Specifications

38 Z-Family Technical Reference Manual
Filler: Message 6 Null Frame
This message is provided for datalinks that require continuous transmission of data,
even if there are no corrections to send. As many Messages 6 are sent as required to
fill in the gap between two correction messages. Messages 6 are not sent in the burst
mode ($PASHS,RTC,SPD,9)
Special Message: Message 16
This message allows you to transmit an ASCII message from the base station.
Using a PC Interface
If you are using Evaluate software to interface to your receiver you may use
initialization files (
*.gps) to send the base station setting commands for you.
Receiver Communication Software can be used as well.
To monitor the corrections from a PC, turn on the MSG message
$PASHS,NME,MSG,port,ON
This generates an ASCII echo of the RTCM messages being transmitted by the base
station. Use different receiver serial ports for MSG and the actual transmitted RTCM
messages.
Using a Handheld Interface
If you are using Ashtech software running on the Husky FS/2 handheld computer,
differential set-up is controlled via a series of menus designed to free users from
knowing or entering commands. Handheld software allows users to monitor and
control most receiver functionality.
Remote Stations
Setting Up a Differential Remote Station
You must have the Differential remote option [U] installed on your receiver.
You must have a source of differential corrections, usually a radio receiving a
transmission from a base station. Connect this radio to one of the receiver serial ports.
Send the following commands to the receiver. The receiver will accept RTCM
differential corrections in message types 1 or 9. You do not have to tell the receiver