Symmetricom XLi TCXO UPGRADED ublox GPS NTP Time Server 10MHz Oscillator w/ FTM
( 285800036375) )
Tested/Guaranteed - Fully
Working • Upgraded u-blox GPS Receiver • TCXO Oscillator •
FTM III AC Frequency Measurement • Part 1510-602 • NTP
Server • PPO • TI/ET • Frequency Measurement • GPSDO 10
MHz Oscillator • 1PPS • IRIG-B
Photos show the actual item for sale
Note: This unit has been upgraded
with a new, latest generation GPS receiver
module from ublox . It is therefore
unaffected by the September 18th 2022 week
number rollover event that caused most XLi
receivers to fail to sync to GPS and to show
an incorrect date. The new card is good for
accurate GPS time and date reception until
beyond 2037. It also tracks more satellites
and is quicker to lock that the 1990's
technology that was originally installed in
the XLi product.
Here's
a
lightly-used
Symmetricom
XLi
Time/Frequency
unit
in
very
good
cosmetic
condition. The unit has been tested and confirmed to operate
as it should, including full GPS lock and correct time/date
display. The photos show the actual item for sale. This unit
does have the internal GPS receiver card (87-8028-2)
installed which supplies 12 volts to the antenna, so the use
of a matched Symmetricom AT575 12V antenna is recommended.
The internal 10MHz oscillator is the standard TCXO for
free-running operation. The firmware has been
upgraded to the latest version posted on the Symmetricom
website (v2.4), and this supports reporting and
configuration via a web interface (with web log-on of
operator1:zeus, serial log-on is operator:janus). The unit does
have the optional software based functions
activated: NTP server, Time Interval/Event Timer (TIET),
Frequency Measurement, Programmable Pulse Output. Rack ears
are provided as shown. In my testing I was able to achieve
lock to GPS time and screenshots of the results of my
testing are provided below. This unit has the FTM III
expansion card installed which may be used to track AC line
frequency changes (monitoring software not included). If
that is not required then the card can be removed or simply
just ignored. The second AC socket labeled 'AC Input' is
used to take the frequency measurement only - it cannot be
used to apply power to the device. A few nicks and scratches
in the paintwork (eg. the rack ears) have been touched up
with matching paint with the aim of making the unit look
very smart when viewed in a rack at a normal distance.
Full details may be obtained from the
User Manual at
https://www.prostudioconnection.net/1606/Symmetricom_XLi_Manual.pdf
Key Features
- Better Than 1x10-12 Frequency Accuracy
- Supports Primary and Secondary Reference Inputs (GPS, Time Code, 1PPS)
- Configurable as Dual Redundant GPS Receiver in One Chassis (second GPS option not included)
- Standard 10/100 Base-T Network Port
- Intuitive Web Based Management
- HTML, Telnet, SNMP with MIB Standard
- Vacuum Fluorescent Display and Keypad
- Completely Modular with Plug-and Play Capability
- Numerous Field-Upgradeable, Plug-in Option Cards Available
- Time code reader/generator (IRIG A,B; NASA 36) AM and DC
- Auxiliary Reference Input Supports Lock to External Cesium to Enhance Holdover
- Standard Outputs: 1PPS, Selectable Pulse Rates and Alarm
- Flash Memory for Remote Software Upgrades
Description
One of the great design benefits of the XLi is that, because of its variety of option cards, a company can customize it to fit to their specific application needs. Whether your application demands redundancy in power supplies, GPS, or any other function, all it takes is the proper configuration of cards.
XLi Option Cards The wide range of XLi option cards make it easy to tailor your system to support nearly every possible output/input needed for time and frequency applications, by combining option modules, oscillator upgrades, and two GPS receivers per unit. Plug-and-play cards and built-in XLi option card recognition software lets you swap out modules without modifying your operating system.
Plug and Play Configuration Configuration recognition software automatically detects the unit’s setup, without modifications to the operating system, providing “plug-and-play" configuration capability for current and future application needs.
Freedom to Configure Modularity delivers the freedom to configure the XLi as a GPS timing receiver [GPS option not included], or a time code unit (TCU).
Seamless Integration The XLi seamlessly integrates into a network centric environment. The 10/100 Base-T interface is standard. Remote management is facilitated with the intuitive HTML web based interface as well as SNMP with an enterprise MIB. Command line interface is also supported via Telnet or the RS-232/422 serial port. The XLi can function as a Stratum 1 NTP server with addition of the NTS option.
Wide Range The standard XLi provides a wide range of time and frequency inputs and outputs such as: 1PPS output; time code input/output (IRIG A, B; NASA36) in both modulated (AM) and demodulated (DCLS) formats; programmable pulse rates; open collector alarm; front panel keypad and display; and more.
Modular Architecture for Easy Extensions The modular XLi architecture allows easy extension of the software and hardware in the field. Software updates are remotely administered. Existing and future hardware option modules can be added as needed by the user. The GPS timing interface is also modular which facilitates future upgrade to alternate Global Navigation Satellite Systems (GNSS), such as Galileo, when available.
