XL-GPS

At the core of the XL-GPS is Symmetricom’s advanced XLi technology which assures ultra accurate and reliable performance. The XL-GPS offers cost-effective functionality and ease-of-use where the XLi offers modularity and extensibility through multiple option slots and modules.

Nanosecond Accuracy
The XL-GPS clock is accurate to within 30 nanoseconds to Coordinated Universal Time (UTC) when synchronized to the integrated 12 channel GPS satellite receiver. Ultra-stable frequency outputs are accurate to less than 1x10^-12 long term. For improved short-term stability and holdover performance, an oven oscillator option is available. A time code input provides an alternate or back-up reference to GPS.

Easy Monitoring and Control
The XL-GPS provides multiple interfaces to facilitate easy monitoring and control. The built-in network interface supports remote operation via telnet and SNMP. Local control is supported via a RS-232/422 port and a front panel LCD display and keypad is provided for direct control. A discrete alarm output is also provided to drive an alarm monitoring system.

Variety of Outputs
The XL-GPS provides a variety of standard time and frequency outputs including a 10 MHz frequency reference, one pulse-per-second (1PPS), time codes (IRIG A, B; IEEE 1344 and NASA 36), pulse rates up to 10MPPS, and an open collector alarm output.   A rear panel option bay supports expansion of standard time and frequency outputs with a hardware option module.  A Programmable Pulse Output (PPO) is available as a software option. The front panel display provides operators with “at-a-glance” system status.

Versatile Measurement
The versatile XL-GPS supports measurements of time and frequency signals relative to its very accurate clock. The Frequency Measurement (FM) option supports analysis of 1, 5, 10 MHz frequencies. The Time Interval/Event Timing (TI/ET) supports precise event time tagging and time interval measurements to 5 nanosecond.

Bottom Line
The XL-GPS has a strong set of core features that can be extended with a number of versatile options to meet the needs of a wide range of applications.

• 12 Channel GPS Receiver with TRAIM
• Accurate to 30 Nanoseconds RMS to UTC(USNO)
• Frequency Accuracy to 1x10^-12 (long term)
• Time Code Input/Output (IRIG A,B; IEEE 1344, NASA 36)
• 10 MHz Frequency Reference Output
• 1PPS, Selectable Pulse Rates, and Alarm Outputs
• Ethernet Network Port (10/100 Base-T)
• SNMP with Enterprise MIB
• Telnet and Serial Port (RS-232/422) for Monitoring and Control
• Bright LCD Display and Keypad
• Network Time Server Option Supports NTP
• Option Bay support time and frequency option modules
• Programmable Pulse Output Option
• Time Interval/Event Timing Option
• Frequency Measurement Option
• RoHS 5/6 compliance

• Communications and satellite and ground based instrumentation
• Test and measurement
• Central timing systems
• Process automation
• Range timing systems
• Power industry

Data Sheets
XL-GPS (PDF)

Product Manual
XL-GPS User Guide (PDF)

XL-GPS Quick Start Guide (PDF)

General Antenna Information
Every GPS receiver requires an antenna to operate. There are several basic antenna types used with GPS timing receivers, including an optional window mounted antenna for NTS time server products. The roof mounted antenna is required for the more accurate GPS clocks. For more information, please download the following: General GPS Antenna Info (PDF)

Antenna Accessories
Lighting Arrestor (PDF)
Antenna Splitter (PDF)
In-Line Antenna Amplifier (PDF)
LI Antenna GPS Down/Up Converter (PDF)