Interactive Command Set
334 SSU-2000 User’s Guide 12713020-002-2 Revision D – April 2004
ENGINE
Use this command to read or set the current settings for the GPS engine.
Level 0 Not applicable
Level 1
ENGINE xAy [ELMASK|POS|AVAIL]
Options are:
ELMASK Use this option to read current elevation masks for the
GPS engine.
POS Use this option to read the current antenna position
(latitude and longitude).
AVAIL Use this option to show current satellite availability.
Level 2 Same as Level 1 operation
Level 3
ENGINE xAy [PMASK mask][TMASK mask]
ENGINE xAy POS [lat lon ht][AVG n]
ENGINE xAy TDATA [ON|OFF|CLR]
ENGINE xAy PDOP {1-10}
ENGINE xAy FREQ [{ADD|DEL} freqval]
Options are:
PMASK mask Use this option to read and set the current elevation
masks for the GPS engine. The masks change to avoid
attempting to track satellites that are below a portion of
the sky that might be blocked by the terrain.
PMASK Use this option to set the positioning mask level. Lower
mask levels provide the unit position with a better
PDOP.
TMASK maskUse this option to set the mask level to be used when
not in survey mode. This is usually set to a higher level
than positioning because of timing degradation of the
GPS signals at low elevations. Valid mask levels are
from 0 to 60 degrees
POS Use this option to read and set the current antenna
position. In addition, you can set the maximum number
of averages to perform on the position calculations.
POS [lat lon ht] [AVGn]
Same as Level 1 operation, with the addition of being
able to set the current position and or the number of
averages to use when calculating a position.
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