Instruction manual

Page 52 Z-12 Real-Time Sensor Operation and Reference Manual
Query Satellites with Received Almanac
$PASHQ,ALH
This command asks for ALH message. This message contains the number of satellites
with received almanac since the receiver was turned on. The port for the message
output may be specified. If the port is not specified, the message is output to the port
from which the command was received. The command structure is $PASHQ,ALH,x
where x is port, A or B.
$PASHR,ALH
The response message is in the form $PASHR,ALH,n,a where the fields are as
described in Table 4.3.
Set Altitude of Antenna, Altitude Hold Fix
$PASHS,ALT
This command sets the ellipsoidal height of the antenna The command structure is
$PASHS,ALT,sxxxxx.xx where s = + or -, and x = 0 to 99999.99. The sensor uses
this data in the position calculation for 2-D position computation, and when in
differential base mode.
Examples:$PASHS,ALT,+100.25
$PASHS,ALT,-30.1
$PASHS,VDP Set VDOP mask 81
$PASHQ,WKN Query week number 81
$PASHR,WKN Response message, week number 81
$PASHS,WPL Upload waypoint to sensor 81
$PASHS,ZMD Set sensor to Z mode 82
Table 4.3: ALH Structure
Field Description
n Number of satellites with received almanac 0 through 32
a Almanac status
NO = receiver collected not almanacs of if TOA of almanacs are different or
if WNA not received
OK = receiver collected all almanacs. In this case the n field shows the
number of satellites in the constellation
Table 4.2: General Sensor Commands (continued)
Command Description Page