Lassen SQ, Справочное руководство

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Lassen SQ GPS Receiver 7 9
Trimble Standard Interface Protocol (TSIP) A
A.14
Key Setup Parameters or Packet BB
Selecting the correct operating parameters has significant impact on
receiver performance. Packet 0xBB (set receiver configuration)
controls the key setup parameters.
The default operating parameters allow the receiver to perform well in
almost any environment. The user can optimize the receiver to a
particular application if the vehicle dynamics and expected level of
obscuration are understood. If the receiver is then taken out of this
environment, the specifically tuned receiver may not operate as well as
a receiver with the default options.
The table below lists suggested parameter selections as a function of
obscuration and whether accuracy or fix density is important. In this
table, NA indicates that the operating parameter is not applicable, DC
(don't care) indicates that the user may choose the operating
parameter.
The default values in Table A.10 allow the receiver to operate well
under the most varied and demanding conditions. A user may choose
to change the default parameters if the receiver is only required to
perform in a specific or limited environment. The user should be
warned that when the receiver is exposed to operating conditions
which are different from the conditions described by the user setup,
then the performance may be degraded.
Table A.10 Setup Parameters in Packet 0xBB
Parameter Accuracy Fixes Factory Default
Fix mode Man 3D AUTO AUTO
Dynamics code Land Land Land
Elevation mask 10° 5° 5°
Signal mask 6.0 4.0 3.0
DOP mask 6.0 12.0 12.0
DOP switch NA 8.0 6.0
DGPS correction age 10 Seconds N/A 30 Seconds