ashtech HDS800, Reference Manual

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214
Integrating HDS800 into Your Application
Acquiring the
NTRIP Source
Table
After the $PASHS,NTR,PAR command has been sent and the
modem state has switched to INIT, you can ask the receiver
to get the source table from the caster.
NOTE: The modem INIT state is indicated on the receiver
front panel when the following icon (static) appears in the
lower line:
. The number of bars is proportional to the
strength of the signal received by the cellular antenna. You
can also use the $PASHQ,MDM to read this state.
Monitoring the
Modem
Initialize the modem. Wait a few seconds
until the receiver can respond to this com-
mand.
NOTE: If the initialization fails, the message
$PASHR,MDM,INI,FAILED*7D is returned.
$PASHS,MDM,INI
$PASHR,MDM,INI,OK*7A
Enter the NTRIP caster parameters (see
example in the right column).
NOTE: The ADD field may contain either an
IP address or a host name. $PASHS,NTR,PAR,ADD,
83.167.123.12 ,PRT, 2101 ,LGN,
name ,PWD, password ,TYP,0,IPP,E
$PASHR,ACK*3D
Set the receiver to be a rover:
$PASHS,CPD,MOD,ROV
$PASHR,ACK*3D
Set the receiver to send a GGA message
periodically to the caster, if necessary. $PASHS,NME,GGA,E,ON,5
$PASHR,ACK*3D
Ask the modem to connect to the mount
point (e.g. NAN1):
NOTE: If you don’t know which mount point
to connect the modem to, see
Acquiring the
NTRIP Source Table below.
$PASHS,NTR,MTP, NAN1
$PASHR,ACK*3D
Action Command
Action Command
Load the NTRIP source table to the
receiver: $PASHS,NTR,LOD
$PASHR,NTR,OK*14
Query the source table:
NOTE: In the receiver response, you can
find the label of the mount point you would
like the modem to connect to. If necessary,
refer to the NTRIP or RTCM standard docu-
mentation to decode this information.
$PASHQ,NTR,TBL
$PASHR,NTR,TBL
SOURCETABLE 200 OK
…
ENDSOURCETABLE
Action Command
Query the modem status and settings:
$PASHQ,MDM
$PASHR,MDM,E,9,ONLINE,...
Query the modem signal level:
$PASHQ,MDM,LVL
$PASHR,MDM,LVL,80*6E