1
Connector: BNC female
The open collector alarm output has the following states:
Off (High Z) Power off
Off (High Z) Error, major or minor enabled alarm fault.
On (Low Z) Normal, no major or minor enabled alarm faults.
Standard Features
Manual Leap second Entry
The Manual Leap Second Entry is supported via the Keypad, RS232/422 and the Network
port via telnet. This function allows the user to enter leap second data by identifying the
month and year of the next leap event. This mode of operation allows proper maintenance
of UTC by the XL-GPS when utilizing a time reference source that does not contain leap
second data. Manual leap second entry could also be beneficial when operating in a "free-
run" mode (i.e. no external reference) or in an extended holdover mode.
Locked reference sources containing leap second data (GPS and IRIG-B w/IEEE1344)
shall take priority to the manual leap second entry.
Manual leap second data shall be applied to the XL-GPS UTC TOD when locked to any
reference source that does not contain leap second data.
The manual leap second data will be applied to the clock at the end of the specified
month/year. Insertions are applied to the XL-GPS clock after 23:59:59 UTC (insertions)
and 23:59:58 UTC (deletions).
See See "F67 – Manual Leap Seconds Entry/Request" on page 87
098-00116-000 Rev. A............................... Page 9 of 221
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