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F119 – GPS Receiver Configuration
F119 – GPS Receiver Configuration
Summary
Use function F119 to query and configure the GPS Receiver.
F119 provides the following GPS receiver information:
• Available/Not Available
• Part Number
• Software Version
• FPGA Number
F119 provides the following GPS receiver status:
• GPS Status (Locked or Unlocked)
• GPS Antenna (Ok or Open)
• GPS Acquisition State - (Dynamic Mode, Stop Site Survey, Stop TRAIM, Start Site
Survey, Start TRAIM, Survey Position, Position Hold, TRAIM Active)
See "Factory Default Jumper and Switch Settings for Options" on page 166
Operation
Each of F119’s information, status, and configuration items are explained below. Because
F119 and the GPS receiver are important elements of the XL-GPS Time and Frequency
System, this section explains interactions and behavior of the F119, the GPS receiver, and
other system functions in some detail.
Part Number, Software Version, and FPGA Number
This information may be useful for identifying the GPS receiver to Symmetricom technical
support.
GPS Status (Locked or Unlocked)
During normal operation, “Locked” means the receiver has its current position and the
current GPS time. “Unlocked” means the receiver doesn’t have its current position yet, or
that no “good current” satellites are available to provide the current GPS time. For additional
information on “good current” GPS satellites,
see “F60 – GPS Receiver Satellite List” on
page 81 .
Note: GPS status can be “Locked” before the GPS receiver is a valid time reference. This is
explained below.
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