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True Time XL-DC

GPS Receiver


This Truetime XL-DC GPS Receiver has a full range of rear panel outputs including 10Mhz, 5 MHz & 1 MHz.  The unit has a backlit display that shows all aspect of receiver performance.  The clock display can be set to display any time zone in 12 or 24 hour format and automatically adjust for daylight savings if necessary.  It has just come back from factory performance verification and was only removed from the box for the listing photos.  It includes a Symmetricom (HP) 58532A GPS Reference Antenna and a 25 Foot Andrews Heliax Antenna Cable.  This system also includes a copy of the Truetime XL-DC & 58532A Operations manuals.

This System is in excellent physical and electrical condition.  The only item of note is a small dent in the top cover which is too minor to capture in the photographs.   The reserve on this item is $999.00


  • <40 nanoseconds rms accuracy to UTC during Selective Availability (SA)
  • Better than 1x10-12 frequency accuracy when locked to GPS
  • Versatile and modular architecture
  • Supports many output options
  • 1 PPS output
  • IRIG B time code output
  • Internet/local network remote control option

Data Sheet (99k PDF)
Options Data Sheet (374k PDF)





As our many customers will attest, we will do our very best to resolve any customer problems.  But our official policy is: 

  • All items sold are guaranteed against D.O.A. only. 
  • All claims must be made within 3 days of receipt. 
  • All warranties are void if the calibration / warranty seals are broken.


Ascent Concepts and Technologies is a Research & Development Lab.  As a service to the companies and institutions we work with, we broker their excess equipment & acting as application specialists on their new equipment needs.  We are now offering quality used equipment to the public with the same level of professionalism and service.   Please feel free to email at or call Thomas @ 1-303-554-0307 with any Technical questions.  Please feel free to email at or call Walt @ 1-720-276-8288 with any Shipping or Logistical questions. We make every effort to evaluate and guarantee our equipment.  Although we do not provide NIST traceable calibration, we do have in house calibration equipment and will make every effort to test and verify performance on equipment we sell.  However we do not warranty any items shipped outside the United States. 

Shipping Policy

Buyer will pay $35.00 packing and shipping in the continental United States.  We will make every effort to ship within 24 hours of receipt of payment.  We ship with FedEx & UPS only. We will be glad to ship with other carriers using the purchasers shipping account.  Please contact us to make any special shipping arrangements. For shipping rate research, our shipping address is Boulder, CO USA ---- Zip Code is 80305.

Foreign buyers:  Unless special provisions have been made, you are responsible for making your own shipping arrangements and all costs related to customs, duties & special packaging requirements.  Please do not ask us to quote you international shipping rates. Use the address information above to research you own shipping rates. You can email to get the packaging fee, package weight and size for your research. Items sold outside the USA are sold as is.  


 Payment Policy

We accept Credit Card payment through Paypal.   We accept Cashiers Check or Money Orders.



The equipment shown is a representation only.  We often have multiple units in stock so please email us with your needs.  We have a large inventory and can usually find any test and measurement item in a short time frame.------Inquires