Ø Case 1: GPRS is Active (Online).
o Digi X-Trak 3 will automatically download ‘current_14d.alp’ to ‘/WEB/python’ path from u-blox server. This operation takes 10-15 minutes after the first startup. After first reboot of the Digi X-Trak 3 after current_14d.alp is downloaded, the AGPS feature will be enabled.
Ø Case 2: GPRS is inactive (Offline).
o File “current_14d.alp” should be downloaded from the website->http://alp.u-blox.com/ into a local directory.
o This file “current_14d.alp” should be uploaded into the device in the directory “/WEB/python” using Digi ESP for Python, Digi Dashboard or iDigi.
o After uploading this file, device needs to be rebooted.
o Once, the file is in “/WEB/python” directory at startup, the AGPS feature will be enabled.
Please note that if the file “current_14d.alp” is not present in the “/WEB/python” directory, a print “Almanac Plus File is not present. AGPS will not work.” on the debug port will be displayed and the unit will have normal GPS working.
Last updated: Aug 08, 2017