Setting Up A Combined Differential And Rtk Base Station - ashtech GG Surveyor Reference Manual

$PASHS,RTC,TYP,18,1
$PASHS,RTC,TYP,19,1
$PASHS,RTC,TYP,22,1
$PASHS,RTC,SPD,9
$PASHS,CPD,MOD,BAS
$PASHS,LPS,1,1,1
$PASHS,SAV,Y
The receiver is set as a base station which transmits RTCM messages types 18 and 19
every second, and types 3 and 22 every minute. Following a power cycle it will
automatically start transmitting these messages again (because you have saved the
settings with the $PASHS,SAV,Y command). To change the message rate, use the
$PASHS,RTC,TYP command.
Setting Up a Combined Differential and RTK Base
Station
You must have both the Base option [B] and the Phase Differential option [J]
installed in your receiver.
Send the commands listed in Table 5.3 to the receiver.
$PASHS,RST
$PASHS,PEM,4
$PASHS,ELM,4
$PASHS,POS,ddmm.mmm,d,dddmm.mmm,d,saaaaa.aa
$PASHS,RTC,BAS,x
$PASHS,RTC,SPD,9
Differential and RTK Operations
Table 5.2: RTK Base Station Commands (continued)
Command
Table 5.3: Base Station Commands
Command
Description
Turn on RTCM messasge type 18.
Turn on RTCM messasge type 19.
Turn on RTCM messasge type 22.
Set internal bit-rate for corrections to burst
mode.
Set receiver as RTK base station with
default settings: Type 18 and 19 messages
generated one per second. Type 3 and 22
messages generate once per minute. RTCM
data output on port B in burst mode.
Set loop setting for stationary receiver
Save settings
Description
Reset the receiver to factory defaults
Set the Base differential mask to four degrees
Set the RTK base elevation mask to nine degrees
Enter the phase center of the antenna
Turn on RTCM corrections on port x
Set internal bit-rate for corrections to burst mode
47