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997-01530-01, Rev. C-25, Jan 2008 9
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IRIG Code Out
Alarm
Rates
Optional Programmable Pulse
Optional Alarm Relay
NTP
The standard network interface of the XL-GPS can be optionally enabled at the factory, or by the user in
the field, to become a Network Time Server (NTS) to client clocks over a network. Time is acquired from
the host clock and distributed over the network using the Network Time Protocol (NTP). Initialization of
the NTS option is done via the Serial I/O port, Network Port, or via the front panel keypad.
Format: IRIG B-120 1 kHz AM, or IRIG B-000 DC
Amplitude (AM): 3.0 Vp-p +/-1V, into 50 Ω
Ratio (AM): 3:1 +/- 10%
Amplitude (DC): TTL into 50 Ω
Phasing: In phase with carrier ± 10 μS
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.
Drive: Open Collector
Max. Voltage: 25 VDC
Max. Current: 50 mA
Rate: 1 PPS, 1 kPPS, 10 kPPS, 100 kPPS, 1 MPPS, 5 MPPS, 10 MPPS
Duty cycle: 60/40% +/- 10%
Amplitude (TTL): TTL Levels into 50 Ω
On time edge: Rising
Amplitude: TTL Levels into 50 Ω
Connection: Terminal strip, COM, NO, NC
Max Voltage: 48 VAC/VDC
Max Current: 2 A @ 24 VDC