ashtech DG14, Справочное руководство

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132 DG14 and DG16 Board & Sensor Reference Manual
Typical LPS response message:
$PASHS,LPS,10,3,1,*14
Table 6.31 outlines the response message.
LTZ: Local Time Zone
$PASHS,LTZ,d1,d2
This command sets an offset value from Greenwich Mean Time (GMT) in order to
derive local time, where d1 is the number of hours and d2 is the number of minutes
that should be added to or subtracted from GMT to get local time. The range for d1
is -13 to +13; the range for d2 is 0 to 59. Issue the command
$PASHQ,ZDA to get
current local time offset values, which are displayed in the last two fields before the
checksum. See the section in this chapter entitled “NMEA Commands/Responses”
for more information on the ZDA message.
Examples
Enter the following command to add an offset of +7 hours to GMT:
$PASHS,LTZ,+7,0
Enter the following command to add an offset of -4 hours, 25 minutes:
$PASHS,LTZ,-4,25
Table 6.31. Typical LPS Response Message
Item Description
$PASHR Header
LPS Message identifier
10 Third-order ratio setting for carrier loop (high
acceleration rate)
3 Carrier loop parameter setting (high dynamics,
medium phase noise)
1 Code loop parameter setting (fast range availability,
medium range noise)
14 Checksum
DEFAULT SETTING
LPS—10, 3, 1