Ltz: Set Local Time Zone - ashtech GG Surveyor Reference Manual

Gps/glonass receiver
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For high dynamic applications, use the setting $PASHS,LPS,10,3,1.

LTZ: Set Local Time Zone

$PASHS,LTZ,d1,d2
Set local time zone value, where d1 is the number of hours that should be added to the
local time to match GMT time and d2 is the number of minutes; minutes have the
same sign as d1. The d1 value is negative for east longitude, and the range is 0 to 13.
The setting is displayed by NMEA message ZDA.
Example: Set local time zone to +7 hours, 0 minutes
MRX: Set Transformation Matrix from PZ-90 to WGS-84
$PASHS,MRX
Sets the transformation matrix from PZ-90 to WGS-84. The structure is
92
Third-order ratio for carrier loop x (default = 10):
x = 0
indicates ratio of 0, i.e., no third-order, the carrier loop is a
regular second-order loop (with damping of 1 instead of 0.7 as
in previous versions)
x = 1
indicates ratio of 0.1, for low acceleration rate
x = 10
indicates ratio of 1.0, for high acceleration rate
Carrier loop parameter y (default = 3):
y = 1
indicates noise bandwidth of 0 = 10;static, very low phase
noise
y = 2
indicates noise bandwidth of 0 = 25; low dynamics, low phase
noise (< 2g for x=1 and <20g for x=10)
y= 3
indicates noise bandwidth of 0 = 50; high dynamics, medium
phase noise (< 6g for x=1 and <100g for x=10)
Code loop parameter z (default = 1):
z = 1
indicates noise bandwidth of 0 = 1.0; fast range availability (5
sec), medium range noise
z = 2
indicates noise bandwidth of 0 = 0.5; medium range
availability (10 sec), low range noise
z = 3
indicates noise bandwidth of 0 = 0.1; slow range availability
(50 sec), very low range noise
$PASHS,LTZ,+7,0
$PASHS,MRX,f1,f2,f3,f4,f5,f6,f7
GG Surveyor GPS+GLONASS Reference Manual

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