Upgrade Your Praecis Cfr Precision Frequency Reference (CDMA)
Free Software Upgrades
We provide software upgrades for all our products at no charge. The software available on this page is for the Praecis Cfr only. To download software for the Praecis Gfr (Time & Frequency Standard with GPS) click here. The latest binary image file is below:
Upgrade Instructions
The binary image file above is zipped so please unzip before proceeding. Then you are ready to perform the upgrade to your Praecis unit. Please refer to your User Manual, Appendix B - Upgrading the Firmware, for further instructions. If you would like to download the manual click here.
Note: Downloading a new binary image may cause your stored user settings to be reset to their factory defaults. We recommend you make a note of your current user settings before downloading. (Use the SETTINGS command for a report of all settings.)
If you have any problems with the upgrade please contact customer support by email or phone: 1-877-749-3878.
History of Software Changes
(Part Number 6010-0001-006)
| Version | Changes |
| 2.18 | Changes are pertinent to GPS units and are not listed here. |
| 2.17 | Fixed a CDMA signal processor problem that occurred, rarely, in units with standard TCXO oscillators. |
| 2.16 | Added new time code output format. |
| 2.15 | Enhancements to frequency control algorithm to improve operation of high-stability oscillators in bad multipath environment. |
| 2.14 | Improved integrity checking on time information input. |
| 2.13 | Corrected bug in holdover-capability for units with oscillator options. |
| 2.12 | Added ability to allow user to set the local offset and Daylight Savings Time information. |
| 2.11 | Added a five-minute warmup period for units with rubidium oscillators. |
| 2.10 | Added the ability to set the TFOM level at which a system fault will occur. |
| 2.09 | Added optional time code output capability. |
| 2.08 | Added capability to decode CDMA timing information as the CDMA Mobile Telecommunications System evolves to 3G, which is based on the CDMA2000 specification. |
