Power Up Base System; Configure Base Gps Receiver To Function As An Rtk Base - ashtech Z-Xtreme System Manual

Power Up Base System

Power up the system by pressing the POWER button on the GPS receiver. Turn on
the handheld computer using the power button on the keyboard. Check that all com-
ponents are powered up. The GPS receiver and the radio have a LED to indicate that
power has been applied and the component is on.

Configure Base GPS Receiver to Function as an RTK Base

This task is usually accomplished using the handheld computer running the field
application software. The Z-Xtreme can be configured through an integrated display
and control panel. Configure the base receiver to function as an RTK base by per-
forming the following steps:
1. Set the receiver to RTK Base mode
2. Inform the receiver which port the radio is connected to. This is the port out
of which the base receiver will send the raw data to the radio. If you followed
the connection procedures above, the radio will be connected to serial port B
of the receiver.
3. Set the frequency on which the base radio will transmit data. In most cases,
this will not change but it is recommended that the current frequency is
checked. This is accomplished using the handheld computer. If using the
spread-spectrum radio, you are not required to select a frequency.
4. Inform the receiver if you want to collect raw data for post-processing.
In most cases, these are the only parameters that will need to be set. There are other
more advanced parameters that can be changed, but normally the default values for
these parameters are sufficient. Following is a list of some of these more advanced
parameters:
• Frequency of raw data transmissions - Sets how frequently raw data is
transmitted by the base radio. Default is 1 second.
• Raw data format - Sets the format in which raw data is being transmitted
by the base. Options are RTCM and PBEN (Ashtech proprietary). Default
is PBEN.
If using the field application software to configure the base system, refer to the docu-
mentation on the application software being used for specific steps. If using the front
panel of the Z-Xtreme, refer to the receiver manual for details.
54 Real-Time Kinematic Surveying