ashtech ZY-12 Information Supplement page 79

Parameter
PRN: 12 LOCKED displays the current satellite number, as well as its current elevation (EL)
and its azimuth (AZ). It reports status as LOCKED or AVAILABLE. (PRN 12
is an example.)
When you press the up arrow, the receiver displays the orbital track of the
next higher number available/locked satellite. Pressing it when the highest
numbered PRN is displayed returns to ALL-IN-VIEW.
The down arrow scroll down the list, showing the path of the next lower number
satellite.
Screen Descriptions
Table 3.25. Orbital Track Parameters
Description
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